Photo Research®

Near Infrared
Spectroradiometers

High‑accuracy NIR spectroradiometers from Photo Research® deliver reliable spectral measurement beyond the visible range for advanced imaging, sensing, and optical validation applications.

Photo Research® NIR Range Spectroradiometers for Precision Measurement

The Photo Research® PR‑735 and PR‑745 Near‑Infrared (NIR) spectroradiometers are designed for precise spectral radiance and irradiance measurements in applications where accuracy beyond the visible spectrum is critical. Built on Photo Research’s legacy of measurement accuracy and stability, these instruments support characterization and calibration of NIR light sources, displays, materials, and imaging systems.

Ideal for R&D, laboratory, and production environments, PR‑735 and PR‑745 spectroradiometers provide consistent, traceable performance for medical, industrial, and scientific applications requiring confident NIR measurement.

Explore our NIR Range Spectroradiometers

Light and Color Measurement Solutions

Photo Research®
SpectraScan® PR-735

High‑accuracy spectroradiometer designed for precise photometric and colorimetric light measurements across visible and near‑infrared applications.

Photo Research®
SpectraScan® PR-745

High‑sensitivity, near‑infrared spectroradiometer designed for fast, precise photometric and colorimetric measurements across demanding imaging and display applications.

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Discover how advanced light and color measurement can improve accuracy and consistency.

Light and Color Measurement Solutions

Light and Color Measurement

Accurate light and color calibration is critical to medical imaging quality and patient safety. Photo Research® spectroradiometers deliver trusted, lab‑grade measurement accuracy.

Medical Displays and Monitors

Our solutions deliver fully calibrated, reliable touch performance, optical clarity, and long‑term availability required by medical device manufacturers designing diagnostic, monitoring, and therapy systems.

Features of Photo Research® NIR Spectroradiometers

Pritchard® Optics

Widely accepted as the most accurate, versatile and
precise optical system in use today for accurate measurements you can trust.

SpectraWin® Software

Advanced PC Control Interface – Full‑featured, menu‑driven Windows software for controlling measurements and managing spectroradiometer data.

Flexible Configuration

Interchangeable optics, measurement apertures, accessories, and software settings allow the spectroradiometer to be configured to specific application and test requirements.

User Profiles & Speed

Save and recall user‑specific instrument setups while choosing adjustable speed modes to dramatically reduce measurement time.

FAQs

NIR spectroradiometers extend measurement capability beyond the visible range, enabling accurate characterization of near‑infrared light sources, materials, and imaging systems that visible‑only instruments cannot measure reliably. 

High‑performance NIR spectroradiometers are designed for stability, low noise, and traceable accuracy, delivering repeatable spectral measurements essential for validation, calibration, and quality control applications.

Yes. Configurable optics, measurement apertures, accessories, and software modes allow a single NIR spectroradiometer to adapt across R&D, production, and field environments while supporting diverse testing requirements.

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This consultative sales style, combined with our family of standard and customizable products, ensures that you always get the best product for your application.

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