FR491619A - Perfectionnements à la projection ou distribution de lumière - Google Patents

Perfectionnements à la projection ou distribution de lumière

Info

Publication number
FR491619A
FR491619A FR491619A FR491619DA FR491619A FR 491619 A FR491619 A FR 491619A FR 491619 A FR491619 A FR 491619A FR 491619D A FR491619D A FR 491619DA FR 491619 A FR491619 A FR 491619A
Authority
FR
France
Prior art keywords
projection
distribution
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
FR491619A
Other languages
English (en)
Inventor
Theodore-Joseph Robin
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.)
THEODORE JOSEPH ROBIN
Original Assignee
THEODORE JOSEPH ROBIN
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 THEODORE JOSEPH ROBIN filed Critical THEODORE JOSEPH ROBIN
Application granted granted Critical
Publication of FR491619A publication Critical patent/FR491619A/fr
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
    • F21V7/05—Optical design plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/06—Lighting devices or systems producing a varying lighting effect flashing, e.g. with rotating reflector or light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/003—Searchlights, i.e. outdoor lighting device producing powerful beam of parallel rays, e.g. for military or attraction purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR491619A 1917-09-19 1918-09-06 Perfectionnements à la projection ou distribution de lumière Expired FR491619A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB491619X 1917-09-19

Publications (1)

Publication Number Publication Date
FR491619A true FR491619A (fr) 1919-06-10

Family

ID=1527599

Family Applications (1)

Application Number Title Priority Date Filing Date
FR491619A Expired FR491619A (fr) 1917-09-19 1918-09-06 Perfectionnements à la projection ou distribution de lumière

Country Status (1)

Country Link
FR (1) FR491619A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2154617A1 (fr) * 1971-09-29 1973-05-11 Siemens Ag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2154617A1 (fr) * 1971-09-29 1973-05-11 Siemens Ag

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