CS-FGT Stray light ghosting test system can be used to test camera/lens stray light and ghosting

The CS-LE-FGT flare testing light source is a testing device specifically designed for camera stray light and ghost image issues.

It can customize the size and position of the light according to the specific testing requirements of the camera, ensuring the accuracy and applicability of the test.
The CS-LE-FGT flare ghost testing light source uses multiple LED light sources, which are distributed at different positions in the camera's field of view and can independently control their lighting sequence, duration, and brightness.

This flexible control method allows the CS-LE-FGT light source to simulate various complex lighting conditions, thereby effectively analyzing the stray light and ghost image performance of the camera in different environments.

What is Stray Light ？

Different industries use various descriptive terms for stray light. Common terms include stray light, lens flare, veiling glare, ghost image, and image glare, among others. Most of these terms lack rigorous definitions and can be interpreted differently by various readers. The international standard ISO 9358, titled "Optics and Optical Instruments – Veiling Glare of Image-Forming Systems – Definitions and Methods of Measurement," provides a comprehensive definition for the qualitative and quantitative measurement of stray light. It also elaborates on how to measure stray light within lens components in the 2014 document. This standard outlines the methods for assessing the stray light characteristics of optical and optoelectronic imaging systems, including the use of the stray light glare index (VGI) and the stray light glare function (GSF). It details several measurement techniques, such as the point spread function, integrating spheres (both single and double integrating hemispheres), and test card-based measurements, to evaluate the stray light properties of lenses. Additionally, the standard differentiates between veiling flare, which is primarily concerned with lens-related flare, and image flare, which describes the flare present in the final image processed by the camera. The ISO 18844 standard complements this by offering a systematic approach to evaluate image flare across all types of cameras.

Product parameter：

Parameters	CS-LE-FGT Flare Testing Light Source
Color Temperature	3000K or 6500K (customizable)
Light-Emitting Angle	80°
CRI	＞90
Diagonal Single Lamp Bead Lighting Mode Illuminance	≤1000 Lux (test at 30cm)
Full Lighting Mode Illuminance	≤20000 Lux (test at 30cm)
LED Quantity	285（Customizable, may different based on different FOV)
Dimension	600mm × 478mm × 144mm (L*W*H)
Control Method	【RS-485】
Maximum Power	300W
Supply Voltage	AC100~120V / 200~240V ; 50Hz/60Hz
Work Environment	Temperature: 25℃(±10℃) Humidity: 30%~50%

Product features：

The design is simplified, offering agile control and cost-effectiveness, which is particularly well-suited for fundamental research laboratories and production lines to perform subjective evaluations of flare, stray light, and ghosting phenomena. Integrated with analytical software, it facilitates the implementation of quantitative analytical functions.

Product demonstration video：

Related Reading:

1. Introduction to Lens Stray Light and Solutions

2. How to Test Camera Flare

For more information on related products and testing services, please contact：sales@colorspace.com.cn

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