PUBLIC / GENERAL LIGHTING

Goniophotometers for General Lighting

Goniophotometers for measurement of direct and indirect luminous intensity distribution of luminaires, dependent on the individual orientation. Coordinate systems are mostly CIE (C,γ), although some applications like flood lights require measurement in CIE (B, β).

• Goniophotometer with Centred Mirror Geometry LMT GO-DS
• Goniophotometer with Turning Device LMT GO-V 1920
• METROGON® (METrologic RObotic GONiometer) GO-R 3000

Integrating Spheres

Measurement of integrated luminous flux or chromaticity in production, quality control, R&D or transfer of luminous flux for calibration purposes .

• Integrating Sphere LMT UL 1000
• Integrating Sphere LMT UL 1650
• Integrator LMT UL 1650×2250

Photometer Units Lighting

High precision laboratory measurement of illuminance in combination with LMT GO-DS series, GO-V or METROGON® goniometers. In addition to illuminance, the units are capable to display luminous intensity (hard-wired cd).

• LMT Photometer Unit
• LMT Photometer Unit 1600 M
• System Photometer LMT S 1000

Illuminance Meters

Illuminance meters (Luxmeters) and photometers for stand-alone measurements in laboratory and/or field applications in combination with a variety of different photometer heads.

• Illuminance Meter LMT Pocket-Lux 2
• Illuminance Meter LMT B 360
• Illuminance Meter LMT B 520
• Illuminance Meter LMT B 520 L

Luminance Meters

Luminance Meters (spot photometers) determine luminance of light emitting surfaces, light sources and computer monitors, but may be as well useful for glare measurement.

Further field of use ranges from daily quality checks to in-depth R&D or transfer of luminance standards in calibration laboratories.

• Luminance Meter LMT L 1000

Colorimeters

Very fine adopted tristimulus colorimeters for colour measurement of lighting devices, e.g. light sources, road illumination, signals, flashes and flares.

Tristimulus colorimeters integrate the CIE 1931 standard observer colour matching functions acc. to DIN 5033-6 and ISO-CIE 11664-3:2019. LMT Mosaic Filtering® assures lowest measurement uncertainty of chromaticity.

• Tristimulus Colorimeter LMT C 1210
• High Speed Tristimulus Colorimeter LMT C 3300

Spectroradiometers for General Lighting

Application tailored spectroradiometers are required for general lighting colour measurement and colour rendering.

• Tele-Spectroradiometric Measurement System LMT SM 9000
• Spectroradiometric Measurement System LMT SM 8000-GO
• Spectroradiometric Measurement System LMT SM 8000 UL

Time resolved Measurement

Since introduction of pulse-width modulated LEDs temporal light artefcts (TLA) like optical flicker are getting important.

• LMT Optical Flicker Unit