Abstract: An optical beam steering device includes an at least partially optically transparent container having a polygonal reflector therein that is at least partially surrounded within the container by an optically transparent liquid. The polygonal reflector may be configured to have a center of mass, which is equivalent to its geometric center. In addition, the polygonal reflector may be configured so that a difference between an effective density of the polygonal reflector and a density of the optically transparent liquid is preferably less than about 2.1 grams per cubic centimeter. More preferably, the polygonal reflector and the optically transparent liquid may be collectively configured to be neutrally buoyant relative to each other within the container.

Abstract: An image-capturing module successively captures light data in batches for a scene of a whole field of view by adjusting the position of a multifaceted prism, and executes patch process on these batches of the light data to acquire an image over the whole field of view in a higher imaging quality that is generally achieved by a camera module with large number of pixels. The movable multifaceted prism may be together with an image sensing module and a lens module to be within a holder to have a compact volume for an image-capturing mobile phone, wearable device, and/or smart opto-electronics.

Abstract: A high-frequency movie camera has a sprocket wheel for supporting and transporting of a film. A rotating prism is positioned opposite to the perimeter of the sprocket wheel and is driven by the combination of a gear located on the sprocket wheel shaft and a pinion intermeshing with the gear and attached to the rotating prism shaft. In order to avoid moves caused by the necessary clearance between the gear and pinion, an electromagnetic brake is positioned on the rotating prism shaft, which is automatically controlled to limit the prism rotational speed.

Abstract: Mobile refractive optical members are placed in a device between the film and stereoscopic direct viewing windows. A drive is provided for driving the film strip bearing stereoscopic images and the mobile refractive optical members at a uniformly constant speed and in synchronism across the fields of view of the viewing windows to provide a fixed image in each window despite the motion of the film; the film strip has a sound track which may be reproduced by conventional reproduction equipment since the film strip is driven at a constant speed.

Abstract: A stereoscopic projecting apparatus has a polyhedral prism and two types of polarizing filters which are arranged at the incident (or emerging) planes of the prism and which have orthogonal deflecting directions. Left and right-eye pictures are alternately formed on the consecutive frames of a cinefilm. The cinefilm is driven in such a way as to cross the projection region of light emitted from a lamp. An optical image transmitted from the cinefilm is projected onto a screen by the polyhedral prism, through a relay lens, a projection lens or the like. The left and right-eye images are deflected in directions 90.degree. apart from each other, by the polarizing filters at the respective incident or emerging planes of the prism. A viewer can stereoscopically observe the image superimposed on the screen, using polarized viewing glasses having polarized lenses deflected in the deflecting directions of the images.

Abstract: A compact, easily installable light detector unit is provided to automatically correct malfunction in film feed in projection devices of the type described in U.S. Pat. No. 4,312,576. Light is projected through the perforation apertures in the film and conducted to light sensing a element by means of a fiber optic pipe. The mechanism which corrects malfunctions in film feed is activated only when such correction is required.

Abstract: A driving device which enables the use of films with or without perforations and the driving of a perforated film without using the perforations and sprockets in movie projectors and editors with optical compensator and steady flow of the film, and any other device where the film between the two reels is driven conventionally with a perforation-sprocket system.

Abstract: A motion picture film projector includes a sound head for playing back or for recording a sound track on the film. Absolute synchronism between the picture and sound is assured by the use of a single motor and common shaft to move the film past the sound head and to rotate the optical rectification system. In one embodiment, the sound head is mounted on the concave side of a stationary arcuate film guide opposite the sound track, and the film is driven past the sound head by a sprocket wheel mounted on the common shaft adjacent the optical rectification system.

Abstract: When used for projecting or editing motion picture film the optical rectification apparatus produces a stationary image of a frame of a moving film and a succession of superimposed stationary images from successive frames of the moving film. The apparatus employs an optically transmissive hollow cylindrical prism having a cylindrical external surface and an internal surface consisting of a number of facets. Light from the moving film is passed outwardly through the wall of the rotating prism and through a stationary plano-concave cylindrical lens positioned with its concave surface adjacent the external surface of the prism, but spaced slightly from it. The prism is connected to the same shaft as the film sprocket wheel resulting in an isotransport system in which the prism rotates in synchronism with movement of the film to deviate the light through an angle sufficient at each instant to compensate for the angular deviation of the light caused by movement of the film.

Abstract: The camera has first and second sprocket rollers for passing film into and receiving film from a film gate which are positively geared together to assure uniform tension and thus avoid frame line movement. In addition, an optical prism arrangement is provided providing a folded optical path to enable accommodation of a longer back focus objective lens length than could otherwise be accommodated within a given camera casing size. A rotating multi-surfaced prism is mounted on the same shaft as one of the sprocket rollers to cause image movement through the film gate with movement of the film so that continuous film movement can be realized. A rotatable shutter intercepts the light to the film gate and is positively interconnected with rotation of the multi-surfaced prism and sprocket rollers such that a series of images can be successively photographed during continuous film movement.