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GB543663A - Improvements in adjustable reflectors for electric lamps - Google Patents

Improvements in adjustable reflectors for electric lamps

Info

Publication number
GB543663A
GB543663AGB1723640AGB1723640AGB543663AGB 543663 AGB543663 AGB 543663AGB 1723640 AGB1723640 AGB 1723640AGB 1723640 AGB1723640 AGB 1723640AGB 543663 AGB543663 AGB 543663A
Authority
GB
United Kingdom
Prior art keywords
reflectors
light source
electric lamps
prevent
part cylindrical
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
GB1723640A
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.)
ROBERT RICHARD HOARE
Original Assignee
ROBERT RICHARD HOARE
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 ROBERT RICHARD HOAREfiledCriticalROBERT RICHARD HOARE
Priority to GB1723640ApriorityCriticalpatent/GB543663A/en
Publication of GB543663ApublicationCriticalpatent/GB543663A/en
Expiredlegal-statusCriticalCurrent

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Classifications

Landscapes

Abstract

543,663. Reflectors, for electric lamps and heaters. HOARE, R. R. Dec. 4,1940. Nos. 17236/40 and 946/41. [Classes 39 (iii) and 75 (ii)] A reflecting system for electric lamps or heaters comprises a part cylindrical reflector a arranged behind the light source and side reflectors c pivoted so as to allow rotation either in the same or opposite directions about the light source. The reflectors c may be straight or parabolic about a focus concentric with the light source or foci on the surface of the light source, if the light source is a frosted or fluorescent tubular lamp. Reflectors may be provided to prevent the escape of light between the reflectors a, c, or the reflectors c may be formed with part cylindrical upper portions b which can slide one over the other. Additional reflectors e which may have blackened portions may be provided to prevent the rays from spreading radially. Typical dimensions of a parabolic reflector are given.
GB1723640A1940-12-041940-12-04Improvements in adjustable reflectors for electric lampsExpiredGB543663A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
GB1723640AGB543663A (en)1940-12-041940-12-04Improvements in adjustable reflectors for electric lamps

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
GB1723640AGB543663A (en)1940-12-041940-12-04Improvements in adjustable reflectors for electric lamps

Publications (1)

Publication NumberPublication Date
GB543663Atrue GB543663A (en)1942-03-06

Family

ID=10091635

Family Applications (1)

Application NumberTitlePriority DateFiling Date
GB1723640AExpiredGB543663A (en)1940-12-041940-12-04Improvements in adjustable reflectors for electric lamps

Country Status (1)

CountryLink
GB (1)GB543663A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US3245458A (en)*1962-12-111966-04-12Hupp CorpRadiant gas burner
US3268718A (en)*1963-05-091966-08-23Scm CorpLight reflector assembly
DE2634206A1 (en)*1976-07-301978-02-02Friedrich WolffReflector for UV lamp - has groove shaped reflector with angled sidewalls and with outlet opening proportionate to diameter of light source
FR2439940A1 (en)*1978-10-271980-05-23Lampes Sa OPTICAL DEVICE FOR RIGOROUS LUMINANCE CONTROL WITH HIGH EFFICIENCY AND LIGHTING APPARATUS COMPRISING SUCH A DEVICE
GB2145218A (en)*1983-07-191985-03-20Admiral Dev CoRadiant heaters

Cited By (7)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US3245458A (en)*1962-12-111966-04-12Hupp CorpRadiant gas burner
US3268718A (en)*1963-05-091966-08-23Scm CorpLight reflector assembly
DE2634206A1 (en)*1976-07-301978-02-02Friedrich WolffReflector for UV lamp - has groove shaped reflector with angled sidewalls and with outlet opening proportionate to diameter of light source
FR2439940A1 (en)*1978-10-271980-05-23Lampes Sa OPTICAL DEVICE FOR RIGOROUS LUMINANCE CONTROL WITH HIGH EFFICIENCY AND LIGHTING APPARATUS COMPRISING SUCH A DEVICE
EP0011521A1 (en)*1978-10-271980-05-28Compagnie Des LampesOptical device affording a rigorous control of luminance with high efficiency, and lighting fixture comprising such a device
GB2145218A (en)*1983-07-191985-03-20Admiral Dev CoRadiant heaters
US4676222A (en)*1983-07-191987-06-30David Mervyn JonesRadiant heaters

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