Light transmittance control device and method

Abstract

The invention provides a light transmittance control device and method. The control method is applied in a system comprising a light transmittance panel, a first photosensitive element, a second photosensitive element and a control circuit. The method comprises the steps that the first photosensitive element is used for detecting the intensity of light from the main view direction, the second photosensitive element is used for detecting the intensity of light from the non-main-view direction, the intensity of light from the main view direction and the intensity of light from the non-main-view direction are matched with multiple preset strategies comprising the light intensity constant strategy, the highlight strategy, the day and night strategy, the day strategy, the night strategy, the tunnel strategy and the bridge opening strategy through the control circuit, and after matching, the control circuit adjusts the light transmittance of a light transmittance panel through the matched strategies. According to the light transmittance control device and method, a user can reasonably and automatically adjust light transmittance at the time of day, night and day and night transition time, the light transmittance can be reasonably and automatically adjusted, and glare is effectively avoided.

Description

technical field [0001] The present invention relates to the technical field of anti-glare, in particular to a light transmittance control device and a control method thereof. Background technique [0002] Most of the auxiliary group sighting equipment (glasses, sunshade mirrors, interior rearview mirrors, exterior rearview mirrors, etc.) on the market do not have anti-glare function. When the strong light shines, it is easy to irritate the eyes and cause damage to the eyes. Usually in the environment with strong light, people will choose to wear sunglasses, and the light transmittance of the sunglasses is low, so as to reduce the light intensity entering the human eyes. However, due to the large range of people's activities, the light intensity of the surrounding environment will continue to change, but the light transmittance of the sunglasses is unchanged, so that people's visual clarity will be affected under different light intensities, especially In the evening, ordina...

AI Technical Summary

Problems solved by technology

[0004] However, the scope of human activities is larger, the surrounding environment is more complex, and the changes are also greater.

[0005] First, the anti-glare glasses in the prior art react slowly when encountering external light changes, and it is difficult to meet certain specific environments.

For example, when a person is driving a car, if a car with headlights on suddenly comes in front of him, the light transmittance of the anti-glare glasses will not change in time, and it will not be able to achieve the purpose of anti-glare

Especially when the traffic flow is heavy, or the car is driving on a road with tree shade, the light intensity detected by the glasses is changing rapidly, the glasses cannot respond in time, and it is difficult to achieve the purpose of anti-glare

[0006] Second, the existing glasses only detect the light intensity at the front end, instead of considering the light intensity of the surrounding environment as a whole, which cannot achieve the purpose of scientifically and rationally adjusting the light transmittance of the lens

[0007] It can be seen that the current anti-glare glasses cannot protect the user's eyes well.