Abstract: A mirror assembly including an active lens and a reflective surface. The mirror assembly may change its refractive index when a voltage is applied to the active lens, thereby changing the field of view in the lens. Exemplary applications include a blind spot system in a motor vehicle, in which, upon sensing another vehicle in a driver's blind spot, the mirror assembly changes the driver's field of view to include the blind spot. Additional applications include a magnifying mirror for shaving or applying cosmetics.

Abstract: A precision surface formed of a thin stretchable membrane. The shape and curvature of the formed surface are determined by the boundary over which the membrane is stretched, a forming pressure (if applicable), and the membrane's mechanical properties. The surface has the property that it can concentrate electromagnetic radiation and, if appropriate materials for the membrane and boundary are chosen, the resulting system can have very low mass with diffraction limited optical performance. The surface may be incorporated into a telescope or imaging system wherein the system consists of a large primary optical element and subsequent corrective optical elements.

Abstract: A solar lighting apparatus includes a transparent dome. The transparent dome is provided, at its ceiling center, with a control box accommodating a stepping motor, a controller for controlling the motor and a secondary battery. The stepping motor has a motor shaft coupled with a rotary shaft. On the rotary shaft is coupled a support frame member through a universal joint. The rotary shaft is driven by the motor to turn a reflection mirror held on the support frame member over a predetermined angle while tracking the sun.

Abstract: A receiving layer of a radiant energy concentrator has a set of collecting members arranged on a same level. In one embodiment upper edges of the members form a hexagonal honeycomb structure in a plane, and in another embodiment the members form an orthogonal matrix of square shaped elements. In the hexagonal honeycomb structure the collecting members are made in the form of funnels with reflective internal surfaces, and in the orthogonal matrix the collecting members are optical lenses or made in the form of paraboloidal-hyperboloidal concentrators. Layers having reflectors are provided under the receiving layer. Light beams from peripheral collecting members are transmitted by reflectors disposed under the receiving layer to a center of a central member. Successive layers further concentrate receiving light beams in a similar manner.

Abstract: The present disclosure relates to an optical cavity, comprising a first non-concave reflector positioned at a first end of the optical cavity and a second non-concave reflector positioned at a second end of the optical cavity that receives and reflects light reflected from the first non-concave reflector. The first non-concave reflector is configured to focus light that reflects off of the reflector back upon itself to avoid diffraction losses from the optical cavity. In one embodiment of the invention, the first non-concave reflector includes a layer of material that has a thickness that vanes as a function of radial distance out from an axial center of the layer. In another embodiment of the invention, the first non-concave reflector includes a layer of material that has an index of refraction that varies as a function of radial distance out from an axial center of the layer.

Abstract: In the lens embodiment, the invention described herein incorporates a first fluid with a first refractive index in a first series of concentric zones and a second fluid with a second refractive index in a second series of concentric zones. The two zones being adjacent to one another alternating between a concentric circle of the first then a concentric circle of the second then the first and etc. Wherein each circular zone in the series of first and second fluid zones are separated by a transparent barrier with elasticity. Additionally, fluid can be added or subtracted to each concentric circle as desired through ports in their otherwise sealed chambers. The structure and process described produces a refractive and/or diffractive optical component which is predictably and reliably variable as to its focal length and transmittance direction.

Abstract: A solar lighting apparatus includes a transparent dome. The transparent dome is provided, at its ceiling center, with a control box accommodating a stepping motor, a controller for controlling the motor and a secondary battery. The stepping motor has a motor shaft coupled with a rotary shaft. On the rotary shaft is coupled a support frame member through a universal joint. The rotary shaft is driven by the motor to turn a reflection mirror held on the support frame member over a predetermined angle while tracking the sun.

Abstract: An improved mirror assembly comprises a combination of mirrors at the front corners of the vehicle along with a pair of side mirrors and a mirror at the back of the vehicle. The mirrors are so positioned to eliminate any blind spots along the boundaries of the vehicle while enhancing the lines of sight therealong, particularly for objects along the front and rear of the vehicle. The mirrors associated with these latter zones are positioned so as to be adjacent the driver to preclude obstruction by packages stacked in the vehicle.

Abstract: A rear view mirror (1) for a motor vehicle is disclosed having a mirror element, in the mirror surface of which the driver may observe the traffic behind the driver. In order variably to be able to vary the reflection detail shown in the rear view mirror (1), the mirror element (2) is composed of a plurality of component mirrors (3). These component mirrors (3) are arranged so as to be pivotally mounted on a base plate (5) and the angle of reflection of each component mirror (3) may be adjusted through control of at least one associated drive unit (6).

Abstract: A parabolic reflector assembly (10) comprising a base member (11) formed of magnetic material and defining a parabolic surface (12), and a flexible magnet sheet (18) carrying a reflective sheet (19) magnetically bonded to the parabolic surface to form a parabolic reflecting surface. A method of manufacturing the parabolic reflector assembly is also disclosed. The parabolic reflect or assembly typically may be used as a concentrator is solar energy concentrating apparatus.

Abstract: A major cause of road accidents is the well-known blind spot present within the field of view of side-view mirrors of automobiles, in particular of the left. Innovations have been made in the past and recently in designing mirrors that avoid the blind spot, and have been patented. They have some inadequacies however. This invention is based on observation of the distinct roles played by different sections of a side-view mirror. The lower section of the mirror alone accounts for view of the road region close to the auto, wherein the blind spot is located. The invention therefore presents now a modified lower section that makes viewing the blind spot region possible without introducing a curved configuration.

Abstract: A panoptic camera system that can be used to capture all the light from a hemisphere viewing angle is disclosed. The panoptic camera comprises a main reflecting mirror that reflects light from an entire hemisphere onto an image capture mechanism. The main reflecting mirror consists of a paraboloid shape with a dimple on an apex. The surface area around the dimple allows the main reflector to capture light from behind an image capture mechanism or a second reflector. When two panoptic camera systems that capture the light from an entire hemisphere are placed back to back, a camera system that “sees” light from all directions is created. A stereo vision panoramic camera system is also disclosed. The stereo vision panoramic camera system comprises two panoramic camera systems that are separated by a known distance. The two panoramic camera systems are each placed in a “blind spot” of the other panoramic camera system.

Abstract: A faceted reflector assembly including a plurality of reflector segments which are preferably, but not necessarily, comprised of pre-anodized and enhanced aluminum having a specular, semi-specular or a diffuse finish. The reflector segments include interlocking means such as tabs and slots for attachment to other reflector segments. The reflector segments, when interlocked, form the faceted reflector of the present invention.

Abstract: The invention relates to a reflector having reflection surface with facets for reflecting light beams and for generating a light field with a hollow basic element which presents a first end for accommodating an illuminant (mounting end), as well as a second end which represents a light outlet aperture, whereby for generating a specific light field contour with a given form of illuminant the forms of individual facets and their position relative to the optical axis of the reflector are selected specifically.

Abstract: The present invention is a display apparatus that provides protection against damage for a metallic layer. The display apparatus includes a light modulating layer, a polarizer, and a light directing film. The light directing film includes a prismatic structure having two sides, where one side includes saw tooth formations having tilted surfaces and a metal layer on the side of the prismatic substrate having the saw-tooth formations. A tilt angle of the tilted surfaces offsets an optimal viewing angle for the display from a glare angle for the display. In a first embodiment of the invention, the light directing film of the display apparatus further includes an inorganic protective layer formed on the metal layer, wherein the inorganic protective layer inhibits molecular transfer to the metal layer and balances the color of reflected and transmitted light. The light directing film further includes a pressure sensitive adhesive layer between a polarizer and the inorganic protective layer.

Abstract: A safety mirror lens assembly includes a mirror unit with a mirror lens that has a three-dimensional convex/ellipsoid reflective surface which terminates in an oval shape peripheral edge. The reflective surface is such that a notional line traced to coincides with the major axis has a first constant radius of curvature and a second notional line traced to coincide with the minor axis has a second constant radius of curvature. The first radius of curvature is substantially greater than the second radius of curvature. The mirror lens is usable for a cross-over mirror for a vehicle, for example, a school bus.

Abstract: A matrix solar dish concentrator with flexed glass mirrors is patterned from orthogonal planes parallel to the axis of symmetry of a paraboloid and intersecting the paraboloid, this pattern making all parabolic trusses uniform. Parabolic trusses are made by flexing linear truss members with lateral forces creating accurate parabolic member curves, restraining the flexed members with rigid webbing to form an orthogonal paraboloid frame. Parabolic glass mirrors are made by flexing slender flat glass mirrors with lateral forces creating accurate parabolic mirror curves, restraining the flexed mirrors with tension buttons connected to the orthogonal paraboloid frame to form a solar dish. Glass mirror structural substrates are not used. The solar dish tracks the solar azimuth with a bicycle wheel and tracks the solar zenith with a television satellite dish actuator. A solar receiver is supported with a low shade structure outside a cone of concentrated sunlight.

Abstract: The present invention is a display apparatus that provides protection against damage for a metallic layer. The display apparatus includes a light modulating layer, a polarizer, and a light directing film. The light directing film includes a prismatic structure having two sides, where one side includes saw tooth formations having tilted surfaces and a metal layer on the side of the prismatic substrate having the saw-tooth formations. A tilt angle of the tilted surfaces offsets an optimal viewing angle for the display from a glare angle for the display. In a first embodiment of the invention, the light directing film of the display apparatus further includes an inorganic protective layer formed on the metal layer, wherein the inorganic protective layer inhibits molecular transfer to the metal layer and balances the color of reflected and transmitted light. The light directing film further includes a pressure sensitive adhesive layer between a polarizer and the inorganic protective layer.

Abstract: An azimuth sensor unit 15 and an altitude sensor unit 16 have pairs of optical sensors 18 and 20, respectively, disposed along their respective directions, which pair of optical sensors are disposed toward the sun in the form of a tapered section narrower to the front end and broader to the rear end with their light-receiving surfaces outward, and the azimuth sensor unit and the altitude sensor unit themselves rotate so as to balance light-receiving amounts of their respective pairs of optical sensors and send signals for rotating a concave mirror 10 in the same directions by half the amounts of the rotations of the azimuth sensor unit and the altitude sensor unit to a drive mechanism.

Abstract: According to the proposed invention, this technical result is achieved so that many-facet concentrator of a solar setup for exposure of objects, placed in a target plane, to the action of solar radiation containing a supporting frame and facets differing by that the facets of the concentrator are chosen with spherical focusing reflective surfaces of equal focal lengths and with selective coatings reflecting a desired spectral fraction of solar radiation, and are arranged on the supporting frame symmetrically with respect to the common axis of the concentrator, their optical axes being directed to the single point on the optical axis of the concentrator located before the nominal focus point of the concentrator and determining the position of arranging the target plane.

Abstract: A photolithography system that employs a condenser that includes a series of aspheric mirrors on one side of a small, incoherent source of radiation producing a series of beams is provided. Each aspheric mirror images the quasi point source into a curved line segment. A relatively small arc of the ring image is needed by the camera; all of the beams are so manipulated that they all fall onto this same arc needed by the camera. Also, all of the beams are aimed through the camera's virtual entrance pupil. The condenser includes a correcting mirror for reshaping a beam segment which improves the overall system efficiency. The condenser efficiently fills the larger radius ringfield created by today's advanced camera designs. The system further includes (i) means for adjusting the intensity profile at the camera's entrance pupil or (ii) means for partially shielding the illumination imaging onto the mask or wafer.

Abstract: A method of fabricating glass or other transparent material second surface reflectors for solar energy concentrating systems, with attachment devices affixed to the back of the mirror. The attachment devices are used to attach the reflector to a supporting frame. The silver or other reflecting material that the forms the reflecting surface is removed in a small area so the attachment device can be affixed directly to the glass or other transparent material rather than to one or more layers of reflecting materials and protective coatings. The reflecting surface of a glass mirror is usually protected by one or more layers of protective coating. This results in one or more interfaces between the glass and the adhesive used to affix the attaching device. Each interface can present an area for inconsistent bonding. Removing the reflecting surface and protective coatings thus provides for a stronger bond than might be achieved by attaching the attachment device to the protective coatings.

Abstract: Condenser system for use with a ringfield camera in projection lithography where the condenser includes a series of segments of a parent aspheric mirror having one foci at a quasi-point source of radiation and the other foci at the radius of a ringfield have all but one or all of their beams translated and rotated by sets of mirrors such that all of the beams pass through the real entrance pupil of a ringfield camera about one of the beams and fall onto the ringfield radius as a coincident image as an arc of the ringfield. The condenser has a set of correcting mirrors with one of the correcting mirrors of each set, or a mirror that is common to said sets of mirrors, from which the radiation emanates, is a concave mirror that is positioned to shape a beam segment having a chord angle of about 25 to 85 degrees into a second beam segment having a chord angle of about 0 to 60 degrees.

Abstract: A method of reversing a laser beam in a machine includes orienting a pair of reflective surfaces at an angle of approximately 90° relative to each other. The laser beam is directed in a first direction such that the laser beam sequentially impinges upon a first of the reflective surfaces reflects off of the first reflective surface, impinges upon a second of the reflective surfaces, and reflects off of the second reflective surface in a second direction substantially parallel to and opposite the first direction. A pivot axis is substantially parallel to each of the reflective surfaces. Each of the reflective surfaces is pivoted about the pivot axis by a substantially equal angle to thereby change a position of the laser beam after reflecting off of the second reflective surface.

Abstract: An illumination source or condenser used to project the image of a reticle onto a photosensitive substrate used in photolithography having a first reflective fly's eye, faceted mirror, or mirror array with predeterminedly positioned facets or elements and a second reflective fly's eye, faceted mirror, or mirror array having predeterminedly positioned facets or elements for creating a desired radiant intensity, pupil fill, or angular distribution. A source of extreme ultraviolet electromagnetic radiation is provided to a first fly's eye or mirror array with arcuate shaped facets or elements. The arcuate shaped facets or elements are positioned to create an image of the source at corresponding facet in a second reflective fly's eye or mirror array. A desired shape and irradiance together with a desired radiant intensity, pupil fill, or angular distribution is obtained. An arcuate illumination field or image is formed with high efficiency in a compact package.

Abstract: A confocal microscope apparatus includes a disk scanner for scanning a specimen with a laser beam, and camera main body for photographing a still image. An exposure time calculation circuit is arranged to generates an exposure time signal for the camera main body. A rotation sensor, a scan track start point/end point determination circuit, and a rotation period calculation circuit are arranged to generate a rotational period signal for the disk scanner. A comparator compares the exposure time signal with the rotational period signal, so that a motor controller and a motor driver control rotation of a motor of the disk scanner by a comparison output from the comparator.

Abstract: An array of concentrators of electromagnetic radiation (i.e., visible light, radio waves, etc.) employing one or more concentrating devices. Each concentrating device includes: a concentrator system for concentrating the incident electromagnetic radiation impinging thereon; a collimator system disposed in the path of electromagnetic radiation from the concentrator system for producing a beam of electromagnetic radiation; and a redirecting system. Each concentrating device has one or more of its elements staggered such that the beams from the array of concentrating devices result in a stacked or bundled plurality of beams. This bundle of beams is then concentrated again, recollimated and redirected to join with other similarly concentrated beams. This arraying can be repeated again and again, producing stronger and stronger beams or electromagnetic radiation, if desired.

Abstract: An electromagnetic reflector which is effective for electromagnetic waves in a range from 50 to 100 GHz, radiated from an on-board radar device, is integrally incorporated with an optical reflector for effectively receiving the electromagnetic waves by the reflector and, as reflected thereby, by the radar device even though the relative angle for receiving reflected radar waves becomes larger due to a shift of lanes by the preceding vehicle or due to a curve in the road.

Abstract: A nearly spherical view is provided using five cameras. Four cameras provide a 360 degree view of an area using a four sided pyramid shaped element. The four sides of the pyramid shaped element are reflective and reflect images from four different directions. Each camera is positioned to receive a reflected image from one of the reflective sides of the pyramid. The four cameras are arranged so that they share a common virtual optical center. A fifth camera with a wide angle lens is positioned with the camera's optical center positioned at the common virtual optical center. The fifth camera has a view in the direction of the pyramid's base to provide a nearly spherical view when combined with the 360 degree view of the other cameras.

Abstract: An irradiance redistribution guide (IRG) for providing from a radiation source having a nonuniform irradiation distribution, a predetermined irradiance distribution over a predetermined target area spaced away from the IRG, includes a tubular reflective inner surface disposed between an entrance aperture and an exit aperture. The reflective inner surface has a varying cross-sectional radius. The profile of the cross-sectional radius is defined by a spline function that is uniquely determined by a plurality of knots. The IRG, when used in conjunction with a high-power solar concentrator, is advantageous in materials processing that requires high irradiance level that is uniformly distributed over an area spaced away from the exit aperture by a working distance.

Abstract: An all-reflective field-switching optical imaging system includes an optical beam coincident with an optical axis and forming a nominal pupil, a pupil-reimaging mirror array spatially separated from the optical axis and having an incident beam with a first pupil the same size as the nominal pupil and an output beam with a second pupil, and a beam diverter mirror array controllably movable between a first position where the beam diverter mirror array does not intercept the optical axis and does not divert the optical beam, and a second position where the beam diverter mirror array intercepts the optical axis and diverts the optical beam.

Abstract: The disclosure is related to a mirror device for use particularly as a side view mirror for automobiles. Side view mirrors presently in common use comprise of plane mirrors, and are required to be of a limited size. Because of the required small size, the directional range of view such mirrors provide to the driver is quite limited, and leave out of view certain directional ranges which are important from the safety point of view. It is the purpose of this invention to enhance the directional range of view to include within the view of the driver the region on the side commonly known as the blind spot. The device of the invention makes this possible without increasing the size of the mirror, or without causing significant disadvantages. This is made possible by providing a zig-zag surface for the mirror at appropriate offset angle, so that two separate ranges of directional view which are contiguous without overlap are achieved.

Abstract: A rear view safety mirror includes two single-planed mirrors mounted at an angle to one another. In the preferred embodiment, the inside mirror is mounted at a steeper pitch than the outside mirror. Preferably, the mirrors are mounted in pockets or slots in a one piece molded plastic housing, wherein the pockets or slots are configured to have the angle. The plastic housing is mounted to the vehicle in a conventional manner, thereby providing the vehicle's operator with familiar adjustment control.

Abstract: A beam profiler comprising: an intensity modifier constructed and arranged to separately modify the intensity profile of different subbeam portions of an initial beam to thereby create respective subbeams each having a respective predetermined modification; and a subbeam-directing optical system constructed and arranged to direct the multiple subbeams along respective subbeam beam paths that substantially overlap in an overlap plane, whereby, a resulting beam of radiation is created at the overlap plane that has an intensity profile equal to the optical incoherent summation of the predetermined intensity profiles of said overlapping subbeams. The intensity modifier preferably comprises an array of intensity-modifying profiling elements disposed across the initial beam each producing a corresponding subbeam.

Abstract: A reflector for focusing sunlight upon a single location. The reflector is preferably positioned in orbit about a celestial body to focus sunlight on objects such as space debris to heat up and vaporize such debris. The reflector includes a plurality of units in an array, with each of the units including a plurality of subunits. Each of the units rotates about a first axis and each of the subunits is tiltable about a second axis which is perpendicular to the second axis. A reflecting surface is mounted on each of the subunits such that the reflecting surface rotates with its respective unit and tilts with its respective subunit. Such rotation and tilting permits sunlight to be directed theoretically anywhere on one side of a plane. Each of the units and each of the subunits is independently controllable, and this permits each of the units directs sunlight to a single location onto a single object, which then heats up rapidly to a relatively great temperature until it vaporizes under the intense heat.

Abstract: A new side rear view mirror device for providing lighting thereon for aiding the visibility of the driver and others. The inventive device includes a housing with a cover lens covering a front opening in the housing. The cover lens has an upper lens and a lower lens. The upper lens of the cover lens is generally transparent while the lower lens of the cover lens has a translucent colored front region and a generally transparent bottom region. A reflector member is provided in the interior of the housing and has upper and lower reflector portions. Upper and lower light sources are also provided in the interior of the housing. The upper light source is mounted to the upper reflector portion while the lower light source is mounted to the lower reflector portion.

Abstract: A solar insolation concentrator fabricated from a rigid lightweight (slab-like substrate and a plurality of reflectors. Inclined surfaces are formed in the face surface of the substrate, such as by impressing a heated plate portion of a fabrication tool into the substrate material. The fabrication tool is then used to position the reflectors as they are adhered to the inclined surfaces to assure that the reflectors are aligned with respect to a common focal point. An embodiment of the solar insolation concentrator comprising a plurality of identical square flat back-silvered glass mirrors mounted within recesses within a block of high density cellular polystyrene and a tool and process used to fabricate this concentrator are disclosed. The solar insolation concentrator is also suited for use as a reflector of electromagnetic radiation having wavelengths outside the solar energy spectrum.

Abstract: A reflector assembly is provided for efficiently collecting and forming the electromagnetic radiation from a radiation source into a desired beam pattern. The reflector assembly uses a smaller non-symmetrical generally convex reflector and a larger non-symmetrical generally concave reflector. The generally convex reflector intercepts a large fraction of light emitted by the source that would otherwise escape without interacting with the assembly and redirects this light onto the generally concave reflector for eventual inclusion in the beam.

Abstract: A comb mirror for improving health of a human body is disclosed. A plurality of far infrared ray lamps are installed in the inner space of the comb mirror body, By a first switch within the body, the first switch will control the on and off states of the far infrared ray lamps. A protecting web is installed in front of the inner space for isolating the far infrared ray lamps for providing the user to contact the far infrared rays lamps. Each of two sides of the body is installed with a respect mirror door which may rotate with the body. Each outer surface of the mirror door is installed with a plan mirror. The inner surface of the mirror seat is installed with concave mirror. By opening the mirror door, far infrared ray will be emitted. The concave mirror serves to focus the far infrared ray to the human body.

Abstract: An optical device includes a block of optical material. The block includes a first and second end face, and a portion of the first end face includes at least one convex arcuate portion.

Abstract: A backlight luminaire (50) is provided with at least two tubular fluorescent lamps (44, 45), with portions of the lamps (44, 45) exhibiting a variation in spectral characteristic in the longitudinal direction. The portions of the lamps are so positioned relative to each other that the spectral characteristic of a portion of a first lamp (44) and the spectral characteristic of a portion of a second lamp (45), which portions are arranged one beside the other, vary in opposite directions. The luminaire is further provided with a plurality of sub-reflectors (42, 43), the majority of the sub-reflectors (43) being provided with said portion of the first lamp (44) and said portion of the second lamp (45). Preferably, the majority of the lamps (44, 45) is distributed over more than one sub-reflector (43). Preferably, the lamps (44, 45) are U-shaped and alternately connected in series.

Abstract: A backlight luminaire (50) comprising a plurality of fluorescent lamps (44, 45) and a plurality of sub-reflectors (42, 43) is characterized in that the majority of the sub-reflectors (43) are provided with a portion of more than one lamp. In addition, the majority of the lamps (44, 45) are distributed over more than one sub-reflector (43). The lamps (44, 45) are preferably U-shaped and alternately connected in series. The backlight luminaire (50) is employed in liquid-crystal display devices (51) to attain a uniform light distribution.

Abstract: A reflector has a plurality of convex/concave portions on a surface of a substrate, Each of the convex/concave portions has a circular or elliptical shape as viewed in a direction perpendicular to the surface of the substrate. The surface of the substrate includes first and second regions adjacent to each other defining a boundary therebetween. In each of the first and second regions, an ellipticity .alpha. of the shape of the convex/concave portions continuously changes away from a respective predetermined central position. The ellipticity .alpha. is about 1.05+(0.005/3)-.beta. or less, where .beta.=.vertline..theta.-90.vertline., and .theta. denotes an angle between long axes of the elliptical shapes of the convex/concave portions on opposite sides of the boundary.

Abstract: A fundamental surface for a reflection surface of a reflection mirror of a vehicle lamp is formed in a manner such that a curved surface where an insertion hole, through which a light source is inserted into the reflection mirror in the direction oblique to the optical axis of the reflection mirror, is to be formed, is made smoothly continuous to the remaining curved surface without any level-difference. A group consisting of a number of paraboloids of revolution with different focal distances are put on the fundamental surface, and a group of closed curves formed as intersecting lines of the fundamental surface and the group of paraboloids of revolution are determined. A number of reflection steps in the form of loop are formed on the reflection surface. The reflection steps between the adjacent ones of the closed curves are defined by portions of the paraboloid of revolution between the adjacent ones.

Abstract: An optical device including a reflecting device, a focusing device and a processing device for realizing image data of a target object is disclosed. The focusing device is located within an enclosed area surrounded by a reflective light track so that the two light paths respectively from the target object to the focusing device through the reflecting device, and from the focusing device to the processing device are overlapped. By this way, the size of the optical device contributed by the distance between the reflective device and the processing device is reduced.

Abstract: In a reflector for a display to be placed on the back surface of a reflection-type display, the section of the reflector is made serrated so that the shape of the serration will be an isosceles or scalene triangle, and, at the same time, the serrated reflecting surface is finely roughened. The roughness of the finely roughened reflecting surface is so controlled that the center line average height Ra will be 1 micrometer or more and 6 micrometers or less and that the ten-point average height Rz will be 1 micrometer or more and 10 micrometers or less. By this, images displayed on a display into which the reflector is incorporated can be observed without being obstructed by surface-reflected light, and also brightly observed in a wide angle.

Abstract: A reflective optical system includes, in traveling order of light, a correction plate having an aspherical surface and a reflecting mirror for concentrating the light. An image is formed out of an optical path between the correction plate and the reflecting mirror.

Abstract: The present invention is an improved reflector for use in a compact fluorescent lamp (CFL) luminaire and a luminaire incorporating such a reflector. The present invention achieves significantly improved light output from a CFL by employing a reflector of expanded polytetrafluoroethylene. Not only is light output improved over presently employed CFL luminaire reflectors, providing more light and/or allowing for less energy usage, but the luminaire of the present invention also produces a more pleasing light output.

Abstract: A deflection mirror tower (DMT) of a multiple-disk array, optical storage system includes a plurality of prism members, each having an angular mirror surface, arranged along a vertical axis of the DMT and configured at a predetermined angular orientation to deflect a laser beam to a respective disk surface. The DMT is generally fabricated using a two-level partitioning process. Several prepared glass substrates, i.e., one for each mirror type, are initially sliced into bars having predetermined geometries. A bar from each substrate is sequentially aligned to a master reference and bonded to adjacent bars to form an intermediate bar stack. The stack is then segmented into a plurality of DMT components, each having a plurality of prism members.

Abstract: A reflector assembly is provided for efficiently collecting and forming the electromagnetic radiation from a radiation source into a desired beam pattern. The reflector assembly uses a smaller non-symmetrical generally convex reflector and a larger non-symmetrical generally concave reflector. The generally convex reflector intercepts a large fraction of light emitted by the source that would otherwise escape without interacting with the assembly and redirects this light onto the generally concave reflector for eventual inclusion in the beam.