WO2013107728A1 - Lentille et dispositif d'éclairage doté de la lentille - Google Patents

Lentille et dispositif d'éclairage doté de la lentille Download PDF

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Publication number
WO2013107728A1
WO2013107728A1 PCT/EP2013/050649 EP2013050649W WO2013107728A1 WO 2013107728 A1 WO2013107728 A1 WO 2013107728A1 EP 2013050649 W EP2013050649 W EP 2013050649W WO 2013107728 A1 WO2013107728 A1 WO 2013107728A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
light
light incident
illuminating device
emergent surface
Prior art date
Application number
PCT/EP2013/050649
Other languages
English (en)
Inventor
Tingming LIU
Peng Chen
Aiai Li
Yusheng MING
Original Assignee
Osram Gmbh
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 Osram Gmbh filed Critical Osram Gmbh
Publication of WO2013107728A1 publication Critical patent/WO2013107728A1/fr

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
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0056—Arrays characterized by the distribution or form of lenses arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a lens for an illuminating device.
  • the present invention further relates to an illuminating device having the lens.
  • each LED chip is equipped with a single lens so as to obtain a desired light shape.
  • a transparent protective cover is still needed for attachments of the streetlamp, but the transparent protective cover cannot serve any optical function, and on the contrary, it reduces the optical effect of the streetlamp on the whole.
  • the transparent protective cover is removed, and the lens equipped to the LED chip is im- proved.
  • This lens not only can enable the streetlamp to gen ⁇ erate a desired light shape, but also can protect electronic devices in the streetlamp.
  • outer surface of such lens i.e., light emergent surface
  • a plurality of LED chips are used in the street- lamp, a plurality of light emergent surfaces corresponding to LED chips are formed on the outer surface of the lens.
  • droplets, particles, dusts, etc. can easily con ⁇ verge on top of each of the light emergent surfaces of the lens, which will change the light distribution of light from the streetlamp.
  • droplets may converge on each light emergent surface, and this will sig ⁇ nificantly affect the light distribution performance of the streetlamp and change the light shape formed by the light from the streetlamp.
  • the outer surface of the lens is hard to be cleaned in maintenance as it is ir ⁇ regular .
  • the present invention provides a lens.
  • the lens is more easily cleaned and exerts a relatively small influence on the external envi ⁇ ronment while it is capable of meeting corresponding illuminating requirement.
  • the present invention further provides an illuminating device having the lens.
  • Such illuminating device has a simple structure, is easily cleaned and exerts a small influence on the external environment.
  • the first object of the present invention is accomplished via a lens for an illuminating device.
  • the illuminating device comprises a light-emitting assembly, wherein the lens com ⁇ prises a plurality of light incident surfaces and a light emergent surface, the light incident surfaces are curved to ⁇ wards the light emergent surface, respectively, to form ac ⁇ commodating cavities for respectively accommodating a light- emitting element of the light-emitting assemblies, and the light emergent surface is configured to be flat surface.
  • the lens includes a base, wherein the light incident surfaces are formed on one side of the base and the light emergent surface is formed on the other side opposite to the one side of the base.
  • the light incident surfaces are formed on the one side of the base by an array.
  • the light emergent surface is configured to be a single flat surface for all of the light incident surfaces. That is to say, the light emergent surface of the lens of the present invention can be configured to be a flat, single emergent surface, which further reduces the time cost for maintaining the lens .
  • a curve of re ⁇ spective light incident surface on a cross section is mirror symmetrical with respect to a longitudinal section perpen ⁇ dicular to the cross section.
  • a curve of respective light incident surface on the longitudinal section is asymmetrical with respect to the cross section.
  • the light incident surfaces also can be configured to be spherical or free surfaces so as to obtain other types of light shapes.
  • the lens is made from glass or transparent plas ⁇ tic.
  • PMMA or PC can be selected.
  • the other object of the present invention is accomplished via an illuminating device having the lens of the above type.
  • the illuminating device further comprises a light- emitting assembly that comprises a printed circuit board and at least one LED chip as the light-emitting element.
  • Fig. 1 is an exploded perspective view of one solution of a prior illuminating device
  • Fig. 2 is an exploded perspective view of another solution of a prior illuminating device
  • Fig. 3 is a schematic diagram of an illuminating device of the present invention
  • Fig. 4a-Fig. 4b are different section views of a lens of the present invention
  • Fig. 5 is a light distribution map of light from an illuminating device of the present invention.
  • Fig. 1 is an exploded perspective view of one solution of a prior illuminating device. It can be seen from Fig. 1 that the illuminating device comprises a printed circuit board 4 and a plurality of LED chips 5 as light-emitting element ar ⁇ ranged on the printed circuit board 4. In addition, a lens 1 is arranged over the LED chips 5 formed with a plurality of lens sub-units la each corresponding to one LED chip 5. It can be seen further from Fig. 1 that a light emergent surface 2 of each lens sub-unit la is a curved, thus, an unsmooth structure is formed on a side surface of the whole lens 1 op ⁇ posite to the LED chips 5.
  • the lens 1 In order to protect the lens 1, the lens 1 is enclosed in a housing of the illuminating de- vice with a transparent protective cover 6 over the lens 1.
  • the transparent protective cover 6 cannot serve any optical function, and on the contrary, it reduces the optical effect of the streetlamp on the whole.
  • droplets may converge on each light emergent surface, and this will significantly affect the light distribution performance of the streetlamp and change the light shape formed by the light from the streetlamp.
  • the outer surface of the lens is hard to be cleaned in maintenance as it is irregular.
  • Fig. 3 is a schematic diagram of an illuminating device of the present invention. It can be seen from Fig. 3 that the illuminating device comprises a light-emitting assembly, and the light-emitting assembly comprises a printed circuit board 4 and a plurality of LED chips 5 as light emitting element, wherein the LED chips 5 are placed in a rectangular pattern in the Fig.3. However, the LED chips 5 could also be placed in another pattern like hexagonal or even an arbitrary place- ment .
  • a lens 1 of the present invention com ⁇ prises a plurality of light incident surfaces 2 and a light emergent surface 3, wherein the light incident surfaces 2 are curved towards the light emergent surface 3, respectively, to form accommodating cavities for respectively accommodating respective LED chips 5 of the illuminating device, wherein each accommodating cavity is accommodated with one LED chip 5.
  • the light emergent surface 3 of the lens 1 is configured to be a flat surface.
  • the light incident surfaces 2 are formed on one side of the base and the light emergent surface 3 is formed on the other side opposite to the one side of the base and the light inci ⁇ dent surfaces 2 are formed on the one side of the base by an array.
  • the lens 1 per se serves as a protective cover of electronic assemblies in the illuminating device, and it also can provide expected light shapes to satisfy illuminating requirements in differ ⁇ ent applications.
  • the light emergent surface 3 is a flat surface, in daily use, droplets, particles, dusts, etc. will be hard to converge on the light emergent surface 3 of the lens 1, so that the light distribution performance of the illuminating device will not be affected, the light shape formed by light from the illuminating device will not be changed.
  • the outer surface of the lens 1 is regular flat surface, it is quite easy to be cleaned in main ⁇ tenance .
  • Fig. 4a-Fig. 4b are different section views of the lens 1 of the present invention. It can be seen from Fig. 4a that a curve of the light incident surface 2 on a cross section A is mirror symmetrical with respect to a longitudinal section B perpendicular to the cross section A. And it can be seen from Fig. 4b that a curve of the light incident surface 2 on the longitudinal section B is asymmetrical with respect to the cross section A so as to obtain expected light shapes. For example, when the illuminating device is used as streetlamp, a batwing light shape can be obtained (see Fig. 5) . Moreover, as seen from Fig. 4a and Fig. 4b, the light emergent surface 3 is a flat surface.
  • the light emergent surface 2 of the lens 1 of the present invention also can be configured to be spherical or free surface for obtaining expected light shapes.
  • the lens 1 is made from glass or transparent plastic.
  • transparent plastic PMMA or PC may be selected.
  • the present invention may have vari ⁇ ous alterations and changes. Any alterations, equivalent sub ⁇ stitutions, improvements, within the spirit and principle of the present invention, should be covered in the protection scope of the present invention.

Abstract

La présente invention concerne une lentille (1) destinée à un dispositif d'éclairage qui comprend un ensemble électroluminescent, la lentille (1) comprenant une pluralité de surfaces à lumière incidente (2) et une surface à lumière émergente (3), les surfaces à lumière incidente (2) étant incurvées vers la surface à lumière émergente (3), respectivement, pour former des cavités de logement afin de loger respectivement un élément électroluminescent des ensembles électroluminescents et la surface à lumière émergente (3) étant conçue pour être une surface plate. En outre, l'invention concerne un dispositif d'éclairage qui comporte ladite lentille.
PCT/EP2013/050649 2012-01-16 2013-01-15 Lentille et dispositif d'éclairage doté de la lentille WO2013107728A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210012440XA CN103206667A (zh) 2012-01-16 2012-01-16 透镜和具有该透镜的照明装置
CN201210012440.X 2012-01-16

Publications (1)

Publication Number Publication Date
WO2013107728A1 true WO2013107728A1 (fr) 2013-07-25

Family

ID=47632984

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/050649 WO2013107728A1 (fr) 2012-01-16 2013-01-15 Lentille et dispositif d'éclairage doté de la lentille

Country Status (2)

Country Link
CN (1) CN103206667A (fr)
WO (1) WO2013107728A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104896328B (zh) * 2015-05-22 2018-10-26 重庆四联光电科技有限公司 一种led灯具防尘模组透镜
CN105156990B (zh) * 2015-06-17 2021-09-21 欧普照明股份有限公司 Led路灯透镜单元、模组及具有该led路灯透镜模组的路灯
CN113551187A (zh) * 2021-07-14 2021-10-26 宁波市爱使电器有限公司 一种led路灯

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19621148A1 (de) * 1996-05-14 1997-12-04 Magna Reflex Holding Gmbh Leuchtelement
WO2003044870A1 (fr) * 2001-11-22 2003-05-30 Mireille Georges Dispositif optique d'eclairage a diodes electroluminescentes
EP1617239A1 (fr) * 2004-07-16 2006-01-18 Enplas Corporation Source lumineuse plane, unité d'éclairage et dispositif de contrôle de flux lumineux
US20090185107A1 (en) * 2008-01-18 2009-07-23 Panagotacos George W Low profile backlight apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19621148A1 (de) * 1996-05-14 1997-12-04 Magna Reflex Holding Gmbh Leuchtelement
WO2003044870A1 (fr) * 2001-11-22 2003-05-30 Mireille Georges Dispositif optique d'eclairage a diodes electroluminescentes
EP1617239A1 (fr) * 2004-07-16 2006-01-18 Enplas Corporation Source lumineuse plane, unité d'éclairage et dispositif de contrôle de flux lumineux
US20090185107A1 (en) * 2008-01-18 2009-07-23 Panagotacos George W Low profile backlight apparatus

Also Published As

Publication number Publication date
CN103206667A (zh) 2013-07-17

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