Abstract: An illumination system comprises an exciting light source, a phosphor wheel, a first lens, a first reflector, and a light uniforming element. The exciting light source emits an excitation beam. In a first time sequence, the phosphor wheel reflects the excitation beam to the first reflector, the first reflector reflects the excitation beam to the first lens and the excitation beam passes through the first lens and transmits to the light uniforming element. In a second time sequence, the phosphor wheel converts the excitation beam to a conversion beam, the conversion beam from the phosphor wheel passes through the first lens and transmits to the first reflector, the first reflector reflects the conversion beam to the first lens, the conversion beam passes through the first lens and transmits to the light uniforming element, the excitation beam and the conversion beam, sequentially and respectively transmits to the light uniforming element.

Abstract: An imaging system, including a light valve and a projection lens, is provided. The projection lens has a reduction side and a magnification side, and includes a lens group and a convex mirror. The light valve is configured on the reduction side. The projection lens is configured to image the beam from the light valve on a projection surface, and the projection surface is configured on the magnification side. There is an included angle between the projection surface and a light receiving surface. The lens group is configured on an optical path between the magnification side and the reduction side, and includes first to seventh lens elements sequentially arranged from the magnification side to the reduction side. The refractive powers of the first to seventh lens elements are respectively negative, negative, positive, positive, negative, positive, and positive. The convex mirror is configured on an optical path between the lens group and the magnification side.

Abstract: An augmented reality display apparatus and method, which relates to the display technology, and may display the shielding relationship between a virtual image and a real image intuitively, so as to blend the virtual image into the real image better. The augmented reality display apparatus comprises a virtual image data extractor, a real image data extractor and an image controller. The image controller is connected with the virtual image data extractor and the real image data extractor respectively, and configured to determine coincide data based on virtual image data and real image data, and obtain visual object information of the coincide data, based on which a content corresponding to the visual object is controlled to be in a display state, and a content corresponding to the non-visual object is controlled to be in a non-display state. The augmented reality display apparatus may be configured to display images.

Abstract: A virtual image display apparatus includes a display device (image forming unit), a lens configured to refract imaging light from the display device, a first mirror member configured to reflect imaging light that passed through the lens, a second mirror member being a refractive reflective optical member configured to reflect the imaging light reflected by the first mirror member, and a third mirror member of a transmissive type configured to reflect the imaging light reflected by the second mirror member toward a position of an exit pupil. The refractive reflective optical member includes, across a refractive member, a refractive surface and a mirror surface. The lens and the refractive reflective optical member are integrated as a composite member.

Abstract: A robust and easy to install obstruction illuminator is herein disclosed. The obstruction illuminator features an elongated body with a first end and a second end opposing the first end. The body of the obstruction illuminator has an inner cavity, which extends between the first and second end. An artificial light source is fitted to the first end of the body and an emission lens is fitted to the second end of the body. The artificial light source is configured to emit light into the cavity towards the second end. An optical condenser element is provided into the inner cavity of the body between the artificial light source and the emission lens. The optical condenser element receives light from the artificial light source as well as condenses and directs the condensed light toward the emission lens. The emission lens refracts the light into a pattern suitable for warning about the presence of an obstacle.

Abstract: A present disclosure relates to a projector including a light source, an excitation light source, a wavelength converter, a collimator system that parallelizes fluorescence outputted from the wavelength converter, a light separator that separates the fluorescence into second light and third light, a correction lens provided in an optical path of the second or third light, a superimposing lens, a light modulator having a plurality of pixels each including first, second, and third sub-pixels, a microlens array including a plurality of microlenses corresponding to the plurality of pixels, and a projection optical apparatus. First light is incident on a first position on the superimposing lens, the second light is incident on a second position on the superimposing lens, and the third light is incident on a third position on the superimposing lens.

Abstract: A method for generating a composite image includes receiving a first image that includes an eyeglass lens illuminated by a first illumination source radiating electromagnetic radiation in a first polarization state, and receiving a second image that includes the eyeglass lens illuminated by a second illumination source radiating electromagnetic radiation in a second polarization state. The second polarization state is different from the first polarization state, and the second illumination source is spatially separated from the first illumination source. The method also includes identifying, in the first image, a first portion that represents a reflection of the first illumination source on the eyeglass lens, and generating the composite image in which the first portion is replaced by a corresponding second portion from the second image. The first portion and the second portion represent substantially a same portion of the eyeglass lens.

Abstract: A head-mounted device may include a display system and an optical system in a housing. The display system may have displays that produce images. The optical system may have Fresnel lenses through which a user of the head-mounted device may view the images. The Fresnel lenses may have concentric rings with slope facets and draft facets angled parallel to the chief rays. Light scattering in the Fresnel lenses may be reduced by coating the draft facets with opaque masking material and/or by aligning concentric rings of the opaque masking material that are supported on a transparent substrate with the draft facets. A central portion of the Fresnel lens that is free of facets may be enlarged to reduce scattering. The Fresnel lenses may have wedge-shaped cross-sectional profiles and may have outer portions that are thicker than inner portions. Gradient-index material may be used in forming the Fresnel lenses.

Abstract: A lighting control unit of a light assembly includes a first plate, a power circuit board configured to receive power for the light assembly, a light blender configured to transform movement information into one or more control signals to modify one or more lighting parameters associated with a light source of the light assembly, and a second plate with a first side, wherein the light blender is mounted on the first side, and the second plate is rotatable in relation to the first plate.

Abstract: There is provided a light source device including a first light source that emits light in a first wavelength region, a second light source that emits light in a second wavelength region different from the first wavelength region, a wavelength conversion unit including a fluorescent material and emits fluorescent emission light in a different wavelength region upon irradiation with the light in the first wavelength region, and a combining unit that has wavelength selectivity to a specific wavelength region corresponding to the second wavelength region and combines the light in the first wavelength region from the first light source, the light in the second wavelength region from the second light source, and the fluorescent emission light which are incident on the combining unit with one another.

Abstract: An illumination device (10) includes: a light diffusion device (50) including element diffusion devices (55) that diffuse incident light; a coherent light source (15) that emits coherent light; a shaping optical system (20) that shapes the coherent light; a scanner (30) that adjusts a traveling direction of the coherent light so as to allow the coherent light to scan the light diffusion device; and a light condensing optical system located on a light path of the coherent light from the shaping optical system up to the light diffusion device. The light condensing optical system condenses the coherent light such that a spot area on the light diffusion device is smaller than the element diffusion device. Each element diffusion device diffuses the coherent light incident thereon so as to illuminate an element illumination area corresponding to the element diffusion device.

Abstract: The present invention provides an illumination optical system that illuminates a surface to be illuminated by using a light beam from a light source, comprising: an optical element configured to transmit the light beam from the light source; and a member that has an incident surface on which the light beam transmitted through the optical element is incident, wherein the optical element has a first region including a central portion of the optical element, and a second region outside the first region, and wherein the optical element is formed so as to overlap a part of a light beam which is transmitted through the first region and a part of the light beam which is transmitted through the second region, on the incident surface.

Abstract: A projection optical system consists of, in order from the magnification side, a first optical system, which consists of one convex mirror and a plurality of lenses disposed on the reduction side of the convex mirror, and a second optical system. The lens closest to the magnification side in the first optical system is a negative lens. Assuming that a paraxial radius of curvature of the convex mirror is Mr and a focal length of the negative lens closest to the magnification side in the first optical system is fL1, Conditional Expression is satisfied: 0<Mr/fL1<4.5.

Abstract: A projection optical system forms an intermediate image at a position conjugate to a reduction side imaging surface, and forms a final image conjugate to the intermediate image on a magnification side imaging surface. The projection optical system includes a convex mirror disposed to be closer to the magnification side than the intermediate image and at least one lens that has a positive or negative refractive power and is disposed in an optical path so as to be closer to the magnification side than the convex mirror.

Abstract: The invention relates to an illumination unit that encompasses two light sources arranged one behind another in a channel . A cooling unit is provided respectively at the two ends of the channel. The invention further relates to an energy supply unit for supplying the illumination unit with electrical energy. The energy supply unit encompasses two energy sources arranged in a channel. Respective cooling units are arranged at the two ends of the channel.

Abstract: The present invention provides an image processing method, system for laser TV and the laser TV set thereof, which receives a TV signal before converting into ultra high definition images sequences; whose each image is then segmented and converted into two frames of image, and two sequences of image will then be obtained; which are then driven by two DMD driving chips and displayed in a time share and diagonal staggered way during a period satisfying a visual persistence. The present invention utilizes a principle of visual persistence, since two frames of image segmented from a frame of ultra high definition image may be processed at a same time by two existing DMD driving chips being able to process FHD images, and both frames of image may be displayed at different positions on the screen at different time, forming one frame of ultra high definition image in a human's vision.

Abstract: A virtual curved surface display panel, a method of manufacturing the same, and a display device are provided. A set of vertical lenticular lens and horizontal lenticular lens fitted tightly and orthogonally is arranged on a light exit surface of a pixel in the flat display panel, which forms an equivalent spherical lens. The focal lengths of the equivalent spherical lenses are symmetrically distributed with a central pixel as a symmetry axis, and focal lengths of the equivalent spherical lenses in the columns located on the same side of the symmetry axis are not equal to each other. Therefore, the equivalent spherical lenses enable the images of the pixels to form a curved surface, thereby realizing virtual curved surface display.

Abstract: According to the present invention, there is provided a light diffusion film for diffusing incident light into an elliptical shape, which contains, inside the film, a structure composed of a plurality of flaky-shaped objects with comparatively high refractive index arranged in multiple rows in a region with comparatively low refractive index along any one arbitrary direction along the film plane. If T50 (?m) is the width of the flaky-shaped objects at a position of 50 ?m below the upper end of the flaky-shaped objects in the direction of the thickness of the light diffusion film, and if L50 (?m) is the length of the flaky-shaped objects in the above-mentioned arbitrary one direction, the following relation (1) is satisfied: 0.05?T50/L50<0.

Abstract: A symbol display element for a vehicle interior is proposed, which comprises a front cover formed by a diffusing lens. A shadow mask is arranged in the optical path between the diffusing lens and a plurality of point light sources which can be activated separately, and includes for each point light source an associated symbol which is projected in an enlarged manner onto the rear side of the diffusing lens upon activation of the corresponding point light source. With this easily realizable configuration of the display element, the different symbols share a common display surface on the diffusing lens which acts as a rear projection screen.

Abstract: According to an embodiment of the invention, an apparatus to detect fluorescence from a sample is disclosed. The apparatus comprises a sample plane onto which the sample is arranged, an excitation light unit including at least a light source to illuminate the sample, and a detection unit comprising at least a detector having at least 100,000 active detection elements to detect a fluorescence signal from the sample.

Abstract: A system including a light source configured to illuminate light onto an image modulation element; a projection optical system including at least a first lens system and a second lens system configured to project the image modulated by the modulation element; and circuitry configured to shift a position of the first lens system in a direction perpendicular to an optical axis of the projection optical system based on an optical zoom factor, wherein a position of the image modulation element is unchanged when the circuitry shifts the position of the first lens system.

Abstract: A light source unit includes a laser diode and a collimator lens having an entrance portion and an exit portion, with light emitted from the laser diode being incident light which is caused to enter the collimator lens. The laser diode is disposed so that a direction of a major axis of an elliptic cross section which intersects an axis of the incident light at right angles is defined as a direction of a first axis, and the entrance portion includes an elongated recess portion which is formed into a recess shape which is curved inwards towards a direction in which the incident light exits. In addition, a recessed edge of the elongated recess portion in a cross section, which intersects the first axis at right angles, is formed into an arc shape, and the incident light which enters the entrance portion is caused to exit from the exit portion.

Abstract: There is provided a projection optical system capable of projecting an image formed on an image forming unit on a projection plane, which has an extremely short projection distance and a small size.

Abstract: To provide a heat dissipating device which enables the fabrication of a small and highly bright light source unit and a light source unit and a projector which include this heat dissipating device, a heat dissipating device is provided which includes a fixing portion which fixes a first light source, a first heat dissipating portion having a plurality of fins provided on a rear surface side of the fixing portion, a flat plate portion erected from the fixing portion and a second heat dissipating portion having a plurality of fins provided on the flat plate portion.

Abstract: The present invention is an improvement in glasses-free autostereoscopic three dimensional image viewing systems. In particular, it comprises transmissive front projection and reflective rear projection screens with high optical efficiency and precision that facilitate the use of multiple low-cost digital projectors to display multiple perspective views of the displayed scene in well defined virtual apertures in the viewing region. In certain applications the invention facilitates indefinitely wide three dimensional displays that accommodate large groups of observers.

Abstract: A projection optical system comprises an image forming unit that forms an image; a refractive optical system including a plurality of lenses that enlarges and projects the image on a screen; and a reflecting surface, wherein an intermediate image is formed between the refractive optical system and the reflecting surface, and the projection optical system satisfies conditions of “0.6<D/Did<0.8” and “2.5<Did/F<6”, where “Did” represents a maximum paraxial image height of the intermediate image in a focusing state in which a projection image is maximum, “D” represents a maximum value of a distance between an optical axis and an intersection of a paraxial image surface and a light beam passing center of an aperture stop of the refractive optical system, and “F” represents a focal length of the refractive optical system in a focusing state in which the projection image is maximum.

Abstract: In general, in one aspect, the invention features a system that includes an illumination system of a microlithography tool, the illumination system including a first component having a plurality of elements. During operation of the system, the elements direct radiation from a source along an optical path to an arc-shaped object field at an object plane of a projection objective, and at least one of the elements has a curved shape that is different from the arc-shape of the object field.

Abstract: A lighting apparatus has a light source emitting primary light; a reflector device with first and second focal points; a rotatable light wheel with two functional regions; a primary light device irradiated by the light source and having functionally assigned to it one of the functional regions as a primary light functional region, the first focal point being located at the primary light device; a utility light device to which is functionally assigned another of the functional regions as a utility light functional region, the second focal point being located at the utility light device; a primary light functional region having in a first rotational position of the light wheel at least one phosphor sensitive to the primary light; and a utility light functional region being transmissive to the light whose wavelength is converted by the primary light functional region.

Abstract: An illumination optical system includes a first compression system configured to compress a light flux on each of first and second sections, a second compression system configured to compress the light flux on the first section, a polarization converter arranged so that a section that contains a normal of the second polarization splitting surface and the optical axis becomes the second section, and configured to convert non-polarized light into linearly polarized light, a first lens array arranged in front of the polarization converter along an optical path, and a second lens array arranged between the first lens array and the polarization converter along the optical path. Both of the first lens array and the second lens array have no optical power on the second section.

Abstract: A luminaire has a light source and a shell integrator. The shell integrator has a transparent dome over the light source, with inner and outer surfaces formed as arrays of lenslets. Each lenslet of the inner surface images the light source onto a respective lenslet of the outer surface, and each lenslet of the outer surface images the respective lenslet of the inner surface as a virtual image onto the light source. The dome may be substantially hemispherical. The light source and the integrator may be at an input of a collimator.

Abstract: A lithography method and apparatus is disclosed herein. In a described embodiment, the method comprises (i) providing a first mask having an exposure pattern for forming a three dimensional structure; (ii) exposing the first mask to radiation to form the exposure pattern on a radiation-sensitive resist; the exposure pattern defined by irradiated areas and non-irradiated areas of the resist; (ii) providing a second mask; and (iii) during exposure, changing relative positions between the first mask and the second mask to shield selected portions of the irradiated areas from radiation to enable varying depth profiles to be created in the three dimensional structure.

Abstract: An illuminating optical system suppresses deterioration in utilization efficiency of illuminating light and generation of fluctuations in light emission without increasing apparatus size. The illuminating optical system includes a plurality of light sources of different types, a light combining optical system that combines light beams output from each of the light sources such that they converge at a single position, and a rod integrator that uniformizes the light intensity distributions of the light beams which are converged at the single position that enter a first end thereof and outputs the light beams, of which the light intensity distribution has been uniformized, from a second end thereof. The light combining optical system includes relay optical component sets corresponding to each of the light sources, and the relay optical component sets have relay magnification ratios different from each other.

Abstract: There is provided a projection optical system capable of projecting an image formed on an image forming unit on a projection plane, which has an extremely short projection distance and a small size.

Abstract: An illumination light beam forming device, including a first light source unit projecting a ring shaped light beam group, a second light source unit projecting light beams including a case the light beams being group, a combining unit for combining the light beam group projected from the first light source unit and light beams projected from the second light source unit, in which the combing unit includes a reflecting part formed to reflect one of the light beam groups, a transmitting part disposed able to transmit the other one of the light beam groups, and light beams projected from the second light source unit are disposed at an internal side of the light beam groups projected from the first light source unit when the two light beam groups are viewed from a plane including the reflecting part.

Abstract: A projector can include a projection lens that is positioned substantially one focal length away from a spatial light modulator. The projector may also include a non-imaging optic configured to illuminate the spatial light modulator. The non-imaging optic may include a light emitter and an etendue-preserving reflector. The projector can be configured to project an image created by the spatial light modulator at a distance using light from the non-imaging optic.

Abstract: A projector can include a projection lens that is positioned substantially one focal length away from a spatial light modulator. The projector may also include a non-imaging optic configured to illuminate the spatial light modulator. The non-imaging optic may include a light emitter and an etendue-preserving reflector. The projector can be configured to project an image created by the spatial light modulator at a distance using light from the non-imaging optic.

Abstract: A projection apparatus includes a light source, a light valve, a light uniforming device, and a lens module. The light source provides an illumination beam. The light valve on a transmission path of the illumination beam converts the illumination beam into an image beam. The light valve has an active surface with a rectangular shape. The light uniforming device is between the light source and the light value. The lens module is between the light uniforming device and the light value. A refractive power of the lens module along a first direction is different from a refractive power of the lens module along a second direction. An f-number of the illumination beam along a direction parallel to a long side of the active surface of the light valve is greater than an f-number thereof along a direction parallel to a short side of the active surface of the light valve.

Abstract: A projection device having an image beam and an off-state light is provided, which includes a camera module, a condensing element, a digital micromirror device (DMD) and a shading element, wherein the DMD allows the image beam to enter the camera module, and the shading element is configured between the DMD and the condensing element to block the off-state light.

Abstract: A support stand made of sheet metal is cooperated with an optical module and a reflective module. The support stand includes a base and a back frame. The optical module is disposed on the base. To enhance its structural rigidity, the base substantially has a “” or inverted “U” shape as viewed from an optical axis. The back frame is connected with the base, and the reflective module is disposed on the back frame. An optical apparatus with the above support stand is also disclosed.

Abstract: A light emitting device includes a first layer that generates light by an injection current, the first layer is provided with a first optical waveguide extending from a first light emitting section disposed on a first side surface to a first light reflecting section disposed on a second side surface, a second optical waveguide extending from the first light reflecting section to a second light reflecting section disposed on a third side surface, and a third optical waveguide extending from the second light reflecting section to a second light emitting section disposed on the first side surface, and an element of the group II or the group XII is diffused in the first light reflecting section and the second light reflecting section.

Abstract: To provide an illumination device and a projection type image display device that illuminate an area to be illuminated (image formation area) under conditions where speckle noise is less noticeable. An illumination device according to the present invention includes: a light source 11 that emits coherent light; an optical scanning section 15 that scans the coherent light emitted from the light source 11; and an optical path conversion system 21 configured to allow the coherent light scanned by the optical scanning section 15 to illuminate an area to be illuminated sequentially in an overlapping manner. An incident angle of the coherent light that enters respective points of the area to be illuminated changes with time.

Abstract: A projective optical system comprises: a lens optical system including lenses; and a transmissive optical element having an anamorphic surface and being provided in an optical path between the lens optical system and a projected surface, wherein the transmissive optical element has a curvature with respect to a direction corresponding to a long side of a display screen of the image display element, and on a cross-sectional surface being perpendicular to the long side of the display screen, and with respect to light being emitted from the lens optical system and being incident to the transmissive optical element, a light intensity of a first light flux being incident to the transmissive optical element at a first incident angle is lower than a light intensity of a second light flux being incident to the transmissive optical element at a second incident angle being larger than the first incident angle.

Abstract: Disclosed is a projector, the projector including a light source, an illumination unit illuminating light incident from the light source, and a display device enabling to realize an image by receiving the light irradiated from the illumination unit, and whose center is positioned at an axis different from an optical axis of the illumination unit.

Abstract: An optical projection system for projecting an enlarged image on a projection surface is provided. The optical projection system includes an image forming element, a coaxial optical system and a concave mirror. The coaxial optical system and the concave mirror are arranged in this order on an optical path from the image forming element to the projection surface. The coaxial optical system includes lens groups and an aperture stop that share an optical axis. The lens groups include a first lens group and other lens groups. The first lens group has negative refractive power and independently moves in an optical axis direction for adjusting the focus of the optical projection system. The aperture stop is arranged at a position closer to the image forming element than the first lens group that is arranged closest to the concave mirror among the lens groups having the negative refractive power.

Abstract: A projector optical system is provided, the system including an illumination unit including illumination lenses illuminating light downwards, a display device receiving light illuminated from the illumination lenses to enable to realize an image, projection lenses downwardly projecting light emitted from the display device to a screen, and a field lens changing an optical angle of the light illuminated from the illumination lenses and emitting the light to the display device, and changing an optical angle by receiving an image light of the display device and emitting the light to the projection lenses.

Abstract: An illumination system and a projection device comprising the same are provided. The projection device comprises an imaging system and the illumination system. The illumination system comprises a first light source, a dichroic element, at least one condensing element, a rotary wheel and a light integrating element. The first light source provides a first wave band light, and the rotary wheel has at least one wave band transforming area and a reflecting area. After passing through the dichroic element and the at least one condensing element, the first wave band light will be focused onto the at least one wave band transforming area to be transformed into a second wave band light or be focused onto the reflecting area that will be reflected. The second wave band light and the reflected first wave band light will be focused on the light integrating element by the at least one condensing element.

Abstract: Some embodiments provide for a modular video projector system having a light engine module and an optical engine module. The light engine module can provide narrow-band laser light to the optical engine module which modulates the laser light according to video signals received from a video processing engine. Some embodiments provide for an optical engine module having a sub-pixel generator configured to display video or images at a resolution of at least four times greater than a resolution of modulating elements within the optical engine module. Systems and methods for reducing speckle are presented in conjunction with the modular video projector system.

Abstract: A 3D image convertible projection system for viewing an image broadcasted as a 3D image or an image from a 3D DVD, etc., using a general projector in which a general projector receives a left-eye image and a right-eye image for the 3D image in one frame and projects them toward a projection lens. The 3D image projection system is configured so that the left-eye image and the right-eye image having a 2D form, which are projected from a general projector, are magnified so that a vertical magnification rate is 0 and a horizontal magnification rate is 1.5-2.5 times and at the same time divides the images into leftward and rightward directions. The optical system includes a first and second curved surface mirrors or a left and right symmetric eccentric curved surface lens, and a second set of mirrors for reflecting and magnifying the images to be projected toward a screen.

Abstract: An imaging optical system includes a lens unit that includes a plurality of optical elements, and an optical path combining portion that includes a flat plate disposed so as to be inclined with respect to an optical axis of the lens unit, and the lens unit includes a correction portion that has a shape asymmetric with respect to the optical axis in a cross section that is parallel to both a normal of the flat plate and the optical axis.

Abstract: In a projection optical system for use in an image projection apparatus illuminating an image display panel forming an image in accordance with a modulating signal with illumination light from a light source, the projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the image display panel. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the image display panel is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected.