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Flashlight for automatically adjusting brightness with change of irradiation distance

A technology of automatic adjustment and illumination distance, applied in the field of flashlights, can solve the problem of unable to meet the requirements of constant brightness lighting, and achieve the effect of adjustment and humanized adjustment

Inactive Publication Date: 2016-03-16
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the change or vibration of the light source position, the irradiation distance will change, and the light actually irradiated to the body will increase or decrease, which cannot meet the requirements of constant brightness lighting under certain specific conditions.

Method used

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  • Flashlight for automatically adjusting brightness with change of irradiation distance
  • Flashlight for automatically adjusting brightness with change of irradiation distance
  • Flashlight for automatically adjusting brightness with change of irradiation distance

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Experimental program
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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1-3 As shown, the present invention includes an ultrasonic distance detection module 1, a switch 2, a button 3, a condenser cover 4, a cylinder body 5, an optical filter 6, an LED lamp 7, a front fixing ring 8, a rear fixing ring 9, a circuit board 10, Two No. 1 batteries; wherein, the ultrasonic distance detection module 1 is fixed on the front part of the cylinder body 5; the front fixing ring 8 and the front part of the cylinder body 5 are connected by threads, and the middle part of the front fixing ring 8 is embedded with an optical filter 6 for use To focus the light and make the light soft; the front part of the barrel 5 is fixed with a spotlight cover 4 for converging light; the bottom of the spotlight cover 4 is fixed with an LED light 7; inside the barrel 5 are placed two No. 1 batteries; the middle of the barrel 5 Embedde...

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Abstract

The invention provides a flashlight for automatically adjusting brightness with the change of an irradiation distance, and discloses a light source for automatically adjusting the brightness with the change of the irradiation distance. The flashlight comprises an ultrasonic distance detection module, a switch, a button, a flashlight body, a snoot, an optical filter, an led lamp, a front fixing ring, a back fixing ring, a circuit board and other parts. The distance detection module can detect the distance between an irradiated object aligned to the light source and the light source in real time and transmit the information to a singlechip through an I / O port, the singlechip receives the signal, outputs PWM waves with different duty ratios, controls a driving module to output different voltages and provides different current for the high-power led lamp through a resistor, in order to adjust the brightness of the light source and automatically adjust the light intensity of the light source with the change of the irradiation distance, so that an illumination effect is guaranteed to be basically unchanged in the case of light source jitter or distance change. The flashlight provided by the invention automatically changes the illumination brightness according to the distance, and meanwhile, the illumination brightness corresponding to the same irradiation distance can also be changed by the button to realize human-friendly adjustment.

Description

technical field [0001] The invention relates to an adjustable light source, in particular to a flashlight which can automatically adjust the light intensity as the irradiation distance changes. Background technique [0002] Some existing lighting devices can artificially change the lighting brightness through buttons or switches to meet the lighting requirements to a certain extent. However, due to the change or shaking of the light source position, the irradiation distance will change, and the actual light irradiated to the body will increase or decrease, which cannot meet the requirements of constant brightness lighting under certain specific conditions. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention provides a flashlight which can automatically adjust the light intensity according to the change of the irradiation distance. [0004] In order to achieve the above object, the technical scheme adopted in the present invention ...

Claims

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Application Information

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IPC IPC(8): H05B37/02H05B33/08H05B44/00
CPCH05B45/10H05B47/105
Inventor 廖伟涵郭瑞鹏
Owner ZHEJIANG UNIV
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