Title:
PROJECTION DEVICE
Document Type and Number:
Japanese Patent JP3538128
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a projection device which unnecessitates the adjustment between reflective optical elements to each other after assembling the reflective optical elements which constitute an image formation optical system.
SOLUTION: All of optical elements constituting a projection optical system are constituted by reflection mirrors 1, 2, 3 and 4, the relative positional relation of all of the reflection mirrors 1, 2, 3 and 4 is fixed, the reflection mirrors 1, 2, 3 and 4 are disposed on a casing 6, the casing 6 is mobilized while fixing the relative positional relation of the reflection mirrors 1, 2, 3 and 4 and the position of the whole of projective optical system 10 with respect to the picture formation element 5 is adjusted.
Inventors:
Furuichi, Kunitaka
Ogawa, Jun
Ogawa, Jun
Application Number:
JP2000240164A
Publication Date:
June 14, 2004
Filing Date:
August 08, 2000
Export Citation:
Assignee:
NEC VIEWTECHNOLOGY LTD
International Classes:
G02F1/13; G02B27/18; G02F1/1335; G03B21/00; G03B21/28; G09F9/00; H04N5/74; (IPC1-7): G02B27/18; G02F1/13; G02F1/1335; G03B21/00; G03B21/28; G09F9/00; H04N5/74
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