Back to results
US 2019/0377104 A1Published application
Lens and lens manufacturing method
AssigneeNidec Corporation
InventorsMuneyuki OTANI, Takashi NAKAYAMA, Takanori KAMOTO
Life of this patent
Estimating the term…
Abstract
A lens includes a lens body that is made of resin and that includes a convex surface, a buffer layer arranged on the convex surface, and an antireflection layer arranged on the buffer layer. The buffer layer has a thickness of about 0.7 μm or more and about 6.1 μm or less, and the antireflection layer has a thickness of about 0.07 μm or more and about 0.57 μm or less. In a more preferable lens, the buffer layer has a thickness of about 1.0 μm or more and about 5.0 μm or less, and the antireflection layer has a thickness of about 0.10 μm or more and about 0.50 μm or less.
Claims9
1-8. (canceled)
9:
- A lens comprising:
- a lens body that is made of resin and that includes a convex surface;
- a buffer layer arranged on the convex surface;
- and
- an antireflection layer arranged on the buffer layer;
- wherein
- the buffer layer has a thickness of about 0.7 μm or more and about 6.1 μm or less;
- and
- the antireflection layer has a thickness of about 0.07 μm or more and about 0.57 μm or less.
6 more elements
10:
- The lens according to claim 9, wherein
- the buffer layer has a thickness of about 1.0 μm or more and about 5.0 μm or less;
- and
- the antireflection layer has a thickness of about 0.10 μm or more and about 0.50 μm or less.
1 more element
11:
- The lens according to claim 9, wherein the buffer layer has a thickness of about 1.6 μm or more.
12:
- The lens according to claim 9, wherein the buffer layer has a thickness of about 4.4 μm or less.
13:
- The lens according to claim 9, wherein
- the buffer layer is made of resin including inorganic particles;
- and
- the antireflection layer is made of an inorganic oxide.
1 more element
14:
- A lens manufacturing method comprising:
- a step a) of forming a buffer layer having a thickness of about 0.7 μm or more and about 6.1 μm or less on a convex surface of a lens body made of resin;
- and
- a step b) of forming an antireflection layer having a thickness of about 0.07 μm or more and about 0.57 μm or less on the buffer layer.
1 more element
15:
- The lens manufacturing method according to claim 14, wherein in the step a), the buffer layer is formed by applying, onto the convex surface, a buffer-layer-forming material that is a liquid containing inorganic particles and resin.
16:
- The lens manufacturing method according to claim 14, wherein in the step b), the antireflection layer is formed by vapor deposition.