Abstract: The hair grooming mirror apparatus comprised of a mounting assembly for securement of the mirror apparatus to a ceiling or other overhead structure. A mirror frame is suspended from and carried by the mirror assembly such that it can be raised and lowered with respect to the mounting assembly. A mechanism similar to a mechanism used in louvered blinds of the kind which can be raised and lowered vertically is also employed in the mirror apparatus of the present invention. The mirror frame carries a pair of mirror panels which are angulated with respect to one another at an angle which is preferably an obtuse angle. In accordance with this mirror apparatus, a user can first comb a front portion of his or her hair by looking into a fixed supported mirror. The user can then lower the mirror frame and position the pair of mirror panels in front of the user and look into the mirror panels then positioned in front of the user.

Abstract: A specialty eyewear device including an optical frame that carries a pair of highly reflective surfaces that permit a wearer to experience an angular offset between the direct line of vision and the effective line of vision. No refraction occurs in the performance of the device, and no image reversal takes place. Modifications of the invention allow for certain angular adjustments in the device which can both change the actual angular offset which occurs between direct and effective line of vision, and permits angular rotation of a given angular offset.

Abstract: A mirror comprises a first layer being of a transparency, a second layer mounted on the first layer and being in the form of a translucent metal thin film with a thickness of less than 350.ANG., a third layer mounted on the second layer and being in the form of a transparent oxide or fluoride of a metal and a fourth layer mounted on the third layer and being in the form of a thin metal to be used as a reflecting member.

Abstract: A display apparatus comprises a display, a first diffraction grating for diffracting light from the display, and a second diffraction grating for diffracting diffracted light from the first diffraction grating, so that a half-width of the first diffraction grating is set to be larger than that of the second diffraction grating.

Abstract: A generally rectangular tensioned cover comprises a pair of end forms having end portions. They are generally parallel along their lengths. A pair of side rails which are generally orthogonal to the end forms have first and second end portions. They are spaced substantially the lateral separation of the end forms with the end portions of each side rail positioned adjacent the end portions of an end form. A tensionable sheet spans from one side rail to the other and from one end form to the other. The sheet's first end portions are attached along the end forms. The lateral peripheral portions of the sheet are attached along the side rails. The end portion of the one end form is fastened to the first end portions of the side rails. The end portion of the other end form is fastened to selectable regions of the second end portions of the side rails. The sheet is tensioned longitudinally between the end forms.

Abstract: The hinge structure has the peculiarity of being constituted by an elastically compressible bellows-like element which comprises lugs for temporary coupling to the frame and to a rod. The rods are biased to a position adjacent to the lens of the frame in case of non-use.

Abstract: A visual acuity testing device and method of preparing same are provided, the device being in the form of an optotype as well as a series of optotypes of the same nature, each of which is defined according to a rectangular optotype gridwork including a plurality of rectangular unit areas of contrasting colors or differing contrast properties that are varied in coloration or contrast as desired in order to form a set of optotype characters that exhibit similar peripheral shapes that vary from one another to define readily recognizable optotype characters.

Abstract: A computer generated diffraction grating which exhibits multiple order scattering noise is illuminated by a point source to generate a first wavefront which is intersected with a second wavefront to form a desired interference pattern in a recording medium. The point source is moved relative to the recording medium during exposure in order to reduce multiple order scattering noise.

Abstract: In a semiconductor laser beam source apparatus, laser beams emitted by a plurality of semiconductor lasers, collimated and made parallel to each other are coalesced by a converging lens. The laser beams are respectively reflected by a plurality of reflecting mirrors having reflecting surfaces parallel to each other and guided to the converging lens. The reflecting mirrors respectively have a mounting surface at a predetermined angle with respect to the reflecting surface and are secured to a common plane.

Abstract: Described is a boring tool cooled from within made of a tool spiral and a clamping cylinder. The tool spiral is received in an interlocking way in a recess of the clamping cylinder and is supplied with coolant over its proximal end, which lies in the recess. The tool spiral (4; 44; 74) is received in a spring chuck (12) which, on the side facing away from the clamping cylinder, carries a drive disk (22; 62; 92) that engages in an interlocking way into the grooves. Further, the chuck body (14) has a central internal thread (26) in which an adjusting screw (24) having a central recess (32) is provided, an adjusting screw (24) against which the tool spiral under sealing of its coolant channels (8; 48; 78) can be pressed against the inner space (34) of the spring chuck (12). Tool spirals consisting, for example, of hard metal can be used more economically in this way.

Abstract: Apparatus for x-ray microholography of living biological materials. A Fourier transform holographic configuration is described as being most suitable for the 3-dimensional recording of the physical characteristics of biological specimens. The use of a spherical scatterer as a reference and a charge-coupled device two-dimensional detector array placed in the forward direction relative to the incident x-radiation for viewing electromagnetic radiation simultaneously scattered from both the specimen and the reference scatterer permits the ready reconstruction of the details of the specimen from the fringe pattern detected by the charge-coupled device. For example, by using a nickel reference scatter at 4.5 nm, sufficient reference illumination is provided over a wide enough angle to allow similar resolution in both transverse and longitudinal directions. Both laser and synchrotron radiation sources are feasible for generating microholographs. Operation in the water window (2.4 to 4.

Abstract: An exposure station and a film transport comprise apparatus for recording a series of strip holograms on a continuous length of non-perforated film. The apparatus includes a vacuum-platen for keeping the film stable during holographic recording and a film stepping mechanism for advancing the film in equal steps between successive exposures. The film stepping mechanism is operationally coupled to the vacuum-platen and includes a drive arm that grips the film during each advance and releases the film without backlash between successive film advances. The film stepping mechanism includes a single-acting vacuum cylinder for moving the drive arm. The apparatus does not introduce strain in the film during the transport process which could result in non-uniform demodulation of the successive strip holograms. The stepping increment (holographic strip width) is adjustable with accurate increments as small as 0.005" being obtainable.

Abstract: Disclosed is an outside rear-view mirror for a motor vehicle having a reverse gear. The outside rear-view mirror comprises a mirror housing adapted for being mounted to a body of the vehicle. A mirror glass is held by the mirror housing and a drive motor is provided for tilting the mirror glass about at least one axis with respect to the vehicle. The mirror is coupled to the drive motor through a link. A current supply circuit for the drive motor is provided and includes a reverse switch for reverting the direction of rotation of a rotor of the drive motor. A control member for switching the reverse gear is coupled to the reverse switch and to a preset displacement restricting device for restricting a rotation of the link. The displacement restricting device may be controlled electro-mechanically or may be formed electronically.

Abstract: An improved optical assembly which provides a panoramic field of view for infrared motion detection. In one form of the invention the optical assembly comprises a spherical section having an inner surface and an outer spherical surface, the outer spherical surface having a radius of curvature centered in a focal region which is suitable for placement of an infrared detector. The inner surface of the spherical section comprises a plurality of circular convex lenses, each lens having an optical axis passing through the focal region. The combination of the outer spherical surface with each circular convex lens forms a biconvex lens having a focal point in the focal region. Radiation received by each biconvex lens from a zone in the field of view is focused in the focal region for sensing by the infrared detector.

Abstract: An outside mirror of a vehicle has an ultrasonic vibrator attached to its rear side for removing water and the like from the front side of the mirror. The mirror is attached to a frame by means of a supporting member extending around an outer peripheral edge of the mirror. The supporting portion is formed of a material having less acoustic impedance than the mirror. The vibrator has electrode connectors connected to wires from a control device by being mechanically clamped to those wires.

Abstract: A mirror and bracket assembly wherein the mirror housing has a flat mirror and a convex mirror. The mirrors are secured to support posts within the mirror housing such that if the mirror housing is dropped of jarred the flat mirror and the convex mirror would not become misaligned.

Abstract: A center shaft is erected from a base fixed to the car body. When a planet gear driven by a motor runs round a sun gear fixed to the center shaft, a mirror housing can be swung. The mirror housing is supported at both ends of the center shaft and a driver system comprises plural stepped gears attached to two parallel shafts, respectively, in series and engaged with one another.

Abstract: An eye refractive power measuring apparatus is disclosed. It includes a chart projection system for projecting a chart image for test use to a retina of an eye under test by using visible light, a measuring target projection system for projecting a measuring target image to the retina of the eye under test by using invisible light, a display device for displaying the measuring target image as a visible image, a focussing state of the measuring target image being made changeable simultaneous with change of a focussing state of the chart image for test.

Abstract: According to the invention an outside rear-view mirror for a vehicle especially for a truck or a bus is provided which has a holder rod adapted to be fastened to the car body and a mirror housing mounted to a portion of the holder rod. The mirror housing accommodates a mirror glass the position of which may be adjusted by mechanical or electrical means. The mirror housing is formed with a shackle projecting towards said portion of the holder rod, and a first clamping piece is fixed to the shackle by two bolts which are spaced in the direction of said portion of the holder rod and which extend through a curved slot cut into the shackle. The length of the slot is substantially greater than the distance between the bolts. A second clamping piece may be mounted to the first clamping piece so that both clamping pieces grip the outer contour of said portion of the holder rod.

Abstract: This invention is a novelty head gear for wear by an individual and includes a pair of sunglasses having a novelty design of moose antlers attached to the sunglasses and extending sidewardly into opposite directions.