For Light Measurements

Type
Measurement of work environment (ambient brightness) or the brightness at night or the illumination such as lamps.
Principal Uses
Official government testing / R&D by illumination manufacturers / repair and maintenance in factories, offices, and hospitals / quality control by manufacturers of home-use lighting products / examination of commercial light sources / illuminance control in agriculture and forestry, etc.

Type
Measurement of luminance of various display devices
Principal Uses
Measurement of the luminance of CRTs, LED, and ELs / road and tunnel brightness / rail-system signals / road and airport signals / illumination and outdoor signs / illumination equipment and devices / device brightness / Research and measurement testing, etc.

Type
Measurement of the tristimulus values, chromaticity, color differences, correlated color temperature and illuminance of display devices such as CRT and LCD and of light sources.
Principal Uses
R&D, examination and quality control for projector light sources, CRTs and color LCDs, light boxes, fluorescent lights, building / interior lighting products and psychological environments, etc.

Type
Measurement of the intensity of UV light.
Principal Uses
Industries using chemically-reactive substances or substances having a bio-response to light emission / a photoelectric reaction.