Lens screen

Details Lens screen Lens screen

1990-06-01

1991-08-20

Wintercorn, Richard A.

Photocopying

Including fiber optics

355 46, G03B 2700, G03B 2744

Patent

active

050418629

ABSTRACT:
The invention is directed to a lens screen wherein lens elements are inserted into discrete openings of a carrier. The openings are defined by a plurality of interconnected struts so that a strut is disposed between each two mutually adjacent ones of the openings. The lens elements have two optically effective surfaces which are dissimilar in size and the lens elements are tapered in the region of the lens material which is not optically utilized on at least two opposite-lying faces. The struts of the carrier support the lens elements at these tapered regions and provide support from below as well as laterally. The width of the struts is dimensioned so that they do not project beyond the free space formed by the tapers. In this way, the condition is obtained that the lens elements are arranged so as to lie tightly against each other with an optically effective surface and yet receive mechanical support from the struts of the carrier.

REFERENCES:
patent: 3495512 (1970-02-01), Vaughan
patent: 3572925 (1971-03-01), Ables
patent: 3580675 (1971-05-01), Heiber et al.
patent: 3613532 (1971-10-01), Wildhaber
patent: 4168900 (1979-09-01), Adachi
patent: 4275962 (1981-06-01), Midorikawa et al.
patent: 4331380 (1982-05-01), Rees et al.
patent: 4417809 (1983-11-01), Notzel et al.
patent: 4462662 (1984-07-01), Lama
patent: 4550979 (1985-11-01), Meier

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