Title:
TRANSMISSION TYPE SCREEN, REAR TYPE PROJECTOR AND METHOD FOR DESIGNING TRANSMISSION TYPE SCREEN
Document Type and Number:
Japanese Patent JP2005274929
Kind Code:
A
Abstract:
To provide a transmission type screen capable of obtaining a projection image of high quality by suppressing not only the generation of blurs or ghost images on a picture but also the generation of glaring.
The transmission type screen 130 provided with a Fresnel lens sheet 132, a lenticular lens 134 and an optical bead sheet 140 is designed on the basis of the values of Gs, Hz and T which are determined under a condition that SI is in a prescribed range when it is defined that the glossiness of the optical bead sheet 140 is Gs (60°), the haze value of the Fresnel lens sheet 132 is Hz, the thickness of the Fresnel lens sheet 132 is T, and the scintillation value of the transmission type screen 130 is SI (=Gs/(T×Hz)).
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Inventors:
SAKAGUCHI MASASHI
Application Number:
JP2004087605A
Publication Date:
October 06, 2005
Filing Date:
March 24, 2004
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G02B3/08; G03B21/00; G03B21/10; G03B21/14; G03B21/62; G03B21/625; H04N5/74; H04N9/31; (IPC1-7): G03B21/62; G02B3/08; G03B21/10
Attorney, Agent or Firm:
Masahiko Ueyanagi
Fujitsuna Hideyoshi
Osamu Suzawa
Fujitsuna Hideyoshi
Osamu Suzawa