Title:
投射型画像表示装置
Document Type and Number:
Japanese Patent JP5388394
Kind Code:
B2
Abstract:
This invention discloses a projection type image display apparatus that includes a color separation optical system which separates illumination light into a plurality of chromatic rays of light, a plurality of image forming panels illuminated with the plurality of chromatic rays of light, respectively, a color synthesizing optical system which synthesizes rays of light emitted from the plurality of image forming panels illuminated therewith, and a plurality of cooling units which cool areas around the plurality of image forming panels, respectively, in which a cooling capacity (for example, specifications of a cooling unit or type of air-blowing fan) of at least one of the plurality of cooling units is different from those of the other cooling units. Thereby, cooling can be carried out most suitably for each color optical path, and cooling that is superior in efficiency and in balance can be carried out.
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Inventors:
Takehiro Koyama
Kiyohide Wada
Kiyohide Wada
Application Number:
JP2001165524A
Publication Date:
January 15, 2014
Filing Date:
May 31, 2001
Export Citation:
Assignee:
Canon Inc
International Classes:
G03B21/00; G03B33/12; G02B27/28; G02F1/13; G02F1/133; G02F1/1335; G03B21/16; G09F9/00; H04N5/74; H04N9/31; H05K7/20
Domestic Patent References:
| JP2000347292A | ||||
| JP460533A | ||||
| JP6194621A | ||||
| JP11231418A | ||||
| JP1031425A | ||||
| JP6148594A | ||||
| JP2000221599A | ||||
| JP5648770A | ||||
| JP2000352708A | ||||
| JP200192015A |
Attorney, Agent or Firm:
Ryosuke Fujimoto
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