PIGMENT COMPOSITION, FILM, OPTICAL LENS, AND OPTICAL WAVEGUIDE USED IN OPTICAL LENS FOR INFRARED SENSOR OR INFRARED COMMUNICATION APPARATUS OR OPTICAL WAVEGUIDE FOR INFRARED SENSOR OR INFRARED COMMUNICATION APPARATUS

Japanese Patent JP2023075930

A

To provide a pigment composition having a high refractive index and excellent transparency, heat resistance, and light resistance in applications of high refractive index materials used in an optical lens for an infrared sensor or an infrared communication apparatus or an optical waveguide for the infrared sensors or the infrared communication apparatus.SOLUTION: A pigment composition for use in an optical lens for an infrared sensor or an infrared communication apparatus, or an optical waveguide for the infrared sensor or the infrared communication apparatus, contains pigment, resin, and dispersant. Its refractive index at 23°C and a wavelength of 940 nm is 1.7 or higher, and when a film with a thickness of 1.0 μm is formed, the maximum absorbance at 780-870 nm is 1.0 or more, and the absorbance at 910 nm is less than 0.3. The pigment is an organic pigment having a squarylium, naphthalocyanine, or phthalocyanine structure.SELECTED DRAWING: None

JP6604928	Coloring composition, film and method for producing the film
JP2022066859	ORGANIC EL DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME
WO/2019/092988	IMAGING ELEMENT AND IMAGING DEVICE

MIKAMI JOSHI
YANAI HIROYUKI
ORIHARA YUYA
HIRASA YOSHIYUKI
SAKAGUCHI YUYA

JP2022183253A

May 31, 2023

November 16, 2022

Click for automatic bibliography generation  

TOYO INK SC HOLDINGS CO LTD

G02B5/20; C09B23/14; C09B57/00; C09B67/20

Previous Patent: Polyester film for release film, polyester film roll for release film, and method for producing poly...

Next Patent: Food for pests, poison bait for pests, and method for enhancing antiseptic effect of food for pests