Abstract: An optical simulation system comprising a model (12) and collimating optics (16) is disclosed. An image is presented to an observer (32) by means of a plurality of lenses (24, 26) and mirrors optically alligned with the collimating optics. The optics of the system are adjustable so that the range changes of the model can be accommodated without moving large optical elements.

Abstract: An optical system for producing stereoscopic imaging of a subject. The system includes an objective lens for producing an image of the subject, and right and left ocular lenses for viewing the image through right and left eyes, respectively. A polarizing filter device positioned near the objective lens divides the image produced by the objective lens into left and right perspective components characterized by different polarization directions. Right and left polarizing filters positioned near the right and left ocular lenses allow these right and left perspective components to be viewed exclusively through the right and left ocular lenses, respectively. One embodiment of the invention is a high-power stereoscopic microscope. Another embodiment is a single-objective binocular telescope.

Abstract: A compactible decoy device. A decoy device according to this invention has a body of resilient foam material having at least one and preferably more radiation reflecting surfaces disposed within its volume. The radiation reflecting surfaces are also collapsible. The device can be compressed in all three dimensions and will deploy to the fully expanded position upon release from the compressed position.

Abstract: An isotropic light source produces uniform illumination of a generally planar objects to be visually inspected by a microscope such as a P.C. board having an irregular specular surface. Detrimental dark spots which are normally produced are eliminated by providing a skewed beamsplitter between the microscope and the viewed surface, which beamsplitter redirects light directly at the object along or near the optical viewing axis. The isotropic light source is a light integrating cavity in a first embodiment and a pair of fluorescent lamps in a second embodiment.

Abstract: A method is disclosed of forming apparatus for use in a three stage integral photography process that includes a camera for taking the integral photographs; printing apparatus for converting the psuedoscopic negative produced by the camera into an orthoscopic positive; and a viewing screen for the positive. The apparatus comprises arrays of lenslets formed on transparent plastic sheets and plates with arrays of apertures on the same centers as the lenslets and the elements must have very precise dimensional relationships to one another. In the method, all of the elements are produced by symmetrical, multi-stage processes using the same array of elemental mold parts in the first stage in the process. One elemental mold part or "Janus plug" is provided for each optical element in the array.

Abstract: This invention pertains to an improved scanning device which uses a S shaped flexure (S-flex). The use of the S-flexures in opposition provides a very rigid structure that is significantly lower in cross axial error displacement and also halves the radius of gyration which in turn provides for highly accurate scans at very high resonant frequencies. The resonant scanner also can have high levels of deflection with minimal wobble which opens new areas of use. This scanner is without bearings and the stress loads on the spring members are significantly lower than previously available at the same accuracy level and the shape of the S-flex members readily lends to attachment of mirrors or other scanning devices. Improvements in the index of performance of 5 to 20 times the performance of currently available scanners are possible with the invention.

Abstract: This invention relates to a wide angle viewing system (V) which may be inserted into a high temperature environment, in particular, a furnace or burner (F). The superior interior wide angle view (A) yields pertinent information for use in diagnosing combustion problems. The access to the interior from the outside is variable from one furnace or burner to another. The viewer, therfore, was designed so that the wide angle view is retained regardless of the distance (D) the observer (O) must be from the outside to the interior. The wide angle viewer is simply affixed to the end of a pipe or tube (24) of sufficient length to reach to the interior (26), and then inserted into the interior (26) where the observer (O) looks into the rear end (24r) of the pipe to view the interior (26). Photographic equipment may also be installed at the rear end of the tube to provide a pictorial documentation of the interior (26).

Abstract: A compact reflective head-up display incorporating first and second cooperative and converging mirror elements (34,18) one of which has a rear surface reflector (18), and the other of which (34) is partially transmissive and includes a central reflective portion (33), said first converging mirror (34) combining a remote image viewed by a pilot with a display image provided to said first converging mirror (34) by said second converging mirror (18).

Abstract: A microscope is provided which is simply, accurately and inexpensively constructed from substantially all extruded parts. The modular construction of the microscope greatly reduces the costs of the instrument without sacrificing accuracy. The modularity further provides for a microscope which is readily adaptable to serve several distinct and separate functions.

Abstract: An optical deflector for deflecting a laser beam from a laser by rotating a polygon mirror uses a dynamic pressure pneumatic bearing as a radial bearing and a magnetic bearing as a thrust bearing. The deflector includes a hollow rotor rotatable integrally with the mirror, a stationary shaft received in said hollow rotor, a casing member accommodating the rotor and stationary shaft, and an annular rotor magnet assembly mounted on the outer periphery of the rotor. A first rotary magnet is mounted in an upper end portion of a rotary shaft and a first stationary magnet in an upper end portion of the stationary shaft in such a manner as to face each other with the same polarity, a repulsive force acting between the two magnets serving as a thrust magnetic bearing. A second stationary magnet is arranged to face the first rotary magnet with the same polarity.

Abstract: The invention relates to electromagnetically commanded optical switches and in particular to access couplers to a series bus. The subject of the invention is an optical switch of the movable mirror type which has an electromagnet which, under the influence of a command signal, permits the displacement of a slider supporting the mirror (31) and a magnetic circuit (46, 47, 30) permitting the displacement of the slider to take place parallel to a plane of reference (P) in the zone of switching.

Abstract: An endoscope optical system comprising rod lenses between the objective and ocular lenses has the feature that gradient rod lenses, whose lengths each end centrally between two intermediate images, are installed with small spacings between the ocular and objective lenses. To this end, the rod lenses terminate centrally between two intermediate images and the distal and proximal gradient rod lenses have no more than half the length of the spacing between said intermediate images.

Abstract: A viewing apparatus suitable for use as a night sight includes an image intensifier (3) arranged between an objective (1) and an ocular (7). An alignment member (25) has an alignment marker (28) arranged between the image intensifier (3) and the ocular (7) adjustable by rotation of an alignment marker support (23) about two orthogonal axes (X, Y) which intersect each other at a virtual point of rotation (M) which is located on an optical axis (17).

Abstract: The reflector is mounted on a single spoke of a spoked wheel and comprises plate member having a body portion disposed between opposed end portions. A spoke is received in appropriate recesses in the body portion adjacent to the end portions with the body portion disposed on one side of the spoke and the end portions on the opposite side of the spoke. Tab means on the respective end portions of the member serve to generally preclude a dislodgement of the reflectors during operation of the spoked wheel.

Abstract: A turning vane is mounted on a mirror assembly for capturing, turning and ejecting an airstream across a mirror surface. The resulting air jet creates an air barrier protecting the whole mirror face from deposition of the airborne dirt, fluid, and other matter.

Abstract: An optical line simulator comprising input and output ports for coupling to optical fiber, a partially transmissive plane mirror interposed in the optical path between the ports, a reflector adjacent to the mirror and a variable density neutral filter in the optical path. This device simulates path delay and loss. These factors can be varied independently by adjusting the distance between the mirror and the reflector, and by varying the filter density.

Abstract: In an optical scanning type system, a laser beam emitted from a laser generator is directed to a mirror which is fixed on a movable pedestal. The laser beam reflected from the mirror is converged on the end face of one of an array of optical fibers by a convergent lens which is also fixed on the movable pedestal. A cam follower is fixed to the pedestal and caused to contact a cam surface of a cylindrical cam body, which defines a number of steps having a stepwise varying height and formed so as to have a predetermined pitch. The cylindrical cam body is coupled to a step motor. The optical fibers are located so as to arrange the end faces thereof at a pitch corresponding to the pitch of the steps. The cylindrical cam body is stepwisely driven so that the cam follower also stepwisely follows the cam surface. Thus, the pedestal is stepwisely shifted and the laser beam is also stepwisely introduced into the optical fibers.

Abstract: A scanning optical system such as a laser beam printer that comprising a semiconductor laser, a collimator lens that produces substantially parallel rays of light from the beam emitted from the semiconductor laser, a convex cylinder lens having a curvature within a cross section taken in the auxiliary scanning direction, a deflector, and a scanning lens that focuses the deflected rays to form a spot on a scanning surface. The normal direction of light emitting from the semiconductor laser being in alignment with the scanning direction of the scanning lens system, and the scanning lens system having an anamorphic configuration.

Abstract: Beam focusing and scanning method and apparatus are shown comprising a plane mirror (40) upon which a laser beam (32) is directed through a focusing lens (38). The beam is reflected back through the focusing lens (38) onto a pivotal mirror (52). The plane mirror (40) is movable back and forth along the beam axis, and the movement of plane mirror (40) and pivotal mirror (52) is synchronized whereby the beam is focused at the face of an object (54) while scanned across the object.

Abstract: The apparatus permits an external target to be viewed along a sight-line by a sensing device and for the projection of a beam of laser radiation (12) towards the target. The apparatus includes a viewing window (10) transparent to radiation at a wavelength to which the sensing device is sensitive and inclined at an angle to the sight-line. The window (10) has a viewing area through which the target may be viewed and a laser output area through which the laser beam passes. An anti-reflection coating is formed on that surface of the viewing window (10) remote from the target. Optical deflector means (16) are provided for deflecting laser radiation reflected from the other surface of the viewing window in the laser output area into the viewing area of the window for reflection into the field of view of the sensing device.