JPS62118304A - フレネル状レンズ - Google Patents

フレネル状レンズ

Info

Publication number
JPS62118304A
JPS62118304A JP25836885A JP25836885A JPS62118304A JP S62118304 A JPS62118304 A JP S62118304A JP 25836885 A JP25836885 A JP 25836885A JP 25836885 A JP25836885 A JP 25836885A JP S62118304 A JPS62118304 A JP S62118304A
Authority
JP
Japan
Prior art keywords
optical
fresnel lens
zone
spherical
wedge
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
Application number
JP25836885A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0554081B2 (da
Inventor
Shunsui Kawasaki
川崎　春水
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP25836885A priority Critical patent/JPS62118304A/ja
Publication of JPS62118304A publication Critical patent/JPS62118304A/ja
Publication of JPH0554081B2 publication Critical patent/JPH0554081B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Lenses (AREA)
JP25836885A 1985-11-18 1985-11-18 フレネル状レンズ Granted JPS62118304A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25836885A JPS62118304A (ja) 1985-11-18 1985-11-18 フレネル状レンズ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25836885A JPS62118304A (ja) 1985-11-18 1985-11-18 フレネル状レンズ

Publications (2)

Publication Number Publication Date
JPS62118304A true JPS62118304A (ja) 1987-05-29
JPH0554081B2 JPH0554081B2 (da) 1993-08-11

Family

ID=17319271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25836885A Granted JPS62118304A (ja) 1985-11-18 1985-11-18 フレネル状レンズ

Country Status (1)

Country Link
JP (1) JPS62118304A (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6426703U (da) * 1987-08-07 1989-02-15
US5160192A (en) * 1988-03-16 1992-11-03 Asahi Kogaku Kogyo Kabushiki Kaisha Illuminating instrument
US5161057A (en) * 1988-09-12 1992-11-03 Johnson Kenneth C Dispersion-compensated fresnel lens

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS578441A (en) * 1980-06-18 1982-01-16 Matsushita Electric Ind Co Ltd Production of ion selective electrode

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS578441A (en) * 1980-06-18 1982-01-16 Matsushita Electric Ind Co Ltd Production of ion selective electrode

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6426703U (da) * 1987-08-07 1989-02-15
US5160192A (en) * 1988-03-16 1992-11-03 Asahi Kogaku Kogyo Kabushiki Kaisha Illuminating instrument
US5161057A (en) * 1988-09-12 1992-11-03 Johnson Kenneth C Dispersion-compensated fresnel lens

Also Published As

Publication number Publication date
JPH0554081B2 (da) 1993-08-11

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees