This article introduces the characteristics and types of near-infrared transmissive black dispersions and their expected applications in the future.
What is near-infrared transmissive black dispersions?
Near-infrared rays are light (electromagnetic waves) that cannot be seen by the human eye and have a wavelength close to that of red visible light. It is applied to sensing technologies such as infrared cameras used for night vision, smart devices, and remote controllers for home appliances such as TVs and air conditioners.TOKUSHIKI's near-infrared transmissive black dispersions is a fine-grained dispersion of pigment with two characteristics: black and light-transmissive in the near-infrared range. Therefore, it is possible to sense light in the near infrared region while having a function of hiding the base and light shielding.
Another feature of this product is its compatibility with polyurethane resins, acrylic resins, ester resins, and other resins, as well as with various solvents and water.
Characteristics of near-infrared transmissive black dispersions
IR 50%：Near-infrared transmissive black dispersion pigment concentration 50% (in coating)
CB 50%: Common carbon black dispersion pigment concentration 50% (in coating)
The wavelength range of visible light is 360 nm to 750nm, and the longer wavelength side than 750nm is called near infrared.
As can be seen from the graph, a typical carbon black dispersion does not penetrate in any region, but near-infrared transmissive black dispersions rises from around 650nm, peaks at wavelengths longer than 750nm, and nearly 90% of the peaks are transmitted.
Because of its black dispersion, which transmits light (electromagnetic waves) in the near infrared region, it is expected to be applied to many applications, such as new designs for various sensing devices and selectivity of transmission by wavelength.
Application and lineup of near-infrared transmissive black dispersion
The use of the near-infrared transmissive black dispersion is best suited for use in black paints and inks for electronic materials, black resists, and IR sensors.Summary
- TOKUSHIKI's near-infrared transmissive black dispersions have the advantages of being black and transmitting light in the near-infrared range.
- TOKUSHIKI's near-infrared transmissive black dispersions can sense light in the near-infrared region while providing hiding and light-shielding functions.
- TOKUSHIKI near-infrared transmissive black dispersions are compatible with resins such as urethanes, acrylics, and esters, as well as with various solvents and water.
