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FR1417637A - Improvements to illumination devices - Google Patents

Improvements to illumination devices

Info

Publication number
FR1417637A
FR1417637A FR998774A FR998774A FR1417637A FR 1417637 A FR1417637 A FR 1417637A FR 998774 A FR998774 A FR 998774A FR 998774 A FR998774 A FR 998774A FR 1417637 A FR1417637 A FR 1417637A
Authority
FR
France
Prior art keywords
illumination devices
illumination
devices
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
FR998774A
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to FR998774A priority Critical patent/FR1417637A/en
Application granted granted Critical
Publication of FR1417637A publication Critical patent/FR1417637A/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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/02—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for simulating daylight
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR998774A 1964-12-16 1964-12-16 Improvements to illumination devices Expired FR1417637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR998774A FR1417637A (en) 1964-12-16 1964-12-16 Improvements to illumination devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR998774A FR1417637A (en) 1964-12-16 1964-12-16 Improvements to illumination devices

Publications (1)

Publication Number Publication Date
FR1417637A true FR1417637A (en) 1965-11-12

Family

ID=8844875

Family Applications (1)

Application Number Title Priority Date Filing Date
FR998774A Expired FR1417637A (en) 1964-12-16 1964-12-16 Improvements to illumination devices

Country Status (1)

Country Link
FR (1) FR1417637A (en)

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