GB485052A - Apparatus for lighting from an invisible illuminating source - Google Patents

Apparatus for lighting from an invisible illuminating source

Info

Publication number
GB485052A
GB485052A GB13438/37A GB1343837A GB485052A GB 485052 A GB485052 A GB 485052A GB 13438/37 A GB13438/37 A GB 13438/37A GB 1343837 A GB1343837 A GB 1343837A GB 485052 A GB485052 A GB 485052A
Authority
GB
United Kingdom
Prior art keywords
light
mirror
opening
invisible
lighting
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
GB13438/37A
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
Publication of GB485052A publication Critical patent/GB485052A/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
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Projection Apparatus (AREA)

Abstract

485,052. Light-projection apparatus. TODOROWSKY, V. May 11, 1937, No. 13438. Convention date, May 11, 1936. [Class 75 (iv)] In light-projection apparatus in which two concave mirrors 12, 19, one of which is larger than the other, are directed towards one another so that the small mirror 19 reflects light from a light source 21 located between the mirrors on to the large mirror 12 from which it is reflected to the exterior of the apparatus, the large mirror having two foci 16, 18 and being so positioned that one focus 18 and the light source 21 are both located at the centre of the small mirror, the large mirror is covered by a screen 14 formed with an opening 17, which is covered by the small mirror to conceal the light source from view, and with a second opening 15 with the second focus 16 at its centre, for the egress of light. An optical system may be located at the opening in the screen.
GB13438/37A 1936-05-11 1937-05-11 Apparatus for lighting from an invisible illuminating source Expired GB485052A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR485052X 1936-05-11

Publications (1)

Publication Number Publication Date
GB485052A true GB485052A (en) 1938-05-13

Family

ID=8903889

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13438/37A Expired GB485052A (en) 1936-05-11 1937-05-11 Apparatus for lighting from an invisible illuminating source

Country Status (1)

Country Link
GB (1) GB485052A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4233930A1 (en) * 1991-10-10 1993-04-15 Juergen Schewe Wall- or ceiling-mounted spot light - has adjustable deflection mirror to direct light onto specific object or area
WO1995004240A1 (en) * 1993-07-30 1995-02-09 Cogent Light Technologies, Inc. Condensing and collecting optical system using an ellipsoidal reflector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4233930A1 (en) * 1991-10-10 1993-04-15 Juergen Schewe Wall- or ceiling-mounted spot light - has adjustable deflection mirror to direct light onto specific object or area
WO1995004240A1 (en) * 1993-07-30 1995-02-09 Cogent Light Technologies, Inc. Condensing and collecting optical system using an ellipsoidal reflector
US5414600A (en) * 1993-07-30 1995-05-09 Cogent Light Technologies, Inc. Condensing and collecting optical system using an ellipsoidal reflector

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