# US 12,181,339 B2 · Spectral module and method for manufacturing spectral module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,181,339 B2 - Document ID: US12181339B2 - Status: Granted - Kind: B2 - Application number: 17/901,384 - Filed: 2022-09-01 - Published: 2022-12-29 - Granted: 2024-12-31 - Earliest claimed: 2018-07-06 - Assignees: Hamamatsu Photonics K.K. - Applicants: Hamamatsu Photonics K.K. - Inventors: Takafumi Yokino; Katsuhiko Kato - Web page: https://patentgrep.com/patent/US12181339B2 ## CPC - G01J 3/2803: {using photoelectric array detector} - G01J 3/0208: {using focussing or collimating elements, e.g. lenses or mirrors; performing aberration correction} - G01J 3/021: {using plane or convex mirrors, parallel phase plates, or particular reflectors} - G01J 3/0256: {Compact construction} - G01J 3/0262: {Constructional arrangements for removing stray light} - G01J 3/0264: {Electrical interface; User interface} - G01J 3/0291: {Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements} - G01J 3/18: using diffraction elements, e.g. grating (gratings per se G02B) - H05K 1/118: {specially for flexible printed circuits, e.g. using folded portions} - H05K 3/4007: {Surface contacts, e.g. bumps (H05K3/4092 takes precedence; deposition of finish layers on pads H05K3/24; forming solder bumps H05K3/3465)} - H05K 3/00: Apparatus or processes for manufacturing printed circuits - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A spectroscopic module includes a support body having a bottom wall portion and a side wall portion surrounding a space on one side of the bottom wall portion, a spectroscopic portion provided on the one side of the bottom wall portion and having a plurality of grating grooves, a photodetector attached to the side wall portion so as to face the spectroscopic portion via the space and having a plurality of photodetection channels, a plurality of first terminals provided on a surface of the support body on a side opposite to the space so as to be disposed along the surface of the support body and electrically connected to the photodetector, and a wiring unit having a plurality of second terminals respectively facing the plurality of first terminals and respectively joined to the plurality of first terminals and a plurality of third terminals respectively and electrically connected to the plurality of second terminals. ## Claims ### Claim 1 A spectroscopic module comprising: a support body having a bottom wall portion and a side wall portion surrounding a space on one side of the bottom wall portion; a spectroscopic portion provided on the one side of the bottom wall portion and having a plurality of grating grooves; a photodetector attached to the side wall portion so as to face the spectroscopic portion via the space and having a plurality of photodetection channels; a plurality of first terminals provided on a surface of the support body on a side opposite to the space so as to be disposed along the surface of the support body and electrically connected to the photodetector; and a wiring unit having a plurality of second terminals respectively facing the plurality of first terminals and respectively joined to the plurality of first terminals, and a plurality of third terminals respectively and electrically connected to the plurality of second terminals, wherein the wiring unit is configured by a flexible wiring substrate. ### Claim 2 (depends on 1) The spectroscopic module according to claim 1, wherein the plurality of first terminals are provided on a flat region having a largest area among a plurality of flat regions, the plurality of flat regions constituting the surface of the support body. ### Claim 3 (depends on 1) The spectroscopic module according to claim 1, wherein the plurality of first terminals are provided on a surface of the side wall portion on the side opposite to the space as the surface of the support body. ### Claim 4 (depends on 3) The spectroscopic module according to claim 3, wherein the spectroscopic portion and the photodetector face each other in a first direction, the plurality of grating grooves are arranged in a second direction perpendicular to the first direction, and the plurality of first terminals are provided on a region of the surface of the side wall portion, the region extending in the second direction as a longitudinal direction. ### Claim 5 (depends on 1) The spectroscopic module according to claim 1, wherein a first terminal and a second terminal facing each other in the plurality of first terminals and the plurality of second terminals are joined to each other via a joining member. ### Claim 6 (depends on 5) The spectroscopic module according to claim 5, wherein the joining member is a solder layer. ### Claim 7 (depends on 5) The spectroscopic module according to claim 5, wherein the joining member holds a gap formed between the support body and the wiring unit. ### Claim 8 (depends on 1) The spectroscopic module according to claim 1, wherein each of the plurality of first terminals is a circular electrode pad. ### Claim 9 (depends on 1) The spectroscopic module according to claim 1, wherein each of the plurality of second terminals is a circular electrode pad. ### Claim 10 (depends on 1) The spectroscopic module according to claim 1, wherein the plurality of third terminals are configured as a connector. ### Claim 11 (depends on 1) The spectroscopic module according to claim 1, wherein the wiring unit further has a plurality of wirings respectively connecting the plurality of second terminals and the plurality of third terminals, and a support substrate, and a bending strength of the support substrate is smaller than a bending strength of the support body. ### Claim 12 (depends on 1) The spectroscopic module according to claim 1, further comprising a rigid wiring substrate to which the plurality of third terminals are connected. ### Claim 13 (depends on 1) A method for manufacturing the spectroscopic module according to claim 1, comprising: a first step of preparing a spectroscope including the support body, the spectroscopic portion, the photodetector, and the plurality of first terminals; a second step of preparing the wiring unit and providing a joining member for each of the plurality of second terminals by heat treatment; and a third step of joining a first terminal and a second terminal to each other via the joining member by heat treatment after the first step and the second step, the first terminal and the second terminal facing each other in the plurality of first terminals and the plurality of second terminals. ### Claim 14 (depends on 13) The method for the manufacturing spectroscopic module according to claim 13, wherein a plurality of the wiring units connected to each other are prepared in the second step; and the plurality of wiring units to which the spectroscope is attached are separated from each other after the third step. ### Claim 15 A spectroscopic module comprising: a support body having a bottom wall portion and a side wall portion surrounding a space on one side of the bottom wall portion; a spectroscopic portion provided on the one side of the bottom wall portion and having a plurality of grating grooves; a photodetector attached to the side wall portion so as to face the spectroscopic portion via the space and having a plurality of photodetection channels; a plurality of first terminals provided on a surface of the support body on a side opposite to the space so as to be disposed along the surface of the support body and electrically connected to the photodetector; and a wiring unit having a plurality of second terminals respectively facing the plurality of first terminals and respectively joined to the plurality of first terminals, and a plurality of third terminals respectively and electrically connected to the plurality of second terminals, wherein the wiring unit further has a plurality of wirings respectively connecting the plurality of second terminals and the plurality of third terminals, and a support substrate, and a bending strength of the support substrate is smaller than a bending strength of the support body. ### Claim 16 (depends on 15) The spectroscopic module according to claim 15, wherein the plurality of first terminals are provided on a flat region having a largest area among a plurality of flat regions, the plurality of flat regions constituting the surface of the support body. ### Claim 17 (depends on 15) The spectroscopic module according to claim 15, wherein the plurality of first terminals are provided on a surface of the side wall portion on the side opposite to the space as the surface of the support body. ### Claim 18 (depends on 17) The spectroscopic module according to claim 17, wherein the spectroscopic portion and the photodetector face each other in a first direction, the plurality of grating grooves are arranged in a second direction perpendicular to the first direction, and the plurality of first terminals are provided on a region of the surface of the side wall portion, the region extending in the second direction as a longitudinal direction. ### Claim 19 (depends on 15) The spectroscopic module according to claim 15, wherein a first terminal and a second terminal facing each other in the plurality of first terminals and the plurality of second terminals are joined to each other via a joining member. ### Claim 20 (depends on 19) The spectroscopic module according to claim 19, wherein the joining member is a solder layer. ### Claim 21 (depends on 19) The spectroscopic module according to claim 19, wherein the joining member holds a gap formed between the support body and the wiring unit. ### Claim 22 (depends on 15) The spectroscopic module according to claim 15, wherein each of the plurality of first terminals is a circular electrode pad. ### Claim 23 (depends on 15) The spectroscopic module according to claim 15, wherein each of the plurality of second terminals is a circular electrode pad. ### Claim 24 (depends on 15) The spectroscopic module according to claim 15, wherein the plurality of third terminals are configured as a connector. ### Claim 25 (depends on 15) The spectroscopic module according to claim 15, further comprising a rigid wiring substrate to which the plurality of third terminals are connected. ### Claim 26 (depends on 16) A method for manufacturing the spectroscopic module according to claim 16, comprising: a first step of preparing a spectroscope including the support body, the spectroscopic portion, the photodetector, and the plurality of first terminals; a second step of preparing the wiring unit and providing a joining member for each of the plurality of second terminals by heat treatment; and a third step of joining a first terminal and a second terminal to each other via the joining member by heat treatment after the first step and the second step, the first terminal and the second terminal facing each other in the plurality of first terminals and the plurality of second terminals. ### Claim 27 (depends on 26) The method for the manufacturing spectroscopic module according to claim 26, wherein a plurality of the wiring units connected to each other are prepared in the second step; and the plurality of wiring units to which the spectroscope is attached are separated from each other after the third step.