GB395611A - Improvements relating to reflectors for the lamps of cinema projectors - Google Patents

Improvements relating to reflectors for the lamps of cinema projectors

Info

Publication number
GB395611A
GB395611A GB664/33A GB66433A GB395611A GB 395611 A GB395611 A GB 395611A GB 664/33 A GB664/33 A GB 664/33A GB 66433 A GB66433 A GB 66433A GB 395611 A GB395611 A GB 395611A
Authority
GB
United Kingdom
Prior art keywords
reflectors
reflector
silver
lamps
copper
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
GB664/33A
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
Priority to GB664/33A priority Critical patent/GB395611A/en
Publication of GB395611A publication Critical patent/GB395611A/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
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

395,611. Reflectors. WILLIAMS, A. E., 84, Vyse Street, Birmingham. Jan. 9, 1933, No. 664. [Class 97 (i).] A reflector for a cinema projection lamp comprises a mechanically formed heavy metal base of high heat conductivity, an intermediate metallic film, and an outer reflecting surface of platinum, rhodium, ruthenium, or iridium. The base may be formed of copper, silver, or of nickel-copper, brass, bronze, or other alloy of these two metals, and is burnished before the application of the intermediate film which may be of silver, gold, or tin and which also is burnished before the application of the outer reflecting surface. The back of the reflector may be cooled by providing it with fins, by an air blast, or by circulating water or other liquid. Specification 363,569 is referred to.
GB664/33A 1933-01-09 1933-01-09 Improvements relating to reflectors for the lamps of cinema projectors Expired GB395611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB664/33A GB395611A (en) 1933-01-09 1933-01-09 Improvements relating to reflectors for the lamps of cinema projectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB664/33A GB395611A (en) 1933-01-09 1933-01-09 Improvements relating to reflectors for the lamps of cinema projectors

Publications (1)

Publication Number Publication Date
GB395611A true GB395611A (en) 1933-07-20

Family

ID=9708340

Family Applications (1)

Application Number Title Priority Date Filing Date
GB664/33A Expired GB395611A (en) 1933-01-09 1933-01-09 Improvements relating to reflectors for the lamps of cinema projectors

Country Status (1)

Country Link
GB (1) GB395611A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2464256A (en) * 1944-02-05 1949-03-15 Donald M Packer Front-surface reflector and method of making same
US2585128A (en) * 1946-03-01 1952-02-12 Bendix Aviat Corp Aluminum optical mirror and method of making same
US4795654A (en) * 1984-11-05 1989-01-03 Innofinance Altalanos Innovacios Penzintezet Structure for shielding X-ray and gamma radiation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2464256A (en) * 1944-02-05 1949-03-15 Donald M Packer Front-surface reflector and method of making same
US2585128A (en) * 1946-03-01 1952-02-12 Bendix Aviat Corp Aluminum optical mirror and method of making same
US4795654A (en) * 1984-11-05 1989-01-03 Innofinance Altalanos Innovacios Penzintezet Structure for shielding X-ray and gamma radiation

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