Abstract: The actuator unit housing for a rearview mirror includes two electric motors for tilting a mirror element in an actuator unit, and a drive transmission, and means for foldably supporting a mirror element on the upper surface of the actuator housing. A guide inlet for inserting an electric supply and control harness line of the motors is formed in the actuator unit housing. Since the guide inlet is composed of a plurality of lateral slits with labyrinths, the movement of the harness line occurred when the actuator is assembled or repaired can be suppressed. When a connector socket is buried in the slit, the socket is positioned by the labyrinth, and even if an external force by engaging a plug piece is applied, the socket can be stably held.

Abstract: An optical apparatus with a slide lighting system for detecting a fertile period during a woman's menstruation cycle from her saliva has inner and outer telescopic tubular bodies. The inner tubular body has an optical system of three, fixed lenses for 100 fold magnification of the saliva on a slide. The outer tubular body has, at one free end, a window for receiving the slide and threading for the axial attachment of another light-device tubular body for lighting the slide.

Abstract: A reflector is provided which includes a resilient member formed of elastomeric material having embedded in at least a portion thereof a plurality of retro-reflective glass beads. At least a portion of the outer surface of the elastomeric material is removed to expose at least a portion of the glass beads thereat. The resilient member can be formed either with or without a base member. The base member can be formed either integrally or non-integrally with the resilient member to serve as a support body for the resilient member. When formed with a base member, at least the distal end of the resilient member has a surface portion of the elastomeric material forming the resilient member removed to expose at least a portion of the glass beads thereat.

Abstract: A device for and method of editing a reproduction to be made by using a diazo process in which the device comprises a portable body adapted to be hand held. The body has a chamber and a port that provides access from the chamber outwardly of the body. An electric light source is disposed in the chamber of the body to provide light through the port with the electric light source having sufficient illumination to expose a light sensitive diazo compound. Electrical power provides power to the electric light source such that light from the electric light source in the body is directed through the port onto the light sensitive diazo compound of any undesired portion of the reproduction prior to developing the reproduction.

Abstract: A light beam fluctuation compensating device is provided which comprises a light source, a first optical system for splitting a light beam emitted from said light source into two light beams and a second optical system for irradiating the two light beams split by said first optical system onto a target. A light beam fluctuation method utilizing the device is also provided.

Abstract: A perimeter having an image projection system which projects an undistorted line target across the full range of a patient's field of vision is disclosed. The image projection system includes a projector, a bundle of optical fiber elements, and lenses associated with the optical fiber elements adapted to focus the target onto the observation hemisphere of the perimeter. The perimeter may also be provided with a fixation monitor system which monitors the patient's gaze and which will interrupt projection of the target when fixation is lost. The fixation monitor includes at least one sensor for detecting the intensity of infrared light reflected off the patient's eye, and a comparator adapted to compare the output signals from each sensor during the examination with base signals obtained at fixation. Any signal variation will indicate that fixation has been lost and projection of the target will be interrupted. Projection will resume once fixation has been reestablished.

Abstract: Two electro-optical computer interface embodiments provide for one-way read only and two-way optical read and write. The two-way embodiment includes a main module having a shared memory, and a processor/controller and a main bus. A plurality of local processor modules each includes a local memory, a local processor, and a local bus. The processors are electrically joined by control conductors which provide for coordination and timing between local processors and the main processor. Each memory array has a film deposited on it by the Langmuir/Blodgett technique. The memory arrays are each illuminated by a pulsed laser or Q-switched laser. The film is responsive to the electric fields in the memory array cells for modulating the illumination light. The image is then read onto other memory arrays which are responsive to the illumination for transferring the data between memories.

Abstract: A vehicle parking guide for use on a supporting surface disposed in a preselected travel path. The vehicle parking guide includes a plate adapted to be fixedly mounted on the supporting surface. It also includes lateral vehicle positioning members for ensuring proper lateral vehicle positioning to coincide with the preselected travel path as the vehicle approaches the supporting surface. It further includes a longitudinal vehicle positioning member for ensuring proper longitudinal vehicle positioning to coincide with a preselected stopping point as the vehicle is stopped near the supporting surface. The vehicle parking guide is also provided with at least one fastener capable of fixedly mounting the plate on the supporting surface. With these features, the vehicle parking guide is adapted for properly positioning a vehicle in a preselected position as it is parked.

Abstract: A diffractive lenslet array receives light from multiple lasers. The lenslet array is spaced apart from a partially reflecting mirror by a distance Z=nd.sup.2 /.lambda. where n is an integer or half integer, .lambda. is the laser wavelength and d is the spacing of the lenslets in the array. In a preferred embodiment the apparatus is a unitary design in which the lenslets are etched into one surface of a substrate and a parallel surface is coated to form the partially reflecting mirror. The lenslets abut one another to produce a fill factor (percentage of array containing light) close to one and each of the lenslets is a multistep diffractive lens. Diffractive speading over a round trip distance from lasers to mirror and back again causes feedback light from a single lenslet to couple into adjacent lenslets.

Abstract: A bi-focal corneal lens of uniform index of refraction, which is self-orienting, which is cut on a lathe with a lenticular attachment, so that the various curves can be cut in a minimum of passes. Mathematical equations are furnished to be fed to a computer, which calculates the parameters of the various curves in accordance with the data furnished by the optician so as to provide a lens with a maximal optical zone and a minimal thickness.

Abstract: A copying zoom lens comprising, in order from the object side, a first lens unit having a negative focal length, a second lens unit having a positive focal length and a third lens unit having a negative focal length. An axial space between the first and second lens units and an axial space between the second and third lens units are varied while moving an overall lens system and keeping constant a distance between the object and an image surface, thereby performing a zoom effect. The first lens unit is composed of a single negative meniscus first lens element having a concave surface directed to the object. The second lens unit is composed, in order from the object, of positive second lens element, a negative third lens element, a negative fourth lens element and a positive fifth lens element to constitute a three-lens element subsystem. The third lens unit is composed of a single negative meniscus sixth lens having a concave surface directed to the image surface.

Abstract: A liquid crystal wave division device includes first and second polarization changing cells, the polarization changing cells utilize homogeneously aligned nematic liquid crystal material to effect the change of polarization of a preselected frequency portion of a multifrequency incident light beam.

Abstract: A wide angle, finite conjugate lens is optimized for use in photocopying applications. Two moveable groups of lenses are movable towards and away from each other and a central aperture. An outer lens group pair is moveable with respect to a moveable inner lens group. The lens groups are moved during a zoom magnification change so that the spaces between the inner and outer lens groups are changed to adjust lens focal length while the space between the inner lens group and a central aperture stop is adjusted to compensate for astigmatism and field curvature variation.

Abstract: A zoom lens comprising, from front to rear, a first lens unit of positive power for focusing, a second lens unit of negative power as the variator, a third lens unit of negative power as the compensator, an afocal fourth lens of positive power, and a fifth lens unit for image formation, the fifth lens unit including, from front to rear, a bi-convex first lens whose front surface is of stronger curvature, a negative meniscus second lens of forward concavity, a positive third lens whose front surface is of stronger curvature, a negative meniscus fourth lens of forward convexity, a bi-convex fifth lens whose rear surface is of stronger curvature, and a positive sixth lens whose front surface is of stronger curvature, wherein the following conditions are satisfied:1.45<F.sub.1 /F.sub.4 <1.652.5<F.sub.4 /Fw<2.80.75<.vertline.f.sub.5,4 /F.sub.5 .vertline.<1.30.47<D.sub.5,6 /F.sub.5 <0.65where F.sub.1, F.sub.4 and F.sub.

Abstract: A microscope system which includes an eyepiece section and a base having an integral stage section for holding a specimen to be viewed. The eyepiece section holds a lens and further includes integral bearing elements for movably engaging a complementary guide in the base. A stage hole in the stage section is aligned with the lens and a specimen is held in registration with the stage hole. An adjustment mechanism is provided to finely adjust the position of the eyepiece relative to the base to adjust the focus of the lens. Light is gathered and directed to the specimen by an angularly adjustable mirror or an optical wave guide.

Abstract: A reflection type projection optical system suitable for projection of a micropattern object is capable of performing reduction projection. The projection optical system comprises first and second optical subsystems which are combined to set a Petzval sum to zero. A first optical subsystem S1 forms a reduced image of an object, and a second optical subsystem S2 forms a further reduced object image from the image formed by the first optical subsystem S1.

Abstract: A zoom finder comprising a system for forming the image of a measuring field frame and a vari-focal system in the order from the object side and arranged that the apparent size of the measuring field frame varies at the time of zooming.

Abstract: An optical information recording and reproducing apparatus comprises: a laser light source having a Gaussian intensity distribution of an emitted laser beam; an optical system for focusing the laser beam emitted from said laser light source, having a number of aperture NA represented by ##EQU1## wherein .lambda. is a wavelength of the laser beam emitted by said laser light source, and .omega..sub.0 is a diameter of a laser beam spot focused by said optical system.

Abstract: A zoom lens of a compact size and good performance comprises a front diverging lens group and a rear converging lens group which are mechanically movable for variable power, the front diverging lens comprising a first lens of negative meniscus which is convex toward an object, a second negative lens, and a third lens of positive meniscus which is convex toward the object, the rear converging lens comprising a fourth positive lens, a fifth positive lens, a sixth negative lens, and a seventh positive lens, there being an aperture disposed more closely than the rear group to the object and movable with the rear group.

Abstract: A Gauss type rear focus lens includes a forward group having, in succession from the object side, a first lens component having its convex surface facing the object side and having a positive refractive power, a second lens component comprised of at least one lens and having a positive refractive power, and a third lens component having its sharply concave surface facing the image side and having a negative refractive power, the forward group having a positive refractive power as a whole, and a rearward group disposed on the image side relative to the forward group, the rearward group having a fourth lens having its sharply concave surface facing the object side and having a negative refractive power, a fifth lens having its sharply convex surface facing the image side and having a positive refractive power, and a sixth lens having a positive refractive power, the rearward group having a positive refractive power.