Optical: systems and elements – Single channel simultaneously to or from plural channels – By surface composed of lenticular elements
Patent
1996-12-20
1998-09-22
Font, Frank G.
Optical: systems and elements
Single channel simultaneously to or from plural channels
By surface composed of lenticular elements
359623, 359625, 359619, G02B 2710
Patent
active
058123229
ABSTRACT:
A lenslet array system for imaging an associated object onto a final image plane includes (i) a first lens assembly including a field limiting mask and a first lenslet array having an associated image plane, (ii) a second assembly including a rear lenslet array, and (iii) a middle lenslet array located between the first and said rear lenslet array. The first lenslet array accepts a full field of view subtends by the associated object and forms a plurality of image sections of the associated object on an intermediate image plane. The first lenslet array includes a plurality of positive power lenslets, each of the plurality of lenslets having a focal length f.sub.1 and accepting a unique segment of the full field of view subtended by the associated object. These segments of the full field of view together comprise the full field of view, and each of the lenslets forms one image section corresponding to its segment of the full field of view. The rear lenslet array has a plurality of positive power lenslets. Each of the lenslets of the second lenslet array (a) reimages one of the image sections located at the intermediate image plane and creates an inverted image of the image section on the final image surface, and (b) together with other lenslets of the rear lenslet array creates an image of the associated object.
REFERENCES:
patent: 4632522 (1986-12-01), Ishitani
patent: 4988188 (1991-01-01), Ohta
patent: 5325381 (1994-06-01), Paoli
patent: 5418583 (1995-05-01), Masumoto
patent: 5497270 (1996-03-01), Rud
Eastman Kodak Company
Font Frank G.
Ratliff Reginald A.
Short Svetlana Z.
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