Exposure meters for photographic devices; Panel meters, namely, an electronic instrument that displays an input signal in either a digital or analog form; Photometers; Photographic exposure meters

Electro-optical instruments and devices for measuring radiant energy and luminous intensity of light emitting diodes in scientific, industrial and photographic applications, namely, LED photometers, traffic signal light testers, color temperature meters, exposure meters, meter testing equipment, and light filters; instruments for photometry and radiometry, namely, luminance meters, radiance meters, illuminance meters, irradiance meters, spectroradiometers, candle-power meters, optical lenses,...