JPS54115023A - Display unit - Google Patents
Display unitInfo
- Publication number
- JPS54115023A JPS54115023A JP2236378A JP2236378A JPS54115023A JP S54115023 A JPS54115023 A JP S54115023A JP 2236378 A JP2236378 A JP 2236378A JP 2236378 A JP2236378 A JP 2236378A JP S54115023 A JPS54115023 A JP S54115023A
- Authority
- JP
- Japan
- Prior art keywords
- fine stripes
- plane
- receiving tube
- plate
- light emission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To establish suitable color picture, by providing the black fine stripes the same as the profile of light emission region of the face of a receiving tube in front of the receiving tube, and taking the transparent scatter plane between the fine stripes and the buffer optical system.
CONSTITUTION: The face 2 is covered with the transparent type scatter plate 8 having the same shape window 9 as the light emission region 2a of a receiving tube. Black paint is coated along the inner edge of the plate 8, forming the fine stripes 10 and constituting the buffer video inner edge. The width of fine stripes is around 1.5 mm for a 20 inch receiving tube. Further, in closely contacting the plate 8 on the plane 2, the straight line tying the end of the fluorescent substance film 6 and the inner edge of the fine stripes 10 makes an angle θ(2' to 4') to the normal line of the plane 2, so that the non-light emission region is hidden with the plate 8 and the fine stripes 10 at a suitable observing distace. Next, the box 3 made of transparent plates 3 is attached on the plane 2. Frennel convex lens 11 is laminated, further it is fixed on the case 4, and external frame 13 is attached. With this construction, the quality of picture can be improved more.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2236378A JPS54115023A (en) | 1978-02-28 | 1978-02-28 | Display unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2236378A JPS54115023A (en) | 1978-02-28 | 1978-02-28 | Display unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54115023A true JPS54115023A (en) | 1979-09-07 |
JPS6158075B2 JPS6158075B2 (en) | 1986-12-10 |
Family
ID=12080534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2236378A Granted JPS54115023A (en) | 1978-02-28 | 1978-02-28 | Display unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54115023A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5387948A (en) * | 1993-05-03 | 1995-02-07 | North American Philips Corporation | Method and apparatus for reducing scattered light in projection television tubes |
-
1978
- 1978-02-28 JP JP2236378A patent/JPS54115023A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5387948A (en) * | 1993-05-03 | 1995-02-07 | North American Philips Corporation | Method and apparatus for reducing scattered light in projection television tubes |
Also Published As
Publication number | Publication date |
---|---|
JPS6158075B2 (en) | 1986-12-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1288708A4 (en) | Back face transmission screen | |
EP0511721A3 (en) | Front projection screen with reflected light concentrating lens array | |
GB2250133B (en) | Color cathode ray tube with selective light absorption film | |
JPS56117226A (en) | Transmissive projection screen | |
TW372282B (en) | Lenticular lens sheet, display front plate and transmission type projection screen | |
JPS52107770A (en) | Color picture tube | |
JPS54115023A (en) | Display unit | |
GB2022861A (en) | Rear Projection Screen | |
JPS5683705A (en) | Projector | |
GB1008025A (en) | Optical parallax corrector | |
JPS54111218A (en) | Image pickup unit | |
CA2049491A1 (en) | Projection cathode-ray tube with uniform optical multiple interference film | |
JPS5689733A (en) | Data inprinting mechanism of camera | |
JPS55141045A (en) | Beam index system color cathode-ray tube | |
JPS54104238A (en) | Display unit | |
JPS5470062A (en) | Projection type image display device | |
JPS57115748A (en) | Color picture tube | |
SU620032A1 (en) | Cinema-tv projector with optical matching of image | |
JPS55166853A (en) | Prevention of mirror reflection in picture tube | |
FR2435875A1 (en) | Colour picture projection system - has three CRTs, one for each primary colour, with focussing lens before each phosphor screen | |
JPS5334459A (en) | Color cathode ray tube | |
JPS54118730A (en) | Display unit | |
JPS55141044A (en) | Projection type television picture tube | |
JPS57180861A (en) | Cathode-ray tube for picture projection | |
JPS5339826A (en) | Transition type television display unit |