NIR-absorbing material for stray light control – LiDAR, machine vision and sensor development
Black to the eye is not black to a sensor. Most black materials look dark in visible light but reflect considerably more strongly in the near infrared – exactly the range where LiDAR, Time-of-Flight cameras, driver monitoring and machine vision operate. The difference is invisible to the human eye. It shows up in the measurement data.
Musou Black IR Flock Sheet was developed for this problem: an electrostatically flocked rayon material whose carbon-containing fibre structure keeps total reflectance below 1 % across the whole 250–2500 nm range (AOI 8°) – about 0.25–0.30 % in visible light and about 0.75 % still at 2500 nm.
Technical data
- Total reflectance ≈0.25–0.30 % in visible light · ≈0.45 % @1500 nm · ≈0.75 % @2500 nm (AOI 8°)
- Working range 250–2500 nm – the only material in the Musou Black family 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
- Sizes: A4 sheet or roll 950 mm wide, 0.5–20 m
- Mounting: available with adhesive backing or without
- Handling: can be cut, hung and sewn into a curtain
- Certifications: RoHS and REACH
Applications
LiDAR development and sensor calibration
LiDAR systems operate in the near infrared and are sensitive to internal reflections, stray light and back-reflections from the test environment. IR Flock Sheet can be used in test setups, prototype enclosures, optical tunnels and calibration environments – more repeatable measurement conditions mean more comparable development data.
Driver and occupant monitoring (DMS / OMS)
Driver monitoring uses NIR illumination to track the face, gaze and head position under varying lighting. Reflective surfaces in the test setup distort results or produce false signals. A low-reflectance background makes the test conditions for NIR cameras and in-cabin sensors controllable.
Time-of-Flight and 3D cameras
ToF cameras measure differences in light travel time and are sensitive to multipath reflections. Covering non-essential surfaces with IR Flock Sheet reduces sources of error in depth measurement – useful in the development of 3D cameras, robotics and gesture recognition.
Machine vision and automated optical inspection (AOI)
In machine vision systems, reflections and stray light degrade recognition accuracy, particularly when the camera or the illumination works across visible light and the near infrared. As a background, a shield or the inner lining of an inspection station, the material improves contrast and stabilises imaging conditions.
NIR darkrooms, test chambers and NIR photography
Lining for large surfaces, curtains and backdrops for repeatable NIR test environments. The material is flexible and can be sewn into a curtain, so it also suits temporary setups.
An honest limitation – read this before ordering
We do not sell this into the wrong application. Two limitations worth knowing in advance:
- Fibre dust. Fine fibre dust can come loose from the flocking. 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 – tell us your application and we will point you to the right material rather than sell you this one.
- No space certification. No outgassing certification (e.g. ASTM E595) has been stated for the material, so it should not be assumed flight-qualified for space applications.
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.
Which material suits which need
| Need | Material | Why |
|---|---|---|
| Near infrared, LiDAR, sensor development | IR Flock Sheet | The only one whose reflectance stays below 1 % in the NIR range as well (250–2500 nm) |
| Visible light, affordably and over a large area | VL Flock Sheet | ≈0.25–0.50 % reflectance in visible light, tolerates contact – but rises steeply from about 700–750 nm |
| Maximum blackness in visible light | KIWAMI | 99.905 % absorption – reflectance rises steeply from about 800 nm, so not for IR use |
| Public space, fire inspection | Fabric FR | Flame-retardant version for theatres and events |
| A rigid object or a shaped surface | Musou Black paint | Applied directly to the piece, including 3D shapes |
Start with a sample
We always recommend an A4 sample before a large order: measure the material with your own sensor at your own wavelength before committing to metres. Tell us the application and the wavelength range and we will send the sample and the quotation together.
Order an A4 sample or request a quote for your project →
Include in your message: the application, the wavelength range, the size or number of metres needed, adhesive or no adhesive, and the schedule. With those details you get a quotation in one round.
For business customers
Dekoja.net (Noin Company Oy) is a Finnish importer and reseller. We serve companies, research institutes and educational institutions with quotations and invoicing. We also deliver within the EU.
Tel. +358 50 544 2104 · info@dekoja.net · The full Musou Black range
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Payment methods
Payment service terms
We use Paytrail, which is a safe payment method for you. Paytrail Oyj has a payment institution license granted by the Financial Supervisory Authority. The service is maintained by Paytrail Oyj (VAT FI21228397), and it is part of the Nets family.
The Paytrail payment forwarding service forwards your payment to the Noin webstore merchant. If your bank statement or credit card bill shows Paytrail Oyj, we have forwarded your payment.
Noin webstore acts as a marketer of products and services and as a supplier of products to the customer. The online store takes care of the legal obligations related to the sale, as well as other obligations defined by itself. If you want to make a complaint or return a product, you should contact the online store from which the product was ordered directly.
We also have:
- The completely secure Shop Pay payment method offered by the Shopify trading system, you can read more about the payment method here (the link takes you to the Shop Pay application's front page)
- Paypal, which is a reliable and secure international payment service provider. You can read more about PayPal payment methods here
- Google Pay, which is a worldwide big, easy and reliable and fast payment method. Google Pay and/or Google Wallet can be found on almost all Android phones and several different smartwatches. It's a quick way to pay for purchases in store, online and in apps. Google Pay works like a contactless payment: just unlock your phone and bring it near the payment terminal. It is used by many large companies and e.g. Finnish capital banks such as OP and Nordea . You can find more information about the Google Pay and Google Wallet applications here .
Bank charges
You can use the payment buttons of all Finnish banks. You can pay with the payment buttons of Aktia, Danske Bank, Handelsbanken, Nordea, Oma Säästöpanki, Osuuspanki, POP bank, Säästöpanki, S-banken and Ålandsbanken. Your bank statement shows Paytrail Oyj as the payee, we forward your payment to the online retailer. About webstore, you will be directed directly to your own bank to make the payment securely.
Credit card payments
You can pay in the online store with Visa, Visa Debit, Visa Electron, MasterCard, Debit MasterCard and American Express cards. The online store uses the international Verified by Visa, MasterCard SecureCode and American Express SafeKey authentication services.
Paytrail Oyj appears as the recipient of the payment on the card invoice and forwards the payment card payment paid by the customer directly to the merchant. Card payment is made using a securely protected payment form, and the payment card information is not stored in the online store's systems.
Mobile payment methods
Mobile payment methods Pivo, MobilePay and Siirto are services that work in the application, with which you can pay for online purchases as a bank transfer from your account or as a card payment from your card by accepting the payment in the respective application.
Pivo also accepts Siirto payments, which means that the payment can be accepted in any application that supports Siirto. Apple Pay is a service that works on an Apple device, which allows you to pay for purchases with a payment card connected to the device.
- Pivot
- Terms of use are available on Pivo's website.
- Pivo's terms of use
MobilePay- The terms and conditions are available on MobilePay's website.
MobilePay terms and conditions
Move
Conditions applicable to transfer payments:
OP's general euro payment terms (.pdf)
Terms of use of the transfer service at Nordea (.pdf)
Apple Pay
Terms of use are available on Apple's website.
Apple Pay terms of use
Invoice and installment services
We offer invoice and installment payment services to our customers through Paytrail.
You can pay for your order with OP Invoice , and through us you will also receive Walley invoicing, which for the time being only offers an invoice and partial payment option in our store for business customers. With OP Invoice, you get up to 45 days of interest-free payment time, or you can pay your invoice in installments and in smaller and more instalments. Please familiarize yourself with the credit terms and price list carefully before ordering.
Please read the specific terms and conditions specific to the financing company, which you will see when you accept the payment. When you accept the payment, you also accept the finance company's terms and conditions.
About us and contact information
Dekoja.net – specialist products you will not find in every shop
Dekoja.net is a Finnish online shop built around three things: LPG for professional use, Musou Black materials and Engasco fire tables. The range also includes lighting and other design and lifestyle products.
We serve both consumers and businesses. We import most of our products ourselves, sell from our own stock and also deliver to other EU countries.
LPG for professional use
We deliver LPG to restaurants, grill areas, events and work machines: 5, 10, 11 and 33 kg cylinders as well as forklift and work machine gas. With the exchange service the driver brings a full cylinder and takes the empty one away on the same visit – in the Helsinki region delivery takes 1–2 business days.
We do not have a pick-up point; LPG is always delivered to you. In exchange we only accept Finnish LPG cylinders that are in use in Finland, are intact and serviceable, and whose periodic inspection is valid. See our LPG range.
Musou Black – official importer in Finland
We are the official importer of Musou Black products in Finland. Musou Black is a highly light-absorbing family of paints and materials made by Koyo Orient Japan (KoPro): the paint absorbs up to 99.4 % of visible light. The range also includes KIWAMI fabric, VL and IR Flock Sheet materials and the flame-retardant Fabric FR.
We do not claim that Musou Black is the blackest product in the world – figures from different manufacturers cannot be compared directly, because the wavelength range, angle of incidence and measurement method all vary. We will also tell you when another material suits your application better. We think that is better service than superlatives. Explore the Musou Black range.
Engasco fire tables for terraces
We import Engasco fire tables from Croatia directly from the manufacturer for the terraces of restaurants, hotels and cafés. CE-approved gas-fired tables in four models. In the Helsinki region you can also get the LPG from us for the same site, so the fire table and the gas deliveries come from one partner. See the Engasco models.
Business sales and customised products
We also sell products and services to businesses. Our business range includes products that are not yet in the online shop – just ask and we will discuss your needs. Business customers can request an invoice against a business ID, and a fixed delivery price is agreed for recurring deliveries.
Many of our products are also available with your own logo, image or text – embroidery, printing and laser engraving work well for corporate gifts and event promotional items. Read more on our partner You Name It's website.
We also work with Finnish manufacturers such as AamuFlow, which makes clothing and employs small Finnish entrepreneurs.
Partnerships and new products
We are interested in new products, distribution agreements and partnerships. Suppliers, manufacturers and others looking to connect: leave your details using the form below and we will get in touch.
We are also glad to receive feedback on what we do – it is the best way to improve.
Contact details
Noin Company Oy
Business ID 3129428-3
Office and return address: Huntutie 26, 00950 Helsinki, Finland
Warehouse: Hiojankuja 3, 02780 Espoo, Finland
info@dekoja.net
+358 50 544 2104
Privacy statement
Data protection
We collect personal data to manage the customer relationship. The legal basis for the processing of personal data is the agreement between us and the resulting statutory obligations. Providing personal information is a prerequisite for ordering the contract products from our online store.
We also collect personal data for marketing purposes. The legal basis for processing personal data is the subscriber's consent.
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Your personal data will be received by:
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Storage of personal data:
- in the online store for five (5) years
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Please also note that you only have the "right to be forgotten" if the company has no legal obligations to continue processing your personal data.
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Noin Company Oy
Huntutie 26
00950 Helsinki
VAT FI31294283
info@dekoja.net
Delivery, exchange and return conditions
Noin Company Oy (VAT FI31294283) sells products to individuals and companies of legal age in Finland and the EU region. The consumer sales prices of the products include value added tax. Business sales prices are indicated with VAT 0%. We reserve the right to change prices and delivery costs.
Ordering
Products are ordered in the online store by moving them to the shopping cart and paying for the contents of the shopping cart at the online store checkout. All customer information is treated confidentially. When ordering from the online store, you are required to have familiarized yourself with and agreed to the delivery conditions valid at any given time.
After a successful order, an order confirmation will be sent to your email. Sending confirmation messages requires providing an email address when ordering.
You can see the delivery costs of your order after choosing the payment and delivery method. We deliver orders as registered (e.g. postal packages) or unregistered delivery, of which registered shipments can be tracked with a shipment ID.
Our most common delivery times to Finland are 1-3 days, and 1-7 days to other European countries, depending on the product, order and delivery method. Regarding our products in stock, we will collect and pack your order without delay, but depending on the driver of your shipment, delivery times may be longer for some of the products in our selection. So please be patient, we always try to deliver your order as quickly as possible. We are not responsible for delays caused by force majeure or indirect harm caused by delays. Deviating delivery times will be notified separately if necessary.
According to the Finnish Consumer Protection Act, you have the right to exchange or return all or part of your order within 14 days of receiving the order. The right of return only applies to unused and salable products in the original packaging. If you want to return a delivered order, first contact us by email: info@dekoja.net and tell us why you want to return the product. Also include your name and contact information in the message.
Noin Company Oy
Helsinki Finland
If the product is lost or damaged during transport or otherwise does not match your order, you must report the error to the parties mentioned in the exchange and return conditions within 7 days at the latest. If the package is damaged in transit or with the broker, a complaint about the product must be made immediately to the relevant party.