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Visible Light Spectroradiometry from 400–800 nm – ILT570-VIS

ILT570-VIS from International Light Technologies

The ILT570-VIS Spectroradiometric Measurement Systems are designed for accurate characterization of visible light sources in research, development, quality control, and production environments. The systems measure spectral irradiance, radiance, luminance, illuminance, spectral flux, optical power, lumens, and color parameters across the visible spectrum.

With a calibrated spectral range from 400 nm to 800 nm, the ILT570-VIS is ideal for applications where reliable visible light measurement is required. Each system combines a compact visible mini spectrometer, optical fiber, calibrated measurement head, stand, SpectrILight III software with DLLs, and a carrying and storage case.

Features

Visible light measurement from 400 nm to 800 nm
Compact spectroradiometric measurement system
Measurement of spectral irradiance, irradiance, illuminance, and color
Measurement of spectral radiance, radiance, luminance, and color
Measurement of spectral flux, optical power, lumens, and color
Seven system configurations for different measurement tasks
ISO 17025 calibrated spectroradiometric response
SpectrILight III control and analysis software included
Portable setup with storage and carrying case
Suitable for development, inspection, quality control, performance validation, and production

Further information

The ILT570-VIS series provides flexible spectroradiometric measurement solutions for visible light sources. Depending on the selected optical head, the system can be configured for irradiance, radiance, luminance, illuminance, color, spectral flux, optical power, or lumen measurements.

This makes the ILT570-VIS suitable for both laboratory and production-related measurement tasks. Typical use cases include lamp monitoring, LED and solid-state lighting assessment, quality control, illumination testing, automotive lighting, agricultural lighting, clean room environments, environmental health and safety, industrial surveys, and task lighting audits.

The compact spectrometer covers a spectral range from 350 nm to 810 nm, while the calibrated spectral range is 400 nm to 800 nm. This clearly positions the ILT570-VIS as a visible light spectroradiometer system rather than a UV-VIS or UV-NIR solution.

Each system is fully characterized and calibrated for spectroradiometric response. Calibration is performed according to ISO 17025-certified processes and supported by recalibration centers in North America, Europe, and China. This helps users maintain traceable and repeatable measurement quality over the instrument lifetime.

The included SpectrILight III software supports spectral analysis, color evaluation, CRI data, chromaticity diagrams, irradiance, radiance, peak wavelength analysis, and additional light measurement parameters. This allows users to evaluate light sources in detail and document results for development, validation, or production quality control.

Models

Model / Measurement Type

	Description
ILT570VIS-RAA4	Visible spectral irradiance system with a right-angle adapter/diffuser head for measuring spectral irradiance, total irradiance, and the spectral characteristics of visible light sources.
ILT570VIS-W/A2	Visible spectral irradiance system with a diffused quartz head and SMA adaptor for measuring spectral irradiance, total irradiance, illuminance, color parameters, and spectral characteristics of visible light sources.
ILT570VIS-W5E	Visible spectral irradiance system featuring a miniature cosine-correcting diffuser with SMA905 fiber adaptor for irradiance, illuminance, color, and spectral characterization measurements.
ILT570VIS-R2	Visible spectral radiance system with a 2° field-of-view optical head for measuring spectral radiance, radiance, luminance, color parameters, and extended light sources.
ILT570VIS-R3	Visible spectral radiance system with a fixed-distance small-spot optical head for radiance, luminance, color, and spectral characterization of extended light sources.
ILT570VIS-INT50	System with a 5 cm integrating sphere for measuring forward and total spectral flux, optical power, and spectral characteristics of visible light sources.
ILT570VIS-INT150	System with a 15 cm integrating sphere designed for forward and total spectral flux measurements, optical power measurements, and characterization of larger light sources.

Specifications

Specification	ILT570-VIS
Spectrometer range	350 nm to 810 nm
Calibrated spectral range	400 nm to 800 nm
Measurement types	Spectral irradiance, radiance, luminance, illuminance, spectral flux, optical power, lumens, color
Integration time range	3.8 ms to 6 sec
Spectral resolution	2.2 nm
Wavelength accuracy	0.9 nm
Fiber length	1 m
Fiber connection	SMA-905
Spectrometer dimensions	42 mm x 40 mm x 27 mm
Spectrometer weight	70 g
Software	SpectrILight III
Operating system	Windows 11 or later

Model	Measurement Type	Measurement Range
ILT570VIS-RAA4	Illuminance	25 to 150,000 lx
ILT570VIS-W/A2	Illuminance	100 to 600,000 lx
ILT570VIS-W5E	Illuminance	50 to 250,000 lx
ILT570VIS-R2	Luminance	1 to 20,000 cd/m²
ILT570VIS-R3	Luminance	2 to 20,000 cd/m²
ILT570VIS-INT50	Luminous Flux (3200 K QTH)	0.003 to 47 lm
ILT570VIS-INT150	Luminous Flux (3200 K QTH)	0.02 to 400 lm

Applications

LED and Solid-State Lighting

The ILT570-VIS can be used to evaluate the spectral output, color characteristics, illuminance, luminance, and optical performance of visible light sources such as LEDs, lamps, and lighting assemblies.

Automotive Lighting

For automotive lighting applications, the system supports measurements of visible spectral output, luminance, color, and lighting performance. This is useful for development, validation, and production quality control.

Agricultural Lighting

In horticulture and agricultural lighting, visible light characterization helps evaluate spectral output and lighting conditions for controlled environments.

Quality Control and Production

The ILT570-VIS supports repeatable light measurements for incoming inspection, production monitoring, performance validation, and final quality control.

Clean Room and Laboratory Environments

The compact system design and calibrated measurement response make the ILT570-VIS suitable for laboratory work, clean room monitoring, and controlled measurement environments.

Industrial and Safety Measurements

Typical applications include illumination assessment, task lighting audits, environmental health and safety measurements, and industrial lighting surveys.