Title:
【発明の名称】三次元の静止画像又は動画像の再生用改良型スクリーン及びその製造方法
Document Type and Number:
Japanese Patent JPH04500415
Kind Code:
A
Abstract:
The screen is characterized in that the rasters of cylindrical lenses are optically convergent and/or divergent; both rasters of cylindrical lenses are formed of semicircular cross-section cylinders which are juxtaposed in the axial direction and are arranged on one or both faces of the screen, verifying that a) the angle alpha between both rasters is equal to 90 DEG , the raster of vertical cylindrical lenses being then covered by a transparent substance having a refraction index n'; or b) this angle alpha is smaller than 90 DEG ; or c) this angle alpha is smaller than 90 DEG and the rasters of cylindrical lenses are covered with a substance having a refraction index n". The process is comprised of: a) the preparation of a first mould; b) the production of a counter-mould; c) the production of a definitive mould; and d) compression moulding of rasters with the definitive mould.
Inventors:
Dominguez Montes, Juan
Application Number:
JP50660290A
Publication Date:
January 23, 1992
Filing Date:
April 23, 1990
Export Citation:
Assignee:
Dominguez Montes, Juan
International Classes:
G03B21/60; G03B21/62; G03B35/20; G03B35/24; H04N13/00; (IPC1-7): G03B21/62; G03B35/20; G03B35/24
Domestic Patent References:
| JP88009952Y | ||||
| JPS632031A | 1988-01-07 | |||
| JPS61114233A | 1986-05-31 | |||
| JPS61116338A | 1986-06-03 |
Foreign References:
| US4078854A | 1978-03-14 |
Attorney, Agent or Firm:
Aoki Akira (4 outside)