# US 10,371,369 B2 · Sealing of optical module with O-ring and liquid resin > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,369 B2 - Document ID: US10371369B2 - Status: Granted - Kind: B2 - Application number: 14/796,890 - Filed: 2015-07-10 - Published: 2016-02-04 - Granted: 2019-08-06 - Earliest claimed: 2014-08-01 - Assignees: Hitachi-LG Data Storage, Inc. - Applicants: Hitachi-LG Data Storage, Inc. - Inventors: Yukio Sakigawa; Masayuki Okamura; Hiroaki Furuichi; Hiroshi Ogasawara; Kenji Watabe; Fumihito Ichikawa; Tatsuya Yamasaki - Web page: https://patentgrep.com/patent/US10371369B2 ## CPC - F21V 31/005: {Sealing arrangements therefor} - F21V 29/54: using thermoelectric means, e.g. Peltier elements - G03B 21/145: {Housing details, e.g. position adjustments thereof} - G03B 21/20: Lamp housings - G02B 27/01: Head-up displays - G03B 17/08: Waterproof bodies or housings - G03B 21/2033: {LED or laser light sources} - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - 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) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An optical module having a high-moisture-proof package structure in which dew condensation does not occur is provided. An optical module includes optical components including a light source, a pedestal on which the optical components are mounted, a cover which is combined to the pedestal to seal the optical components, and an emitting window disposed in the cover to take light from the light source outside. The pedestal and the cover are sealed with an O ring and a liquid seal material such that a compression direction of the O ring and a compression direction of the liquid seal material are almost perpendicular to each other. ## Claims ### Claim 1 An optical module for a video device, comprising: optical components including a light source; a pedestal on which the optical components are mounted; a cover which is combined to the pedestal to seal the optical components; and an emitting window disposed in the cover to take light from the light source outside, wherein the pedestal and the cover are sealed with a first O ring which is a loop of elastomer having a circular cross-section and a hardened seal of a first liquid seal material, wherein the first O ring is arranged at an optical components side inwardly from the first liquid seal material, and wherein a thickness of the first liquid seal material is adjustable with a screw that fixes the cover to the pedestal. ### Claim 2 (depends on 1) The optical module according to claim 1, wherein a sealing of the pedestal and the cover is performed such that a compression direction of the first O ring and a compression direction of the first liquid seal material are almost perpendicular to each other. ### Claim 3 (depends on 1) The optical module according to claim 1, wherein the pedestal includes a step to dispose the first O ring and a groove in which the first liquid seal material is applied on an outer peripheral side of the step and in which the cover is fitted. ### Claim 4 (depends on 3) The optical module according to claim 3, wherein the step has a height larger than a thickness of the first O ring. ### Claim 5 (depends on 1) The optical module according to claim 1, wherein a thickness of the first liquid seal material is adjustable by striking the pedestal to a planar portion formed on the outer peripheral portion of the cover. ### Claim 6 (depends on 1) The optical module according to claim 1, wherein the cover and the emitting window are sealed with a second O ring and a hardened seal of a second liquid seal material such that the compression direction of the second O ring and the compression direction of the second liquid seal material are almost perpendicular to each other. ### Claim 7 (depends on 6) The optical module according to claim 6, wherein the emitting window has a step to dispose the second O ring and a planar portion to cause the emitting window to adhere to the cover with the second liquid seal material. ### Claim 8 (depends on 1) The optical module according to claim 1, wherein a cooling Peltier element is attached. ### Claim 9 A method of making an optical module for a video device including optical components including a light source, a pedestal on which the optical components are mounted, a cover which is combined to the pedestal to seal the optical components, and an emitting window disposed in the cover to take light from the light source outside, the method comprising: preparing the pedestal having a step portion to dispose an O ring thereon and a groove in which a liquid seal material is applied on an outer peripheral side of the step portion to fit the cover in the groove; disposing the O ring, which is a loop of elastomer having a circular cross-section, on the step portion; applying or disposing the liquid seal material in the groove; fitting the cover in the groove to press the liquid seal material into the groove; and adjusting a thickness of the liquid seal material by adjusting a screw to fix the cover to the pedestal. ### Claim 10 (depends on 9) The method of making an optical module according to claim 9, further comprising thermally hardening the liquid seal material. ### Claim 11 (depends on 6) The optical module according to claim 6, wherein a thickness of the second liquid seal material is adjustable with a plurality of screws that fix the emitting window to the cover. ### Claim 12 (depends on 6) The optical module according to claim 6, wherein the second O ring is arranged at an optical components side inwardly from the second liquid seal material, and wherein the emitting window is fixed to the cover with a plurality of screws from an outside of the cover.