Projection-type image display apparatus having a planar...

Details Projection-type image display apparatus having a planar... Projection-type image display apparatus having a planar...

2009-07-24

2011-11-29

Le, Que T (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S216000

Reexamination Certificate

active

08067721

ABSTRACT:
A projection-type image display apparatus includes a first reflecting optical element and a second reflecting optical element that are retained on a base. A base-side first positioning unit and a base-side second positioning unit are formed integrally with the base. The base-side first positioning unit abuts against the first reflecting optical element to define a position of the first reflecting optical element. The base-side second positioning unit abuts against the second reflecting optical element to define a position of the second reflecting optical element.

REFERENCES:
patent: 6752500 (2004-06-01), Yoshii et al.
patent: 3643810 (2005-04-01), None

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