Topcon Optical Instruments
Photometers, Colorimeters, Spectroradiometers, Color Video Photometers, and Response Detectors

Westar Display Technologies is pleased to be the North American distributor
(U.S., Canada, Mexico) for Topcon Technohouse Corporation of Japan.

Topcon’s industry-leading light measurement devices are well known across multiple industries including flat panel displays, medical, industrial, automotive, paint & textiles, and aerospace & defense.

SR Series

Spectroradiometers
2D Spectroradiometers

BM Series

Luminance Colorimeters
Luminance Meters

UA / RD Series

2D Luminance Colorimeters
Uniformity Analyzers

Topcon SR Series Spectroradiometers

For spectral measurements and greater color accuracy

How do Spectroradiometers measure light?

Unlike color filter colorimeters which use optical filters to measure CIE tri-stimulus values (X,Y,Z), spectroradiometers use a diffraction grating, relay optics, and a CCD sensor to measure the sampled light dispersed by wavelength.

The visible band “rainbow” of light falling on the sensor is converted to electrical signals which are captured, corrected, processed, and reported as an array of radiance values and derived colorimetric results.

The CIE XYZ values are computed from the full array of spectral data using precision math functions (standard tri-stimulus integrals) prescribed by the CIE.

Applications Include

Optical measurements for product design, engineering, R&D, QA/QC, and compliance testing of a variety of displays and lighting products including:

  • LED backlights
  • LED lighting
  • HDTVs, laptops, tablets
  • Smart phone displays
  • Automotive lighting
  • Automotive displays
  • Aerospace displays
  • Traffic signals
  • Outdoor displays
  • Digital signage
  • Industrial equipment
  • Consumer electronics
  • and more…

[NEW] SR-5000

2D Spectroradiometer

Spectrum measurement with
1.4 mega pixel CCD image sensor
Topcon SR-5000 2D Spectroradiometer

Luminance Range cd/m²

0.5 – 5,000,000

SR-LEDW | SR-LEDW-5N

Wide Dynamic Range Spectroradiometer

High sensitivity and wide dynamic range spectroradiometer
Topcon SR-LEDW Spectroradiometer

Luminance Range cd/m²

0.0005 – 5,000,000

SR-LEDH

Ultra-High Speed Spectroradiometer

Meets high speed and accuracy requirements in production / QC

Luminance Range cd/m²

10 – 4,500,000

SR-UL2 | SR-UL2s

Ultra-Low Luminance Spectroradiometer

Measure low luminance quickly at around 17sec for 0.005 cd/m²
Topcon SR-UL2 Spectroradiometer

Luminance Range cd/m²

0.0005 – 300,000

SR-UL1R

Ultra-Low Luminance Spectroradiometer

Ideal for high contrast flat panels, instrument panels, light sources
Topcon SR-UL1R Spectroradiometer

Luminance Range cd/m²

0.001 – 300,000

SR-3AR

Spectroradiometer

Ideal for flat panel displays, back lights, and light sources
Topcon SR-3AR Spectroradiometer

Luminance Range cd/m²

0.1 – 300,000

SR-NIR

Near-Infrared Spectroradiometer

Measure near-infrared spectral from 600nm to 1030nm
Topcon SR-NIR Spectroradiometer

Topcon BM Series Luminance Colorimeters and Luminance Meters

Applications Include

Optical measurements for product design, engineering, R&D, QA/QC, and compliance testing of a variety of displays and lighting products including:

  • HDTVs, laptops, tablets
  • Smart phone displays
  • Automotive lighting
  • Automotive displays
  • Aerospace displays
  • Traffic signals
  • Outdoor displays
  • Digital signage
  • Industrial equipment
  • and more…

BM-5AC

Luminance Colorimeter

Top-end model of the BM line of luminance colorimeters
Topcon BM-5AC Luminance Colorimeter

Luminance Range cd/m²

0.00005 – 1,200,000

BM-7AS

Luminance Colorimeter

Measure both luminance and color with high precision and speed
Topcon BM-7AS Luminance Colorimeter

Luminance Range cd/m²

0.01 – 12,000,000

BM-9A

Luminance Meter

Measure luminance of illuminated surfaces, materials, displays, lights
Topcon BM-9A Luminance Meter

Luminance Range cd/m²

0.01 – 28,000,000

Topcon UA / RD Series 2D Luminance Colorimeters
Uniformity Analyzers

UA-200A

2D Luminance Colorimeter

High accuracy luminance and chromaticity uniformity
Topcon UA-200A 2D Luminance Colorimeter

Luminance Range cd/m²

0.005 – 1,000,000

UA-10

Luminance & Chromaticity Uniformity Analyzer

High-speed and accuracy ideal for MURA inspection
Topcon UA-10 Uniformity Analyzer

Luminance Range cd/m²

0.1 – 1,000,000

RD-80SA

Luminance Colorimeter

Measure response time, flicker, luminance, and chromaticity
Topcon RD-80SA Luminance Colorimeter

Luminance Range cd/m²

0.1 – 10,000

Whether you need a standalone instrument or full system integration, we can help

We offer a wide selection of optical instruments

If you need to measure light, Westar can help you select a Topcon photometer, colorimeter, spectroradiometer, or response detector. In addition to Topcon instruments, we offer a line of temporal response detectors for measuring response time and flicker of your flat panel display or light source.

We can help you find the best instrument for your application

Whether you need to measure luminance, chromaticity, or spectral distribution of an LCD, or measure uniformity of an automotive instrument panel, we can help you select the right instrument for the job.

We also offer system integration, support, and training

Westar specializes in light measurement applications which go beyond the instrument. If you need software support, systems integration assistance, training, or a complete turn-key system, we can help. Contact our light measurement experts for assistance in selecting the right instrument for the job and to discuss your measurement challenges at a system level.

Want to find out more?

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