Tue, 19 Apr 2016 08:00:00 EDTElectrochromic device laminates and their method of manufacture are disclosed.
Tue, 26 Jan 2016 08:00:00 ESTA hard-coated antiglare film that has superior antiglare properties, allow high definition to be provided even in the case of a low haze value, can prevent white blur in an oblique direction from occurring and, and can improve the depth of black in black display, as well as a polarizing plate, and the like. The hard-coated antiglare film includes a transparent plastic film substrate and a hard-coating antiglare layer containing fine particles, which is on at least one surface of the transparent plastic film substrate. The hard-coated antiglare film has a total haze value Ht in the range of 10% to 35%. The total haze value Ht and an internal haze value Hin satisfy a relationship of 0.5≦Hin/Ht≦0.9. The surface of the hard-coating antiglare layer has an uneven shape and an arithmetic average surface roughness Ra in the range of 0.1 to 0.3 μm.
Tue, 15 Dec 2015 08:00:00 ESTA light output control apparatus, includes: an excitation light source that outputs excitation light;an excitation light guiding unit that guides the excitation light to an optical amplifying medium for transmitting a signal light; anda loss causing unit that includes an optical transmission medium located between the excitation light source and the excitation light guiding unit, and changes a radius of curvature of the optical transmission medium.
Tue, 18 Aug 2015 08:00:00 EDTThe zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power, and a rear lens group including one or more lens units and having as a whole a positive refractive power. The first and rear lens group are moved during zooming so that a distance therebetween decreases at a telephoto end as compared with at a wide-angle end. The first lens unit includes an image side aspheric lens having a negative aspheric amount and one or more object side aspheric lenses disposed on the object side further than the image side aspheric lens. A condition of 0.060
Tue, 28 Jul 2015 08:00:00 EDTAn optical transmission apparatus includes an optical amplifier configured to amplify a wavelength-division multiplexed signal light using an amplifying medium doped with a rare earth ion, a first optical transmitter configured to output a wavelength of a dual-polarization-multiplexed signal to a short wavelength side of an amplification band of the optical amplifier, a second optical transmitter configured to output a wavelength of a non polarization-multiplexed signal to a long wavelength side of the amplification band of the optical amplifier, and an optical multiplexer configured to input a wavelength-division multiplexed signal to the optical amplifier, the wavelength-division multiplexed signal comprising the non polarization-multiplexed signal and the dual-polarization-multiplexed signal.
Tue, 14 Jul 2015 08:00:00 EDTIn a wavelength selective switch, a holding member is used to rotate one end of optical fibers and a collimator array around a rotation axis to thereby change an incident angle of collimated light with respect to incident surfaces of a beam expander optical system. When the incident angle of the collimated light on the beam expander optical system is changed, an amount of variation in an emission angle of light from the beam expander optical system is not proportional (inversely proportional) to the magnification of the beam expander optical system. Thus, this wavelength selective switch can easily fine-tune the incident position (beam position) of light with respect to each reflecting surface of a MEMS mirror by rotating the holding member.
Tue, 23 Jun 2015 08:00:00 EDTLight control films, and a method for manufacturing tools used to microreplicate light control films.
Tue, 09 Jun 2015 08:00:00 EDTA head-up display includes a display device and a combiner that has a rear surface brought into contact with an inner surface of a windshield of a vehicle, and reflects a display light rays emitted from the display device by a front surface of the combiner toward a driver in the vehicle. The front surface forms a first arc-shaped optical surface which receives and reflects the display light rays toward the driver so that the driver sees a first virtual image of the display light rays with a set magnification greater than 1 on the outside of the windshield. The rear surface forms a second arc-shaped optical surface which receives and reflects the display light ray toward the driver so that the driver sees a second virtual image which coincides with the first virtual image in terms of the size and position on an outside of the windshield.
Tue, 26 May 2015 08:00:00 EDTProvided herein are devices and system to magnetically, rotably secure a lens filter to a camera. Generally the devices and systems comprise a magnet assembly and a lens filter assembly threadably engageable. Also provided are magnetic lens filter systems comprising the engaged magnet and lens filter assemblies and an attachment assembly securable around a camera lens and magnetically attachable to the magnet comprising the magnetic lens filter, magnetic adapter assembly or magnetic adapter. Further provided are camera systems comprising the magnetic lens filter systems rotatably affixed thereto.
Tue, 26 May 2015 08:00:00 EDTAn interchangeable lens attachable to a camera body includes an image pickup optical system configured to form an optical image of an object, and a controller configured to start initializing an optical element included in the image pickup optical system so as to move the optical element to a predetermined position when the controller receives a first signal that commands a start of an initialization from the camera body, and configured to start initializing the optical element after the controller receives identification information from the camera body and a period elapses for which the camera body consumes more than a predetermined amount of power when the controller does not receive the first signal from the camera body.
Tue, 26 May 2015 08:00:00 EDTAn optical switch includes: a semiconductor substrate, including a first rotation part and a first torsion beam disposed at two ends of the first rotation part, where the first torsion beam is configured to drive the first rotation part to rotate; a microreflector, disposed on a surface of the first rotation part of the semiconductor substrate; a first latching structure, disposed on a surface of the first torsion beam, the first latching structure including a form self remolding (FSR) material layer and a thermal field source, where the thermal field source is configured to provide a thermal field for the FSR material layer and the FSR material layer is configured to undergo form remolding under the thermal field, so as to latch the first rotation part and the microreflector in a position after rotation.
Tue, 26 May 2015 08:00:00 EDTA silicon-based thermal energy transfer apparatus that aids dissipation of thermal energy from a heat-generating device, such as an edge-emitting laser diode, is provided. In one aspect, the apparatus comprises a silicon-based base portion having a first primary surface and a silicon-based support structure. The silicon-based support structure includes a mounting end and a distal end opposite the mounting end with the mounting end received by the base portion such that the support structure extends from the first primary surface of the base portion. The support structure includes a recess defined therein to receive the edge-emitting laser diode. The support structure further includes a slit connecting the distal end and the recess to expose at least a portion of a light-emitting edge of the edge-emitting laser diode when the edge-emitting laser diode is received in the support structure.
Tue, 26 May 2015 08:00:00 EDTEmbodiments of the disclosed technology relate to a color filter substrate and a method of manufacturing the same. The color filter substrate comprises a base substrate having a black matrix pattern thereon, the black matrix pattern having a plurality of openings; and a plurality of color filter layers in different colors, disposed on the base substrate and located at the openings of the black matrix pattern, the color filter layers being glass layers in different colors.
Tue, 26 May 2015 08:00:00 EDTA lens holder driving device includes a lens holder in which a lens assembly is mounted, a driving coil fixed to the lens holder at outside circumference thereof, an outer yoke including an outer hollow cylindrical portion and an ring-shaped end portion disposed an upper end of the outer hollow cylindrical portion, a magnet disposed to an inner wall surface of the outer hollow cylindrical portion so as to be opposite to the driving coil, an elastic member supporting the lens holder in a direction of an optical axis shiftably, and a base disposed at a lower side of the lens holder. The lens holder driving device includes a contact area reduction arrangement reducing a contact area between the ring-shaped end portion of the outer yoke and an upper end portion of the lens holder.
Tue, 26 May 2015 08:00:00 EDTThe lens drive device is equipped with a first supporting body that holds the lens and is movable in the direction of the optical axis, a second supporting body that holds the first supporting body, a fixed body that holds the second supporting body in a manner enabling movement in directions that are roughly orthogonal to the optical axis direction, a first drive mechanism for driving the first supporting body, a second drive mechanism for driving the second supporting body in a first direction, and a third drive mechanism for driving the second supporting body in a second direction. The first supporting body is supported by the second supporting body by means of first supporting members which are formed from an elastic material; and the second supporting body is supported by the fixed body by means of second supporting members, which are formed from an elastic material.
Tue, 26 May 2015 08:00:00 EDTAn optoelectronic module 1 having at least a first 2A and a second 2B radiation-emitting source and a first optical element 5 including a cavity 10 wherein the surface 5A of the cavity 10 is able to reflect the radiation 3A, 3B of the at least two radiation sources. An outlet 15 in the optical element 5 is provided for coupling radiation out of the cavity 10, wherein the radiation emitted by the radiation sources 2A, 2B is reflected by the surface 5A of the cavity resulting in a mixing of the radiation.
Tue, 26 May 2015 08:00:00 EDTThere is provided a lens module including: a first lens including a first conical surface based on an optical axis and a first flat surface extending in a vertical direction with respect to the optical axis; and a second lens including a second conical surface based on an optical axis and a second flat surface extending in a vertical direction with respect to the optical axis, wherein the first conical surface and the first flat surface are connected by a first curved surface having a first radius, and the second conical surface and the second flat surface are connected by a second curved surface having a second radius.
Tue, 26 May 2015 08:00:00 EDTAn imaging lens includes negative first lens, negative second lens, third lens of a plano-convex shape having a convex surface directed toward an object side or of a positive meniscus shape having a convex surface directed toward the object side, and a fourth lens of a plano-convex shape having a convex surface directed toward an image side or of a positive meniscus shape having a convex surface directed toward the image side, which are arranged in this order from the object side. Further, the following conditional formula (6) is satisfied: 0.75≦(R8−R9)/(R8+R9)≦1.0 (6), where R8: a curvature radius of an object-side surface of the fourth lens, andR9: a curvature radius of an image-side surface of the fourth lens.
Tue, 26 May 2015 08:00:00 EDTA telephoto lens system and an electronic apparatus having the same are provided. The telephoto lens system includes a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a third lens group. The third lens group includes a (3-1)-th lens group having a positive refractive power, a (3-2)-th lens group having a negative refractive power, and a (3-3)-th lens group having a positive refractive power.
Tue, 26 May 2015 08:00:00 EDTAn image capturing lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element with positive refractive power has a convex object-side surface in a paraxial region thereof and a convex image-side surface in a paraxial region thereof. The second lens element has positive refractive power. The third lens element has positive refractive power. The fourth lens element with negative refractive power has a concave image-side surface in a paraxial region thereof, wherein both of an object-side surface and the image-side surface of the fourth lens element are aspheric. The image capturing lens system has a total of four lens elements with refractive power.
Tue, 26 May 2015 08:00:00 EDTAn image lens assembly system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element has refractive power. The second lens element has positive refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element has refractive power. The sixth lens element with refractive power is made of plastic material, and has at least one surface being aspheric. The seventh lens element with refractive power is made of plastic material and has a concave image-side surface, wherein the image-side surface thereof changes from concave in a paraxial region thereof to convex in a peripheral region thereof, and at least one surface thereof is aspheric.
Tue, 26 May 2015 08:00:00 EDTA photographing lens and an electronic device including the same are provided. The photographing lens includes a first lens, a second lens, a meniscus third lens, a meniscus fourth lens, and a fifth lens. The first lens has a positive refractive power and an object side lens surface that is convex toward the object side. The second lens has negative refractive power and an image side lens surface that is convex toward the image side. The meniscus third lens has a positive refractive power and an image side lens surface that is concave toward the image side. The meniscus fourth lens has a positive refractive power and an image side lens surface that is convex toward the image side. The fifth lens has a negative refractive power and an image side lens surface that is concave toward the image side around an optical axis.
Tue, 26 May 2015 08:00:00 EDTAn photographing optical lens assembly includes, in order from an object side to an image side, a first lens element with refractive power including a convex object-side surface, a second lens element with positive refractive power including a convex image-side surface, a third lens element with positive refractive power including a concave object-side surface and a convex image-side surface, a fourth lens element with negative refractive power, and a fifth lens element with positive refractive power including a convex object-side surface, a concave image-side surface and at least one inflection point. The surfaces of the fifth lens element are aspheric. By adjusting the photographing optical lens assembly, the total length of the photographing optical lens assembly is reduced, the aberration is corrected, and the image quality is improved.
Tue, 26 May 2015 08:00:00 EDTAn imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens; a fourth lens having negative refractive power; a fifth lens having positive refractive power; and a sixth lens, arranged in this order from an object side to an image plane side. The first lens is formed so that a surface thereof on the object side has a positive curvature radius. The sixth lens is formed so that a surface thereof on the object side and a surface thereof on the image plane side have positive curvature radii. Each of the first to sixth lenses has an Abbe's number within a specific range.
Tue, 26 May 2015 08:00:00 EDTIn a method for converting a light beam to a line focus, wherein the line focus extends according to its length along a first direction (y) and is narrow in a second direction (x) perpendicular to the first direction (y), the light beam is directed onto at least one conical optically operative surface, by which it is converted to the line focus. The light beam is directed onto the at least one optically operative surface with a ring-segment-shaped cross section transversely with respect to the light propagation direction. A device, in particular for carrying out the method, and an optical arrangement for generating a light beam with a ring-segment-shaped cross section are likewise described. In accordance with a further method and a further device, a line focus is generated only with spherical and/or cylindrical elements.
Tue, 26 May 2015 08:00:00 EDTA zoom lens includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having negative refractive power, a reflecting unit for bending an optical path, and a rear lens group including two or more lens units, wherein, during zooming, the first and second lens units are moved and the reflecting unit is not moved, and wherein an amount of movement of the first lens unit during zooming from a wide-angle end to a telephoto end, a distance on an optical axis from a reflecting surface of the reflecting unit to an image plane, a distance on the optical axis from a lens surface of the second lens unit closest to the image side to the reflection surface of the reflecting unit at the wide-angle end, and a focal length of the second lens unit are appropriately set.
Tue, 26 May 2015 08:00:00 EDTA zoom lens includes, in order from an object side to an image side: a first lens group having a positive refractive power; a second lens group having a negative refractive power; a third lens group having a positive refractive power; a fourth lens group having a negative refractive power; and a fifth lens group having a negative refractive power. During zooming from a wide-angle end state to a telephoto end state, air spacing between the first and second lens groups increases, air spacing between the second and third lens groups decreases, spacing between the third and fourth lens groups changes, and spacing between the fourth and fifth lens groups changes. Thus, all the lens groups are moved in an optical axis direction. The zoom lens satisfies the following Conditional Expression (1). 1.0
Tue, 26 May 2015 08:00:00 EDTA zoom lens includes, in order from an object side, a first unit that does not move, a negative second unit which moves during zooming, a positive third unit which moves during zooming, a positive fourth unit which moves during zooming and focus adjustment, an aperture stop that does not move in an optical axis direction, and a positive fifth unit which does not move, wherein Zinf representing a zooming ratio of the entire zoom lens when focused on infinity, β3winf and β3tinf representing lateral magnifications of the third unit at the wide angle end and a telephoto end, respectively, when focused on infinity, β4tinf and β5tinf representing lateral magnifications of the fourth unit and the fifth unit, respectively, at the telephoto end when focused on infinity, and f3 and f4 representing focal lengths of the third unit and the fourth unit, respectively, satisfy predetermined conditional expressions.
Tue, 26 May 2015 08:00:00 EDTProvided are an electrowetting prism device which has increased an aperture ratio by simplifying an electrode and wiring structure, and a 3D image display apparatus capable of providing a super multi-view 3D image using the electrowetting prism device. The electrowetting prism device includes lower and upper transparent substrates disposed against each other, a vertical wall mounted on the lower transparent substrate so as to form a diamond-shaped space, a first electrode arranged along two adjacent sidewalls of the vertical wall, a second electrode arranged along the other remaining two adjacent sidewalls of the vertical wall to be disposed against the first electrode, and a non-polarized liquid and a polarized liquid arranged within a space surrounded by the vertical wall.
Tue, 26 May 2015 08:00:00 EDTAn actuator assembly for an adjustable fluid-filled lens is provided. In some embodiments, the actuator assembly includes a clamp configured to adjust the optical power of the fluid lens module when the clamp is compressed. In some embodiments, a magnetic element is configured to adjust the optical power of the fluid-filled lens. In some embodiments, a plunger changes the optical power of the fluid lens module. In some embodiments, a reservoir is configured such that deformation of the reservoir changes the optical power of the fluid-filled lens. In some embodiments, a balloon is configured to deform the reservoir. In some embodiments, an adjustable fluid-filled lens includes a septum configured to be pierceable by a needle and automatically and fluidly seal a fluid chamber after withdrawal of the needle. In some embodiments, a thermal element can heat fluid within a fluid chamber to change an optical power of the lens module.
Tue, 26 May 2015 08:00:00 EDTDisclosed is an optical system for a head-mounted display, in which image rays provided from a display device are diverged to form and provide an enlarged image. First, second, and third lenses or first, second, third, and fourth lenses are sequentially disposed from an object along an optical axis and provide the enlarged image on an image plane, and angles of principal rays are gradually increased from the optical axis toward an edge of the image plane. Thus, as the angles of principal rays increase, the angle of view is improved to provide a large image so that it is possible to appreciate a vivid image due to an increase in the sense of presence and the degree of involvement. The size of the entire optical system can be reduced, thus a head-mounted display can be made compact and lightweight.
Tue, 26 May 2015 08:00:00 EDTIn order from the object side, a first lens having positive power with a convex observation-side surface, a second lens having negative power and a meniscus shape with a concave object-side surface, and a third lens having positive power with an observation-side surface having a smaller radius of curvature than that of an object-side surface are provided. The first, second and third lenses are single lenses. The conditional expressions (1): 0.9
Tue, 26 May 2015 08:00:00 EDTThe method includes the steps of: obtaining lateral magnification of an optical scanning system; obtaining the maximum value of thickness in the optical axis direction of an scanner lens; obtaining allowance b on one side and beam diameter a in the vertical scanning direction in the lens; and obtaining width h in the vertical scanning direction of the lens by the following expression h=a+2b. The allowance b is a product of the maximum value of thickness in the optical axis direction of the lens and a coefficient, and the coefficient is determined according to the lateral magnification of the system in such a way that the maximum value of movement of the focal point of the lens due to moisture absorption is made smaller than or equal to a predetermined value.
Tue, 26 May 2015 08:00:00 EDTAn exemplary video wall includes two display panels and a mullion elimination structure. The display panels each include a main body and a bezel. The mullion elimination structure includes a triangular prism and two transparent quadrangular prisms. The triangular prism includes a first bottom and two opposite first sides. The first bottom is attached to and covers two adjacent bezels of the display panels. The transparent quadrangular prisms each include a second bottom attached to the main body of one display panel, a second side, and an opposite third side . The third side is attached to the corresponding first side of the triangular prism. The second side is coated with a transflective film for partially transmitting and partially reflecting light incident thereon. A reflective surface is formed between the first sides of the triangular prism and the second sides of the quadrangular prisms for reflecting light incident thereon.
Tue, 26 May 2015 08:00:00 EDTThe invention relates to a display arrangement (1) for a motor vehicle, for displaying information for an occupant (12) of the motor vehicle. To be able to display the information as cost-effectively as possible in two display areas (4, 5) of the motor vehicle, the invention provides that the display arrangement (1) has an image splitter (9) for separating at least two juxtaposed image sections (B1, B2) of the image.
Tue, 26 May 2015 08:00:00 EDTAn optical element includes a first microlens array unit and a second microlens array unit in each of which a plurality of microlenses are arranged. The first and second microlens array units are arranged opposite to each other with a distance which is longer than a focal length of the microlenses arranged in the first microlens array unit. The first microlens unit is arranged on a light-incident side with respect to the second microlens array unit. The interval between the microlenses arranged in the second microlens array unit is narrower than the interval between the microlenses arranged in the first microlens array unit. The optical element can appropriately suppress the occurrence of excessive pixel bright spot.
Tue, 26 May 2015 08:00:00 EDTThe general field of the invention is that of the display systems comprising an optical combiner and a removable sun visor. The optical combiner is a semi-reflecting plate and the sun visor is a thin, thick and tinted plate, the sun visor comprising means for mechanically fastening on the optical combiner. The optical combiner comprises, on a first side, a first mechanical piece and, on a second side opposite to the first side, a second mechanical piece, the optical sun visor comprises, on a first side, a third mechanical piece and, on a second side opposite to the first side, a fourth mechanical piece in the form of a clip, the third mechanical piece being able to be sunk into the first mechanical piece so as to form a hinge, the rotation axis of which is parallel to the first side of the optical combiner, the fourth mechanical piece being able to be clipped into the third mechanical piece so as to lock the sun visor on the combiner.
Tue, 26 May 2015 08:00:00 EDTThe present invention relates to a method of applying an anti-reflective coating to an optical surface of a mold. In one embodiment, the method includes the steps of: providing a lens mold having an optical surface; forming a layer of a super hydrophobic material with a thickness of about 30 to 40 nm over the optical surface, wherein the super hydrophobic material contains dipodal silane; forming an anti-reflective coating layered structure over the layer of the super hydrophobic material; and forming a layer of a cyclic azasilane coupling agent that is deposited with a monolayer thickness to the anti-reflective coating layered structure using vapor deposition or by dip coating using a solution of cyclic azasilane coupling agent in an aprotic solvent.
Tue, 26 May 2015 08:00:00 EDTA leaky-mode resonant retarder is described. The retarder may include a substrate and a spatially modulated periodic layer coupled to the substrate, where the spatially modulated periodic layer is configured to shift a phase between two perpendicular electric-field components of incident light. The retarder may operate as a half-wave plate or a quarter-wave plate.
Tue, 26 May 2015 08:00:00 EDTMethod and apparatus to generate a composite far field beam having a central null and discrete cylindrical symmetry. A phased array of Gaussian beams was used to form an annular far-field pattern as opposed to the normal peaked pattern in most phased arrays. This annular pattern arises from the radial symmetry of the polarization in each beam. Beams opposite one another in the annulus are polarized in the same direction but are 180° out of phase. This causes the center portion of the beam to be a null rather than a peak.
Tue, 26 May 2015 08:00:00 EDTAn optical film has a cellulose acylate film base material containing cellulose acylate and a plurality of sugar ester compounds having different ester substitution degrees in which an average ester substitution degree of the plurality of sugar ester compounds is from 60 to 94%, and an antistatic hardcoat layer formed from a coating composition containing at least an organic antistatic agent and a curable compound having a (meth)acryloyl group in a molecule of the curable compound.
Tue, 26 May 2015 08:00:00 EDTThe present disclosure relates to an apparatus for displaying a stereoscopic image, and there is provided an image display method, and the method may include acquiring information on a user's face; determining whether to allow a stereoscopic image based on the face information; and displaying an image based on a result of the determination as to whether to allow a stereoscopic image. Hence, according to the present invention, a person disqualified for viewing a stereoscopic image may be prevented from viewing TV in a stereoscopic image mode.
Tue, 26 May 2015 08:00:00 EDTA method and system for autostereoscopic display of stereoscopic images may include: illuminating at least one light source; configuring a lightguide to direct light from at least one light source to a first focal point; configuring a transmissive optical display according to a first stereoscopic image of a stereoscopic image pair; configuring the lightguide to direct light from at least one light source to a second focal point; and configuring the transmissive optical display according to a second stereoscopic image of the stereoscopic image pair.
Tue, 26 May 2015 08:00:00 EDTOne embodiment includes a system for mounting a specimen on a slide, the system having an immersion chamber, a stage, and a pump. The immersion chamber is configured to hold a liquid and comprises at least one wall, a closed bottom, and an open top. The stage is configured to support the slide, and the stage is arranged within the immersion chamber such that the specimen may be supported substantially above the stage by the liquid. The pump is configured to draw the liquid from the immersion chamber such that the level of liquid in the immersion chamber decreases and the specimen is dispensed onto the slide.
Tue, 26 May 2015 08:00:00 EDTIlluminating arrangement for a microscope (200) having a first LED (10) for providing light with a first intensity spectrum (K1) with at least two intensity maxima and an intensity minimum located between the intensity maxima, and at least one further LED (20) for providing light with a further intensity spectrum (K2) respectively, each further intensity spectrum (K2) having an intensity maximum in the region of the intensity minimum of the first intensity spectrum (K1), and a device (30) for merging the light of the first LED (10) and the light of the at least one further LED (20), by means of which illuminating light can be produced with a combined intensity spectrum (K3) composed of light with the first intensity spectrum and light with each of the further intensity spectra.
Tue, 26 May 2015 08:00:00 EDTA microscope includes a light source including an LED device having a light radiating surface and a light directing element including a larger coupling-out surface. The light directing element is disposed so as to couple in light radiated by the light source and couple out the radiated light from the coupling-out surface. The light directing element is disposed so that the light is radiated out in an angular range of ±10° to ±50° and illuminates an area at 5 meters in an angular range of at least ±5° with intensity fluctuations of less than 50%. A condenser is disposed between the coupling-out surface of the light directing element and the object to be viewed. The condenser has an aperture with an aperture dimension and is disposed such that the aperture is irradiated completely with the light coupled out from the coupling-out surface.
Tue, 26 May 2015 08:00:00 EDTA device in the form of a scanning microscope, a device in the form of a structural unit for a microscope and a method and a device for optically scanning one or more samples. A device in the form of a scanning microscope has a light source (42), which emits an illuminating light beam (32). A focusing lens system (34) focuses the illuminating light beam (32) on a region to be examined of a sample (36). An actuator arrangement moves the focusing lens system (34) according to a prescribed scanning pattern transversely in relation to a center axis of the illuminating light beam (32) and/or in relation to a housing of a structural unit (20) that encloses the focusing lens system (34).
Tue, 26 May 2015 08:00:00 EDTThe invention relates to a passive device for the coherent combination of at least two optical amplifiers. According to the invention, said device comprises an interferometer having at least four branches (B1, B2, B3, B4) and comprising optical means for separating and combining polarization, said means having four inlet-outlet ports that are respectively connected to a branch. The first branch comprises a first polarization means, a first optical amplifier and a first mirror; the second branch comprises a second polarization means, a second optical amplifier and a second mirror; the third branch comprises a third polarization means and a third mirror; the fourth branch (B4) is an inlet-outlet branch of the interferometer; and the first, second and third polarization means are designed such that a polarized optical beam entering respectively into the first, second or third branch and reflected by the mirror at the end of said branch forms a polarized optical beam that leaves said branch with a polarization that is orthogonal to the polarization of the polarized optical beam entering said branch.
Tue, 26 May 2015 08:00:00 EDTAn optical semiconductor device includes: semiconductor lasers; a wave coupling section multiplexing light output by the semiconductor lasers; first optical waveguides respectively optically connecting respective semiconductor lasers to the wave coupling section; a phase regulator regulating phase of reflected light that is reflected at a reflecting point located in the optical semiconductor device and that returns to the semiconductor lasers; a second optical waveguide optically connecting the wave coupling section to the phase regulator; an optical amplifying section amplifying output light of the phase regulator; and a third optical waveguide optically connecting an output of the phase regulator to the optical amplifying section. The phase regulator adjusts the phase of reflected light that returns to the semiconductor lasers to decrease line width of the light output by the semiconductor lasers.
Tue, 26 May 2015 08:00:00 EDTMethods, systems, and apparatus for optical communications. In one aspect, an optical amplifier includes a feed-forward first amplification stage including a rare-earth doped fiber receiving an optical signal and an injected pump light; and a plurality of subsequent amplification stages each including a corresponding rare-earth doped fiber, wherein each of the subsequent amplification stages receives a separately injected portion of the remnant pump light from the first amplification stage, the remnant pump light being split into portions directed to each respective subsequent amplification stage.