Method for detecting mesoptic vision photometric quantity and detection apparatus thereof

Abstract

The invention discloses a method for detecting a mesopic vision photometric value and a detection device thereof. The method comprises a step of adopting a photometric detector which is corrected by a scotopic vision visual curve is used, and the method is characterized by performing correction of each set of correction values of one mesopic vision curve under different luminance conditions for the photometric detector which is corrected by the scotopic vision visual curve under the background luminance condition of the mesopic vision from 10<-2cd/m2> to 10cd/m<2>, and then storing each set of the corrected values in a computer of the detector; and firstly, measuring background luminance B under the 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 environment. The detection device 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 environment particularly during the time of designing road lighting, landscape lighting, or lighting of low-luminance trenches and tunnels, thus ensuring the optimum ambient lighting.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows an observer (such as a driver) to easily see things at different levels within their own vehicle's interior without having them look away from each other too much during daylight hours when they are on highways or across country roads. It also helps drivers better perceive how well lights up under certain conditions while driving around obstacles such as trees or buildings.

Problems solved by technology

Technological Problem: The technical problem addressed in this patents relates to improving image sensor performance against high intensity sunlight without causing any changes during night driving hours due to reduced responsiveness caused by yellowish green lights.