Lens assembly and method of making

Details Lens assembly and method of making Lens assembly and method of making

B - Operations, Transporting

32

B

88/109, 88/115,

B32B 17/10 (2006.01) G02B 1/00 (2006.01) G02B 1/04 (2006.01) G02B 3/08 (2006.01) G02B 19/00 (2006.01) G03B 21/132 (2006.01)

Patent

CA 1057099

ABSTRACT OF THE DISCLOSURE A large area lens assembly suitable for an overhead projector comprises a glass plate bonded to plastic Fresnel lens into a unitary structure. The invention is characterized by dimensional and material limitations which eliminate thermal expansion problems.

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