# US 10,310,291 B2 · Lens arrangement and a monitoring camera comprising the lens arrangement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,310,291 B2 - Document ID: US10310291B2 - Status: Granted - Kind: B2 - Application number: 15/353,201 - Filed: 2016-11-16 - Published: 2017-05-18 - Granted: 2019-06-04 - Earliest claimed: 2015-11-16 - Assignees: Axis AB - Applicants: Axis AB - Inventors: Mikael Adervall - Web page: https://patentgrep.com/patent/US10310291B2 ## CPC - G02B 27/646: {compensating for small deviations, e.g. due to vibration or shake (movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68)} - G02B 7/04: with mechanism for focusing or varying magnification - G03B 3/02: moving lens along baseboard - G03B 17/02: Bodies - G03B 17/12: with means for supporting objectives, supplementary lenses, filters, masks, or turrets - H04N 7/183: {for receiving images from a single remote source} - H04N 23/55: Optical parts specially adapted for electronic image sensors; Mounting thereof - H04N 23/685: {performed by mechanical compensation} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A lens arrangement for a monitoring camera and a monitoring camera including a lens arrangement is provided. The lens arrangement includes a lens member having a connection portion with an outer thread, an adjustment member having a through hole for receiving the connection portion and an inner thread corresponding to the outer thread, a holder member having a receiving portion for receiving the connection portion and an inner thread corresponding to the outer thread. The lens arrangement is assembled by the connection portion being screwed into the through hole and further into the receiving portion. The receiving portion has a top engagement surface and the adjustment member has a bottom engagement surface. The adjustment member is movable relative to the holder member by screwing between non-engaging and engaging states. In the engaging state, the bottom engagement surface wedgingly engages with the top engagement surface for locking the lens member. ## Claims ### Claim 1 A lens arrangement for a monitoring camera, the lens arrangement comprising: a lens member having a connection portion provided with an outer thread, a single-piece adjustment member having a through hole for receiving the connection portion and being provided with an inner thread corresponding to the outer thread, and a holder member having a receiving portion for receiving the connection portion and being provided with an inner thread corresponding to the outer thread, wherein the lens arrangement is assembled by the connection portion of the lens member being screwed into the through hole of the single-piece adjustment member and further into the receiving portion of the holder member, wherein the receiving portion of the holder member has a top engagement surface and the single-piece adjustment member has a bottom engagement surface, the top engagement surface and the bottom engagement surface each having flat, slanted, and planar profiles, wherein the single-piece adjustment member is movable relative the holder member by screwing between a non-engaging state and an engaging state of the lens arrangement, and in the engaging state, engagement between the single-piece adjustment member and the holder member exclusively occurs between planar contact of the bottom engagement surface of the single-piece adjustment member wedgingly engaging with the top engagement surface of the receiving portion of the holder member for locking the lens member. ### Claim 2 (depends on 1) The lens arrangement according to claim 1, wherein the receiving portion comprises a frustoconical seat forming the top engagement surface of the receiving portion of the holder member, and the single-piece adjustment member having a frustoconical protrusion forming the bottom engagement surface of the single-piece adjustment member. ### Claim 3 (depends on 1) The lens arrangement according to claim 1, wherein the single-piece adjustment member comprises a frustoconical seat forming the bottom engagement surface, and the receiving portion having a frustoconical protrusion forming the top engagement surface of the receiving portion of the holder member. ### Claim 4 (depends on 1) The lens arrangement according to claim 1, further comprising a biasing member arranged at a bottom side of the holder member, and adapted to engage the lens member in an assembled state of the lens arrangement for biasing the lens member in an axial direction thereof. ### Claim 5 (depends on 4) The lens arrangement according to claim 4, wherein the biasing member comprises an elastic gasket. ### Claim 6 (depends on 5) The lens arrangement according to claim 5, wherein the elastic gasket has a cross-section having a z-shape. ### Claim 7 (depends on 5) The lens arrangement according to claim 5, wherein the elastic gasket comprises a silicone rubber. ### Claim 8 (depends on 5) The lens arrangement according to claim 5, wherein the biasing member is arranged in contact with the lens member and the holder member for forming an environmental seal. ### Claim 9 (depends on 5) The lens arrangement according to claim 5, wherein the biasing member has an annular shape. ### Claim 10 (depends on 1) The lens arrangement according to claim 1, wherein the holder member comprises an opening at a bottom side thereof, providing a free line of sight between the lens member and an image sensor being arranged in the vicinity of the bottom side. ### Claim 11 (depends on 1) A monitoring camera comprising the lens arrangement according to claim 1. ### Claim 12 (depends on 1) The lens arrangement according to claim 1, wherein the lens member includes a lower engagement surface and the single-piece adjustment member includes an upper engagement surface, and the lower engagement surface and the upper engagement surface each have a slanted profile and are adapted to engage each other. ### Claim 13 (depends on 1) The lens arrangement according to claim 1, wherein the bottom engagement surface of the adjustment member extends to the inner thread of the through hole of the adjustment member. ### Claim 14 (depends on 1) The lens arrangement according to claim 1, wherein the top engagement surface of the holder member extends to the inner thread of the holder member.