JPS52143847A - Optical lens - Google Patents

Optical lens

Info

Publication number
JPS52143847A
JPS52143847A JP6158176A JP6158176A JPS52143847A JP S52143847 A JPS52143847 A JP S52143847A JP 6158176 A JP6158176 A JP 6158176A JP 6158176 A JP6158176 A JP 6158176A JP S52143847 A JPS52143847 A JP S52143847A
Authority
JP
Japan
Prior art keywords
optical lens
provding
render
contrast
improve
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
JP6158176A
Other languages
Japanese (ja)
Inventor
Hiroo Kobayashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6158176A priority Critical patent/JPS52143847A/en
Publication of JPS52143847A publication Critical patent/JPS52143847A/en
Pending legal-status Critical Current

Links

Landscapes

  • Solid State Image Pick-Up Elements (AREA)

Abstract

PURPOSE: To improve the contrast by provding a photo absorbing film at a part of the Fresnel lens, etc. which does not render the optical performance.
COPYRIGHT: (C)1977,JPO&Japio
JP6158176A 1976-05-26 1976-05-26 Optical lens Pending JPS52143847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6158176A JPS52143847A (en) 1976-05-26 1976-05-26 Optical lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6158176A JPS52143847A (en) 1976-05-26 1976-05-26 Optical lens

Publications (1)

Publication Number Publication Date
JPS52143847A true JPS52143847A (en) 1977-11-30

Family

ID=13175230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6158176A Pending JPS52143847A (en) 1976-05-26 1976-05-26 Optical lens

Country Status (1)

Country Link
JP (1) JPS52143847A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61130903A (en) * 1984-11-30 1986-06-18 Hitachi Ltd Fresnel lens and its production
JPS62251702A (en) * 1986-04-25 1987-11-02 Toppan Printing Co Ltd Production of fresnel plate having light absorbing layer
JPS62251701A (en) * 1986-04-25 1987-11-02 Toppan Printing Co Ltd Production of fresnel plate having light absorbing layer
JPS63125802U (en) * 1987-02-09 1988-08-17
US7239444B2 (en) 2003-09-29 2007-07-03 Konica Minolta Holdings, Inc. Display front plane, display lenticular lens, and display fresnel lens
JP2017129753A (en) * 2016-01-20 2017-07-27 パナソニックＩｐマネジメント株式会社 Fresnel lens and head-up display

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922770A (en) * 1972-06-22 1974-02-28
JPS5016549A (en) * 1973-05-02 1975-02-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922770A (en) * 1972-06-22 1974-02-28
JPS5016549A (en) * 1973-05-02 1975-02-21

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61130903A (en) * 1984-11-30 1986-06-18 Hitachi Ltd Fresnel lens and its production
JPH0525081B2 (en) * 1984-11-30 1993-04-09 Hitachi Ltd
JPS62251702A (en) * 1986-04-25 1987-11-02 Toppan Printing Co Ltd Production of fresnel plate having light absorbing layer
JPS62251701A (en) * 1986-04-25 1987-11-02 Toppan Printing Co Ltd Production of fresnel plate having light absorbing layer
JPS63125802U (en) * 1987-02-09 1988-08-17
US7239444B2 (en) 2003-09-29 2007-07-03 Konica Minolta Holdings, Inc. Display front plane, display lenticular lens, and display fresnel lens
JP2017129753A (en) * 2016-01-20 2017-07-27 パナソニックＩｐマネジメント株式会社 Fresnel lens and head-up display
WO2017126353A1 (en) * 2016-01-20 2017-07-27 パナソニックＩｐマネジメント株式会社 Fresnel lens, fresnel lens unit, and head-up display
US10670780B2 (en) 2016-01-20 2020-06-02 Panasonic Intellectual Property Management Co., Ltd. Fresnel lens, Fresnel lens unit, and head-up display

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