Title:
PROJECTION TYPE DISPLAY DEVICE AND INFORMATION STORAGE MEDIA
Document Type and Number:
Japanese Patent JP3630015
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a projection type display device having an antidazzle function to decrease an incident amount of an image light to eyes of a person positioning in the display area by controlling brightness of the image light at an area where the person is located in the display area.
SOLUTION: An image light is projected in a display area 3 on a screen 4 from a projector 1, a projection type display device, arranged in the front. A person 5 being a presenter exists in this display area 3 to indicate the predetermined position and executes the presentation looking the audience 7. The projector 1 is provided with a CCD camera being an image pick-up means 2 and a position of the person on a display position is detected. According to the detected result of the position of the person, an image light of the image brightness adjusting area 6 is set to a black level. Consequently, an incident amount to eyes of the person 5 of image light projected from the projector 1 is reduced and the person 5 does not feel dazzle by the image light.
Inventors:
Kazunori Hiramatsu
Application Number:
JP11363099A
Publication Date:
March 16, 2005
Filing Date:
April 21, 1999
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
H04N5/74; G03B21/00; G09F9/00; G09G3/20; G09G3/34; G09G5/00; (IPC1-7): G03B21/00; G09F9/00; G09G3/20; G09G3/34; G09G5/00; H04N5/74
Domestic Patent References:
| JP6347748A | ||||
| JP5008556U | ||||
| JP3094888U | ||||
| JP2000194392A |
Attorney, Agent or Firm:
Masahiko Ueyanagi
Osamu Suzawa
Osamu Suzawa