Abstract: Laser mirror mounting device having a centralized mounting plane including a mirror mounted upon the mounting device, offset from the mounting plane, a coolant port and a coolant passageway for conducting coolant therethrough to draw heat from the mirror, together with a coolant manifold coupled between the coolant port and the coolant passageway, such manifold having a configuration symmetrical about the centralized mounting plane, for substantially eliminating coolant induced bending moments about the centralized mounting plane.

Abstract: A quasi-reticle for an optical device, generated by enhanced multiple reflections. The reticle comprises fixation target generative means operative to generate a line of ghost images or other multiple fixation targets spaced along the optical axis of the optical device, whereby to enable the viewer by aligning his line of sight with the line of multiple fixation targets to position his eye properly with respect to the optical axis of the optical device.

Abstract: A replica hologram structure wherein an information carrying relief pattern on one surface of the hologram is not metallized for reflection, as is the usual case, but rather air between the hologram and a supporting substrate causes incident light to be reflected from the surface relief pattern, thereby to form a reconstruction of an image or other light pattern. The surface relief pattern may be positioned immediately against the substrate, or, alternatively, held apart from it by spacers. The hologram and substrate are held together by any of a wide variety of mechanisms, including adhesive, welding and static electricity, in a manner that does not interfere with the reconstruction or viewing of the image or other light pattern from the hologram. Such a hologram structure has a use in product packaging and other applications where it is desired to be able to look through the hologram as well as be able to view the image or other light pattern reconstructed from it by reflection.

Abstract: In the present invention, a mirror transducer assembly is comprised of a mirror assembly and a driver assembly. Both the mirror assembly and the driver assembly include a diaphragm portion surrounding an integral central post member. The central post members are rigidly coupled together to provide tandem translation movement along a central axis passing through the central post members. A pair of non symmetrical piezoelectric disks are positioned on opposite sides of the diaphragm portion of the driver assembly. The size of the piezoelectric disks are selected to achieve a selected temperature sensitivity of movement of said tandem central members along an axis passing therethrough.

Abstract: To reliably reduce the risk of injury in the returning tilting movement of the mirror housing from a rearward tilted end position into a position of normal use a spherical cap is mounted to a pedestal for the mirror housing which covers the open space between a front edge section of the mirror housing and the pedestal when the mirror housing is tilting rearwardly. Stops are provided for ensuring safe support of the mirror housing when assuming the rearward tilted end position thereof. The stops can be removed only by an application of force to the mirror housing whereafter the mirror housing tilts from said rearward tilting end position into the position of normal use.

Abstract: Eyeglass frames fabricated from shape-memory alloys which have optimized elasticity properties which exhibit a combination of shape-memory and elastic properties, which utilize the shape-memory property of these alloys in fastening elements, or which utilize the flexibility and fatigue resistance of the martensite state of the alloys as a hinge element are disclosed.

Abstract: An auxiliary mirror module for extending the viewing area of an existing side view mirror of the type mounted in a housing is disclosed. The module comprises a casing configured to slidably fit over at least a portion of the housing, the casing including a pair of opposed channel sections. The casing is supported on the housing by sliding the channel sections over opposed edges of the housing. The module includes an auxiliary mirror supported alongside and co-planar with the side view mirror. The casing further includes a threaded fastener for engaging a support bracket to retain the casing relative to the mirror. Retaining structure for securing the module to the housing support is also disclosed.

Abstract: An improved mirror for use with card index files. The mirror comprises a substantially rectangular flat portion which is reflective. Attached to the rectangular portion is an attachment portion for attaching the mirror to a standard card file. This attachment portion takes the form of specially shaped extensions. The extensions define cut out portions which fit over rails in the card file. The cut out portions are small enough to hold the mirror to the card file, yet large enough to permit the mirror to be easily moved while it is in the files. The mirror is manufactured for a flexible plastic so that the mirror may be easily snapped into place by a user.

Abstract: An improved beam deflector having a first ball element attached to a second ball element with the first ball element mounted in a movable socket, movable about a single axis only through the first ball element. The second ball element is mounted in a fixed socket and is rotatable about a single axis only through the second ball element. The fixed socket is fixed to the housing of the beam deflector. Rotational movement is limited by the spacing between opposing flat surfaces of the movable and fixed sockets. The movable socket is remotely movable in response to movement of a control rod which is coupled to the movable socket through a universally movable third ball and socket arrangement.

Abstract: A method for producing desired changes in a beam of coherent light radiating at .lambda..sub.1, comprising the steps of (a) splitting a beam of coherent light radiating at .lambda..sub.1, correcting one of the beams to achieve a desired wavefront and recombining this beam with the first, where a record medium (I) is placed such that the beams are separated by an angle determined by Bragg's law and the line spacing of the interference pattern formed by the two beams; (b) developing the first medium such that a diffraction grating of spacing d.sub.1 is recorded in a material, specifically sensitive to .lambda..sub.1, which will become the master; (c) illuminating the master with a second wavelength, .lambda..sub.2, selected by choice of a second medium which possesses very high diffraction efficiency. The second beam is split into two parts. The first is directed to the master. This diffracted order is recombined with the second beam.