Synthetic resin lens and eye lens article thereof
AssigneeYamamoto Kogaku Co., Ltd.
InventorsFumio Ishibashi, Jindai Yamaguchi, Keishi Yoshikawa
Life of this patent
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Abstract
The synthetic resin lens has a function to generate heat by selectively absorbing infrared rays with wavelengths of 780 to 3000 nm. The synthetic resin lens includes an infrared absorber. Selective absorption of infrared rays allows the synthetic resin lens itself to generate heat and thus the lens of the present invention has the same function as being electrically heated to prevent fogging.
Claims7
An eye lens article comprising a double structural lens member in which an outer lens and an inner lens are joined together with a space therebetween, wherein a synthetic resin lens, which includes an infrared absorber by one of blending, coating and vapor-depositing, and having a function to generate heat by selectively absorbing infrared rays with wavelengths 780 to 3000 nm, is used as the outer lens of the lens member, and a lens reflecting infrared rays with wavelengths of 780 to 3000 nm is used as the inner lens of the lens member.
Dependencies are inferred from the claim text.