Abstract: Apparatus for generating a dynamic image includes a laser light source for generating a coherent beam of light; optics for separating the light beam into a reference beam and an object beam; a lenslet light modulator, including an array of lenslets and a pixilated light modulator having a plurality of light modulating pixels associated with each lenslet in the array, the lenslet light modulator being located to modulate the object beam; image processing electronics for driving the lenslet light modulator with dynamic image data to produce a dynamic image at a recording plane; and optics for interfering the dynamic image and the reference beam at the recording plane to produce a hologram of the dynamic image in a holographic recording medium located in the recording plane.

Abstract: Systems and methods for providing illumination suitable for imaging devices such as laser projection systems. In one embodiment, a highly collimated (e.g., laser light) beam is passed through a holographic diffuser to create a well defined cone angle for the light emanating from each point on the diffuser. This light is focused into an illumination image that is controlled by the prescription of the diffuser. In one embodiment, the image is a uniformly intense rectangle having a 4:3 aspect ratio to match an imager for a projection display. The diffuser prescription and resulting illumination image can be selected to match any desired imager. The present systems and methods may provide the advantages of high level of light efficiency, reduction or elimination of speckle and “worminess” and reduction or elimination of cosine4 and gaussian intensity falloff, all of which are common in prior art designs.

Abstract: An optical configuration suited to the monitoring of a process flow through the wall of a containment vessel for producing a high-quality, high-NA sample focus and reduced residual positive spherical aberration. The invention includes an optical path with a window extending through, and sealed to, the wall of the containment vessel, and an optical surface disposed in the optical path associated with minimizing aberration, increasing numerical aperture, or both. The window has a surface facing into the process flow and a surface facing away from the process flow and, the surface facing away from the process flow is associated with minimizing aberration or increasing numerical aperture. A lens is disposed outside the containment vessel and in the optical path, with the surface of the window facing the lens being substantially spherical. With such an arrangement, the light rays of the optical path are generally normal to the surface of the window facing the lens.

Abstract: A color wheel including a color filter, a motor, and a fixing element. The motor has a housing and a motor body, and the housing is set to a side of a central axis of the motor body. The color filter is set on the housing of the motor. The motor body is fixed on the fixing element. A holder is formed on the fixing element, and the holder outwardly extends from the fixing element. In addition, the invention also provides a color wheel further including an auxiliary fixing element, which is set on the fixing element and has an outwardly extending holder.

Abstract: This invention relates to an optical transmission system which allows high quality transmission of signal light where a plurality of signal channels are multiplexed, and has a configuration that is particularly suitable for CWDM optical transmission. In the optical transmission system, the plurality of signal channels propagating through the optical fiber transmission line are demultiplexed into a signal channel group in the first wavelength band ?1 and a signal channel group in the second wavelength band ?2. Then, each signal channel in the second wavelength band ?2 where the absolute value of chromatic dispersion is large is dispersion-compensated.

Abstract: Two fiber optic cables are spliced together so as to provide a relatively high strength splice without increasing the diameter of the cable and without degrading cable flexibility at the splice. The strength elements from one cable are used to replace the strength elements at the end of the other cable, after the fiber optic cores of the cables have been fused together. The splicing equipment advantageously uses elongated conduits to hold unwound strength elements out of the way to allow the cores to be fused and to prevent unwanted distortion of the cable during rewinding.

Abstract: An aberration compensating optical element includes: a diffractive structure having a plurality of ring-shaped zone steps formed into substantially concentric circles on at least one surface of the aberration compensating optical element; wherein the aberration compensating optical element is adapted for being disposed on an optical path between a light source for emitting a light having a wavelength of not more than 550 nm, and an objective lens made of a material having an Abbe constant of not more than 95.

Abstract: An optical switch including: (a) a light transmissive substrate, and (b) a two-dimensional array, disposed on the light transmissive substrate, the two-dimensional array having rows and columns of reflective shutter assembly elements, each of the reflective shutter assembly elements including: (i) a reflective shutter, and an output diffractive optical element.

Abstract: An optical thin film stack provides reflection of essentially all light except for a selected amount of transmission over a selected wavelength range. Reflecting, rather than absorbing, unwanted light avoids heating caused by light absorption and allows productive use of the non-transmitted light in some applications. In some embodiments, reflector designs are “stacked” on an optical substrate to provide serial optical reflectors. Stacking dichroic filters provides reduced sensitivity to cone angle and manufacturing advantages.

Abstract: A photonic bandgap device includes a first mirror region including alternating layers of different materials. A second mirror region includes alternating layers of different materials. An air gap cavity region is positioned between the first mirror region and second region. The air gap cavity changes its thickness when a voltage is applied so that the device is tuned to a particular resonant wavelength.

Abstract: A holographic recording medium exhibiting a high recording sensitivity without execution of reduction treatment. A system records information on the holographic recording medium by using a gating light within a wavelength band causing less optical damage to the holographic recording medium. The holographic recording medium includes a single crystal of lithium niobate (LiNbO3) or lithium tantalate (LiTaO3) containing Mn as a dopant.

Abstract: An indicator panel for a vehicle instrument panel is provided with a base substrate having transparency, an ink-acceptance layer coated on at least one surface of the base substrate and a shading layer coated further on the ink-acceptance layer. Hazes of the base substrate and the ink-acceptance layer are more than 92.8% and less than 93.5%.

Abstract: Angle of incidence of reproducing light with respect to a hologram or a holographic stereogram is adjusted so that a reproduced image can be repetitively viewed without requiring the viewer to move his or her viewpoint. The components of the image reproducing apparatus can be roughly classified into a power supply unit equipped with a power supply for generating a driving power and various types of electric circuits, a light source unit equipped with light emitting diodes and the like, a supporting unit for supporting the light source unit, and a holographic stereogram display unit for holding the holographic stereogram and displaying an image. In this image reproducing apparatus, the light source unit is swingably or turnably moved repetitively with respect to the holographic stereogram so that the reproducing light has angle of incidence changed on the holographic stereogram, thus allowing change of viewed image.

Abstract: Provided is an optical multilayer structure having a simpler configuration, flexibility in selection of materials and improved reliability in wiring and capable of high-speed response even in a visible light range. A optical multilayer structure (1) has a first layer (11) being light-absorptive and making contact with a substrate (10), a gap portion (12) having as large a size as light interference phenomenon can occur and being capable of varying the size, and a second layer (13) being transparent in this order on the substrate (10). Where a complex refractive index of the first layer (11) is N1 (=n1?i·k1, n1 is a refractive index, k1 is an extinction coefficient, and i is an imaginary unit), a refractive index of the second layer (13) is n2, and a refractive index of an incident medium is 1.0, the optical multilayer structure (1) is configured so as to satisfy the following formula. ( n 1 - n 2 2 + 1 2 ) 2 + k 1 2 - ( n 2 2 - 1 2 ) 2 = 0.

Abstract: An optical device 1 has a substrate 2, whereas bare fibers 5 exposed from a coated optical fiber tape 3 by removing a coating 4 from its middle part are secured to the upper face part of the substrate 2. In the substrate 2, a transverse groove 8 is formed obliquely with respect to an axis of the bare fibers 5 so as to traverse core parts 5a of the bare fibers. An optical member 9 for reflecting a part of signal light transmitted through the bare fibers 5 is inserted in the transverse groove 8. A support member 10 is provided on the upper side of the bare fibers 5, whereas a support surface 10a of the support member 10 is provided with photodetectors 11 for detecting light reflected by the optical member 9. The support surface 10a of the support member 10 is inclined with respect to the upper face of the substrate 2, whereby the light entrance surface 13 of each photodetector 11 is inclined by a predetermined angle with respect to the upper face of the substrate 2.

Abstract: A technique for processing optical input signals to produce optical output signals using only a single hologram for a plurality of circularly shifted code words used to encode the input signals. A spatial light modulator coupled to the each of the optical input signals encodes a corresponding one of the input optical signals, and the optical signals are linear combined for further processing. A matched filter composed of the single hologram receives the linear combination, and a two-dimensional microlens arrangement coupled to the matched filter emits each of the optical output signals from a corresponding microlens in the arrangement. Switching is engendered by controlling each spatial light modulator to thereby direct each input signal to the desired one of the microlens in the arrangement.

Abstract: The interior surfaces of the holes in holey optical fibers has adsorbed optically material which may be detected by propagating laser light down the axis of the fiber and detecting Raman, Infrared, or visible fluorescence or absorption.

Abstract: The present invention relates to a heat filter and a process for manufacturing this filter. This heat filter may for example be used to filter surgical or examination lighting composed of a light source which emits energy, or radiation, in the visible and infrared ranges. It allows the light emitted by this source to be filtered so as to prevent infrared radiation from hindering the surgical team or the patient. It includes a substrate, at least one layer of an infrared reflecting material, and a coating forming an interference filter in the visible range. The invention process includes the deposition on a substrate of a layer of an infrared reflecting material and the deposition on this layer of an interference filter in the visible range.

Abstract: Described are multilayer optical composites including a first layer having an index of refraction n1, an ith layer having an index of refraction ni greater than n1, and one or two or more intermediate layers between the first layer and the ith layer, wherein the indices of refraction of the intermediate layers are between n1 and ni, and the index of refraction of each intermediate layer increases in the order of position of each layer from the first layer.

Abstract: An ND filter includes a substrate formed in a plastic sheet and a deposit film deposited on a surface of the substrate. The plastic sheet is composed of a norbornene resin and the deposit film is composed of a nickel-chromium alloy. The norbornene resin has a small thermal shrinkage factor and prevents the plastic sheet from wrinkling. The nickel-chromium alloy has a good oxidation resistance and ensures a uniform light transmittance of the deposit film over the entire visible light region.