Musou Black IR Flock Sheet – black fabric for infrared light absorption

A black that works where the eye cannot see. Musou Black IR Flock Sheet is an electrostatically flocked rayon material developed to suppress reflections and stray light across the visible and the near infrared (NIR) – for LiDAR development, machine vision, sensor calibration and optical test environments.

IR Flock Sheet in brief

• Total reflectance 0.3 % @ 550 nm in visible light · 0.3 % @950 nm · 0.5 % @1500 nm · ≈0.75 % @2500 nm (AOI 8°)
• Working range 250–2500 nm – the only material in our range whose reflectance stays below 1 % across the whole range
• Material: rayon base fabric + electrostatically flocked rayon pile, carbon-containing fibres
• Thickness 0.9 mm ± 0.2 mm
• A4 sheets (21 × 29.7 cm, without adhesive) in stock · metre goods 950 mm wide, lengths 1–10 m, and a 20 m roll made to order
• Also available with adhesive backing as a made-to-order item
• Handling: can be cut, hung and sewn into a curtain
• Official importer and Official Distributor in Finland – products come directly from Koyo Orient Japan, listed on the manufacturer's Distributors page

Ordering and price

A4 sheets (without adhesive) are in stock – order directly on this page. The sheet ships in 1–3 working days and lets you test the material in your own sensor or test setup before a larger order.

Metre goods, rolls and adhesive-backed versions are made to order: width 950 mm, lengths 1–10 m and a full 20 m roll, without adhesive or with adhesive backing. Lead time is 1–3 weeks. Tell us the application, length and version: request a quote for metre goods.

Why ordinary black is not enough

Many black materials look very dark to the eye but reflect considerably more strongly in the near infrared. That is exactly the range most current sensor systems work in: proximity sensors, Time-of-Flight cameras, LiDAR, face recognition and vehicle cameras. The human eye does not notice the difference – the NIR sensor does.

Applications

• LiDAR development and sensor calibration, optical tunnels and prototype enclosures
• Driver and occupant monitoring (DMS/OMS) test environments
• Time-of-Flight cameras, 3D cameras, robotics and gesture recognition
• Machine vision and automated optical inspection (AOI)
• NIR darkrooms, test chambers and NIR photography backdrops

Musou Black fabrics compared

• IR Flock Sheet – the only one whose reflectance stays below 1 % in the near infrared as well
• KIWAMI – the blackest in visible light (99.905 %), but not recommended for IR use
• VL Flock Sheet – the more affordable basic choice for visible light, no IR suppression
• Fabric FR – flame retardant, for public spaces

950 nm (the LiDAR and machine-vision band): IR Flock Sheet reflects 0.3 % – the other materials at the same wavelength: paint 2.0 %, VL Flock Sheet 10.0 %, KIWAMI 37.7 % and Fabric FR 46.6 % (manufacturer's measured values).

Which black do you actually need? Compare all five materials →

See the whole fabric range or the Musou Black world.

Measured values and handling

Manufacturer's note: the values are not guaranteed, and there can be slight variation between production lots. Figures marked with an approximation sign (≈) have been read from the manufacturer's 250–2500 nm measurement curve (August 2026). If you are building a measuring instrument, ask us for the numerical values and lot data.

Because of the flocking, fine fibre dust can come loose from the material. The manufacturer advises caution if cleanliness is an absolute priority or the material goes inside a precision instrument – for those cases a fibre-free alternative is often better. Creases can be steamed out without touching the surface with an iron.

Frequently asked questions

Is Dekoja.net an official importer?
Yes. Dekoja.net is the official importer of Musou Black products and Koyo Orient Japan's appointed distributor (Official Distributor) in Finland. You will find us on the manufacturer's own Distributors page. In practice this means the products come straight from the factory, their origin is verified, and we have the manufacturer's technical support and documentation available even for demanding projects.

Why choose IR Flock Sheet over KIWAMI?
KIWAMI is the blackest in visible light, but the manufacturer does not recommend it for infrared use. IR Flock Sheet's reflectance stays below 1 % across the whole 250–2500 nm range: 0.3 % @ 550 nm in visible light, 0.5 % at 1500 nm and about 0.75 % still at 2500 nm. For NIR applications it is therefore the right choice.

Does IR Flock Sheet also work in visible light?
Yes. In visible light the reflectance is 0.3 % @ 550 nm, so the material serves the eye and the sensor at the same time. It is a practical choice when a test environment needs both.

Is an adhesive-backed version available?
Yes, as a made-to-order item: every size is also available with adhesive backing, lead time 1–3 weeks. The A4 sheets in stock are without adhesive. The adhesive version is handy for the inner surfaces of devices and enclosures.

Can the material be cut and sewn?
Yes. IR Flock Sheet can be cut, used as a covering material, hung or sewn into a curtain. It also suits large surfaces and temporary test setups.

Documents

• Safety data sheet (SDS, EN)
• RoHS test report (PDF)

Ask us more: get in touch – we serve companies, research institutes and educational institutions with quotations and invoicing.