JPS54134552A - Exposure unit for color picture tube - Google Patents

Exposure unit for color picture tube

Info

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
Application number
JP4172578A
Other languages
Japanese (ja)
Inventor
Shingo Watabe
Katsuyo Nakagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4172578A priority Critical patent/JPS54134552A/en
Publication of JPS54134552A publication Critical patent/JPS54134552A/en
Pending legal-status Critical Current

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
JP4172578A 1978-04-11 1978-04-11 Exposure unit for color picture tube Pending JPS54134552A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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