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| Number | Title | Issue Date |
| 5661597 | Image deflection apparatus An image stabilizer has, in succession from the object side, an objective lens group having at least positive refractive power, variable angle prism having its vertical angle variable, and optical prism, and which satisfies the following condition: -20 | 08/26/1997 |
| 5576889 | Real-image zoom finder optical system A finder optical system of the present invention includes from the object side an objective lens system of a positive refractive power and an eyepiece system of a positive refractive power. The objective lens system includes from the object side a first l... | 11/19/1996 |
| 5434841 | Plural-beam optical head A plural beam optical head is constituted by an optical system for imaging a plurality of light beams onto an optical information recording medium, a double-refractive crystal prism and a sensor. The plurality of light beams obtained from the optical info... | 07/18/1995 |
| 5192960 | Glasses for stereoscopic viewing A stereoscopic glasses of a construction, in which left and right lenses are formed into a single integral body, which is fitted into a lens frame and maintained in it.... | 03/09/1993 |
| 5182671 | Variable magnification optical system having a capability of stabilizing the image An image stabilization optical system for use in the variable magnification optical system having a first lens group followed rearwardly by a zoom section comprising a plurality of lens groups is disclosed, wherein as at least one lens group in the zoom s... | 01/26/1993 |
| 5132847 | Headlight glass for a motor vehicle, a method of making a mold die for manufacturing such a glass, and method of manufacturing the glass The invention relates to a motor vehicle headlight glass suitable for being mounted in a position where it slopes relative to a vertical plane, and being of the type that comprises a plurality of stripes for the purpose of spreading the light emitted by t... | 07/21/1992 |
| 5095326 | Kepler-type erect image viewfinder and erecting prism A Kepler-type erect image viewfinder includes a first prism having an emergent surface being formed of a spherical or an aspherical surface and having a positive power. A second prism has an incident surface being formed of a spherical or aspherical surfa... | 03/10/1992 |
| 4707055 | Scanning apparatus A scanner including a source of coherent radiation, a radial hologon, a fθ lens and a target. Between the light source and the hologon there are means for forming radiation from the source into a collimated beam having an oblong cross-sectional shape and... | 11/17/1987 |
| 4436260 | Optical scanner for use in confined areas An optical scanner for use in a confined or restricted location having a movable prism assembly which utilizes cylindrical or spherical mating joints between a pair of flat input/output surfaces. The mating surfaces are spaced less than one wavelength apa... | 03/13/1984 |
| 4059343 | Prismatic anamorphic system for optical correlators A prismatic anamorphic system for use with an optical correlator. The prismatic anamorphic system incorporates four rotatable prisms arranged within the optical correlator thereby permitting correlator operation about unity magnification with no image rot... | 11/22/1977 |
| 4017160 | Continuously variable anamorphic lens A continuously variable anamorphic lens containing two sets of four elements between which is placed two achromatized prisms. The anamorphic magnification is varied by the tilting of the prisms.... | 04/12/1977 |
