A method and device for adjusting the brightness of a desk lamp under sudden changes in ambient brightness

Abstract

The invention relates to the field of table lamps, in particular to a table lamp brightness regulating method and device for environment brightness abrupt change. The method comprises the steps that a current environment brightness value is obtained; a current work area brightness value is regulated so that the current brightness luminance contrast ratio can reach a preset contrast ratio; when environment brightness changes abruptly, the current work area brightness value is regulated within a preset regulating range of the work area brightness value, so that the brightness contrast ratio is in a preset brightness contrast range after abrupt change, and the difference value between the brightness contrast ratio after abrupt change and the brightness contrast ratio before abrupt change is the minimum. According to the method and device, the work area brightness value is regulated within the preset regulating range of the work area brightness value, so that the brightness contrast ratio is in the preset brightness contrast range after abrupt change, and the difference value between the brightness contrast ratio after abrupt change and the brightness contrast ratio before abrupt change is the minimum; human eyes can adapt to glare caused by environment brightness abrupt change better, and the visual effect of the human eyes is accorded with better.

Description

technical field [0001] The invention relates to the field of desk lamps, in particular to a method and device for adjusting the brightness of a desk lamp under sudden changes in ambient brightness. Background technique [0002] As a lighting tool, desk lamp is widely used in daily life and has formed a huge market scale. At present, there are many desk lamps with adjustable brightness on the market. The brightness adjustment scheme is: when the ambient light becomes dark, increase the brightness of the desk lamp; when the ambient light becomes bright, reduce the brightness of the desk lamp, so as to maintain a good light environment . [0003] According to the visual effect of the human eye, when the brightness of the work area is higher than the brightness of the surrounding environment, people are most likely to concentrate, and the contrast between the brightness of the work area and the brightness of the surrounding environment is within a certain range, and the human e...

AI Technical Summary

Problems solved by technology

[0004] According to the visual effect of the human eye and the adaptation of the human eye to light, the brightness adjustment scheme of the current market desk lamp cannot solve the most important problem in practical application: in the process of actually using the desk lamp, the most harmful factor to the human eye is the brightness of the working area A sharp change in the contrast with the surrounding environment brightness, the sharp change in the contrast will cause discomfort to the human eye, resulting in a short-term sudden change in brightness

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