Abstract: A microfiche having pinholes instead of lenses. The pinholes and thickness of the fiche are of such dimensions that the device functions as in the manner of a pinhole camera.

Abstract: An optical magnifying device employing fiber optics. When functioning as a microscope, the object plane is defined by and divided into sub-areas by the input termini of many coherent fiber bundles. Each output terminal of each bundle is provided with an objective lens which projects onto an image plane. When used as a microfiche reader, a first magnifying stage is provided, and this (first) image is in turn further magnified in the same manner. Microfiche characters of 2 micron size may be resolved by the entire system.

Abstract: An indexing construction for microfiche elements of the type wherein the microfiche is provided with integral lens elements to define a lensfiche. The improvement comprises raising the lens elements with respect to the microfiche to thereby define a plurality of upstanding positioning and indexing nodules. These nodules cooperate with complementary nodules on either a viewing screen or a harness member. By virtue of this construction both alignment of the lensfiche and indexing thereof relative to a viewing screen are facilitated.

Abstract: A microfiche structure consisting of a laminate of an opaque, apertured web sandwiched between two transparent sheets. The transparent material partially extends into each aperture to thereby define, for each aperture, an optical doublet. The laminate may be continuously formed by compression, as by rolls.

Abstract: A micro information reader defined by a thin container open at one side. The open side receives a micro information carrier. The carrier and the thin container are provided with interengaging ridges which function as detents to index the micro information carrier with respect to fixed illumination sources and projection lenses on the reader.

Abstract: A microfiche having pinholes instead of lenses. The pinholes and thickness of the fiche are of such dimensions that the device functions as in the manner of a pinhole camera.

Abstract: An optical magnifying device employing fiber optics. When functioning as a microscope, the object plane is defined by and divided into sub-areas by the input termini of many coherent fiber bundles. Each output terminal of each bundle is provided with an objective lens which projects onto an image plane. When used as a microfiche reader, a first magnifying stage is provided, and this (first) image is in turn further magnified in the same manner. Microfiche characters of 2 micron size may be resolved by the entire system.

Abstract: Method for making a microfiche structure consisting of a laminate of an opaque, apertured web sandwiched between two transparent sheets. The transparent material partially extends into each aperture to thereby define, for each aperture, an optical doublet. The laminate may be continuously formed by compression, as by rolls.

Abstract: A combined microfiche camera and projection apparatus. The apparatus includes an objective lens for forming a real image on the input end of a coherent bundle of light fibers (internally reflecting glass fibers). The output end of the bundle is dispersed into a plurality of spaced-apart coherent fiber sub-bundles. The ends of the latter terminate contiguous to the emulsion of a microfiche. A projection screen is spaced from the microfiche. The device functions both to record and to read out.

Abstract: A method of making coherent optical fiber bundles and coherent optical fiber face plates. The method includes the steps of forming a laminated billet by heat and pressure from a plurality of stacked disc modules. Each disc module is defined by two transparent discs, one relatively thick and having one index of refraction and the other relatively thin and having an index of refraction less than the first. The billet is then longitudinally skived to form a veneer strip of indefinite length. The veneer is then coated on one or both faces by transparent sheets having similar optical properties, i.e., different indices of refraction, and may include a light-absorbing or light reflecting layer on one sheet. A second billet is formed and transversely cut to define a fiber optic face plate. A second billet may also be formed and skived to yield a coherent fiber optic bundle.

Abstract: A combined microfiche camera and projection apparatus. The apparatus includes an objective lens for forming a real image on the input end of a coherent bundle of light fibers (internally reflecting glass fibers). The output end of the bundle is dispersed into a plurality of spaced-apart coherent fiber sub-bundles. The ends of the latter terminate contiguous to the emulsion of a microfiche. A projection screen is spaced from the microfiche. The device functions both to record and to read out.

Abstract: A compact imaging apparatus and rear projection display device are described wherein an image of an object is focused on an image area which is displaced and rotated from the object plane. A pair of planar mirrors of predetermined shape are selectively located to fold the image beam from an image device and provide an image of desired orientation on the image area. A compact camera for producing a large image area in a small volume is described and is particularly useful in connection with so-called instantly developed photographic films. A rear projection device is described, having an optical arrangement which confers a high degree of immunity to ambient light. An image beam is projected upwardly against a first mirror, reflected toward a second mirror behind a projection screen, and then reflected forwardly to the projection screen.

Abstract: A microfiche having one surface embossed or molded to define a multiplicity of small lenses (lensettes) integral with the microfiche. Each micro-image is stored directly below a corresponding lensette, thereby assuring optical distance registry between each micro-image and its projection. Lateral optical registry is also realized. In an embodiment, interlensette surface of the microfiche is made opaque to preclude optical cross-talk.