초록 ▼

An erect optical imaging system for copying apparatus and method of producing the same is provided. A first pair of array sets of thick object lenses is optically aligned with a second pair of array sets of thick relay lenses to provide a scan line of a plurality of optical paths across an object su

An erect optical imaging system for copying apparatus and method of producing the same is provided. A first pair of array sets of thick object lenses is optically aligned with a second pair of array sets of thick relay lenses to provide a scan line of a plurality of optical paths across an object surface. The refractive powers of the first set of lenses produce a real image in a space between the lens sets and an erect image on an image surface. Each array set comprises two parallel but offset rows of lens elements to provide an overlapping field angle. The use of the thick lenses helps eliminate vignetting problems. Spherical aberration and field curvature is controlled by minimizing the aperture opening of each set of lenses to 4mm2. The lenses can be made by either molding plastic or by individually grinding square glass bars. Demagnification can be achieved with the use of spherical optical path compensators.

대표청구항 ▼

An erect optical imaging system for copying apparatus forming optical paths for transmitting images from an object to an image surface comprising; means for supporting an original object to be copied; a first pair of array sets of object lenses having respective thicknesses along their optical axes

An erect optical imaging system for copying apparatus forming optical paths for transmitting images from an object to an image surface comprising; means for supporting an original object to be copied; a first pair of array sets of object lenses having respective thicknesses along their optical axes greater than the radius of curvature of their surface on the object side, each array set offset from the other to provide an overlapping field of view with the other array set, and a second pair of array sets of relay lenses having at least the same thickness as the first pair and respectively juxtaposed relative to the first pair of array sets of object lenses to form a plurality of optical paths for collectively transmitting a combined image of an original object positioned to extend beyond the field angle of any one optical path, and means for providing an image surface, the refractive power of the object lenses producing a real image directly in the space between the object lens and the relay lens, and the refractive power of the relay lenses producing an erect image on the image surface.