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Method for measuring photometric quantity of mesopic vision

A technology of mesovision and measurement method, applied in the field of optical radiation measurement, can solve problems such as errors and inappropriate lighting design, and achieve the effect of convenient operation and strong applicability

Inactive Publication Date: 2011-06-01
HANGZHOU EVERFINE PHOTO E INFO
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Problems solved by technology

Luminous Efficiency Function of Mesopic Vision It is related to the specific lighting level. Under intermediate vision conditions such as night lighting, the deviation of the photopic efficiency function relative to the photopic photometric efficiency function will be included in the photometric calculation and lighting design if the photometric standard is used. produce inappropriate or even erroneous results

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  • Method for measuring photometric quantity of mesopic vision
  • Method for measuring photometric quantity of mesopic vision

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Embodiment Construction

[0039] Such as figure 2 In the mesopic photometer of the present invention shown, the spectrometer 1 and the photopic photometric probe 2 are electrically connected to the same microelectronic processing unit 3 and connected to a computer. The spectrometer is a fast spectrometer with an array detector 1-1, and the spectral sensitivity of the photopic photometric probe fits the photopic efficiency function V(λ) specified by CIE. Store the known photopic and scotopic spectral visual effect functions V(λ), V'(λ), and the relative spectral sensitivity S of the photopic photometric probe in the computer rel (λ), calibrate the relative spectral power P of the standard lamp of the visual photometric probe S (λ) and the corresponding intermediate vision photometric calculation program. The optical signal acquisition device 1-2 of the spectrometer and the photometric probe measure the measured light at the same time, and obtain the relative spectral sensitivity P of the measured lig...

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Abstract

The invention relates to a method and a device for measuring photometric quantity of mesopic vision. In the measuring method, a spectrograph and a photopic vision luminosity probe are used for measuring relative spectral power distribution and photopic vision photometric quantity of measured light respectively; and the absolute spectral power distribution of the measured light is calculated through the relative spectral power distribution and photopic vision photometric quantity so as to calculate the photometric quantity of the mesopic vision of the measured light according to a mesopic vision model. The method can be suitable for any mesopic vision computation model and has higher measurement accuracy. The mesopic vision photometer combines the spectrograph and the photopic vision luminosity probe into measuring equipment, so that the measuring operation of the mesopic vision is convenient and the measuring equipment is suitable for measuring all light sources.

Description

technical field [0001] The invention belongs to the field of optical radiation measurement, and in particular relates to a method for measuring the photometric value of mesopic vision and a measuring device thereof. Background technique [0002] When the luminance of human eye light stimulus is about 3 cd / m 2 In the above, the vision mainly obtained by the pyramidal cells of the human eye is called photopic vision or cone cell vision, and the photopic vision efficiency function stipulated by CIE It is the foundation and basis of current photometric calculation, measurement and lighting design. The brightness of photostimulation is about 0.001 cd / m 2 In the following, the vision mainly obtained by rod cells in the case of dark adaptation is called scotopic vision or rod cell vision, and CIE also stipulated the light-visual efficiency function of scotopic vision in 1951 , the scotopic light efficiency function curve shifted to the short wave direction relative to the phot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J1/42
Inventor 潘建根
Owner HANGZHOU EVERFINE PHOTO E INFO
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