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Optical lighting device

A technology for lighting equipment and optical transparency, which is applied in lighting and heating equipment, lighting devices, optical radiation measurement, etc., and can solve problems such as unwanted shading effects and inconvenient placement of sensors

Inactive Publication Date: 2009-08-12
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the precise optical functionality of these sensors is limited to small angles of incidence of only about 10°
This makes the placement of the sensor relative to the LED light source very inconvenient, as the sensor and light source have to be placed face to face, i.e. 180° relative to each other
This creates an unwanted shadowing effect and requires additional installation of support equipment including electrical connections for the sensors

Method used

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  • Optical lighting device
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Examples

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Embodiment Construction

[0028] figure 1 A schematic diagram showing an example of the proposed optical illumination device. The optical lighting device consists of a plurality of LED light sources 2 mounted on the same substrate 1 (eg a printed circuit board). In this embodiment, in order to simplify the situation, only two LED light sources 2 are shown. RGB sensors 4 are mounted on the same substrate 1, laterally between the LED light sources. The LED light source 2 and the RGB sensor 4 are surrounded by the light reflector 3 of the optical lighting device. Usually such a light reflector 3 is adapted to reflect and deflect the light of the LED light source 2 in such a way that the light output (luminous flux) of said optical lighting device is maximized, and / or that the reflection angle meets a given requirement, for example Constrain the beam to a cone beam of 10°, 45°, etc.

[0029] The RGB sensor 4 comprises, in a known manner, an interference filter located in its illumination sensitive area...

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Abstract

The present invention relates to a optical lighting device comprising several solid state light sources (2) and at least one optical sensor (4) arranged between the solid state light sources (2) in approximately the same plane. An optical deflection unit (5, 13) is mounted in front of the sensor (4) and designed to deflect light laterally emitted by the solid state light sources (2) to the optical sensor (4). The deflection unit (5, 13) is designed.to inhibit the transmission of ambient light to the optical sensor (4).

Description

technical field [0001] The present invention relates to the field of optical lighting devices comprising a plurality of solid state light sources, such as light emitting diodes (LEDs), located in a flat or curved surface. Such lighting devices are used in any kind of lighting application, for example in the automotive field, in the field of professional lighting or in the field of consumer applications. Background technique [0002] Conventional lighting devices such as, for example, signal lights are increasingly being equipped with LED light sources. The main advantages of these LED light sources are their much higher efficiency and their increased lifetime. Due to the small size of LEDs and their flexible form factor, novel and interesting opportunities are offered to lamp designers. [0003] The original applications of LEDs (such as small signal lights) have been greatly expanded. Combinations of multiple LEDs in series and / or in parallel are often used to increase l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J1/04H05B33/08H05B44/00
CPCG01J1/0295F21V23/0442G01J1/0407H05B33/0869G01J1/04G01J1/0488G01J1/0474G01J1/4204F21Y2101/02G01J2001/4247H05B33/0803G01J1/0204G01J1/0414F21Y2115/10F21V23/0457F21V23/0464H05B45/22
Inventor A·希尔格斯
Owner KONINKLIJKE PHILIPS ELECTRONICS NV