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Method and system for controlling illumination intensity of LED table lamp

A technology of LED desk lamp and light intensity, applied in the direction of electrical components, etc., can solve problems such as affecting eyesight and eye fatigue

Pending Publication Date: 2020-04-24
APT ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different materials and colors of paper absorb and reflect light differently, so that the intensity of each light system required when the reflected light on the reading material is close to the saturation of the sunlight spectrum is also different. The system and light intensity are fixed. When the fixed light of the LED light is not suitable for a certain type of paper reading material, the glare caused by the excessive reflection or diffuse reflection of the paper will cause excessive eye fatigue and seriously affect the vision, especially vision for young children

Method used

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  • Method and system for controlling illumination intensity of LED table lamp
  • Method and system for controlling illumination intensity of LED table lamp
  • Method and system for controlling illumination intensity of LED table lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1 As shown, this embodiment discloses a method for controlling the light intensity of an LED desk lamp, the steps are as follows:

[0056] S1: emit a standard white beam to the surface of the paper 4, wherein the standard white beam is perpendicular to the surface of the paper 4;

[0057] S2: Obtain the reflected light of the standard white light beam on the surface of the paper 4;

[0058] S3: According to the CIE coordinates of reflected light (X n , Y n ), to obtain the reflected light at standard CIE coordinates (X 0 ,Y 0 The offset (X c , Y c ), offset (X c , Y c ) corresponding to the spectrum F C and the intensity of reflected light Light intensity relative to standard white beam The amount of change

[0059] S4: According to (X c , Y c ), F C , Control the driving current of warm light LED32, cold light LED33, red light LED34, blue light LED36 and green light LED35 in the LED desk lamp, so that the light beams sent by warm lig...

Embodiment 2

[0088] Such as figure 2 As shown, this embodiment discloses a system for controlling the light intensity of an LED desk lamp, including:

[0089] Several LEDs, including warm LED32, cold LED33, red LED34, blue LED36, green LED35;

[0090] The emitting probe 311 is used to emit a standard white beam to the surface of the paper 4, and the standard white beam is perpendicular to the surface of the paper 4;

[0091] The receiving probe 312 is used to receive the reflected light of the standard white light beam on the surface of the paper 4;

[0092] Signal processor 1, is connected with transmitting probe 311, receiving probe 312, is used for according to the CIE coordinate of reflected light (X n , Y n ), to obtain the reflected light at standard CIE coordinates (X 0 ,Y 0 The offset (X c , Y c ), and (X c , Y c ) corresponding to the spectrum F C , the intensity of reflected light Light intensity relative to standard white beam The amount of change

[0093] Dimm...

Embodiment 3

[0113] This embodiment discloses an LED desk lamp, which includes the system of the second embodiment,

[0114] In the present embodiment, comprise detection probe 31, this detection probe 31 comprises transmitting probe 311, receiving probe 312, fixing base, hemispherical lens 313, transmitting probe 311, receiving probe 312, hemispherical lens 313 are installed on the fixing base, launch The probe 311 and the receiving probe 312 are located in the hemispherical lens 313

[0115] In the present embodiment, also comprise PCB base 3, LED and detection probe 31 are installed on PCB base 3; It is arranged at both ends of the PCB base 3 , and the warm light LED 32 and the cold light LED 33 are arranged at intervals; the detection probe 31 is installed at the end of the PCB base 3 .

[0116] The LED desk lamp in this embodiment includes a support base 6, a bendable support rod 5 and a lampshade 7; one end of the support rod 5 is fixed on the support base 6, and the other end is co...

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Abstract

The invention relates to the field of movable lighting, and particularly discloses a method and a system for controlling the illumination intensity of an LED table lamp. The method comprises the following steps: transmitting a standard white light beam to the surface of paper, and enabling the standard white light beam to be perpendicular to the surface of the paper; according to the CIE coordinate (Xn, Yn) of reflected light, acquiring the offset (Xc, Yc) of the reflected light in a standard CIE coordinate (X0, X0), the spectrum FC corresponding to the offset (Xc, Yc) and the variation (see the specification for the expression) of the reflected light intensity relative to that of the standard white light beam; and controlling the driving currents of a warm light LED, a cold light LED, a red light LED, a blue light LED and a green light LED in the LED table lamp according to the (Xc, Yc), FC and the variation of the reflected light intensity. By obtaining (Xc, Yc) of the reflected light and the variation of the reflected light intensity and controlling the luminous intensity of the warm light LED, the cold light LED, the red light LED, the blue light LED and the green light LED according to (Xc, Yc), FC and the variation of the reflected light intensity, the spectrum corresponding to the reflected light on the paper is close to the sunlight spectrum saturation, and excessive fatigue of eyes caused by glare due to excessive reflection or diffuse reflection is prevented.

Description

technical field [0001] The invention relates to the field of movable lighting, in particular to a method and system for controlling the light intensity of an LED desk lamp. Background technique [0002] With the progress of society, LED lighting table lamps are deeply loved by readers and students because of their energy saving, mobility, and adjustable swing arms, and they have become the best choice for desktop reading auxiliary light sources. At present, the reading materials on the market are becoming more and more diverse. Even if they are all paper-based reading materials, their materials and colors are not the same. Different materials and colors of paper absorb and reflect light differently, so that the intensity of each light system required when the reflected light on the reading material is close to the saturation of the sunlight spectrum is also different. The system and light intensity are fixed. When the fixed light of the LED light is not suitable for a certa...

Claims

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Application Information

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IPC IPC(8): H05B45/12H05B45/30
CPCY02B20/40
Inventor 刘贤金郑永生侯宇曾照明肖国伟
Owner APT ELECTRONICS
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