Surface observation tool "D-Light" for detecting foreign substances, dirt, and scratches.

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ViEST

last updated：Feb 20, 2026

Shin Nippon Air Technologies Company Solution Division

[Demo unit available for loan] It can visualize foreign substances, dirt, and scratches on the surface. It is well-received as a daily use tool for yield management, quality control, cleaning management, and hygiene management!

D-Light is a compact, lightweight, high-output, and low-power consumption LED light source. We offer two types in our lineup: Type-F and Type-P. ■ D-Light Type-F This type allows for clear visual detection of foreign particles and dirt adhering to the surface of objects by making them luminescent. Additionally, the differences in the color of the emitted light can help estimate the type of contaminants. It is a surface observation tool that has never been seen before. ■ D-Light Type-P This type is suitable for observing surface conditions, such as detecting particles and scratches on surfaces and checking for unevenness. It can reduce the glare caused by diffuse reflection on surfaces that are difficult to observe, such as metallic paint surfaces of metals and automobiles, allowing for the visibility of foreign substances. It enables surface observation that was previously considered difficult with conventional lights. It can also be used to observe floating particles and mist. ★ This tool is helpful for improving the efficiency of visual surface inspections. ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝　　　Free rental of demo units is currently available. Please feel free to apply through "Contact Us." 　　We encourage you to try it out! ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝

Inquire About This Product

basic information

■Weight: 181 [g] ■Dimensions: W139 × D22 × H33 [mm] ■Light Color: ・D-Light Type-F: Violet ・D-Light Type-P: Green

Price range

Delivery Time

Applications/Examples of results

We are adopted in various situations that require regular cleanliness management, including: - Yield management on production lines - Quality control such as pre-shipment inspections - Quality and hygiene management related to food, biotechnology, and pharmaceuticals - Surface quality inspection of electronic precision devices like mobile terminals, automobiles, and materials - Surfaces of metals, plastics, resins, etc. Additionally, we have a proven track record of implementation in a wide range of industries, including research facilities and medical institutions.

Detailed information

Sanitary ware (before D-light irradiation)
Sanitary ceramics (under D-light irradiation) D-light was applied to the sanitary ceramics. The dirt shines and can be clearly seen.
Keyboard (before D-light irradiation)
Keyboard (D-Light in use) The D-Light has been applied to the keyboard. You can check for dust and dirt that has adhered to it.
Perforated floor panel of the clean room (before D-light irradiation)
Perforated floor panel in the clean room (during D-light irradiation) Due to the rough surface, normal lights cause severe diffuse reflection, making observation difficult. D-light can reduce the effects of diffuse reflection, allowing for visibility of dirt and falling dust.
Around the car door handle / Metallic painted surface (under light irradiation) When light is irradiated on the metallic painted surface of the car, as shown in the photo, the surface condition cannot be observed due to diffuse reflection.
Around the car door handle / Metallic painted surface (under D-light illumination) The influence of diffuse reflection on the metallic painted surface can be almost eliminated, allowing for the visual detection of adhered dust.