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Method and device for measuring photometric quantity of mesopic vision

A technique of mesovision, measurement methods, applied in the field of optical radiation measurement, which can solve problems such as errors, photometric calculations, and inappropriate lighting design.

Inactive Publication Date: 2010-08-25
HANGZHOU EVERFINE PHOTO E INFO
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Problems solved by technology

Luminous efficiency function V of intermediate vision m (λ) is related to the specific lighting level. Under mesopic conditions such as night lighting, the offset of the photopic efficiency function relative to the photopic photometric efficiency function will be calculated in the photometric calculation and Inappropriate or even wrong results in lighting design

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

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Embodiment Construction

[0041] As shown in Fig. 2, in the mesopic photometer of the present invention, the spectrometer 1 and the photopic photometric probe 2 are electrically connected to the same microelectronic processing unit 3, and are connected to the 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 in the computer the known photopic and scotopic spectral visual effect functions V(λ), V'(λ), the relative spectral sensitivity S of the photopic photometric probes rel (λ), the relative spectral power P of the standard lamp that calibrates the visual photometric probe S (λ) and the corresponding mesopic photometric calculation program. The optical signal collection device 1-2 of the spectrometer and the photometric probe measure the light to be measured at the same time to obtain the relative spectral sensitivity P of the light to be measure...

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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 measurement method and a measurement device for mesoscopic photometric values. 【Background technique】 [0002] When the brightness of human eye stimulation is about 3cd / m 2 In the above, the vision mainly obtained by the human eye cone cells is called photopic vision or cone cell vision. The photopic efficiency function V(λ) specified by CIE is the basis and basis of current photometric calculation, measurement and lighting design. The brightness of light stimulation is about 0.001cd / 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. CIE also stipulated the scotopic optic efficiency function V'(λ) in 1951. The scotopic optic efficiency function curve is relatively In photopic vision, the optical efficiency function curve shifts to the short-wave direction. When t...

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Application Information

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