# US 2017/0285335 A1 · Cold weather camera kit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0285335 A1 - Document ID: US20170285335A1 - Status: Published application - Kind: A1 - Application number: 15/468,596 - Filed: 2017-03-24 - Published: 2017-10-05 - Earliest claimed: 2016-04-01 - Assignees: FLIR Systems, Inc. - Applicants: Flir Systems, Inc. - Inventors: Kai Moncino; John H. Distelzweig; Norman A. Hannotte - Web page: https://patentgrep.com/patent/US20170285335A1 ## CPC - G02B 27/0006: {with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation (G02B1/18 takes precedence; cleaning in general B08B)} - G02B 7/028: {with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation} - G02B 27/00: Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 - G03B 17/55: with provision for heating or cooling, e.g. in aircraft - 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) ## Abstract Various embodiments of the present disclosure may include an imaging system that includes a de-icing assembly. The de-icing assembly may include a de-icing window and a window frame. The de-icing window may be constructed from Float Zone Silicon, single crystal sapphire, and/or germanium. The de-icing assembly may be coupled to a lens barrel of a camera. Heat generated by a heater element of the camera may be conducted via the housing and the lens barrel of the camera to the de-icing assembly. The heated de-icing assembly may prevent the formation of ice on the de-icing window by conducting heat to the de-icing window. ## Claims ### Claim 1 An apparatus comprising: a lens barrel; a camera lens disposed within the lens barrel; a de-icing assembly comprising a window frame and a de-icing window coupled to the window frame, wherein the window frame is coupled to the lens barrel and the de-icing window is thermally conductively coupled to the lens barrel; and a heater element thermally conductively coupled to the lens barrel. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the de-icing assembly is configured to be decoupled from the lens barrel. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the window frame comprises a substantially cylindrical window body, the window body comprises a window frame threaded portion, and the lens barrel comprises a lens barrel threaded portion configured to receive the window frame threaded portion. ### Claim 4 (depends on 1) The apparatus of claim 1, further comprising a sealed volume defined, at least in part, by the lens barrel, the camera lens, and the de-icing assembly and a gasket disposed, at least in part, between the lens barrel and the de-icing assembly, wherein the gasket is configured to seal the sealed volume. ### Claim 5 (depends on 1) The apparatus of claim 1, further comprising a power source coupled to the heater element and configured to power the heater element. ### Claim 6 (depends on 5) The apparatus of claim 5, further comprising a non-transitory memory and a processor, wherein the processor is configured to read instructions from the non-transitory memory to perform operations comprising: detect a temperature of the de-icing window and/or an environment around the de-icing window; determine whether the temperature is below a threshold temperature; and provide, responsive to determining that the temperature is below a threshold temperature, instructions to power the heater element with the power source. ### Claim 7 (depends on 6) The apparatus of claim 6, further comprising an environmental temperature sensor configured to detect a temperature of the environment and provide temperature data to the processor, wherein the processor is configured to, at least in part, detect the temperature of the environment from the temperature data. ### Claim 8 (depends on 6) The apparatus of claim 6, further comprising a window temperature sensor configured to detect a temperature of the de-icing window and provide temperature data to the processor, wherein the processor is configured to, at least in part, detect the temperature of the de-icing window from the temperature data. ### Claim 9 (depends on 5) The apparatus of claim 5, further comprising a non-transitory memory and a processor, wherein the processor is configured to read instructions from the non-transitory memory to perform operations comprising: detect formation of ice on the de-icing window; and provide, responsive to detecting formation of ice, instructions to power the heater element with the power source. ### Claim 10 (depends on 9) The apparatus of claim 9, further comprising an ice detection sensor configured to detect formation of ice on the de-icing window and provide, responsive to detecting formation of ice, data to the processor indicating formation of ice on the de-icing window, wherein the processor is configured to, at least in part, detect formation of the ice from the data. ### Claim 11 (depends on 1) The apparatus of claim 1, wherein the heater element is coupled to an interior of the lens barrel. ### Claim 12 (depends on 1) The apparatus of claim 1, wherein the camera lens comprises a first material and the de-icing window comprises a second material different from the first material. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein the second material is float zone silicon, sapphire, and/or germanium and the first material is Chalcogenide. ### Claim 14 (depends on 1) The apparatus of claim 1, further comprising an imager configured to receive image data of at least a scene and output image data associated with the scene, wherein the imager is configured to receive image data in an infrared wavelength. ### Claim 15 An apparatus comprising: a window frame comprising a substantially cylindrical window body, wherein the window body comprises a first end and a second end and at least the second end is configured to be coupled to a lens barrel; and a de-icing window at least partially disposed within the window frame, wherein the de-icing window is configured to be thermally conductively coupled to the lens barrel when the window frame is coupled to the lens barrel. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein at least the second end of the window body comprises a threaded portion configured to be threaded onto a portion of the lens barrel. ### Claim 17 (depends on 15) The apparatus of claim 15, wherein the de-icing window comprises a first material and the window frame comprises a second material. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the first material is float zone silicon, sapphire, and/or germanium. ### Claim 19 (depends on 17) The apparatus of claim 17, wherein the second material is a plastic and/or a metal. ### Claim 20 (depends on 15) A method of installing the apparatus of claim 15 comprising: inserting a gasket, at least in part, within a lens barrel; thermally conductively coupling the de-icing window to the lens barrel; coupling the window frame to the de-icing window; coupling the window frame to the lens barrel; and sealing a volume with, at least, the gasket.