CA973139A - Headlamp polarizing attachment - Google Patents

Headlamp polarizing attachment

Info

Publication number: CA973139A
Authority: CA; Canada
Prior art keywords: headlamp; polarizing; attachment; polarizing attachment; headlamp polarizing
Prior art date: 1971-06-28
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

Application number

CA145,850A

Other languages

English (en)

Other versions

CA145850S (en

Inventor

Vaito K. Eloranta

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.)

Polaroid Corp

Original Assignee

Polaroid 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.)

1971-06-28

Filing date

1972-06-27

Publication date

1975-08-19

1972-06-27 Application filed by Polaroid Corp filed Critical Polaroid Corp

1975-08-19 Application granted granted Critical

1975-08-19 Publication of CA973139A publication Critical patent/CA973139A/en

Status Expired legal-status Critical Current

Links

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/135—Polarised

Landscapes

Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)
Non-Portable Lighting Devices Or Systems Thereof (AREA)
Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

CA145,850A 1971-06-28 1972-06-27 Headlamp polarizing attachment Expired CA973139A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US15714571A	1971-06-28	1971-06-28

Publications (1)

Publication Number	Publication Date
CA973139A true CA973139A (en)	1975-08-19

Family

ID=22562512

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA145,850A Expired CA973139A (en)	1971-06-28	1972-06-27	Headlamp polarizing attachment

Country Status (7)

Country	Link
US (1)	US3731080A (it)
JP (1)	JPS5530241B2 (it)
CA (1)	CA973139A (it)
DE (1)	DE2231202C2 (it)
FR (1)	FR2143792B1 (it)
GB (1)	GB1368221A (it)
IT (1)	IT958528B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4006377A (en) *	1976-01-12	1977-02-01	General Electric Company	Filter attachment for parabolic reflector lamps
GB2203826A (en) *	1987-04-21	1988-10-26	Edward Hugh Robinson	Light lenses

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2031045A (en) *	1932-12-06	1936-02-18	Sheet Polarizer Company Inc	Means for avoiding glare from automobile headlights
GB486836A (en) *	1936-12-03	1938-06-10	Zeiss Ikon Ag	Improvements in or relating to vehicle lighting
DE718405C (de) *	1940-02-03	1942-03-11	Hugo Schneider Ag	Polarisationsfilter
US2397242A (en) *	1941-02-26	1946-03-26	Polarold Corp	Coating composition
US2810324A (en) *	1954-12-02	1957-10-22	Marks Polarized Corp	Light polarizing illuminating device
US3513305A (en) *	1967-09-05	1970-05-19	Phillip M Joncas	Diffusing screen for a seal beam light
JPS5112956B1 (it) *	1971-03-09	1976-04-23

1971
- 1971-06-28 US US00157145A patent/US3731080A/en not_active Expired - Lifetime
1972
- 1972-06-26 DE DE2231202A patent/DE2231202C2/de not_active Expired
- 1972-06-26 IT IT51162/72A patent/IT958528B/it active
- 1972-06-27 CA CA145,850A patent/CA973139A/en not_active Expired
- 1972-06-27 FR FR7223224A patent/FR2143792B1/fr not_active Expired
- 1972-06-27 GB GB3012772A patent/GB1368221A/en not_active Expired
- 1972-06-28 JP JP6412372A patent/JPS5530241B2/ja not_active Expired

Also Published As

Publication number	Publication date
AU4372472A (en)	1974-01-03
GB1368221A (en)	1974-09-25
FR2143792A1 (it)	1973-02-09
FR2143792B1 (it)	1976-08-06
JPS5530241B2 (it)	1980-08-09
US3731080A (en)	1973-05-01
DE2231202C2 (de)	1984-05-10
JPS4923986A (it)	1974-03-02
IT958528B (it)	1973-10-30
DE2231202A1 (de)	1973-01-11

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