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Irradiance Detectors with Radiance Attachment

A cost effective strategy to perform both irradiance and radiance measurements is to outfit RW-37 and UV-37 series irradiance detectors with front lens adapters. The radiance adapters limit the field of view of the irradiance detector to enable radiance measurement in W/(m²sr) of larger area radiance sources.


Simple Assembly

The SRT-M37L series front lenses attach to the front of the 37-type type detector housings using the SRT-M45/37 base mount which fits onto the detector housing and is held in place with set screws. The SRT-M45/37B is internally threaded (M37x1) so that the externally threaded SRT-M37L front lens can be screwed into it. The SRT-M45/37B base mount has an M6 and standard camera (1/4”-20 BSW) threaded hole for tripod or bench post or to fixture the device into an application.


1° to 10° Selectable Field-of-Views

Front lenses with 1°, 2°, 5° and 10° are available.


Traceable Calibrations

Lens and detector assembly is calibrated in radiance sensitivity in W/m²sr at Gigahertz-Optik’s Calibration Laboratory for Optical Radiation Quantities.

SRT-M45/37-B Adapter
Specification
SRT-M37L-1

Front lens glass with 1° field of view. Needs SRT-M45/37B to couple with RW-37 type detector. 0.7 mm diameter hole aperture

SRT-M37L-2

Front lens glass with 2° field of view. Needs SRT-M45/37B to couple with RW-37 type detector. 1.4 mm diameter hole aperture.

SRT-M37L-5

Front lens glass with 5° field of view. Needs SRT-M45/37B to couple with RW-37 type detector. 3.4 mm diameter hole aperture

SRT-M37L-10

Front lens glass with 10° field of view. Needs SRT-M45/37B to couple with RW-37 type detector. 7 mm diameter hole aperture

Type Description File-Type Download
Datasheet RW-37 with SRT-M37-L PDF
Produktname Product Image Description Show product
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P-2000 Two-channel optometer.

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P-9801 Eight-channel optometer.

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Article-Nr Modell Description Request / Compare
Product
15295665 SRT-M37L-1

1° Front Lens

15295666 SRT-M37L-2

2° Front Lens

15295668 SRT-M37L-5

5° Front Lens

15295740 SRT-M37L-10

10° Front Lens

Calibration
15300580 K-Si-SR

Calibration of relative spectral responsivity from 250 nm - 1100 nm or the detectors spectral responsivity range

15300571 K-UV-SR

Calibration of relative spectral responsivity from 250 nm - 550 nm or the detectors spectral responsivity range

15300581 K-NIR-SR

Calibration of relative spectral responsivity from 800 nm - 1800 nm or the detectors spectral responsivity range

Accessories
*) PMS-

Post-Mount Stand components, see PMS products.