Optical member and process of producing the same

Details Optical member and process of producing the same Optical member and process of producing the same

2008-07-22

2008-07-22

Lee, Diane I. (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

C359S453000, C359S456000, C359S460000, C359S743000, C264S002500

Reexamination Certificate

active

07403334

ABSTRACT:
The present invention provides an optical member having excellent anti-reflection properties, capable of being produced inexpensively as compared with conventional optical members having anti-reflection properties and of being mass-produced with quality kept constant. An optical member1has a plane of incidence3and a plane of emergence5. The plane of emergence5has, as an optical element, prisms2by which the optical path of incident light (see symbol X) is changed. The plane of incidence3has a plurality of minute concavities4(see FIG.2) by which reflection of incident light is prevented.

REFERENCES:
patent: 3718078 (1973-02-01), Plummer
patent: 5005945 (1991-04-01), van de Ven
patent: 5410006 (1995-04-01), Tachibana et al.
patent: 01-298301 (1989-12-01), None
patent: 03-220542 (1991-09-01), None
patent: 2000-035617 (2000-02-01), None
patent: 2002-040210 (2002-02-01), None
patent: 2002-169225 (2002-06-01), None
patent: 2002-267816 (2002-09-01), None
patent: 2003-043203 (2003-02-01), None

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