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LED module

A technology of light-emitting diodes and lenses, applied in lighting and heating equipment, instruments, electrical components, etc., can solve the problem of limited maximum size of light-emitting diode modules

Inactive Publication Date: 2007-08-01
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to this, the maximum size of LED modules also remains limited

Method used

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Embodiment Construction

[0041] Referring to FIGS. 1A and 1B , which respectively illustrate prior art and collimating elements described in the above-mentioned WO-A00 / 42,062, an LED light source or module 1 is associated with an embodiment of a collimating element 2 . The light-emitting diode 1 is placed in the recess 4 of the bowl-shaped collimating element 2 . The collimating element 2 has an optical axis and includes an element body 4 for emitting light during operation. In the example of FIG. 1A , the body 5 of the light-emitting diode 1 is provided with a light-transmitting housing 6 , for example in the form of a lens. In the example of FIG. 1B, the LED is represented by a dot. The collimating element 2 has an optical axis which coincides with the optical axis of the light-emitting diode 1 . The shape of the collimating element 2 is chosen such that the light emitted from the light-emitting diode 1 is emitted by the optical system in a direction parallel to the optical axis of the collimating...

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Abstract

An LED module that includes an LED (light-emitting diode) (1) and a rotationally symmetrical, bowl-shaped collimator lens (2) is provided. The collimator lens has an inner refractive wall (9), an outer reflective wall (7), a first surface (8) having an entrance aperture (3) with a recess (4) in which the LED is situated and which collimator lens is also provided with a second surface (10) from which light generated by the LED emerges, the normal to the surface extending substantially parallel to the axis of symmetry of the lens, and the LED module also includes one or more of the following structures : (1) a conic wall portion of the recess (4) of the inner refractive wall (9) at the entrance aperture (3) that includes a curved portion (9'), and an outer reflective wall (7) so configured in accordance with the structure of the inner refractive wall (9) to achieve substantial collimation of a source of light (1) at the entrance aperture; and / or (2) a first surface (8) of the lens (2) that is recessed away from the LED source (1); and / or (3) two surfaces (8), (11) of said refractive wall (9) between which the refractive function of said refractive wall (9) is divided. The LED module offers an improvement in the performance of the Flat top Tulip Collimator known in terms of reduced size, beam divergence, beam uniformity, and to some degree efficiency. Moreover, it allows a wider variety of choices in optimizing various performance characteristics, and this in turn allows more flexibility in the structure design.

Description

technical field [0001] The present invention relates to a light emitting diode module comprising a light emitting diode and a rotatably symmetrical bowl-shaped collimator lens, the collimator lens is provided with a recess for accommodating the light emitting diode, and the collimator lens is also provided with a plane from which The light generated by the light-emitting diodes is emitted by a plane whose normal runs substantially parallel to the axis of symmetry of the lens. The invention also relates to a lighting fixture provided with some of said LED modules. Background technique [0002] Light-emitting diode modules of the type mentioned in the opening paragraph are known per se. Such a light emitting diode module is described, for example, in the English abstract of Japanese patent application JP61-147,585. The LED module consists of a LED mounted on a base and seated in the recess of a bowl-shaped collimator lens. This lens is rotationally ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/00F21V5/04F21V7/00G02B3/00G02B6/42H01L33/54H01L33/58H01L33/60
CPCF21V5/04H01L33/54G02B3/00G02B6/4206F21V7/0091H01L33/58F21Y2101/02H01L33/60F21Y2115/10
Inventor T·M·马沙尔M·D·帕斯利
Owner SIGNIFY HLDG BV