Fineshut KIWAMI

Hemispherical reflectance of 1% or less in the visible to near infrared region (250 to 2000 nm)

Fineshut SP is a light-absorbing anti-reflective sheet developed by Koyo Kogyo Co., Ltd., our predecessor. It is an ultra-thin foam polyurethane sheet, which combines excellent optical properties with an amazing thickness of 0.22 mm ~.

Fineshut KIWAMI is a special upgrade that improves the surface shape of the Fineshut SP and further improves the anti-reflective performance. It is formed of asperities like light shielding grooves and absorbs light emitted from the direction perpendicular to the grooves.

Especially in the near infrared region, it has the best anti-reflection performance among our materials we handle, and achieved a total hemispherical reflectance of 1% or less in a wide wavelength range of 250 to 2000 nm. This amazing performance is achieved with a thinness of only 0.37 mm.

The base material is fine urethane foam similar to Fineshut SP, so it retains its features such as durability and ease of handling. There are no hair loss problems specific to flocking and large reflections in the near infrared range, and even with a slight contact like plating and deposition coating, gloss is generated and performance does not deteriorate significantly.

We also comply with RoHS 2.0 regulations.

Live shot comparison with other anti-reflective material

The shutter speed of the camera and exposure setting are changed before shooting.

Here are two images taken with a normal camera and a near infrared camera. You can compare and confirm the stable anti-reflection performance of Fineshut KIWAMI.

Finshut KIWAMI taked by Near infrared camera

Applications

Suppress stray light for optical device
Absorption of scattered light by laser processing machines
Non-reflective table for 3D scanning
Work bench mat for assembly and visual inspection
LiDAR target
Still life photograph's background

Non reflection Black panel. (Right)

... or make something BLACK

It is also recommended for mount adapter.

For this, we recommend applying the FineShut by using the water-pasting method. Please take a look at the video below!

Also available as cut parts

When we receive orders for Fineshut KIWAMI as cut parts, we propose an estimate that minimizes material costs by selecting the size with the highest material yield. Please feel free to contact us via email or contact form.

In addition, black double-sided tape made of PET substrate is laminated as a standard specification, but we can change it to the double-sided tape you desire.

Product Specifications

Thickness

　Total 0.42mm ± 0.05 mm

　(Fineshut KIWAMI 0.37 mm + Thinner Adhesive tape 0.05 mm)

Standard sheet size

　53mm x 190mm

　280mm x 480mm

Caution on use

In order to maximize the light absorption effect by the groove shape on the surface, please make sure that the direction of the grooves are perpendicular to the light source.

There is light transmission due to microfoaming and grooves, so it can not be used for shading applications.

Download Catalogue and reflectance data

English Catalogue

EN Fineshut Catalogue190809.pdf

Adobe Acrobat Document 446.8 KB

Download

Chinese Catalogue

CN Finshut Catalogue201120.pdf

Adobe Acrobat Document 272.2 KB

Download

Data of Reflectance

EN Fineshut Reflectance200423.pdf

Adobe Acrobat Document 1.2 MB

Download

Purchasing

This product is available for every optical design company who is troubled with stray light removal and anti-reflection measures, and for every general user who work with DIY light. With just one click, you will kindly be redirected to the Amazon sales page using the links below.

If you are considering purchasing multiple sheets for company use, we may be able to offer cheaper proposals through direct sales, so please kindly contact us.