Near-infrared absorbing dye（CIR）
A dye that exhibits characteristics of absorption in the near-infrared range (780-1500 nm).
Ionic organic dye featuring a cationic backbone based on a phenylenediamine structure.
Features
Monovalent aminium salt
Despite slight absorption in the visible light region, it effectively blocks a broad range of near-infrared light.
Divalent diimonium salt
The visible light region allows light to pass through while effectively blocking specific near-infrared wavelengths.
Durability has been further improved through the development of pigment-based materials using our proprietary technology.
(Solvent solubility and absorption wavelength can be fine-tuned depending on the structure.)
Use of the heat ray absorption function
- Heat storage, thermal insulation fiber (warm clothing and ski wear)
- Hot-wire shielding
Use of specific wavelength light absorption functions
- Quencher: a stabilizer of cyanine dyes
- Functional ink (for special readers)
- Photothermal conversion material (e.g., flash fixing, thermal CTPplate sensitizers, laser welding)
- Optical filters for image sensors
- Resin curing using near-infrared light
Physical properties by item
*This table can be scrolled horizontally.
| CIR-960 | CIR-RL | CIR-FS265 | |
|---|---|---|---|
| Classification | Monovalent aminium salt (dye-based) | Divalent diimonium salt (dye-based) | Divalent diimonium salt (pigment-based*) |
| Appearance | Reddish-black powder | Reddish-black powder | Green powder |
| Maximum absorption wavelength | 954 nm | 1079 nm | 1065 nm |
The pigment-based type self-disperses in specific solvents, enabling easy dispersion into liquid form.
- The above products are standard production items. We are actively developing structural designs and processing technologies to further improve visible light transmittance and heat resistance, and we also offer a wide range of originally developed products.
Contact
- Carlit Co., Ltd. Electronic Materials Dept.
- 03-6685-2047
- Reception hours
- 9:00 a.m. to 5:00 p.m.
(excluding Saturdays, Sundays, national holidays and the New Year holiday)