This standard specifies pointer-type and digital illuminometers (hereinafter referred to as illuminance meters) that measure the illuminance of natural light such as daylight and general lighting light sources (incandescent lamps, fluorescent lamps, HID lamps, etc.). . This standard should also be used as much as possible for illuminance measuring instruments (photometers) that are part of a measurement system, illuminance measuring instruments that measure special light sources such as LEDs, and illuminance meters for special purposes such as underwater illuminometers. Good.
JIS C 1609-1:2006 Referenced Document
JIS C 7526 Standard incandescent lamps of luminous intensity
JIS Z 8103 Glossary of terms used in measurement*, 2019-05-20 Update