Topcon SR-NIR Near Infrared Spectroradiometer

Topcon SR-NIR
Near Infrared Spectroradiometer

The SR-NIR Spectroradiometer can measure spectral distribution in the near infrared range (600nm – 1030nm). The four standard apertures (2° / 1° / 0.2° / 0.1°) are automatically selectable by the control panel or through the USB / RS-232 remote interfaces allowing you to optimize the measurement spot size (also a function of working distance) and the minimum measurable luminance level (larger apertures can measure lower levels).



Measure near-infrared spectral distribution

Measure spectral distribution from 600nm to 1030nm


Four apertures available

Four (4) apertures 0.1°/0.2°/1°/2° enable you to measure from small to wide area without attachment lens


Near infrared spectral region from flat panel displays such as LCDs and OLEDs and various light sources

Measure transmission characteristics of film in near-infrared spectral region

Parameter Aperture
0.2° 0.1°
Optical System Objective lens: f=82mm F2.5
Eyepiece lens: View field 5°, Diopter adjustment range ±5 diopter
Measurement Distance 350mm – Inf.
Spectral Range 600 ~ 1030 nm range @ 1 nm resolution
Accuracy ±7% (600nm to 1030nm for Topcon Standard Light
Spot Size at 1m 32.2 mm 16.1 mm 3.2 mm 1.6 mm
Min. Spot Size at 35cm 10 mm 5 mm 1 mm 0.5 mm
Dimensions Approx 406mm (L) x 150mm (W) x 239mm (H)

Ordering Information

The base unit model number is SR-NIR and includes:

  • Instrument with standard lens
  • AC adapter
  • Lens cap
  • Hard shell carrying case
  • Manual
  • USB Cable
  • CD containing CS-900A software

See the SR-NIR Brochure for available options. Popular options include:

  • AL-6 and AL-11 adapter lenses (for reducing the measurement spot)
  • Tripod and fine adjustment stand (gimbal)
  • Fiber optic probe

If you can’t find what you are looking for, contact us for info on Topcon options and accessories.

Want to find out more?

If you are interested in more information, send us an inquiry.