Abstract: There is provided an optical system including: a first lens having positive refractive power and having a convex object-side surface; a second lens having positive refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a sixth lens having refractive power; and a seventh lens having negative refractive power and having a concave image-side surface, wherein the first to seventh lenses are sequentially disposed from an object side, whereby an aberration improvement effect may be increased and a high degree of resolution may be realized.

Abstract: The present invention relates to a diffuser and a method of manufacturing the same, and more particularly, to a diffuser and a method of manufacturing the same, in which light emitted through the diffuser forms an asymmetric light output pattern. A diffuser according to an exemplary embodiment is a diffuser that forms an asymmetric light output pattern by diffusing laser beams received from a laser source, the diffuser including: a base; and a micro lens array disposed on the base, in which the micro lens array has a plurality of micro lenses each comprising a lower surface and a curved surface disposed on the lower surface, and the lower surface has horizontal and vertical lengths different from each other.

Abstract: A display media particle used for an information display panel having display media constituted of particles sealed between two substrates, at least one of which is transparent, for displaying information by moving the display media, is formed of a mother particle 32 made from materials including a base resin having child particles 33 added to a surface thereof. The base resin is a thermoplastic resin having a viscosity of no more than 1000 Pa·s at 260° C. and a shear rate at 122 s?1, and a heatproof temperature at no less than 430° C. Since optimal conditions of the viscosity and the heatproof temperature are specified, it is possible to round the resin effectively by a heat treatment for spheronization as a post-treatment after manufacturing.

Abstract: A preferred embodiment comprises a dynamic display based on a program image element which will only generate a preprogrammed image. As an example, the image element may comprise electrically-driven MEMS mirrors. This example may be embedded in an ID card. At the time of issue of the ID card, pixels in the mirror array will be permanently programmed as either ‘alive’ or ‘dead’ in a pattern matching the photo of the person in question. When stimulated, only ‘alive’ pixels will actuate, creating an image for comparison to the adjacent printed photo. Due to its dynamic behavior, delicate mechanical structures, and single-time hard-wiring, duplication of, or tampering with, this secondary dynamic image will be nearly impossible. The ID car is but one exemplary application and other embodiments, applications, and methods are described in the specification and claims.

Abstract: A lens assembly includes a barrel having an object-side opening and an image-forming-side opening. The barrel further has a positioning section that positions an image-forming-side surface of a lens by having line contact around an optical axis at a center. The positioning section is disposed at a position that is closer to an object side than the image-forming-side opening of the barrel is. The barrel also has an image-forming section that extends from the positioning section to a center of the optical axis along the image-forming-side surface of the lens and forms an edge of the image-forming-side opening of the barrel.

Abstract: An optical sheet comprises: a base film; a first primer layer disposed on a surface of the base film; and a projection disposed on the first primer layer, wherein a thickness of the first primer layer ranges from about 5 nm to 300 nm.

Abstract: An erecting equal-magnification lens array plate includes a stack of a plurality lens array plates built such that pairs of corresponding lenses form a coaxial lens system, where each lens array plate is formed with a plurality of convex lenses on both surfaces of the plate. The plate receives light from a substantially straight light source facing one side of the plate, and the plate forms an erect equal-magnification image of the substantially straight light source on an image plane facing the other side of the plate. A light shielding member operative to shield light not contributing to imaging is formed in the neighborhood of a position in the intermediate plane in the erecting equal-magnification lens array plate where an inverted image of the substantially straight light source is formed. The main lens arrangement direction of the convex lenses differs from the main scanning direction of the erecting equal-magnification lens array plate.

Abstract: For combining light from different light sources that are spatially apart, an optical system comprises a prism assembly that comprises a totally-internally-surface and a dichroic filter. The totally-internally-surface and the dichroic filter are configured for reflecting light of different colors or polarizations, so as to combine light of different polarization or colors into a single beam.

Abstract: A beam delivery system of a projection exposure system comprises a laser generating a beam of laser light from a plurality of longitudinal laser modes in a cavity, wherein light generated by a single longitudinal laser mode has an average line width ?lat, wherein the laser light of the beam has, at each of respective lateral positions of the beam, a second line width ?lat corresponding to lateral laser modes, and wherein the laser light of the beam has, when averaged over a whole cross section thereof, a line width ?b corresponding to plural lateral laser modes, and wherein ?m<?lat<?b, and wherein an optical delay apparatus disposed in the beam provides an optical path difference ?l, wherein 0.8 · ? 0 2 ( 2 · ? ? ? ? l ) < ? ? ? l < 1.8 · ? 0 2 ( 2 · ? ? ? ? l ) , wherein ?0 is an average wavelength of the light of the first beam of laser light, and ??lat represents the second line width.

Abstract: A lens drive device may include a fixed body, a movable body having a lens, a magnetic drive mechanism for magnetically driving the movable body in a lens optical axis direction, and a spring member which connects the movable body with the fixed body. The fixed body may include a base disposed on an imaging element side, a shield member which is formed in a cover shape and which is provided with a side plate part whose imaging element side end part is abutted with an object side face of the base, and a ground terminal which is a different member from the shield member and connected with the shield member. An imaging element side face of the ground terminal is supported by a ground terminal support part formed on the object side face of the base and a gap space is formed between the object side face of the ground terminal and an end part of the side plate part of the shield member.

Abstract: Device facilitating quick and easy removal of a lens from a front side. The device includes a lens, a housing, a retention clip, an ejection block, and a fastener. The fastener passes through a hole in the housing and the ejection block. The fastener and either the housing or the ejection block have compatible threading. Rotation of the fastener in one direction causes the ejection block to release the retention clip, thereby allowing the lens to be removed. Rotation in a second direction causes the ejection block to return to a position capable of receiving the retention clip.

Abstract: A camera module includes a zoom lens group, a focus lens group, a barrel, an actuator group comprising a first actuator and a second actuator. The first and second actuators are received in the barrel, and respectively receive the zoom lens group and the focus lens group therein. The first lens group is driven by the first actuator to move along the axis thereof. The second lens group is driven by the second actuator to move along the axis thereof.

Abstract: A head-up display system is described. The head-up display system includes an image projection device, a diffusion unit, and a frame demonstration medium. The image projection device emits the visible light, containing text or image information, for generating a real image on the diffusion unit. The frame demonstration medium receives the visible light reflected from the diffusion unit. By adjusting the received visible light reflected from the diffusion unit, the frame demonstration medium generates a virtual image corresponding to the real image. The distance between the real image corresponding to the diffusion unit and the frame demonstration medium is preferably equal to the distance between the virtual image and the frame demonstration medium. Alternatively, the visible light is projected to the frame demonstration medium and then reflected to the diffusion unit.

Abstract: A scanning type image display apparatus is disclosed which is capable of forming an exit pupil with a shape and a size which facilitate observation. The apparatus includes a scanning unit, a first optical system introducing a light flux to the scanning unit, a second optical system converging the light flux from the scanning unit, a diffractive optical element receiving the converged light flux, and an ocular optical system. Two directions in diametral directions of the light flux are first and second directions. The optical element increases the divergent angles of an emerging light flux therefrom in the first and second directions as compared with the convergent angles of an incident light flux thereinto in the two directions and increases the divergent angle of the emerging light flux in the first direction as compared with the divergent angle thereof in the second direction.

Abstract: There is provided an optical element module comprising a first optical element and an optical element holder. The first optical element has a first coefficient of thermal expansion. The optical element holder holds the first optical element and has a second coefficient of thermal expansion, the second coefficient of thermal expansion being adapted to the first coefficient of thermal expansion. The optical element is directly contacting the optical element holder in a wide contact area. The contact area is defined by a first contact surface of the first optical element and a second contact surface of the optical element holder, wherein the second contact surface matches the first contact surface. Thus, favorable rigidity and deformation behavior is provided.

Abstract: A combiner positioning system (300) for a heads-up display (100). The positioning system (300) is arranged on a frame (302) including a base plate (334). A movable carrier (306) is provided for supporting a combiner (106) within the frame. The carrier (306) is movable between a first end of the frame, where the combiner (106) is in a retracted position (storage position), to a second end where the combiner is in a fully extended position (display position).

Abstract: A lens drive apparatus includes a base, a lens frame, a nut movable with the lens frame while being threadably engaged with a lead screw, a main guide shaft for guiding the lens frame along an optical axis, an auxiliary guide shaft for guiding the lens frame along the optical axis while inhibiting the lens frame from rotating, and a cover, arranged so as to oppose the base for mating with and securing the main guide shaft and auxiliary guide shaft. The lens frame has a lens holding part projecting out of the base and cover. The base and cover have a first positioning pin and a first positioning hole, which are provided near the main guide shaft, and a second positioning pin and a second positioning hole, which are provided at a position distanced from the main guide shaft. The foregoing can yield a lens drive apparatus having high optical performances, which can be assembled with a high precision.

Abstract: The addition of DMD illumination modulator(s) 702 in series with projection SLM(s) 706/709 to produce high-performance projection displays with improved optical efficiency, reliability, and lower maintenance requirements. This approach eliminates the vibration, audible noise, and safety problems associated with high speed rotating color filter wheels 203 commonly used in SLM projectors and controls the light applied to individual areas of the projection SLM(s).

Abstract: Long-distance transfer of a super-resolution near field can be performed with a wavelength condition of high degree of freedom. Not only an image in same size can be merely transferred, but also a magnified image can be transferred. Thus the processing technique of a near-field image is improved. Small rods are erected at predetermined spacing with one another on a two-dimensional plane. At least the exterior surface of each small rod is made of a predetermined material having a dielectric constant ?m meeting the condition “?m???d” where ?d is the dielectric constant of the surrounding medium. The axes of the small rods can be extended to a predetermined direction with respect to the two-dimensional plane. An optical near-field is incidented to one end of each small rod.

Abstract: A lens barrel includes an imaging optical system having front and rear optical elements with a spring installed therebetween; a reference barrel which includes a forward-facing limit surface and a rearward-facing limit surface; a first position control mechanism which includes a first rotational member and a first limit member, and varies a position of the front optical element in the optical axis direction relative to the reference barrel; and a second position control mechanism which includes a second rotational member and a second limit member, and varies a position of the rear optical element in the optical axis direction relative to the reference barrel. The first limit member is brought into contact with the rearward-facing limit surface by a forward biasing force of the spring while the second limit member is brought into contact with the forward-facing limit surface by a rearward biasing force of the spring.