Korea Research Institute of Standards and Science

Seung Nam Park

Dong Hoon Lee

Seongchong Park

Dong-Hoon Lee

Seung Kwan Kim

Dong-Joo Shin

Ji Soo Hwang

Chul Woung Park

Yong Shim Yoo

Seong Chong Park

Provided are an integrating sphere photometer and a measuring method of the same. The integrating sphere photometer includes a plurality of photodetectors, an integrating sphere having through-holes formed to correspond to the photodetectors, baffles disposed inside the integrating sphere in front of the photodetectors to be spaced apart from the photodetectors, a photometer disposed at a through-hole, and an adjustment unit adjusting output signals of the photodetectors to have the same output signal with respect to light illuminated from a point-like standard light source disposed at a center region in the integrating sphere.

Integrating sphere photometer and measuring method of the same

Provided are an integrating sphere photometer and a measuring method of the same. The integrating sphere photometer includes an integrating sphere including a left hemisphere and a right hemisphere, a photometer disposed on the center surface of the right hemisphere, a photometer baffle disposed in front of the photometer to be spaced apart therefrom, a light source to be tested disposed at the center region of the integrating sphere to illuminate light to at least an illumination region of the left hemisphere, an auxiliary lamp part disposed in the vicinity of a contact region between the left hemisphere and the right hemisphere to illuminate light to the illumination region, and an auxiliary lamp baffle disposed around the auxiliary lamp part to prevent the light emitted from the light source to be tested from being directly illuminated to the auxiliary lamp part and also to prevent the light emitted from the auxiliary lamp part from being directly illuminated to the light source to be tested.

An integrating sphere photometer and a measuring method of the same are provided to precisely measure a directional light source. The integrating sphere photometer includes an integrating sphere having a plurality of through-holes, a plurality of photometers disposed at the through-holes, baffles disposed in front of the photometers to be spaced apart therefrom, an auxiliary light source disposed inside the integrating sphere, an auxiliary baffle disposed in front of the auxiliary light source, and a summing unit of output signals of the photometers under the illumination of a light source to be measured disposed in the central area inside the integrating sphere.

The present invention relates to an apparatus and a method for inspecting quantum efficiency homogeneity of a solar cell using a spatial light modulating device. The apparatus includes a light emitting device configured to radiate predetermined light; a spatial light modulating device configured to change a light path of rays emitted from the light emitting device according to individual control of a plurality of pixels; a spatial light modulating device controller configured to individually control the states of the plurality of pixels; a solar cell which the rays passing through or reflected from the spatial light modulating device irradiate; and a calculation controller configured to calculate quantum efficiency of the solar cell based on a photocurrent signal generated from the solar cell.

Apparatus and method for inspecting homogeneity of solar cell quantum efficiency using imaging device

The present invention provides an instrument and method for measuring total luminous flux of luminous elements, which forms an approximately uniform spatial intensity distribution by simultaneously lighting a plurality of luminous elements for measurement in an integrating sphere when comparing a total luminous flux standard lamp with the luminous elements to measure the total luminous flux of the luminous elements, thus not requiring spatial mismatch error correction.

Growing community of inventors

Daejeon, South Korea

Seung Nam Park