# US 11,112,571 B2 · Optical subassembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,112,571 B2 - Document ID: US11112571B2 - Status: Granted - Kind: B2 - Application number: 16/559,198 - Filed: 2019-09-03 - Published: 2021-02-18 - Granted: 2021-09-07 - Earliest claimed: 2019-08-13 - Assignees: Lumentum Japan, Inc. - Applicants: Lumentum Japan, Inc. - Inventors: Yuji Sekino; Akira Nakanishi; Takayuki Nakajima - Web page: https://patentgrep.com/patent/US11112571B2 ## CPC - G02B 6/4215: {the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers (G02B6/4246 takes precedence)} - G02B 6/4257: {having a supporting carrier or a mounting substrate or a mounting plate (G02B6/3648 takes precedence)} - G02B 6/4206: {Optical features (G02B6/4207, G02B6/421 take precedence)} - G02B 6/29367: {Zigzag path within a transparent optical block, e.g. filter deposited on an etalon, glass plate, wedge acting as a stable spacer} - G02B 6/4244: {Mounting of the optical elements} - G02B 6/4245: {Mounting of the opto-electronic elements} - G02B 6/4246: {Bidirectionally operating package structures} - G02B 6/4249: {comprising arrays of active devices and fibres} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An optical subassembly may include a plurality of optical semiconductor devices arrayed such that a plurality of light beams respectively traveling in parallel in a first direction are emitted therefrom or incident thereon. The optical subassembly may also include a carrier on which the plurality of optical semiconductor devices are mounted. Adjacent ones of the plurality of optical semiconductor devices may be located at positions shifted in a second direction orthogonal to the first direction and may be shifted in the first direction so as not to face each other in the second direction. ## Claims ### Claim 1 An optical subassembly comprising: a plurality of optical semiconductor devices arrayed such that a plurality of light beams respectively traveling in parallel in a first direction are emitted therefrom or incident thereon; and a carrier on which the plurality of optical semiconductor devices are mounted, wherein adjacent ones of the plurality of optical semiconductor devices are located at positions shifted in a second direction orthogonal to the first direction and also shifted in the first direction so as not to face each other in the second direction, wherein each of the plurality of optical semiconductor devices comprises a respective upper electrode, and wherein a portion of each respective upper electrode is a wide pad electrode. ### Claim 2 (depends on 1) The optical subassembly according to claim 1, wherein the plurality of optical semiconductor devices are arrayed in a staggered manner in the second direction. ### Claim 3 (depends on 1) The optical subassembly according to claim 1, wherein respective edge portions of the adjacent ones of the plurality of optical semiconductor devices are located at positions facing each other in the first direction. ### Claim 4 (depends on 1) The optical subassembly according to claim 1, wherein the plurality of optical semiconductor devices include first optical semiconductor devices arranged in a line in a front row in the second direction and second optical semiconductor devices arranged in a line in a back row in the second direction, and the adjacent ones of the plurality of optical semiconductor devices are configured of a corresponding one of the first optical semiconductor devices and a corresponding one of the second optical semiconductor devices. ### Claim 5 (depends on 1) The optical subassembly according to claim 1, further comprising: a plurality of lenses that respectively correspond to the plurality of optical semiconductor devices and through which the plurality of light beams respectively pass, wherein adjacent ones of the plurality of lenses are located at positions shifted in the first direction. ### Claim 6 (depends on 5) The optical subassembly according to claim 5, wherein the plurality of lenses are located at positions spaced by equal distances from the plurality of optical semiconductor devices respectively corresponding thereto. ### Claim 7 (depends on 5) The optical subassembly according to claim 5, wherein a distance by which the adjacent ones of the plurality of optical semiconductor devices are shifted in the first direction and a distance by which the adjacent ones of the plurality of lenses are shifted in the first direction are equal. ### Claim 8 An optical subassembly comprising: a plurality of optical semiconductor devices arrayed such that a plurality of light beams respectively traveling in parallel in a first direction are emitted therefrom or incident thereon; and a carrier on which the plurality of optical semiconductor devices are mounted, wherein adjacent ones of the plurality of optical semiconductor devices are located at positions not overlapping as viewed in a second direction orthogonal to the first direction, wherein each of the plurality of optical semiconductor devices comprises a respective upper electrode, and wherein a portion of each respective upper electrode is a wide pad electrode. ### Claim 9 (depends on 8) The optical subassembly according to claim 8, wherein each of the adjacent ones of the plurality of optical semiconductor devices is located at a position overlapping another one of the plurality of optical semiconductor devices as viewed in the second direction. ### Claim 10 (depends on 8) The optical subassembly according to claim 8, wherein the plurality of optical semiconductor devices is arrayed in a staggered manner in the second direction. ### Claim 11 (depends on 8) The optical subassembly according to claim 8, wherein respective edge portions of the adjacent ones of the plurality of optical semiconductor devices are located at positions facing each other in the first direction. ### Claim 12 (depends on 8) The optical subassembly according to claim 8, wherein the plurality of optical semiconductor devices include first optical semiconductor devices arranged in a line in a front row in the second direction and second optical semiconductor devices arranged in a line in a back row in the second direction, and the adjacent ones of the plurality of optical semiconductor devices are configured of a corresponding one of the first optical semiconductor devices and a corresponding one of the second optical semiconductor devices. ### Claim 13 (depends on 8) The optical subassembly according to claim 8, further comprising: a plurality of lenses that respectively correspond to the plurality of optical semiconductor devices and through which the plurality of light beams respectively pass, wherein adjacent ones of the plurality of lenses are located at positions shifted in the first direction. ### Claim 14 (depends on 13) The optical subassembly according to claim 13, wherein the plurality of lenses are located at positions spaced by equal distances from the plurality of optical semiconductor devices respectively corresponding thereto. ### Claim 15 (depends on 13) The optical subassembly according to claim 13, wherein a distance by which the adjacent ones of the plurality of optical semiconductor devices are shifted in the first direction and a distance by which the adjacent ones of the plurality of lenses are shifted in the first direction are equal. ### Claim 16 An optical transceiver comprising: a printed board; a plurality of flexible boards; and an optical subassembly connected to the printed board via the plurality of flexible boards, the optical subassembly comprising: a plurality of optical semiconductor devices arrayed such that a plurality of light beams respectively traveling in parallel in a first direction are emitted therefrom or incident thereon; and a carrier on which the plurality of optical semiconductor devices are mounted, wherein adjacent ones of the plurality of optical semiconductor devices are located at positions shifted in a second direction orthogonal to the first direction and also shifted in the first direction so as not to face each other in the second direction, wherein each of the plurality of optical semiconductor devices comprises a respective upper electrode, and wherein a portion of each respective upper electrode is a wide pad electrode. ### Claim 17 (depends on 16) The optical transceiver according to claim 16, wherein the plurality of optical semiconductor devices are arrayed in a staggered manner in the second direction. ### Claim 18 (depends on 16) The optical transceiver according to claim 16, wherein respective edge portions of the adjacent ones of the plurality of optical semiconductor devices are located at positions facing each other in the first direction. ### Claim 19 (depends on 16) The optical transceiver according to claim 16, wherein the plurality of optical semiconductor devices include first optical semiconductor devices arranged in a line in a front row in the second direction and second optical semiconductor devices arranged in a line in a back row in the second direction, and the adjacent ones of the plurality of optical semiconductor devices are configured of a corresponding one of the first optical semiconductor devices and a corresponding one of the second optical semiconductor devices. ### Claim 20 (depends on 16) The optical transceiver according to claim 16, further comprising: a plurality of lenses that respectively correspond to the plurality of optical semiconductor devices and through which the plurality of light beams respectively pass, wherein adjacent ones of the plurality of lenses are located at positions shifted in the first direction.