Method for detecting mesoptic vision photometric quantity and photometric detection apparatus thereof

Abstract

The invention discloses a method for detecting a mesopic vision photometric value and a photometric detector thereof. The method comprises the following step: obtaining a set of corrected values by a probe of a detector which is corrected by a mesopic vision visual curve under a determined background luminance, and the method is characterized by performing correction of one mesopic vision visual curve under different luminance conditions for the detector under the background luminance condition of the mesopic vision from 10<-2cd / m2> to 10cd / m<2> to obtain each set of the corrected values, and storing the corrected values in a computer of the detector; and firstly, measuring the background luminance B under a mesopic vision environment condition by a luminance meter when measuring, and finding out the maximum value of luminous efficacy and the corresponding set of the corrected values stored in the computer of the detector according to the background luminance B, thus measuring the photometric value under the mesopic vision condition. The photometric detector which is obtained by the method for detecting the mesopic vision photometric value can accurately measure the photometric value under the mesopic vision environment, and can correspond with the human eye perception under the mesopic vision environments particularly at the time of designing road lighting, landscape lighting, or the lighting of low-luminance trenches and tunnels, thus ensuring the optimum ambient lighting.

Description

technical field [0001] The invention relates to a photometric detection technology, in particular to a method for detecting photometric values ​​of intermediate vision and a photometric detector thereof. Background technique [0002] The sensitivity of the human eye to radiation of various wavelengths is different, and it can perceive visible light in the range of 380-760nm. The visual process begins when light rays travel through a lens and converge on sensory cells at the back of the retina. There are two types of sensory cells, one is columnar cells and the other is cone cells. Columnar cells are more sensitive to light than cone cells. ) Vision plays a major role. However, under strong lighting conditions, its response to light tends to be saturated, so the columnar cells play little role in daytime (photopic) vision. Cone cells mainly play a role in photopic vision and are divided into three types with different phytochromes, which respectively respond to three overl...

AI Technical Summary

Problems solved by technology

[0003] At present, all photometric detectors used in the testing of electric light sources, lamps, light-emitting devices, and display devices are corrected by the photopic function curve. The measured data are provided for use under photopic conditions and are suitable for related lighting engineering design. But if it is used in an intermediate vision environment, it will produce a large deviation