POROUS FILM, OPTICAL ELEMENT, OPTICAL SYSTEM, INTERCHANGEABLE LENS, OPTICAL DEVICE, AND MANUFACTURING METHOD OF POROUS FILM
A porous film is a porous film having a silica particle, wherein a refractive index is 1.1 to 1.25, and a contact angle with respect to water is equal to or more than 40°.
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Format: | Patent |
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Zusammenfassung: | A porous film is a porous film having a silica particle, wherein a refractive index is 1.1 to 1.25, and a contact angle with respect to water is equal to or more than 40°. |
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