US 10,845,571 B2Granted

Optical lens

AssigneeRays Optics Inc.

InventorsYing-Hsiu Lin, Ching-Sheng Chang, Chen-Cheng Lee, Kuo-Chuan Wang

Life of this patent

Estimating the term…

Loading patent…

Abstract

An optical lens includes a first lens group and a second lens group arranged in order from a first side to a second side, and an aperture stop disposed between the first lens group and the second lens group. The optical lens satisfies the condition of LT/IMH<4.7, where IMH is semi-diagonal image height on an image plane, and LT is a distance along an optical axis between a surface of a first lens of the first lens group facing the first side and a surface of a last lens of the second lens group facing the second side. The first lens is closest to the first side among the first lens group, and the last lens is closest to the second side among the second lens group.

Claims20

Dependent claims

An optical lens, comprising:

a first lens group and a second lens group arranged in order from a first side to a second side;
an aperture stop disposed between the first lens group and the second lens group, the optical lens having at least six lenses and at most nine lenses with refractive powers, a full field of view of 160 degrees to 180 degrees, and an entrance pupil diameter of greater than 2 mm, and the optical lens satisfying the condition:
LT/IMH<4.7, where IMH is semi-diagonal image height on an image plane that equals half of an image circle, LT is a distance along an optical axis between a surface of a first lens of the first lens group facing the first side and a surface of a last lens of the second lens group facing the second side, the first lens is closest to the first side among the first lens group, and the last lens is closest to the second side among the second lens group.

Dependencies are inferred from the claim text.

Facts

Application: 16/009,651Filed 15 Jun 2018
Priority: TW 107108010 A9 Mar 2018
Published: US 2019/0278055 A112 Sep 2019
Granted: 24 Nov 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G02B 9/62
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -: having six…
G02B 9/64
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -: having more…
G02B 13/18
Optical objectives specially designed for the purposes specified below: with lenses having one or more non-spherical faces, e.g. for reducing…
G02B 5/005
Optical elements other than lenses: diaphragms

Family

US 2019/0278055 A1Pre-grant publication · published 12 Sep 2019
US 10,845,571 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key