The multispectral area light source uses dozens of LED emitters with different peak wavelengths and spectral bandwidths, a precision spectrometer and an independently developed fitting algorithm. Adjusting the amplitudes of its 26 LED channels reproduces target spectra for image color-reproduction testing under different color temperatures, spectra and illuminance levels, with rapid illuminance switching and 60000 brightness levels per channel. One source can fit imported target spectra such as A, H, D50, D65 and D75. Applications include sunlight simulation, multispectral-environment simulation, object color-rendering assessment and whiteness evaluation, with switching between standard illuminants and monochromatic sources. Optional software supports black-body and daylight spectrum matching, preset storage, individual-channel control and cascaded control of multiple sources. It provides a C/C++ API, supports Python calls and runs on Win10/11. Functions include generating standard or externally supplied spectra, independently adjusting 26 channels to produce monochromatic light, saving and importing spectra, creating test sequences, and displaying spectral curves, color temperature, color-rendering index and illuminance. Hardware has 2 types of communication interface, 1 power interface and 1 power switch. Package contents: main unit ×1; power cord ×1 (Chinese-standard length 1.5m, US-standard length 3m); USB Type-A to USB Type-B cable ×1 (3m); RS-485 to USB Type-A cable ×1 (3m); specification sheet ×1; user manual ×1; test report ×1.
| Parameter | Value |
| LED Channels | 26 channels |
| Spectral Range | 380-780 nm |
| Brightness level per road | Level 0~60,000 |
| Lighten-face size [Single luminous / 4 around] | Each unit has a 600x300mm emitting area; 4 units in total on the left and right |
| Storage Capacity | Hardware can save 100 spectral data and software can store unlimited light sources |
| Preset Light [Not sure all the photos are in.] | Standard D50-D75, mean colour index Ra>97; A/H, average colour index >95 (Note: not all levels of light are guaranteed) |
| Colour temperature range | 2,000~20,000 |
| Max. photo [4 light sources at approximately 1.5m / D65 light source] | Up to about 2150 lux. |
| Uniformity [4 light sources approximately 1.5 m away / D65 light source / lighting 1422*800 mm range] | 90 % |
26 visible-light channels covering 380-780nm. The spectrometer can be a Konica Minolta CL500A or an internal spectrometer. Standard-spectrum reproduction: with a spectrometer, fits CIE A, H, D50, D65, D75 and other illuminants over 2000K–20000K, including black-body radiation locus simulation. Each channel supports 60000 brightness levels and fine adjustment over 0-60,000 while maintaining light quality. Sources can be controlled individually or cascaded, for example to illuminate charts from both sides or form a light-source room using multiple ceiling-mounted units. Color-rendering index CIE Ra: D50-D75 >97; CIE A/Horizon >95 (best). Each emitting unit measures 600x300mm, and multiple units can be combined. User-friendly software controls individual channels, switching order and illumination time. Features include uniform, flicker-free illumination, flexible mounting, a lifetime up to several times that of traditional fluorescent lamps, and a cooling system supporting long-term stability.
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Yanding, as a nationally recognized high-tech enterprise, has always been driven by technological innovation and deeply engaged in the fields of testing equipment and image quality.
The company is headquartered in Zhangjiang Qingpu Park, with its core office base located in Shanghai Zhangjiang Science City, an innovation highland. It has also established R&D and operation centers in Shenzhen, Beijing, and South Korea, building a global technology R&D and service network to efficiently respond to domestic and international customer needs.
For many years, Yanding has focused on technological breakthroughs in the field of image quality. Its main business covers the full-chain R&D, design, manufacturing, and sales of high-precision instruments, high-end mass production equipment, image analysis algorithms, and industrial software. Relying on more than ten years of deep accumulation in core technology fields such as ultra-complex hardware boards and platform-level industrial software, the company has formed full-stack self-research and delivery capabilities from high-precision optical instruments, image quality analysis and calibration algorithms, to motion control software, optical lenses, image acquisition boards, image test charts, and mass production testing equipment, providing customers with end-to-end solutions.
The founding team and core members bring together senior technical management talents from well-known domestic and overseas enterprises, with an average of over 20 years of frontline R&D and operation management experience, and a deep understanding of international cutting-edge technology paths and industry trends. The company has assembled an R&D team composed of talents from famous domestic and overseas universities, highly skilled and continuously pursuing innovation. As of the end of 2024, the company has more than 170 employees, with R&D and technical personnel accounting for over 60%, injecting strong momentum into continuous technological breakthroughs and global market expansion.