WO2016041430A1 - Lampe à faisceau étroit à del - Google Patents

Lampe à faisceau étroit à del Download PDF

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Publication number
WO2016041430A1
WO2016041430A1 PCT/CN2015/087579 CN2015087579W WO2016041430A1 WO 2016041430 A1 WO2016041430 A1 WO 2016041430A1 CN 2015087579 W CN2015087579 W CN 2015087579W WO 2016041430 A1 WO2016041430 A1 WO 2016041430A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
optical axis
led
refracted
light source
Prior art date
Application number
PCT/CN2015/087579
Other languages
English (en)
Chinese (zh)
Inventor
王万林
邓诗涛
Original Assignee
欧普照明股份有限公司
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 claimed from CN201420535919.6U external-priority patent/CN204141320U/zh
Priority claimed from CN201410474943.8A external-priority patent/CN105485557A/zh
Application filed by 欧普照明股份有限公司 filed Critical 欧普照明股份有限公司
Publication of WO2016041430A1 publication Critical patent/WO2016041430A1/fr

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • 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

Definitions

  • the invention relates to a lighting device, in particular to an LED spotlight.
  • LEDs have been popularized for lighting fixtures.
  • the color quality of LEDs is required to be higher and higher in specific illuminations, and the light color distribution requirements of the object surface are getting higher and higher to meet the humanized needs of the face.
  • the LED is 180° light, which has the characteristics of severe glare and uneven transition of the spot effect.
  • a narrow angle beam is needed, which requires the design of the optical system of the LED with the focused beam.
  • the invention discloses an LED spotlight, comprising: an LED light source, a collecting lens and a reflecting cup disposed outside the collecting lens, the collecting lens comprising an inner surface close to the LED light source and away from the LED light source An outer surface and an optical axis at a center of the concentrating lens; the inner surface including a toroid surrounding the optical axis and a top surface through which the optical axis passes; the light incident to the torus
  • the reflecting cup direction is refracted, and light incident on the top surface is refracted toward the optical axis; light transmitted from the annular surface is refracted through the outer surface and then emitted to the reflective cup, and the reflective cup is Reflected parallel to a first outgoing light of the optical axis; and light transmitted from the top surface is refracted by the outer surface and exits to form a second outgoing light that is adjacent to and parallel to the optical axis.
  • the outer surface is semi-circular or semi-circular with an axis of symmetry of the optical axis.
  • the top surface is a convex surface that is convex toward the LED light source.
  • the portion of the outer surface on which the second outgoing light is emitted is in a convex direction away from the convex surface of the LED light source.
  • the convex surface is made by matte sanding.
  • the ratio of the width of the LED light source to the width of the cavity formed by the collecting lens facing the inner surface of the LED light source is between 50% and 75%.
  • the angle of light refracted from the top surface is 0-20° with respect to the optical axis; the angle of light refracted from the torus is 20-70° from the optical axis.
  • the annulus is a cylindrical surface.
  • the top surface and the toroid are connected to a junction point; when the distance between the junction point and the LED light source increases, an angle between the light refracted by the top surface and the optical axis Increasing, an angle between the light refracted by the torus and the optical axis is decreased; when the distance between the boundary point and the LED light source is decreased, the light refracted by the top surface and the optical axis The angle of the light is reduced, and the angle between the light refracted by the torus and the optical axis is increased.
  • the LED light source is plural, and each of the LED light sources is provided with one of the collecting lenses; and the plurality of collecting lenses form a collecting lens group.
  • the light center obtained after the aggregation has high light intensity, low glare value and uniform spot;
  • the size of the reflector cup is greatly reduced, reducing the space occupied.
  • FIG. 1 is a schematic view showing the structure and light-emitting of an LED spotlight according to a preferred embodiment of the present invention.
  • Figure 2a is a first perspective view of the collecting lens of the present invention
  • Figure 2b is a second perspective view of the concentrating lens of the present invention.
  • the LED spotlight includes an LED light source 30 disposed inside, a condenser lens 10 disposed outside the LED light source 30 for collecting light emitted from the LED light source 30, and a light collecting lens 10 disposed outside the collecting lens 10 for transmitting the light from the collecting lens 10.
  • the reflective cup 20 is reflected by light.
  • the concentrating lens 10 includes an inner surface 11 adjacent to the LED light source 30, an outer surface 12 away from the LED light source 30, and an optical axis 13 at the center of the concentrating lens 10.
  • the light is first incident from the inner surface 11 into the collecting lens 10 and then emitted from the outer surface 12.
  • the concentrating lens 10 is disposed in an accommodating space formed by the reflecting cup 20 by a mounting base (not shown), and the reflecting cup 20 is also supported on the mounting base.
  • the transmitted and reflected light should be emitted independently of each other.
  • the concentrating lens 10 is configured as follows: the inner surface 11 includes a toroidal surface 111 and a top surface 112, the annular surface 111 is disposed around the optical axis 13 so as to surround the LED light source 30, and the optical axis 13 passes through the top surface 112, ie The top surface 112 faces the LED light source 30 with a slight offset from the LED light source 30 or with the optical axis 13. Due to different positional settings of different transmissive surfaces and the principle of refraction of light, the light incident on the toroidal surface 111 and the top surface 112 is deflected in a different direction after the first refraction.
  • the light incident on the toroidal surface 111 on the side is refracted toward the reflection cup 20, and the light incident on the top surface 112 of the end surface is refracted toward the optical axis 13. Then, after the first refraction, the optical paths of the light split to the toroidal surface 111 and the top surface 112 have been separated.
  • the outer surface 12 is twice refracted, and the light transmitted from the annular surface 111 is refracted by the outer surface 12 and then emitted to the reflective cup 20, and transmitted from the top surface 112.
  • the light is refracted through the outer surface 12 and is emitted from the light exit opening of the reflector cup 20.
  • the optical paths of the light split to the toroidal surface 111 and the top surface 112 are further separated, and the light transmitted by the annulus 111 is incident at an angle to the optical axis 13 to the reflective cup 20, and passes through the reflective cup 20
  • the first outgoing light A which is reflected and collimated to exit the parallel optical axis 13, the light transmitted by the top surface 112 forms a second outgoing light B near the optical axis 13 and parallel to the optical axis 13 after secondary refraction.
  • the first outgoing light is concentrated on a portion of the reflective cup 20 near the outer edge to form external concentrated light; and the second outgoing light is concentrated on a portion close to the optical axis 13 to form a central concentrated light having a higher light intensity.
  • the light from the LED light source 30 is separated into two beams, and each light is collected to achieve a concentrated distribution.
  • the light transmitted from the annulus 111 is more deflected toward the reflecting cup 20, so that the reflection incident on the reflecting cup 20 is closer to the bottom of the reflecting cup 20.
  • the reflection point is also relatively located outside the reflective cup 20, and when the reflection point is near the bottom, The size of the reflector cup 20 can be reduced a lot.
  • the angle of deflection of the refracted light is 10-40°, and the angle between the light projected onto the reflective cup 20 and the optical axis 13 is 50-80°, and accordingly, The angle between the light and the normal direction of the surface of the reflector cup 20 (i.e., the angle of incidence) is reduced. As the angle of incidence decreases and the point of reflection is closer to the outer surface 12, the size of the reflector cup 20 can be reduced.
  • the outer surface 12 may also be formed by symmetrical rotation of any free curved surface to perform secondary refraction of the emitted light, but the shape of the curved surface should ensure that the light reflected from the reflective cup 20 and the light emitted from the outer surface 12 are parallel to The first outgoing light A and the second outgoing light B of the optical axis 13.
  • the top surface 112 may be configured as a convex surface that is convex toward the LED light source 30.
  • the surface convex surface is used to enhance the refraction effect of the light incident on the LED light source 30 of the top surface 112, so that the center outgoing light is closer to the optical axis 13, and the center outgoing light is narrower, which can be applied to occasions requiring emphasis illumination.
  • the width of the central narrow beam and the peripheral wide beam are adjustable. Specifically, since the boundary between the incident top surface 112 and the annular surface 111 is at the connection surface between the center of the LED light source 30 and the boundary line between the top surface 112 and the annular surface 111, the area of the top surface 112 can be enlarged or reduced. The angle between the optical axis 13 and the above-mentioned interface is enlarged or reduced, and the larger the angle is, the wider the transmitted light is, and vice versa.
  • Another adjustment may be to adjust the height of the annulus 111.
  • the top surface 112 and the annular surface 111 are connected to a junction point, and the cross section of the collecting lens formed by the top surface 112 and the annular surface 111 can be regarded as a substantially rectangular shape.
  • the width of the annular surface 111 is fixed, that is, When the bottom of the rectangle is constant, the distance between the junction point and the LED light source 30 (ie, the height of the top surface 112 or the height of the rectangle) increases or decreases, and the diagonal of the rectangle (ie, the separation into the top surface 112)
  • the angle between the boundary line of the toroid 111 and the top surface 112 also increases or decreases.
  • the angle between the diagonal of the rectangle and the top surface 112 increases, the angle between the light refracted by the top surface 112 and the optical axis 13 increases, and the angle between the light refracted by the annular surface 111 and the optical axis 13 decreases.
  • the angle between the diagonal of the rectangle and the top surface 112 is decreased, the angle between the light refracted by the top surface 112 and the optical axis 13 is decreased, and the angle between the optical fiber refracted by the annular surface 111 and the optical axis 13 is increased. Therefore, in the above embodiment, the arrangement of 20° as the boundary angle separating the first outgoing light A and the second outgoing light B is variable, and can be freely selected between 0 and 90° depending on the actual situation.
  • a collecting lens 10 in the above embodiment is provided for each of the LED light sources 30, and the plurality of collecting lenses 10 form a collecting lens group.
  • the concentrating lens group can be integrally formed and matched on the corresponding LED light source 30.

Landscapes

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

Abstract

L'invention porte sur une lampe à faisceau étroit à diode électroluminescente (DEL), comprenant une source de lumière à DEL (30), une lentille condensatrice (10) et une coupelle réfléchissante (20) disposée à l'extérieur de la lentille condensatrice. La lentille condensatrice comprend une surface intérieure (11) proche de la source de lumière à DEL, une surface extérieure (12) éloignée de la source de lumière à DEL et un axe optique (13) situé au centre de la lentille condensatrice. La surface intérieure comprend une surface annulaire (111) autour de l'axe optique et une surface supérieure (112) dont le centre est pénétré par l'axe optique. La lumière incidente sur la surface annulaire est réfractée vers la coupelle réfléchissante, et la lumière incidente sur la surface supérieure est réfractée vers l'axe optique. La lumière transmise par la surface annulaire est réfractée par la surface extérieure et émerge ensuite vers la coupelle réfléchissante, et la coupelle réfléchissante réfléchit une première lumière émergente (A) qui est parallèle à l'axe optique. La lumière transmise par la surface supérieure est réfractée par la surface extérieure et émerge ensuite pour former une seconde lumière émergente (B) qui est proche de l'axe optique et parallèle à lui. La lampe à faisceau étroit à DEL permet d'obtenir, par coopération de réflexion et de transmission, une lumière à faisceau étroit qui présente une forte intensité de lumière centrale, un faible taux d'éblouissement et une couleur de lumière uniforme.
PCT/CN2015/087579 2014-09-17 2015-08-20 Lampe à faisceau étroit à del WO2016041430A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201420535919.6U CN204141320U (zh) 2014-09-17 2014-09-17 一种led聚光灯
CN201420535919.6 2014-09-17
CN201410474943.8 2014-09-17
CN201410474943.8A CN105485557A (zh) 2014-09-17 2014-09-17 一种led聚光灯

Publications (1)

Publication Number Publication Date
WO2016041430A1 true WO2016041430A1 (fr) 2016-03-24

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Application Number Title Priority Date Filing Date
PCT/CN2015/087579 WO2016041430A1 (fr) 2014-09-17 2015-08-20 Lampe à faisceau étroit à del

Country Status (1)

Country Link
WO (1) WO2016041430A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114353013A (zh) * 2020-10-14 2022-04-15 台州市远大工业设计有限公司 一种led配光装置及用于替代卤素灯丝的led组合光源
CN114963082A (zh) * 2021-09-16 2022-08-30 青岛易来智能科技股份有限公司 透镜及照明设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2829103Y (zh) * 2005-05-09 2006-10-18 葛世潮 高效率发光二极管
CN201819153U (zh) * 2010-07-27 2011-05-04 叶秀敏 多功能光学组套
CN202017920U (zh) * 2011-02-14 2011-10-26 上海开特照明设备有限公司 一种宽幅照明的led照明灯及灯具
CN103307552A (zh) * 2013-06-20 2013-09-18 邱吉鼎 Led灯具的调光装置及led灯具
CN104024728A (zh) * 2011-09-09 2014-09-03 吉可多公司 具有清晰限定的场角的基于led光源
CN204141320U (zh) * 2014-09-17 2015-02-04 欧普照明股份有限公司 一种led聚光灯

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2829103Y (zh) * 2005-05-09 2006-10-18 葛世潮 高效率发光二极管
CN201819153U (zh) * 2010-07-27 2011-05-04 叶秀敏 多功能光学组套
CN202017920U (zh) * 2011-02-14 2011-10-26 上海开特照明设备有限公司 一种宽幅照明的led照明灯及灯具
CN104024728A (zh) * 2011-09-09 2014-09-03 吉可多公司 具有清晰限定的场角的基于led光源
CN103307552A (zh) * 2013-06-20 2013-09-18 邱吉鼎 Led灯具的调光装置及led灯具
CN204141320U (zh) * 2014-09-17 2015-02-04 欧普照明股份有限公司 一种led聚光灯

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114353013A (zh) * 2020-10-14 2022-04-15 台州市远大工业设计有限公司 一种led配光装置及用于替代卤素灯丝的led组合光源
CN114963082A (zh) * 2021-09-16 2022-08-30 青岛易来智能科技股份有限公司 透镜及照明设备
CN114963082B (zh) * 2021-09-16 2024-02-06 青岛易来智能科技股份有限公司 透镜及照明设备

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