FR643653A - Improvement in the establishment of reflective surfaces for faces or other lighting devices - Google Patents

Improvement in the establishment of reflective surfaces for faces or other lighting devices

Info

Publication number
FR643653A
FR643653A FR643653DA FR643653A FR 643653 A FR643653 A FR 643653A FR 643653D A FR643653D A FR 643653DA FR 643653 A FR643653 A FR 643653A
Authority
FR
France
Prior art keywords
establishment
faces
improvement
lighting devices
reflective surfaces
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
Joseph Leischener
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 FR643653A publication Critical patent/FR643653A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR643653D 1927-11-08 1927-11-08 Improvement in the establishment of reflective surfaces for faces or other lighting devices Expired FR643653A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR643653T 1927-11-08

Publications (1)

Publication Number Publication Date
FR643653A true FR643653A (en) 1928-09-21

Family

ID=8999609

Family Applications (1)

Application Number Title Priority Date Filing Date
FR643653D Expired FR643653A (en) 1927-11-08 1927-11-08 Improvement in the establishment of reflective surfaces for faces or other lighting devices

Country Status (1)

Country Link
FR (1) FR643653A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607904A1 (en) * 1986-12-04 1988-06-10 Philips Nv LIGHTING APPARATUS WITH A FACTOR REFLECTOR

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607904A1 (en) * 1986-12-04 1988-06-10 Philips Nv LIGHTING APPARATUS WITH A FACTOR REFLECTOR
NL8603089A (en) * 1986-12-04 1988-07-01 Philips Nv LIGHTING LUMINAIRE.

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