EP0440274A1 - Reflector - Google Patents

Reflector Download PDF

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Publication number
EP0440274A1
EP0440274A1 EP91200060A EP91200060A EP0440274A1 EP 0440274 A1 EP0440274 A1 EP 0440274A1 EP 91200060 A EP91200060 A EP 91200060A EP 91200060 A EP91200060 A EP 91200060A EP 0440274 A1 EP0440274 A1 EP 0440274A1
Authority
EP
European Patent Office
Prior art keywords
reflector
symmetry
relief surfaces
planes
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.)
Withdrawn
Application number
EP91200060A
Other languages
German (de)
French (fr)
Inventor
Jacob Poot
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.)
Poot Lichtenergie BV
Original Assignee
Poot Lichtenergie BV
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
Priority to NL9000264A priority Critical patent/NL9000264A/en
Priority to NL9000264 priority
Application filed by Poot Lichtenergie BV filed Critical Poot Lichtenergie BV
Publication of EP0440274A1 publication Critical patent/EP0440274A1/en
Application status is Withdrawn legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/04Optical design
    • F21V7/09Optical design with a combination of different curvatures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/04Optical design

Abstract

For lighting, particularly in glass horticulture, assimilation lighting is applied to improve the quality the crop. In order to obtain the most regular possible progression of the light output, which is expressed in the polar diagram, a reflector is used according to the invention. The reflector (1) has a central lengthwise plane where the lighting element is placed, while relief surfaces (3,4,5) are arranged on either side of planes of symmetry passing through the centre point of the reflector (1). It has been found in practice that the polar diagram is improved as a result of the relief surfaces (3,4,5).

Description

  • The invention relates to a reflector for diffusing light as uniformly as possible.
  • Assimilation lighting is applied particularly in glass horticulture. Due to this lighting the production of the crop is increased and the quality improved. Especially in the seasons when the natural incidence of light is limited is lighting of vital importance. It is the object of the invention to provide a reflector the light output of which is as uniform as possible. This is expressed by the most regular possible progression of the so-called polar diagram.
  • This is achieved according to the invention by providing a reflector consisting of an approximately semi-elliptical body cut through along the longitudinal axis and having at least two planes of symmetry standing perpendicular to each other, means for arranging a lighting element at approximately the intersection of the planes of symmetry and, running along the main axis, first relief surfaces arranged on either side of one of the planes of symmetry in the surface of the sphere and second relief surfaces arranged on either side of that plane of symmetry at a greater distance from that plane of symmetry than the first.
  • Practical tests have shown that a reflector with relief surfaces according to the invention produces a regular polar diagram of the desired form.
  • According to a preferred embodiment the surface areas of the second relief surfaces are larger than those of the first. The placing of the relief surfaces is also preferably such that these lie symmetrically relative to both planes of symmetry.
  • The invention is further elucidated with reference to the drawings.
  • In the drawings:
    • Fig. 1 shows a perspective view of the reflector according to the invention,
    • fig. 2 shows a sectional view of the reflector of fig. 1, and
    • fig. 3 shows a sectional view from a position turned through 90° relative to that of fig. 2.
  • The reflector 1 has a half sphere-like shape and is provided with connecting means 2 for attaching a light element. In the reflector can be discerned two planes of symmetry standing perpendicular to one another, namely, one plane of symmetry in lengthwise direction and one central section plane of symmetry in a position perpendicular thereto. Series of first relief surfaces 3 and 4 are arranged symmetrically relative to the planes of symmetry. At an interval from the relief surfaces 3, 4 second relief surfaces, one 5 of which is visible, are arranged at a greater distance from the planes of symmetry than the first relief surfaces. The surface area of the relief surface 5 is chosen larger than the part surfaces of the series of relief surfaces 3 and 4.

Claims (3)

  1. Reflector (1) consisting of an approximately semi-elliptical body cut through along the longitudinal axis and having at least two planes of symmetry standing perpendicular to each other, means (2) for arranging a lighting element at roughly the intersection of the planes of symmetry and running along the main axis, first relief surfaces (3, 4) arranged on either side of one of the planes of symmetry in the surface of the sphere and second relief surfaces (5) arranged on either side of that plane of symmetry at a greater distance from that plane of symmetry than the first relief surfaces.
  2. Reflector as claimed in claim 1, characterized in that the first relief surfaces (3, 4) each have a small surface area relative to the second relief surfaces (5).
  3. Reflector as claimed in claims 1-2, characterized in that the relief surfaces (3, 4, 5) are placed symmetrically relative to both planes of symmetry.
EP91200060A 1990-02-02 1991-01-14 Reflector Withdrawn EP0440274A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL9000264A NL9000264A (en) 1990-02-02 1990-02-02 Reflector.
NL9000264 1990-02-02

Publications (1)

Publication Number Publication Date
EP0440274A1 true EP0440274A1 (en) 1991-08-07

Family

ID=19856531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91200060A Withdrawn EP0440274A1 (en) 1990-02-02 1991-01-14 Reflector

Country Status (3)

Country Link
EP (1) EP0440274A1 (en)
CA (1) CA2034710A1 (en)
NL (1) NL9000264A (en)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9016907B2 (en) 2013-07-18 2015-04-28 Ip Holdings, Llc Air cooled horticulture lighting fixture for a double ended high pressure sodium lamp
USD737498S1 (en) 2013-06-20 2015-08-25 Ip Holdings, Llc Horticulture grow light fixture
USD739595S1 (en) 2013-07-09 2015-09-22 Ip Holdings, Llc Horticulture grow light housing
USD750313S1 (en) 2013-07-09 2016-02-23 Ip Holdings, Llc Grow light fixture
US9335038B2 (en) 2011-07-20 2016-05-10 Ip Holdings, Llc Vertically disposed HID lamp fixture
USD756026S1 (en) 2014-09-11 2016-05-10 Ip Holdings, Llc Light fixture
USD757346S1 (en) 2015-01-08 2016-05-24 Ip Holdings, Llc Horticulture grow light
USD758646S1 (en) 2014-02-11 2016-06-07 Ip Holdings, Llc Double ended lamp reflector kit
USD769514S1 (en) 2014-10-22 2016-10-18 Ip Holdings, Llc Horticulture grow light
USD769513S1 (en) 2015-04-15 2016-10-18 Ip Holdings, Llc Light fixture
USD770079S1 (en) 2015-04-02 2016-10-25 Ip Holdings, Llc Light fixture
USD770670S1 (en) 2015-06-24 2016-11-01 Ip Holdings, Llc Horticulture grow light
USD773107S1 (en) 2015-04-13 2016-11-29 Ip Holdings, Llc Horticulture grow light
USD775406S1 (en) 2014-02-24 2016-12-27 Ip Holdings, Llc Horticulture grow light reflector
USD775760S1 (en) 2013-03-27 2017-01-03 Ip Holdings, Llc Horticulture grow light housing
USD783887S1 (en) 2014-12-11 2017-04-11 Ip Holdings, Llc Horticulture grow light
USD792635S1 (en) 2014-08-07 2017-07-18 Ip Holdings, Llc Horticulture grow light
US9750199B2 (en) 2013-07-18 2017-09-05 Ip Holdings, Llc Air cooled horticulture lighting fixture
USD796728S1 (en) 2016-06-06 2017-09-05 Ip Holdings, Llc Light fixture
USD797350S1 (en) 2016-11-01 2017-09-12 Ip Holdings, Llc Light fixture
USD797353S1 (en) 2014-06-11 2017-09-12 Ip Holdings, Llc Sealed optics air cooled grow light
USD804078S1 (en) 2016-08-31 2017-11-28 Ip Holdings, Llc Light fixture
USD804079S1 (en) 2016-08-31 2017-11-28 Ip Holdings, Llc Light fixture
USD804706S1 (en) 2016-01-05 2017-12-05 Ip Holdings, Llc Light fixture
USD804707S1 (en) 2016-01-07 2017-12-05 Ip Holding, Llc Light fixture
USD822882S1 (en) 2017-05-17 2018-07-10 Ip Holdings, Llc Horticulture grow light
USD842532S1 (en) 2017-10-25 2019-03-05 Hgci, Inc. Light fixture
USD843049S1 (en) 2017-09-14 2019-03-12 Hgci, Inc. Horticulture grow light
USD848663S1 (en) 2017-11-03 2019-05-14 Hgci, Inc. Light fixture
USD848665S1 (en) 2017-11-08 2019-05-14 Hgci, Inc. Horticulture grow light
USD848664S1 (en) 2017-11-07 2019-05-14 Hgci, Inc. Light fixture

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR547944A (en) * 1922-12-28
US2970208A (en) * 1957-07-26 1961-01-31 Westinghouse Electric Corp Luminaire optical system
BE884966A (en) * 1980-08-28 1980-12-16 Shemitz Sylvan R Luminaire.
NL8500300A (en) * 1985-02-04 1986-09-01 Poot Lichtenergie Reflector.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR547944A (en) * 1922-12-28
US2970208A (en) * 1957-07-26 1961-01-31 Westinghouse Electric Corp Luminaire optical system
BE884966A (en) * 1980-08-28 1980-12-16 Shemitz Sylvan R Luminaire.
NL8500300A (en) * 1985-02-04 1986-09-01 Poot Lichtenergie Reflector.

Cited By (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9335038B2 (en) 2011-07-20 2016-05-10 Ip Holdings, Llc Vertically disposed HID lamp fixture
USD826468S1 (en) 2012-06-26 2018-08-21 Hgci, Inc. Light fixture
USD802830S1 (en) 2012-06-26 2017-11-14 Ip Holdings, Llc Light fixture
USD775760S1 (en) 2013-03-27 2017-01-03 Ip Holdings, Llc Horticulture grow light housing
USD771301S1 (en) 2013-06-20 2016-11-08 Ip Holdings, Llc Horticulture grow light fixture
USD843640S1 (en) 2013-06-20 2019-03-19 Hgci, Inc. Horticulture grow light fixture
USD737498S1 (en) 2013-06-20 2015-08-25 Ip Holdings, Llc Horticulture grow light fixture
USD802828S1 (en) 2013-06-20 2017-11-14 Ip Holdings, Llc Horticulture grow light fixture
USD796727S1 (en) 2013-07-09 2017-09-05 Ip Holdings, Llc Horticulture grow light housing
USD739595S1 (en) 2013-07-09 2015-09-22 Ip Holdings, Llc Horticulture grow light housing
USD750313S1 (en) 2013-07-09 2016-02-23 Ip Holdings, Llc Grow light fixture
US9016907B2 (en) 2013-07-18 2015-04-28 Ip Holdings, Llc Air cooled horticulture lighting fixture for a double ended high pressure sodium lamp
US9750199B2 (en) 2013-07-18 2017-09-05 Ip Holdings, Llc Air cooled horticulture lighting fixture
US9903578B1 (en) 2013-07-18 2018-02-27 Ip Holdings, Llc Air cooled horticulture lighting fixture for a double ended high pressure sodium lamp
US9888633B1 (en) 2013-07-18 2018-02-13 Ip Holdings, Llc Air cooled horticulture lighting fixture
US9752766B2 (en) 2013-07-18 2017-09-05 Ip Holdings, Llc Air cooled horticulture lighting fixture
USD758646S1 (en) 2014-02-11 2016-06-07 Ip Holdings, Llc Double ended lamp reflector kit
USD847394S1 (en) 2014-02-11 2019-04-30 Hgci, Inc. Double ended lamp reflector kit
USD775406S1 (en) 2014-02-24 2016-12-27 Ip Holdings, Llc Horticulture grow light reflector
USD802826S1 (en) 2014-06-11 2017-11-14 Ip Holdings, Llc Sealed optics air cooled grow light
USD825826S1 (en) 2014-06-11 2018-08-14 Hgci, Inc. Sealed optics air cooled grow light
USD797353S1 (en) 2014-06-11 2017-09-12 Ip Holdings, Llc Sealed optics air cooled grow light
USD792635S1 (en) 2014-08-07 2017-07-18 Ip Holdings, Llc Horticulture grow light
USD793616S1 (en) 2014-09-11 2017-08-01 Ip Holdings, Llc Light fixture
USD756026S1 (en) 2014-09-11 2016-05-10 Ip Holdings, Llc Light fixture
USD837442S1 (en) 2014-09-11 2019-01-01 Hgci, Inc. Light fixture
USD769514S1 (en) 2014-10-22 2016-10-18 Ip Holdings, Llc Horticulture grow light
USD811647S1 (en) 2014-12-11 2018-02-27 Ip Holdings, Llc Horticulture grow light
USD783887S1 (en) 2014-12-11 2017-04-11 Ip Holdings, Llc Horticulture grow light
USD757346S1 (en) 2015-01-08 2016-05-24 Ip Holdings, Llc Horticulture grow light
USD814687S1 (en) 2015-01-08 2018-04-03 Ip Holdings, Llc Light fixture
USD770079S1 (en) 2015-04-02 2016-10-25 Ip Holdings, Llc Light fixture
USD773107S1 (en) 2015-04-13 2016-11-29 Ip Holdings, Llc Horticulture grow light
USD804710S1 (en) 2015-04-13 2017-12-05 Ip Holdings, Llc Horticulture grow light
USD786488S1 (en) 2015-04-15 2017-05-09 Ip Holdings, Llc Light fixture
USD804708S1 (en) 2015-04-15 2017-12-05 Ip Holding, Llc Light fixture
USD769513S1 (en) 2015-04-15 2016-10-18 Ip Holdings, Llc Light fixture
USD804709S1 (en) 2015-04-15 2017-12-05 Ip Holdings, Llc Light fixture
USD781492S1 (en) 2015-06-24 2017-03-14 Ip Holdings, Llc Horticulture grow light
USD770670S1 (en) 2015-06-24 2016-11-01 Ip Holdings, Llc Horticulture grow light
USD802829S1 (en) 2015-06-24 2017-11-14 Ip Holdings, Llc Horticulture grow light
USD826469S1 (en) 2015-06-24 2018-08-21 Hgci, Inc. Horticulture grow light
USD825827S1 (en) 2016-01-05 2018-08-14 Hgci, Inc. Light fixture
USD804706S1 (en) 2016-01-05 2017-12-05 Ip Holdings, Llc Light fixture
USD804707S1 (en) 2016-01-07 2017-12-05 Ip Holding, Llc Light fixture
USD796728S1 (en) 2016-06-06 2017-09-05 Ip Holdings, Llc Light fixture
USD839471S1 (en) 2016-06-06 2019-01-29 Hgci, Inc. Light fixture
USD804078S1 (en) 2016-08-31 2017-11-28 Ip Holdings, Llc Light fixture
USD851804S1 (en) 2016-08-31 2019-06-18 Hgci, Inc. Light fixture
USD804079S1 (en) 2016-08-31 2017-11-28 Ip Holdings, Llc Light fixture
USD797350S1 (en) 2016-11-01 2017-09-12 Ip Holdings, Llc Light fixture
USD822882S1 (en) 2017-05-17 2018-07-10 Ip Holdings, Llc Horticulture grow light
USD843049S1 (en) 2017-09-14 2019-03-12 Hgci, Inc. Horticulture grow light
USD842532S1 (en) 2017-10-25 2019-03-05 Hgci, Inc. Light fixture
USD848663S1 (en) 2017-11-03 2019-05-14 Hgci, Inc. Light fixture
USD848664S1 (en) 2017-11-07 2019-05-14 Hgci, Inc. Light fixture
USD848665S1 (en) 2017-11-08 2019-05-14 Hgci, Inc. Horticulture grow light

Also Published As

Publication number Publication date
NL9000264A (en) 1991-09-02
CA2034710A1 (en) 1991-08-03

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