FR715493A - Perfectionnements apportés aux lampes, en vue de limiter les faisceaux lumineux issus - Google Patents

Perfectionnements apportés aux lampes, en vue de limiter les faisceaux lumineux issus

Info

Publication number
FR715493A
FR715493A FR715493DA FR715493A FR 715493 A FR715493 A FR 715493A FR 715493D A FR715493D A FR 715493DA FR 715493 A FR715493 A FR 715493A
Authority
FR
France
Prior art keywords
lamps
limit
order
light beams
beams
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
English (en)
Inventor
Theodule Labeille
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 FR715493A publication Critical patent/FR715493A/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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR715493D 1931-04-15 1931-04-15 Perfectionnements apportés aux lampes, en vue de limiter les faisceaux lumineux issus Expired FR715493A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR715493T 1931-04-15

Publications (1)

Publication Number Publication Date
FR715493A true FR715493A (fr) 1931-12-03

Family

ID=9088989

Family Applications (1)

Application Number Title Priority Date Filing Date
FR715493D Expired FR715493A (fr) 1931-04-15 1931-04-15 Perfectionnements apportés aux lampes, en vue de limiter les faisceaux lumineux issus

Country Status (1)

Country Link
FR (1) FR715493A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135472A (en) * 1960-07-15 1964-06-02 Helmholz & Pauli Lighting unit
DE1193443B (de) * 1961-12-19 1965-05-26 Hemholz & Pauli Beleuchtungste Abblendraster fuer Beleuchtungskoerper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135472A (en) * 1960-07-15 1964-06-02 Helmholz & Pauli Lighting unit
DE1193443B (de) * 1961-12-19 1965-05-26 Hemholz & Pauli Beleuchtungste Abblendraster fuer Beleuchtungskoerper

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