Infrared absorbent

Details Infrared absorbent Infrared absorbent

1985-06-21

1988-08-30

Garvin, Patrick P.

Compositions

Light transmission modifying compositions

Infrared

556 20, 556113, 556136, 556137, 556150, 546270, 502400, 502401, 430616, F21V 904

Patent

active

047675713

ABSTRACT:
The present invention relates to an infrared absorbent comprising a metal complex. With the use of the infrared absorbent, there is provided an infrared absorbing material capable of absorbing near infrared light having a wavelength of 700-1500 nm or far infrared light with a high transmittance of visible light and a good fastness to heat and light. The infrared absorbent is suitable for various applications such as a safelight filter for infrared sensitive materials, control of growth of plants, cut-off of heat radiation, infrared cut filter harmful to tissues of human eyes, infrared cut filter for semiconductor light receiving elements or color solid image pick-up elements, and infrared cut filter for an optoelectronic integrated circuit wherein electrical and optical elements are incorporated in the same substrate.

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