FR817059A - Improvement in optical systems for light signals - Google Patents

Improvement in optical systems for light signals

Info

Publication number
FR817059A
FR817059A FR817059DA FR817059A FR 817059 A FR817059 A FR 817059A FR 817059D A FR817059D A FR 817059DA FR 817059 A FR817059 A FR 817059A
Authority
FR
France
Prior art keywords
improvement
optical systems
light signals
signals
light
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)
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.)
Forges et Ateliers de Constructions Electriques de Jeumont SA
Original Assignee
Forges et Ateliers de Constructions Electriques de Jeumont SA
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 Forges et Ateliers de Constructions Electriques de Jeumont SA filed Critical Forges et Ateliers de Constructions Electriques de Jeumont SA
Application granted granted Critical
Publication of FR817059A publication Critical patent/FR817059A/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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR817059D 1936-04-27 1936-04-27 Improvement in optical systems for light signals Expired FR817059A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR817059T 1936-04-27

Publications (1)

Publication Number Publication Date
FR817059A true FR817059A (en) 1937-08-25

Family

ID=9268110

Family Applications (1)

Application Number Title Priority Date Filing Date
FR817059D Expired FR817059A (en) 1936-04-27 1936-04-27 Improvement in optical systems for light signals

Country Status (1)

Country Link
FR (1) FR817059A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0621440A1 (en) * 1993-04-23 1994-10-26 D. Swarovski & Co. A transparent element for varying the light rays from an illuminating means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0621440A1 (en) * 1993-04-23 1994-10-26 D. Swarovski & Co. A transparent element for varying the light rays from an illuminating means

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