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Color temperature-regulable led light

A technology of LED lamps and LED light sources, applied in the field of room lamps, can solve the problems of white LEDs that are not suitable for surgical lighting, difficult to freely set color temperature, etc.

Inactive Publication Date: 2005-02-02
奥村 幸康 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, in order to solve the above-mentioned latter problem, the present inventors obtained as a result of in-depth research that it is not only difficult to freely set the color temperature of the existing LED, but also has problems such as color reproducibility. It can be seen that the existing white LED Not suitable for use as surgical lighting ( Figure 7 Spectrum diagrams of LEDs with InGaN as the light-emitting layer and commercially available white LEDs with YAG:Ce as the phosphor)

Method used

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Embodiment 1

[0059] After combining the blue LED whose emission peak wavelength is adjusted to the blue region of about 450-460nm and the YAG phosphor whose fluorescence peak wavelength can be adjusted to the yellow-green region of about 570nm by excitation of the LED, a white color with a color temperature of about 5000°K is formed. LED(W).

[0060] Next, prepare a first calibration light source and a second calibration light source. The first calibration light source is composed of a blue LED (B) whose active layer is InGaN that can adjust the emission peak wavelength to the blue region of about 470 to 480 nm. The second calibration light source is The orange LED (Am) is composed of AlInGaP whose active layer can adjust the peak wavelength to the orange region of about 590nm.

[0061] Such as Figure 4 As shown, 31 such LEDs are arranged on a substrate. This arrangement is shown in Figure 5, the center (16) and the 1st circle column (10,11,17,22,21,15) and the 3rd circle column (1,2,7,...

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Abstract

A currently-available white LED can be modified to freely set a color temperature as well as to improve a color rendering property. A correction-color LED or LEDs having a peak wavelength in a specific wavelength region in association with a white LED are provided to make a color temperature-regulable LED which permit the correction of not only a color temperature but also a color rendering property by means of color-mixture of the correction-color LED and the white LED considering the color temperature and a spectrum distribution of the white LED. The color temperature-regulable LED is especially useful as an shadowless operating light, a living room light and a decorative light.

Description

technical field [0001] The present invention is suitable for LED lamps with adjustable color temperature, especially suitable for LED shadowless lamps with adjustable color temperature for surgical lighting shadowless lamps, suitable for decorative lamps that can reproduce the color temperature of desired places and can evaluate whether they are most suitable for decoration, A room light suitable for selecting the color temperature of the desired atmosphere. Background technique [0002] Now, halogen lamps are used as shadowless lamps for surgical operations. This type of halogen lamp operates with a DC power supply without flickering, and is set to a color temperature range of 4000°K that is most suitable for Japanese eyes. Reflect more than 90% of visible light, and install a cold light sheet that can transmit more than 90% of heat radiation inside. Once the light from the halogen lamp is reflected on the back, it will transmit more than 90% of visible light. In order not...

Claims

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Application Information

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IPC IPC(8): A61B19/00F21S8/00F21S10/02F21V21/40H01L33/50H05B44/00
CPCF21V21/403F21S10/02H05B33/0842A61B2019/521H05B33/086F21W2131/205F21Y2101/02A61B19/52A61B19/5202F21V23/0435A61B90/36A61B2090/308A61B90/30A61B2090/309F21Y2115/10H05B45/20H05B45/30
Inventor 奥村幸康
Owner 奥村 幸康
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