LED capable of removing harmful blue light and LED illumination apparatus

An LED lighting and blue light technology, applied in electrical components, electrical solid devices, circuits, etc., can solve the problems of human eye hazards, low correlated color temperature and color rendering index, unfavorable reading, etc., to reduce radiation dose, remove harmful blue light, reduce Effects of blue light hazard

Inactive Publication Date: 2016-12-07
ILLUMINA MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, in the case of high correlated color temperature (rich blue light), the environment with high brightness and long-term use is most likely to cause harm to human eyes; although white LEDs with low correlated color temperature (<2700K) have very low blue light radiation energy, blue light is harmful Small, but the correlated color temperature and color rendering index are too low for reading

Method used

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  • LED capable of removing harmful blue light and LED illumination apparatus
  • LED capable of removing harmful blue light and LED illumination apparatus
  • LED capable of removing harmful blue light and LED illumination apparatus

Examples

Experimental program
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Embodiment 1

[0027] like figure 1 , Image 6 As shown, the LED that removes harmful blue light in this embodiment is a blue light LED, including a blue light LED bare chip 1 and a lens 5, the lens 5 envelops the blue light LED bare chip 1, and the lens 5 A high-pass filter 2 for filtering short-wave blue light below 460nm is attached and fixed on the inner wall. This embodiment is a blue LED that removes short-wave harmful blue light below 460nm. from Image 6 It can be seen from the transmittance function curve of the high-pass filter that the present invention has a high filtering rate of short-wave harmful blue light below 460nm.

Embodiment 2

[0029] like figure 2 , Figure 5 , Image 6 As shown, the LED for removing harmful blue light in this embodiment is a synthetic white light LED, including a blue LED bare chip 1 and a lens 5, the lens 5 envelops the blue light LED bare chip 1, and the lens 5 The outer periphery of the blue LED bare chip 1 is covered with yellow phosphor powder 3, so that the LED that removes harmful blue light emits white light, and the outer wall of the lens 5 is pasted and fixed on the outer wall of the lens 5 to filter out short-wave blue light below 460nm. Optical filter 2, the LED for removing harmful blue light in this embodiment is a white light LED with high color temperature, and its color temperature is ≥5000K, and the LED for removing harmful blue light in this embodiment is a white light LED with a high color rendering index, and its color rendering index is ≥90, this embodiment is a white LED that removes short-wave harmful blue light below 460nm. In this embodiment, on the ba...

Embodiment 3

[0031] like figure 1 , image 3 , Image 6 , Figure 7 As shown, this embodiment is an LED lighting device, including six low color temperature white LEDs 8 and six LEDs 6 that remove harmful blue light in Embodiment 1, the color temperature of the low color temperature white LEDs ≤ 2700K, and the low color temperature The white light LED8 is a white light LED with a high color rendering index, and its color rendering index is greater than or equal to 90. After the low color temperature white light LED8 is mixed with the light emitted by the harmful blue light removal LED6, a white light with a color temperature of 3000-5000K is formed. The low color temperature white light LED8 is connected in series on the circuit board to form a first current channel, and a plurality of LEDs for removing harmful blue light are connected in series on the circuit board to form a second current channel, and the first current channel and the first current channel are connected in series. The...

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Abstract

The invention discloses an LED capable of removing harmful blue light and an LED illumination apparatus. According to a first scheme, the LED illumination apparatus comprises at least one low-color-temperature white light LED (8) and at least one LED (6) capable of removing harmful blue light, wherein the lights of the two LEDs are mixed to form white light at a color temperature of 3,000-5,000K; each LED (6) capable of removing harmful blue light comprises a blue light LED bare chip (1) and a lens (5), wherein a high-pass light filter (2) which is used for filtering short-wave blue light of less than 460nm is glued and fixed on the inner side wall or the outer side wall of the lens (5); according to a second scheme, the LED illumination apparatus comprises the at least one LED capable of removing harmful blue light, wherein each LED capable of removing harmful blue light comprises the blue light LED bare chip (1) and the lens (5); yellow fluorescent powder (3) covers the periphery of the blue light LED bare chip (1) in the lens (5) to enable the LED capable of removing harmful blue light to give out white light; and the high-pass light filter (2) which is used for filtering short-wave blue light of less than 460nm is glued and fixed on the inner side wall or the outer side wall of the lens (5). The LED and the LED illumination apparatus can be widely applied to the LED illumination field.

Description

technical field [0001] The invention relates to an LED for removing harmful blue light; in addition, the invention also relates to an LED lighting device. Background technique [0002] At present, the most common way for light-emitting diodes (that is, LEDs) to be used for lighting is to use the blue light emitted by the blue chip to excite the phosphor to emit yellow light and then mix it with the remaining blue light of the chip to form white light. Such a light-emitting mechanism has many advantages such as high light efficiency and environmental protection, but because the proportion of blue light is higher than that of traditional light sources, it also hides safety problems and causes blue light hazards. Relevant studies have shown that different wavelengths of blue light have different harmful effects on the human eye, especially short-wave blue light with a wavelength between 435 nm and 440 nm has the greatest harmful effect on the eyes, and this effect gradually dec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/48H01L33/50H01L33/58H01L25/075
CPCH01L33/48H01L25/0753H01L33/505H01L33/58
Inventor 孙亚振张献伟
Owner ILLUMINA MFG
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