The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2026
Filed:
Jul. 15, 2022
Somar Corporation, Tokyo, JP;
Naoki Sakazume, Tokyo, JP;
SOMAR CORPORATION, Tokyo, JP;
Abstract
A lens hood has an antireflection film for shielding an unnecessary light entering a photographic lens of a camera. Here, (A) indicates a resin component, (B) unevenness forming particles, (B1) inorganic-type small particles having a particle diameter (d1) of 0.05 μm to 0.4 μm, (B2) inorganic-type large particles having a particle diameter (d2) of 2 μm to 6 μm, and (C) a diluent solvent. The antireflection film is a membrane formed from a liquid composition via spray coating and has a thickness of 2 to 40 μm. The liquid composition has at least (A), (B) and (C). The (B) is contained in an amount of 20% by mass to 60% by mass in 100% by mass of a total amount of the total solid content in the composition. The (B) contains (B1) and (B2) in an amount of 90% by mass or more. A mass ratio of (B2) to (B1):1 is 1.8 to 3.3.