Optical system and optical apparatus having the same

Details Optical system and optical apparatus having the same Optical system and optical apparatus having the same

2008-09-04

2009-12-01

Collins, Darryl J (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

Reexamination Certificate

active

07626772

ABSTRACT:
An optical system includes a first lens with a functional film having film hardness of equal to or less than H formed on at least on one surface thereof, and a second lens located opposite the surface with the functional film of the first lens and having a diameter larger than that of the surface with the functional film, wherein the first lens and the second lens are in marginal contact with each other.

REFERENCES:
patent: 06-003501 (1994-01-01), None
patent: 2004-302112 (2004-10-01), None
patent: 2005-157119 (2005-06-01), None
patent: 2006-010831 (2006-01-01), None
Applied Optics, vol. 25, No. 24, pp. 4562-4567 (1986).

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