GB1557573A - Lightsensitive device - Google Patents

Lightsensitive device

Info

Publication number
GB1557573A
GB1557573A GB4654976A GB4654976A GB1557573A GB 1557573 A GB1557573 A GB 1557573A GB 4654976 A GB4654976 A GB 4654976A GB 4654976 A GB4654976 A GB 4654976A GB 1557573 A GB1557573 A GB 1557573A
Authority
GB
United Kingdom
Prior art keywords
lightsensitive device
lightsensitive
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
Application number
GB4654976A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB4654976A priority Critical patent/GB1557573A/en
Publication of GB1557573A publication Critical patent/GB1557573A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/30—Indexing codes relating to the vehicle environment
    • B60Q2300/31—Atmospheric conditions
    • B60Q2300/314—Ambient light
GB4654976A 1976-11-09 1976-11-09 Lightsensitive device Expired GB1557573A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4654976A GB1557573A (en) 1976-11-09 1976-11-09 Lightsensitive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4654976A GB1557573A (en) 1976-11-09 1976-11-09 Lightsensitive device

Publications (1)

Publication Number Publication Date
GB1557573A true GB1557573A (en) 1979-12-12

Family

ID=10441685

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4654976A Expired GB1557573A (en) 1976-11-09 1976-11-09 Lightsensitive device

Country Status (1)

Country Link
GB (1) GB1557573A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203240A (en) * 1984-10-18 1988-10-12 Sean Noone Photoelectric controller
US5003288A (en) * 1988-10-25 1991-03-26 Nartron Corporation Ambient light sensing method and apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203240A (en) * 1984-10-18 1988-10-12 Sean Noone Photoelectric controller
GB2203240B (en) * 1984-10-18 1989-06-07 Sean Noone A photoelectric control unit
US5003288A (en) * 1988-10-25 1991-03-26 Nartron Corporation Ambient light sensing method and apparatus

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee