CL-700A Spectral Radiant Illuminance Meter——Wide Spectral Range · High Dynamic Range · Multi-Point Measurement

The CL-700A Spectral Radiant Illuminance Meter is a professional optical measurement instrument designed for accurate illuminance, spectral and colorimetric evaluation across a wide dynamic range.

Covering 360–1000 nm, from visible light to near-infrared (NIR), CL-700A is suitable for lighting, display, automotive, security and intelligent sensing applications where optical performance consistency and spectral accuracy are critical.

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Product Overview

In modern lighting, display, automotive and intelligent sensing systems, light sources are required not only to be bright, but also to remain stable and consistent under low-light conditions, across different spectral bands, and over large illuminated areas.

The CL-700A Spectral Radiant Illuminance Meter integrates spectral measurement, illuminance measurement and colorimetric analysis into a single device. It supports an ultra-wide illuminance range from 0.01 lx to 200,000 lx, while maintaining fast and stable measurement performance across the 360–1000 nm spectral range.

Designed to address challenges such as low-light performance, spectral consistency, near-infrared response and illuminance uniformity, CL-700A is suitable for laboratory R&D validation, type testing and production quality control. It can also serve as a core measurement unit within a complete optical test system.

*Color Rendering Index (CRI): A metric indicating how accurately a light source reproduces object colors compared to natural daylight (D65). A CRI of 100 represents a perfect match to daylight.

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Measurement Capabilities & Key Advantages

1. Designed for Low-Light and Near-Infrared Measurement

· Spectral range: 360 nm – 1000 nm

· Supports both visible and near-infrared measurements

· Suitable for IR illumination, sensing light sources, night vision and intelligent recognition systems

· Effectively overcomes the limitations of conventional illuminance meters in low-light or IR spectral evaluation

2. Ultra-Wide Dynamic Illuminance Range

· Illuminance range: 0.01 lx – 200,000 lx

· One instrument covers dark environments, standard lighting and high-brightness sources

· Reduces device switching and improves test consistency

·Applicable to low-light evaluation, display brightness testing, industrial and automotive lighting assessment.

Typical Illuminance	Ranges	Applications
Low Illuminance	from 0.01 lx	· Evaluation of weak light sources in dark rooms or nighttime environments · Low-light performance testing of smartphone camera modules · Image sensor response evaluation under low illumination
Medium Illuminance	tens to thousands of lux	· Office lighting uniformity assessment · Projector evaluation · Uniformity testing based on multi-point measurement setups
High Illuminance	tens of thousands to 200,000 lx	· Outdoor lighting evaluation (stadiums, street lighting) · Industrial LED light sources · Agricultural and indoor farming lighting assessment

3. High-Speed Measurement in Low-Light Conditions

· Approx. 5 seconds at 0.01 lx
· Significantly reduces waiting time for low-light tests

· Improves efficiency in R&D and production environments

4. Multi-Point Synchronous Measurement for Illuminance Distribution

· Supports up to 15 measurement probes
· Enables illuminance distribution and uniformity analysis

· Suitable for large-area measurements such as displays, projection systems and road lighting

· Can be integrated into automated optical test systems

5. Compact Design for Easy System Integration

· Small footprint and lightweight design

· Supports handheld measurement, fixed installation and production line integration

· Ideal for laboratory setups and automated testing environments

6. Dedicated Measurement Software Support

· Compatible with CL-S30 measurement software
· Real-time display of illuminance, CRI, dominant wavelength, chromaticity coordinates and spectral graphs
· Supports data analysis and test record output

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Product Specifications

Model	CL-700A Spectral Radiant Illuminance Meter
Spectral Range	360nm ~ 1,000nm
Wavelength Interval	1nm
Spectral Bandwidth (Half Bandwidth)	Approx. 10 nm (400–1000 nm)
Wavelength Accuracy*1	±0.3 nm (calibrated at 435.8 nm, 546.1 nm, 585.3 nm according to JIS Z8724)
Illuminance Range	0.01 – 200,000 lx (Guaranteed chromaticity accuracy above 0.5 lx)
Accuracy*2(Standard Illuminant A)	Ev: ±2% of displayed value ±1 digit
	xy: ±0.0015 (≥5 lux) xy: ±0.003 (0.5 ~ 5 lux)
Measurement Time*3	Ultra-fast mode: ≤0.3 s Fast mode: ≤0.5 s Normal mode: approx. 0.5–5 s
Dimensions	80 × 170.5 × 35 mm
Weight	Approx. 214 g

Typical Applications & Industries

1. Lighting and Illumination

· LED / OLED color rendering and spectral evaluation

· Indoor, outdoor, industrial and horticultural lighting testing

2. Automotive and Intelligent Driving

· Headlamp, ambient lighting and HUD illuminance testing

· Near-infrared illumination evaluation for autonomous sensing systems

3. Consumer Electronics and Display

· Display brightness and uniformity measurement

· Camera auxiliary lighting and low-light environment evaluation

4. Security and Intelligent Sensing

· Infrared illuminators and night vision system testing

· IR light source stability and sensor response consistency analysis

Related Products & Resources:

1. CL-500A Spectral Illuminance Meter

2. Optical and color measurement technical resources

Contact & Test Service

For more information about related products and optical test services, please contact: sales@colorspace.com.cn

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