FLUORESCENT SCREEN

• Main Authors: MURATA YASUSHI, MATSUI FUMIO, TANAKA SATORU
• Format: Patent
• Language: English
• Published: 09.01.1991
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

PURPOSE:To increase fluorescence quantity by constituting the screen so that exciting light may be made incident only on the surface in one direction of a columnar fluorescent member and the fluorescence may be emitted only from the surface of the other direction of the columnar fluorescent member. CONSTITUTION:The screen is constituted of a lenticular transparent substrate 10, a 1st selection film 11, the fluorescent member 12 and a 2nd selection film 13. In such the case, the lenticular lens substrate 10 is made of the transparent plastic material and its one surface is formed in the shape of a lenticular lens. The 1st selection film 11 has characteristic that it reflects the exciting light made incident from the flat surface side of the substrate 10 and selective characteristic that it transmits the fluorescence made incident from the same direction to the substrate 10. The columnar fluorescent member 12 is formed of transparent synthetic resin in which phosphor is contained and dispersed and its cross-sectional shape is triangular. The 2nd selection film 13 has characteristic that is transmits the exciting light made incident from the flat surface side of the substrate 10 and characteristic that it reflects the fluorescence made incident from an opposite direction. By thus constituting the screen, the fluorescence quantity is increased.