Patent ID: 11971565
Assignee: PLATINUM OPTICS TECHNOLOGY INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. The absorption type near-infrared filter according to claim 1, wherein in the ultraviolet band, the difference between the wavelength with the transmittance at 80% of the absorption film in the infrared band and the wavelength with the transmittance at 80% of the absorption film in the ultraviolet band ranges between 126 nm and 164 nm; the difference between the wavelength with the transmittance at 50% of the absorption film in the infrared band and the wavelength with the transmittance at 50% of the absorption film in the ultraviolet band ranges between 195 nm and 239 nm; the difference between the wavelength with the transmittance at 20% of the absorption film in the infrared band and the wavelength with the transmittance at 20% of the absorption film in the ultraviolet band ranges between 244 nm and 309 nm.