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US 8,134,788 B2Granted
Hybrid optical element
AssigneePanasonic Corporation
InventorsKenji Inoue, Junpei Sasaki
Life of this patent
Estimating the term…
Abstract
A hybrid optical element includes: a glass substrate having a first optically functional surface and a second optically functional surface; and a resin layer bonded to the second optically functional surface. The glass substrate further has an outer peripheral surface provided around the first optically functional surface. The outer peripheral surface has a surface roughness Ra of at least 1 μm but not more than 20 μm.
Claims6
A hybrid optical element comprising:
- a glass substrate having a first optically functional surface facing one side of an optical axis direction, a second optically functional surface facing the other side of the optical axis direction, and an outer peripheral surface provided around the first optically functional surface;
- and
- a resin layer bonded to the second optically functional surface of the glass substrate,
- wherein the outer peripheral surface has a surface roughness Ra of at least 1 μm but not more than 20 μm.
1 more element
A hybrid optical element comprising,
- a glass substrate having a first optically functional surface facing one side of an optical axis direction, a second optically functional surface facing the other side of the optical axis direction, and an outer peripheral surface provided around the first optically functional surface;
- and
- a resin layer bonded to the second optically functional surface of the glass substrate,
- wherein the outer peripheral surface is rougher than the first optically functional surface,
- wherein the glass substrate has an almost circular shape when viewed from the optical axis direction, and
- when a radius of the glass substrate is referred to as X and a width of the outer peripheral surface is referred to as Y, a ratio Y/X of the width Y of the outer peripheral surface to the radius X of the glass substrate is at least 0.08 but not more than 0.4.
3 more elements
Dependencies are inferred from the claim text.