FR840290A - Improvements to devices reflecting and refracting light - Google Patents

Improvements to devices reflecting and refracting light

Info

Publication number
FR840290A
FR840290A FR840290DA FR840290A FR 840290 A FR840290 A FR 840290A FR 840290D A FR840290D A FR 840290DA FR 840290 A FR840290 A FR 840290A
Authority
FR
France
Prior art keywords
refracting light
devices reflecting
reflecting
devices
refracting
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
Other languages
French (fr)
Inventor
Berta Wigg
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 filed Critical
Application granted granted Critical
Publication of FR840290A publication Critical patent/FR840290A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR840290D 1937-07-10 1938-07-06 Improvements to devices reflecting and refracting light Expired FR840290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB840290X 1937-07-10

Publications (1)

Publication Number Publication Date
FR840290A true FR840290A (en) 1939-04-21

Family

ID=10556033

Family Applications (1)

Application Number Title Priority Date Filing Date
FR840290D Expired FR840290A (en) 1937-07-10 1938-07-06 Improvements to devices reflecting and refracting light

Country Status (1)

Country Link
FR (1) FR840290A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2368807A2 (en) * 1976-10-21 1978-05-19 Lampes Sa IMPROVEMENT PROVIDED TO A REFLECTOR DEVICE FOR THE CONCENTRATION OF A FLOW OF WAVES
US4622625A (en) * 1984-09-06 1986-11-11 W. C. Heraeus Gmbh Operating-room light with variable illumination

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2368807A2 (en) * 1976-10-21 1978-05-19 Lampes Sa IMPROVEMENT PROVIDED TO A REFLECTOR DEVICE FOR THE CONCENTRATION OF A FLOW OF WAVES
US4622625A (en) * 1984-09-06 1986-11-11 W. C. Heraeus Gmbh Operating-room light with variable illumination

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