JPS54134552A - Exposure unit for color picture tube - Google Patents
Exposure unit for color picture tubeInfo
- Publication number
- JPS54134552A JPS54134552A JP4172578A JP4172578A JPS54134552A JP S54134552 A JPS54134552 A JP S54134552A JP 4172578 A JP4172578 A JP 4172578A JP 4172578 A JP4172578 A JP 4172578A JP S54134552 A JPS54134552 A JP S54134552A
- Authority
- JP
- Japan
- Prior art keywords
- correcting
- filter
- side material
- correcting lens
- exposure unit
- 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.)
- Pending
Links
Landscapes
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
PURPOSE: To obtain an exposure unit, where a correcting filter is not used and an improved correcting lens is arranged, or an exposure unit where a correcting filter which is so improved that it can be formed easily is arranged together with a correcting lens.
CONSTITUTION: A box-shaped vessel which has a hole opened on the top face where a panel is put, light source 11 which is arranged at the bottom of this vessel, and correcting lens 12 which is arranged above this light source are provided, and this correcting lens 12 consists of colored glass and absorbs the light needless for exposure at an exposure time and has the shape thick at the center and thin at the circumference. Otherwise, in the unit where an improved correcting filter is arranged, correcting lens 21 consisting of transparent glass and correcting filter 24 which is obtained by causing upper-side material 23, which consists of transparent glass having the same refractive index as lower-side material 22 and is superposed onto lower-side material 22 to make a disc-shaped filter, to adhere onto lower-side material where the colored glass above is used and the shape is thick at the center are arranged successively above light source 25 arranged at the bottom of the vessel.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4172578A JPS54134552A (en) | 1978-04-11 | 1978-04-11 | Exposure unit for color picture tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4172578A JPS54134552A (en) | 1978-04-11 | 1978-04-11 | Exposure unit for color picture tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54134552A true JPS54134552A (en) | 1979-10-19 |
Family
ID=12616387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4172578A Pending JPS54134552A (en) | 1978-04-11 | 1978-04-11 | Exposure unit for color picture tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54134552A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS622428A (en) * | 1985-06-04 | 1987-01-08 | ビデオカラー エス.アー. | Faceplate exposure method and apparatus for formation of screen of color tv receiver |
-
1978
- 1978-04-11 JP JP4172578A patent/JPS54134552A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS622428A (en) * | 1985-06-04 | 1987-01-08 | ビデオカラー エス.アー. | Faceplate exposure method and apparatus for formation of screen of color tv receiver |
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