CA958393A - Square lite projector using prismatic lens - Google Patents

Square lite projector using prismatic lens

Info

Publication number
CA958393A
CA958393A CA144,803A CA144803A CA958393A CA 958393 A CA958393 A CA 958393A CA 144803 A CA144803 A CA 144803A CA 958393 A CA958393 A CA 958393A
Authority
CA
Canada
Prior art keywords
lite
projector
square
prismatic lens
prismatic
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
CA144,803A
Other versions
CA144803S (en
Inventor
Robert G. Nordquist
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.)
GRIMES Manufacturing Co
Original Assignee
GRIMES Manufacturing Co
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 GRIMES Manufacturing Co filed Critical GRIMES Manufacturing Co
Application granted granted Critical
Publication of CA958393A publication Critical patent/CA958393A/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
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
CA144,803A 1971-06-16 1972-06-15 Square lite projector using prismatic lens Expired CA958393A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15364271A 1971-06-16 1971-06-16

Publications (1)

Publication Number Publication Date
CA958393A true CA958393A (en) 1974-11-26

Family

ID=22548093

Family Applications (1)

Application Number Title Priority Date Filing Date
CA144,803A Expired CA958393A (en) 1971-06-16 1972-06-15 Square lite projector using prismatic lens

Country Status (5)

Country Link
US (1) US3732417A (en)
CA (1) CA958393A (en)
DE (1) DE2229120A1 (en)
FR (1) FR2141789B1 (en)
GB (1) GB1391677A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2247672B1 (en) * 1973-10-12 1976-06-18 Alexandre Et Co
FR2372380A1 (en) * 1976-11-30 1978-06-23 Barbier Benard & Turenne LIGHTING UNIT WITHOUT SHADOWS
US4670825A (en) * 1985-12-31 1987-06-02 Fouke Herbert A Reflector for use in uniformly illuminating a polygonal area
US4937715A (en) * 1989-01-26 1990-06-26 Kirschner Medical Corporation Lamp system for operating theatres and the like
US4994945A (en) * 1989-01-26 1991-02-19 Kirschner Medical Corporation Lamp system for operating theatres and the like
GB2329036A (en) * 1997-09-05 1999-03-10 Sharp Kk Optical system for redistributing optical extent and illumination source
EP0901031B1 (en) * 1997-09-05 2004-10-13 Sharp Kabushiki Kaisha Dark field projection display
JP3005955B2 (en) * 1998-04-17 2000-02-07 スタンレー電気株式会社 Lamp
US6969181B1 (en) 2001-05-08 2005-11-29 Genlyte Thomas Group Llc Fully recessed unit equipment luminaire
SE0201961D0 (en) * 2002-06-25 2002-06-25 Labino Patent Ab Lighting equipment
US20050047137A1 (en) * 2003-08-28 2005-03-03 Era Optoelectronics Inc. Cross-shaped laser rays generator with non-spherical lens
FR2875578B1 (en) * 2004-09-21 2006-12-15 Valeo Vision Sa SIGNALING LIGHT, IN PARTICULAR FOR MOTOR VEHICLE
JP3912407B2 (en) * 2004-12-14 2007-05-09 カシオ計算機株式会社 Light source unit and projector device
GB2421584A (en) * 2004-12-21 2006-06-28 Sharp Kk Optical device with converging and diverging elements for directing light
JP4218649B2 (en) * 2005-03-07 2009-02-04 カシオ計算機株式会社 Light source unit and projector device
FI20085548A0 (en) * 2008-06-04 2008-06-04 Valopaa Oy Device for direction and illumination of lighting
US8098434B1 (en) 2010-09-22 2012-01-17 3M Innovative Properties Company Optical decollimator for daylighting systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344268A (en) * 1967-09-26 Refractor for usb in uniformly illuminating a polygonal area
US1350295A (en) * 1919-04-18 1920-08-24 Kirby Champeau Co Inc Illuminating means
US2124417A (en) * 1937-06-18 1938-07-19 New York World S Fair 1939 Inc Lighting fixture
US2366356A (en) * 1942-10-14 1945-01-02 Holophane Co Inc Luminaire

Also Published As

Publication number Publication date
US3732417A (en) 1973-05-08
FR2141789B1 (en) 1977-12-23
DE2229120A1 (en) 1972-12-21
FR2141789A1 (en) 1973-01-26
GB1391677A (en) 1975-04-23

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