CA2001111A1 - An indirect luminaire having a secondary source induced low brightness lens element - Google Patents

An indirect luminaire having a secondary source induced low brightness lens element

Info

Publication number
CA2001111A1
CA2001111A1 CA2001111A CA2001111A CA2001111A1 CA 2001111 A1 CA2001111 A1 CA 2001111A1 CA 2001111 A CA2001111 A CA 2001111A CA 2001111 A CA2001111 A CA 2001111A CA 2001111 A1 CA2001111 A1 CA 2001111A1
Authority
CA
Canada
Prior art keywords
light
source
primary
transmissive element
lens element
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.)
Granted
Application number
CA2001111A
Other languages
French (fr)
Other versions
CA2001111C (en
Inventor
Douglas J. Herst
Peter Y. Y. Ngai
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.)
Peerless Lighting Corp
Original Assignee
Peerless Lighting Corp
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 Peerless Lighting Corp filed Critical Peerless Lighting Corp
Publication of CA2001111A1 publication Critical patent/CA2001111A1/en
Application granted granted Critical
Publication of CA2001111C publication Critical patent/CA2001111C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

An indirect lighting system having a generally visible light transmissive element, such as a prismatic lens element (31, 33) or a diffuser strip, which modifies the direction of the light incident thereon from a secondary light source, The lighting system has a primary light source (13, 14) and structural means as in a housing (21) for positioning the primary light source proximate a reflective surface (12) which reflects light back toward the light transmissive element and which thereby acts as a secondary source of light for illuminating this element. A light foil means such as vertical side reflector walls (45, 47) are disposed between the primary light source and light transmissive element for substantially blocking direct transmission of light to the latter from the former. The light foil means, by keeping primary source light from directly striking the light transmissive element, forces the observable brightness in this element to be induced substantially entirely by the reflected light from the secondary source.
CA002001111A 1988-10-20 1989-10-20 An indirect luminaire having a secondary source induced low brightness lens element Expired - Fee Related CA2001111C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26028788A 1988-10-20 1988-10-20
US260,287 1988-10-20

Publications (2)

Publication Number Publication Date
CA2001111A1 true CA2001111A1 (en) 1990-04-20
CA2001111C CA2001111C (en) 1999-02-09

Family

ID=22988563

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002001111A Expired - Fee Related CA2001111C (en) 1988-10-20 1989-10-20 An indirect luminaire having a secondary source induced low brightness lens element

Country Status (2)

Country Link
CA (1) CA2001111C (en)
WO (1) WO1990004739A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10143998A1 (en) 2001-09-07 2003-03-27 Philips Corp Intellectual Pty lamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4390930A (en) * 1981-04-15 1983-06-28 Herst Lighting Co. Indirect lighting fixture with improved light control
US4644454A (en) * 1984-12-28 1987-02-17 Peerless Lighting Corporation Lensed indirect luminaire having improved light distribution control

Also Published As

Publication number Publication date
WO1990004739A1 (en) 1990-05-03
CA2001111C (en) 1999-02-09

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed