Lens hood

JP7844113B2Active Publication Date: 2026-04-13SOMAR CORP
View PDF 7 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
SOMAR CORP
Filing Date
2021-07-21
Publication Date
2026-04-13

Smart Images

  • Figure 0007844113000002
    Figure 0007844113000002
  • Figure 0007844113000003
    Figure 0007844113000003
  • Figure 0007844113000004
    Figure 0007844113000004
Patent Text Reader

Abstract

To provide a lens hood 1 which has an antireflection film 4 that is effective for light-shielding of unnecessary light incident on a photographic lens of a camera, and has high designability.SOLUTION: (A) A resin component, (B) particles for forming ruggedness, (B1) inorganic small particles having a particle diameter of 0.05-0.4 μm, (B2) inorganic large particles having a particle diameter of 2-6 μm, and (C) a diluent solvent. A lens hood 1 that is mounted on a subject side of a photographic lens and shields unnecessary light incident on the photographic lens has an antireflection film 4 on an inner wall surface 2a of a hood body 2. The antireflection film 4 is formed of a film having a thickness of 2-40 μm by spray coating formed of a liquid composition. The liquid composition contains (A), (B) and (C). (B) is contained in an amount of 20-60 mass% in 100 mass% of the total amount of the total solid content of the composition. (B) contains 90 mass% or more of (B1) and (B2), and a mass ratio of (B2) to (B1):1 is 1.8 to 3.3.SELECTED DRAWING: Figure 3
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Recording liquid and recording method

    JP2003105235A

  • Light shielding film

    JP2013054393A

  • Lens hood and imaging apparatus

    JP2016051012A

  • Lens hood and lens device with the lens hood

    JP2016090950A

  • Transmissive screen

    JP2019200392A