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Illuminating device

A technology of lighting equipment and lighting components, applied in lighting and heating equipment, lighting devices, agricultural machinery and equipment, etc., can solve problems such as manual inspection of plant growth

Inactive Publication Date: 2009-11-11
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, manual inspection of plant growth is next to impossible under these artificial lighting conditions

Method used

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Examples

Experimental program
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Embodiment Construction

[0027] figure 1 A schematic diagram of a lighting device 10 with a lighting element 20 and a testing element 30 is shown. Arranged below the lighting device 10 is an object 15 , which in the shown case is a carrier element 18 for the soil or substrate in which the plants 17 are embedded. The lighting element 20 includes a plurality of light emitting devices 21 and a third light emitting device 23 . As indicated by the different types of lines, the first light emitting means 21 and the third light emitting means 23 emit light with different spectra 22 , 24 . in such as figure 1 In the horticultural application shown, it is suitable to emit light in the blue absorption region and the red absorption region, since only these two light regions are absorbed by chlorophyll A and B. Therefore, the synthetic light of blue and red light is sufficient for the growth of plants 17 . A disadvantage of this spectrum is that the inspector cannot determine the health condition of the plant...

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PUM

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Abstract

The invention relates to an illuminating device (10) for illuminating an object, with a lighting element (20) and an inspection element (30), wherein the lighting element (20) comprises at least one first light emitting mean (21), wherein the first light emitting mean (21) is emitting light with a first spectrum (22), wherein the inspection element (30) comprises at least one second light emitting mean (31), wherein the second light emitting mean (31) is emitting light with a second spectrum (32), wherein the second spectrum (32) is essentially separated from the first spectrum (22), with an illuminating mode, operating only the lighting element (20), with an inspection mode, operating the lighting element (20) and the inspection element, and the superposition of the light of the first (21) and the second light emitting mean (31) yields a result light.

Description

technical field [0001] The invention relates to a lighting device for lighting an object. Background technique [0002] In horticultural plant production, greenhouses are often equipped with artificial light sources to extend the length of the day to allow plants to grow over extended periods of the year. This allows producers to bring plants to market on demand. Furthermore, artificial light is used in greenhouses without exceeding daylight, where the plants are usually grown with full control over the luminous flux and all other relevant parameters for growth. Thus, the growth of plants depends not only on the amount of light but also on the spectral distribution of light. It is well known that chlorophyll, included in the green leaves of plants, performs photosynthesis, absorbing selective blue and red components of sunlight. Therefore, high-efficiency lamps should primarily create an emission spectrum that coincides with the absorption spectrum of the most common pigm...

Claims

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Application Information

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IPC IPC(8): F21S8/00G01N21/88A01G7/04F21Y101/00
CPCG01N2021/8466G01N21/6486A01G9/20A01G7/045H05B45/22Y02P60/14
Inventor W·O·巴德H·-P·洛布尔J·H·A·M·雅各布斯
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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