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GB1012774A - Lighting apparatus - Google Patents

Lighting apparatus

Info

Publication number
GB1012774A
GB1012774A GB36803/63A GB3680363A GB1012774A GB 1012774 A GB1012774 A GB 1012774A GB 36803/63 A GB36803/63 A GB 36803/63A GB 3680363 A GB3680363 A GB 3680363A GB 1012774 A GB1012774 A GB 1012774A
Authority
GB
United Kingdom
Prior art keywords
sleeve
lenticles
centre
light
reflecting surface
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
GB36803/63A
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.)
Anciens Etablissements Barbier Benard and Turenne SA
Original Assignee
Anciens Etablissements Barbier Benard and Turenne SA
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 Anciens Etablissements Barbier Benard and Turenne SA filed Critical Anciens Etablissements Barbier Benard and Turenne SA
Publication of GB1012774A publication Critical patent/GB1012774A/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
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/20—Lighting for medical use
    • F21W2131/205—Lighting for medical use for operating theatres

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

1,012,774. Lighting apparatus. ANCIENS ETABLISSEMENTS BARKIEC, BENARD & TURENNE. Sept. 18, 1963 [Sept. 19, 1962], No. 36803/63. Heading F4R. Apparatus for shadowless lighting, especially for surgical operations, comprises a reflecting surface of revolution having a light source at the centre surrounded by a transparent sleeve having lenticles around the periphery which deflect the majority of the light rays into planes other than radial planes. The reflecting surface is preferably frusto-conical. In the form shown, the lamp is arranged at the centre of a sleeve 1, Fig. 2, formed with internal lenticles 4 which spread the light. The lamp and sleeve are arranged at the centre of a reflecting surface 3 which directs the light on to an area below the reflector. The sleeve may be provided externally with Fresnel rings. Alternatively, the lenticles 4 may be on the external surface of the sleeve as in Fig. 5.
GB36803/63A 1962-09-19 1963-09-18 Lighting apparatus Expired GB1012774A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR909878A FR1341640A (en) 1962-09-19 1962-09-19 Light fixture without drop shadows

Publications (1)

Publication Number Publication Date
GB1012774A true GB1012774A (en) 1965-12-08

Family

ID=8787097

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36803/63A Expired GB1012774A (en) 1962-09-19 1963-09-18 Lighting apparatus

Country Status (2)

Country Link
FR (1) FR1341640A (en)
GB (1) GB1012774A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2327415A1 (en) * 1972-10-02 1974-04-11 Physical Systems OPERATING LIGHT
US5897201A (en) * 1993-01-21 1999-04-27 Simon; Jerome H. Architectural lighting distributed from contained radially collimated light

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1372024A (en) * 1970-10-07 1974-10-30 Oram J A Lighting device
FR2372380A1 (en) * 1976-11-30 1978-06-23 Barbier Benard & Turenne LIGHTING UNIT WITHOUT SHADOWS
US4389701A (en) * 1980-10-27 1983-06-21 Optimetrix Corporation Illumination system
JPS61102618A (en) * 1984-10-23 1986-05-21 ヴィルト　ライツ　アクチエンゲゼルシャフト Dark-field lighting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2327415A1 (en) * 1972-10-02 1974-04-11 Physical Systems OPERATING LIGHT
US5897201A (en) * 1993-01-21 1999-04-27 Simon; Jerome H. Architectural lighting distributed from contained radially collimated light

Also Published As

Publication number Publication date
FR1341640A (en) 1963-11-02

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