Abstract: An apparatus for making holograms of an object is described. The apparatus has a laser source emitting a collimated or slightly divergent laser beam, and a holder for a holographic plate to hold the holographic plate between said object and said laser source in a position near said object. A positive lens means having its focus is placed between said lens means and said holographic plate such that a divergent laser beam is impinging on said holographic plate and cover an illuminating area on said plate extending well beyond the area of said object in a plane parallel to said holographic plate. A closed housing is placed around said laser source and said lens means, which housing has a controllable shutter to be opened only at control provided in an end wall in a position cutting the beam path of said outgoing laser beam.

Abstract: A holding device for a connector associated with an electrically controlled automotive mirror is provided such that the connector becomes fixed to a mirror unit. With the connector being fixed to the mirror unit, connections between the connector and mated connectors provided in automotive vehicle bodies may be made in a much easier fashion.

Abstract: This invention relates to a method and apparatus for making transmission holograms and, more specifically, using a rotatable drum adapted to receive a beam of actinic radiation on a reflector in the drum reflecting a portion of the beam through a master to a recording medium to form the transmission hologram in the recording medium.

Abstract: A self-contained optical scanning unit for use in a bar code scanner includes a motor driven hollow drive shaft through which is projected a laser light beam from a laser source positioned adjacent one end of the drive shaft. Mounted on the other end of the drive shaft is an optical transceiver which includes a deflecting portion which deflects the laser light beam outwardly towards a ring of mirrors which forms a scanning pattern for scanning a coded indicia and a collection portion which collects the reflected light beams from the coded indicia and directs the light beams at a detecting member. The collection portion of the transceiver is orientated obliquely across the spin axis of the drive shaft while the deflection portion is oriented obliquely to the spin axis and to the face of the collection portion. The detection member is located on the spin axis between the transceiver and the coded indicia.

Abstract: An all-optical polar transform device transforms an image in rectangular rdinates into an image in polar coordinates by reflecting an input image-containing beam from a series of suitably positioned reflective surfaces and finally transmits the beam out as an output beam containing the transformed image.

Abstract: A light beam scanner for scanning a light beam not by using an optical part such as a rotary polygon mirror or a galvanometer but by using a phase-conjugate element (or phase-conjugate mirror) having a non-linear light effect to establish a phase conjugate beam due to four-light wave mixing. The phase-conjugate element constitutes a resonator, when irradiated with and excited by a pumping light beam, together with a reflecting face existing in its vicinity so that laser oscillations are effected inbetween. Between the phase-conjugate element and the reflecting face, there are interposed a plurality of optical gates, some of which are opened to constitute a resonator and to generate the laser oscillations and a conjugate laser beam for recording. Thus, the scanning operation can be accomplished by controlling the optical gates to be opened or closed.

Abstract: A four-channel anomaloscope for detecting the color sense match of the blue cone function and the color weakness or blindness in red and green comprising a housing, optical elements, circuit control means, appropriate computer facilities and software programs wherein the optical elements comprise lighting bulbs, single wavelength interference type filters, 50/50 spectroscopes, a reflective mirror, and photodiodes. The present invention further relates to a method of making the brightnesses of both partitions of the bipartite field produced in the four-channel anomaloscope to coincide with each other.

Abstract: A rear window mounted stoplight assembly for a vehicle including stoplight illuminating apparatus for producing stoplight illumination, and a scatter blocking hologram adjacent the stoplight illuminating apparatus for preventing scattered stoplight illumination from being viewable by the vehicle operator. In a particular embodiment, the stoplight illumination apparatus includes an image volume hologram and a source of playback illumination.

Abstract: Apparatus for the manufacture of integrated circuits using holographic techniques in which a holographic image formed on a first recording medium provided on a glass slab is replayed by being scanned in order to reproduce an image of the holographic image on a second recording medium provided on a silicon slice. The replay source provides a a collimated narrow circular beam or elongated beam which passes normally through a face of the prism, through an index matching liquid located between the prism and the glass slab before being totally internally reflected at the other surface of the glass slab. The collimated replay beam provides control over the effective numerical aperture thus preventing wide angle radiation from degrading the quality of the printed image.

Abstract: A laser optical system is designated to obtain Gaussian beams by correcting phases of laser beams emitted from a laser which oscillates on transverse multimodes. A spectral element is adapted to separate spectroscopically the laser beams in each transverse multimode which are emitted from the laser in such a way that the respective transverse modes for each order appear as their corresponding luminescent points on each of the phase correcting elements. A correction is performed by the phase correcting plate so that the phase between each adjacent luminescent point becomes the same phase, whereby the laser beams are reflected to the spectral element. The laser beams thus phase-corrected are combined into one, thereby obtaining Gaussian beams.

Abstract: An associative memory system is provided which incorporates a spatial light modulator (SLM) and thresholding components. In the preferred embodiment, a Fourier transform hologram is used to convolve a reference beam with correlated input images and stored object images. An iteration and feedback loop is provided which is used to derive an enhanced reference beam for use in matching and enhancing the associative memory of the hologram with the object input plane image. The iteration loop of SLM and optical amplifying components comprises a liquid crystal light valve (LCLV) which receives the correlation plane image and provides that image in the form of a spatially phase-modulated and amplitude modulated signal to a polarizing thresholding analyzer device. The analyzer/polarizer is adjustable and threshold limits the data at fast rates and, is used in the preferred embodiment to threshold the data with reference to the greatest amplitude portion of the correlation spot provided to the LCLV.

Abstract: The present invention relates to a multi-layered back reflecting mirror which comprises a substrate, a dielectric multi-layered film formed on one side of the substrate and a metal or semiconductor film formed on the dielectric multi-layered film and which is superior in freedom from glare, visibility, decorative aspect, productivity, cost, etc.

Abstract: This invention relates to a device for an outside mirror for motor vehicles which is electrically slowly shiftable around a vertical axis for adjustment purposes and rapidly shiftable temporarily by a switch to check the blind spot. A supplemental device comprises first element which, when said switch is actuated, oscillates between two limit points whereby at the actuation of said switch a synchronous and fast shifting of the mirror around the vertical axis is effected, and a second element running synchronously with the slow shifting of the mirror around the vertical axis for adjusting the mirror to the distance of the driver's eyes fixes the two limit points for the fast shifting of the mirror. According to the invnetion the supplemental device (without said switch) is situated directly behind the mirror. A third element extends into the supplemental device establishing a direct mechanical connection between the mirror and the first and second element. Thus a very compact and secure device is formed.

Abstract: An aspheric mirror in the form of a toric mirror includes a first element having a front surface which defines a spherical reflector and a spaced apart rear surface. The spherical reflector includes a constant radius of curvature, an X-axis with an X-axis radius of curvature and a Y-axis with a Y-axis radius of curvature. The first element possesses a first rigidity factor. A second element includes a front surface sized to mate with the rear surface of the first element along an interface zone. The second element possesses a second rigidity factor. An interface contour device produces a differential cylindrical contour within the interface zone between the first and second elements. The interface contour device is aligned to modify the X-axis radius of curvature of the spherical reflector without significantly modifying the Y-axis radius of curvature.

Abstract: A mechanism (10) for adjustably mounting a laser mirror includes fixed and movable plates (20, 22) with a pivot assembly mounted therebetween. The mirror (44) is mounted on the movable plate (22). A pair of wedge structures interface between the two plates at locations spaced from the pivot assembly and function to vary the angle between the plates about the pivot assembly. In the preferred embodiment, the wedge structure includes a threaded screw (54) for driving a sphere (58) against an inclined plane (50). The assembly allows adjustment of the mirror face (46) about all axes.

Abstract: A photographic imaging system for use in a stereographic camera for producing stereographs of a scene being viewed comprising a first set of reflective surfaces for directing light emanating from a scene being viewed along a first optical path. A second set of reflective surfaces directs light emanating from a scene being viewed along a second optical path. An aperture is provided, the first and second optical paths passing through the aperture. A shutter is provided for controllably opening and closing the aperture so that the light flux passing along the first and second optical paths is substantially equal. A holder is provided for holding a single frame of film, the single frame of film having a first portion of film and a second portion of film. A first lens, disposed along the first optical path, forms a first image substantially on the first portion of film and a second lens, disposed along the second optical path, forms a second image substantially on the second portion of film.

Abstract: A mirror for use in harsh environments, such as an anti-condensation shower mirror where hot water is sprayed onto the back of the mirror, comprises a transparent sheet (10), preferably of acrylic, a reflective film (12) on one side of the sheet, a protective layer (14) of paint on one side of the reflective layer, and a protective backing layer (16) of plastic, preferably made of PVC, on one side of the protective layer. The protective plastic backing layer protects the fragile paint and reflective films against the effects of hot water, which would otherwise cause these layers to deteriorate and flake off, thus running the mirror over time. Also an edge gasket of rubber (18) may be provided around the edges of the mirror to protect the edges of the layers.

Abstract: Homogeneous illumination of a strip of area (12) on a surface (13) of a substrate (10) is achieved by directing light at a plurality of first light-reflective members (22) arranged above the substrate in spaced relationship parallel to the longitudinal axis (17) of the strip. Each ligh-reflective member (22), which takes the form of a three-sided prism reflector, splits the light incident thereon into two beams (40) which are each reflected by the reflector in an opposite direction downwardly at the strip so as to strike it at a grazing angle. Light is also directed at a second light-reflective body (30) which takes the form of a metal bar spaced above the substrate parallel to the longitudinal axis (17). The bar has a light-reflective surface (32) which serves to reflect the light directed thereat towards the strip (12) at an inclined angle in a direction generally perpendicular to the beams (40) reflected by the first light-reflective members (22).

Abstract: A narrow-band filter for absorbing radiation at a wavelength in the range of 9.2 to 10.8 microns and for transmitting radiation in a surrounding 8 to 12 micron band having a high transmission ratio. The filter is comprised of a pure or mixed alkali-halide crystal having optical incidence and transmission surfaces and thiocyanate or borofluoride as an impurity.

Abstract: A surgical microscope apparatus provided with a failure detecting device for conducting an initial examination and an ordinary examination of an illumination device and a failure detecting device for conducting the ordinary examination of an electric magnification and focusing device, in order to make it possible to self-examine what is defective and indicate the result when failure is caused. The failure of the illumination device is immediately indicated by the self examination of the failure detecting device when a power source is turned on for use.