Optical system and camera module comprising same
US-2024377616-A1 · Nov 14, 2024 · US
Two-stage optical object molding using pre-final form
US9013797B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9013797-B2 |
| Application number | US-201414164877-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 27, 2014 |
| Priority date | Feb 9, 2011 |
| Publication date | Apr 21, 2015 |
| Grant date | Apr 21, 2015 |
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Abstract
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A lens, such as a lens for use in a wafer-level camera, is made by forming a polymeric material with at least one master to form a pre-final lens. The pre-final lens forms a majority of a final volume of the lens. The pre-final lens is allowed to harden, during which it may sag or shrink. An aliquot of polymeric material is added to the lens and formed with the same master with a spacer, or with a second master, to form a first surface layer that provides correction between the pre-final lens shape and a final desired lens shape. In an embodiment, the surface layer has similar or identical index of refraction to the pre-final lens. In an embodiment the lens is formed on a substrate. In an embodiment, a send master, or master pair, are used to form a lens having upper and lower curvature, with a second aliquot of polymeric material forming a second surface layer on a surface of the lens opposite to the first surface layer.
First claim
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What is claimed is: 1. A lens comprising: a blob that forms a majority of a final volume of the lens, the blob being made of a moldable material that experiences shrinkage during curing, and a top layer formed directly atop the blob, wherein a combination of the blob and the top layer conforms to, or closely approximates, a desired final lens shape, and wherein an optical index of refraction of the top layer is similar to an index of refraction of the blob.…
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Operations & Transport · mapped topic
Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
Physics · mapped topic
Operations & Transport · mapped topic
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- What does patent US9013797B2 cover?
- A lens, such as a lens for use in a wafer-level camera, is made by forming a polymeric material with at least one master to form a pre-final lens. The pre-final lens forms a majority of a final volume of the lens. The pre-final lens is allowed to harden, during which it may sag or shrink. An aliquot of polymeric material is added to the lens and formed with the same master with a spacer, or wit…
- Who is the assignee on this patent?
- Omnivision Tech Inc
- What technology area does this patent fall under?
- Primary CPC classification G02B3/00. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 21 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).