FR498848A - Improvements to reflectors and their manufacturing process - Google Patents

Improvements to reflectors and their manufacturing process

Info

Publication number
FR498848A
FR498848A FR498848A FR498848DA FR498848A FR 498848 A FR498848 A FR 498848A FR 498848 A FR498848 A FR 498848A FR 498848D A FR498848D A FR 498848DA FR 498848 A FR498848 A FR 498848A
Authority
FR
France
Prior art keywords
reflectors
manufacturing process
manufacturing
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
FR498848A
Other languages
French (fr)
Inventor
Edward John Dobbins
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR498848A publication Critical patent/FR498848A/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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
FR498848A 1918-07-29 1919-04-30 Improvements to reflectors and their manufacturing process Expired FR498848A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12319/18A GB128447A (en) 1918-07-29 1918-07-29 Improvements in and relating to Reflectors and a Method of Making Same.

Publications (1)

Publication Number Publication Date
FR498848A true FR498848A (en) 1920-01-23

Family

ID=32345433

Family Applications (1)

Application Number Title Priority Date Filing Date
FR498848A Expired FR498848A (en) 1918-07-29 1919-04-30 Improvements to reflectors and their manufacturing process

Country Status (2)

Country Link
FR (1) FR498848A (en)
GB (1) GB128447A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE743323C (en) * 1938-04-10 1943-12-23 Fernseh Gmbh Process for the production of concave curved projection screens
US2503653A (en) * 1945-09-24 1950-04-11 Boyles Apparatus for dishing and variegating substantially flat glass sheets

Also Published As

Publication number Publication date
GB128447A (en) 1919-06-26

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