# US 11,307,390 B2 · Optical lens > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,307,390 B2 - Document ID: US11307390B2 - Status: Granted - Kind: B2 - Application number: 16/228,155 - Filed: 2018-12-20 - Published: 2019-07-04 - Granted: 2022-04-19 - Earliest claimed: 2017-12-29 - Assignees: Rays Optics Inc. - Applicants: Rays Optics Inc. - Inventors: Sheng-Tang Lai; Kuo-Chuan Wang; Yuan-Hung Su - Web page: https://patentgrep.com/patent/US11307390B2 ## CPC - G02B 13/008: {designed for infrared light} - G02B 9/60: having five components only - G02B 13/0045: {having five or more lenses} - G02B 13/146: {with corrections for use in multiple wavelength bands, such as infrared and visible light, e.g. FLIR systems} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An optical lens includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens arranged in order from a magnified side to a minified side. A sum of refractive powers of the first lens and the second lens is negative, and a sum of refractive powers of the third lens, the fourth lens and the fifth lens is positive. The first lens is a glass lens with a negative refractive power, the second lens is a plastic lens, and the third lens, the fourth lens and the fifth lens are composed of one glass lens with an Abbe number of larger than 60 and two plastic lenses. ## Claims ### Claim 1 An optical lens, comprising: a first lens, a second lens, a third lens, a fourth lens and a fifth lens arranged in order from a magnified side to a minified side, a sum of refractive powers of the first lens and the second lens being negative, a sum of refractive powers of the third lens, the fourth lens and the fifth lens being positive, the first lens being a glass lens with a negative refractive power, the second lens being a plastic lens, the third lens, the fourth lens and the fifth lens being composed of one glass lens and two plastic lenses, and a full field of view of the optical lens being greater than 120 degrees, wherein the second lens has a magnified-side concave surface and a minified-side convex surface, the fifth lens has a magnified-side convex surface and a minified-side convex surface, and the minified-side convex surface of the fifth lens is not provided with any inflection point. ### Claim 2 (depends on 1) The optical lens as claimed in claim 1, wherein a total track length of the optical lens is smaller than 20 mm. ### Claim 3 (depends on 1) The optical lens as claimed in claim 1, wherein a displacement between a focal point of the optical lens measured at 85° C. and a focal point of the optical lens measured at −40° C. is less than 10 μm. ### Claim 4 (depends on 1) The optical lens as claimed in claim 1, wherein an F-number of the optical lens is larger than 1.8. ### Claim 5 (depends on 1) The optical lens as claimed in claim 1, wherein 555 nm visible light passes the optical lens to form a first focal plane, the first focal plane crosses an optical axis of the optical lens to form a first intersection, 850 nm infrared light passes the optical lens to form a second focal plane, the second focal plane crosses the optical axis of the optical lens to form a second intersection, and a displacement between the first intersection and the second intersection is smaller than 10 μm. ### Claim 6 (depends on 1) The optical lens as claimed in claim 1, wherein respective refractive powers of the first lens to the fifth lens are negative, positive, positive, negative and positive. ### Claim 7 (depends on 1) The optical lens as claimed in claim 1, wherein the second lens, the fourth lens and the fifth lens are aspheric lenses. ### Claim 8 (depends on 1) The optical lens as claimed in claim 1, wherein the optical lens has three plastic lenses and does not have any cemented lens. ### Claim 9 (depends on 1) The optical lens as claimed in claim 1, wherein respective shapes of the first lens to the fifth lens are meniscus, meniscus, biconvex, meniscus and biconvex. ### Claim 10 (depends on 1) The optical lens as claimed in claim 1, wherein a total number of lenses in the optical lens is no more than seven. ### Claim 11 (depends on 1) The optical lens as claimed in claim 1 wherein the glass lens being one of the third lens, the fourth lens and the fifth lens has an Abbe number of larger than 60. ### Claim 12 (depends on 1) The optical lens as claimed in claim 1 wherein the glass lens being one of the third lens, the fourth lens and the fifth lens has an Abbe number of larger than 70. ### Claim 13 (depends on 1) The optical lens as claimed in claim 1 wherein the glass lens being one of the third lens, the fourth lens and the fifth lens has an Abbe number of larger than 80. ### Claim 14 (depends on 1) The optical lens as claimed in claim 1 wherein a full field of view of the optical lens is equal to or smaller than 155.4 degrees. ### Claim 15 (depends on 1) The optical lens as claimed in claim 1, wherein the optical lens satisfies the conditions: SD1/R1<0.45 and 0.5