JPH0578010B2 - - Google Patents

Info

Publication number
JPH0578010B2
JPH0578010B2 JP58180250A JP18025083A JPH0578010B2 JP H0578010 B2 JPH0578010 B2 JP H0578010B2 JP 58180250 A JP58180250 A JP 58180250A JP 18025083 A JP18025083 A JP 18025083A JP H0578010 B2 JPH0578010 B2 JP H0578010B2
Authority
JP
Japan
Prior art keywords
lens
cathode ray
ray tube
aspherical
projection television
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.)
Expired - Lifetime
Application number
JP58180250A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6073514A (ja
Inventor
Kyohei Fukuda
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP18025083A priority Critical patent/JPS6073514A/ja
Publication of JPS6073514A publication Critical patent/JPS6073514A/ja
Publication of JPH0578010B2 publication Critical patent/JPH0578010B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Lenses (AREA)
JP18025083A 1983-09-30 1983-09-30 プロジェクションテレビ用レンズ Granted JPS6073514A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18025083A JPS6073514A (ja) 1983-09-30 1983-09-30 プロジェクションテレビ用レンズ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18025083A JPS6073514A (ja) 1983-09-30 1983-09-30 プロジェクションテレビ用レンズ

Publications (2)

Publication Number Publication Date
JPS6073514A JPS6073514A (ja) 1985-04-25
JPH0578010B2 true JPH0578010B2 (US20030220297A1-20031127-C00033.png) 1993-10-27

Family

ID=16079982

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18025083A Granted JPS6073514A (ja) 1983-09-30 1983-09-30 プロジェクションテレビ用レンズ

Country Status (1)

Country Link
JP (1) JPS6073514A (US20030220297A1-20031127-C00033.png)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727452Y2 (ja) * 1985-08-06 1995-06-21 パイオニア株式会社 プロジェクションテレビにおける投射装置
JPS6271915A (ja) * 1985-09-25 1987-04-02 Hitachi Ltd 投写形テレビ用光学系

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB593514A (en) * 1944-10-17 1947-10-20 John Henry Jeffree Improvements in or relating to lens systems for wide-aperture anastigmatic objectives
JPS4995533A (US20030220297A1-20031127-C00033.png) * 1972-10-20 1974-09-10
JPS54155818A (en) * 1978-05-29 1979-12-08 Kawai Musical Instr Mfg Co Electronic musical instrument
JPS5734515A (en) * 1980-08-09 1982-02-24 Minolta Camera Co Ltd Refracting index type optical system for video projector
JPS57108818A (en) * 1980-12-26 1982-07-07 Nippon Kogaku Kk <Nikon> Projection lens
JPS57177115A (en) * 1981-04-23 1982-10-30 Jihei Nakagawa Projection lens device
JPS58125007A (ja) * 1982-01-20 1983-07-25 Matsushita Electric Ind Co Ltd 投影レンズ
JPS58139111A (ja) * 1982-02-12 1983-08-18 Minolta Camera Co Ltd ビデオプロジエクタ−用屈折型光学系
JPS58198017A (ja) * 1982-05-15 1983-11-17 Hitachi Ltd 投影レンズ
JPS59133517A (ja) * 1983-01-21 1984-07-31 Nippon Kogaku Kk <Nikon> 投影レンズ

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB593514A (en) * 1944-10-17 1947-10-20 John Henry Jeffree Improvements in or relating to lens systems for wide-aperture anastigmatic objectives
JPS4995533A (US20030220297A1-20031127-C00033.png) * 1972-10-20 1974-09-10
JPS54155818A (en) * 1978-05-29 1979-12-08 Kawai Musical Instr Mfg Co Electronic musical instrument
JPS5734515A (en) * 1980-08-09 1982-02-24 Minolta Camera Co Ltd Refracting index type optical system for video projector
JPS57108818A (en) * 1980-12-26 1982-07-07 Nippon Kogaku Kk <Nikon> Projection lens
JPS57177115A (en) * 1981-04-23 1982-10-30 Jihei Nakagawa Projection lens device
JPS58125007A (ja) * 1982-01-20 1983-07-25 Matsushita Electric Ind Co Ltd 投影レンズ
JPS58139111A (ja) * 1982-02-12 1983-08-18 Minolta Camera Co Ltd ビデオプロジエクタ−用屈折型光学系
JPS58198017A (ja) * 1982-05-15 1983-11-17 Hitachi Ltd 投影レンズ
JPS59133517A (ja) * 1983-01-21 1984-07-31 Nippon Kogaku Kk <Nikon> 投影レンズ

Also Published As

Publication number Publication date
JPS6073514A (ja) 1985-04-25

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