# US 10,374,390 B2 · Beam projector module using laser > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,374,390 B2 - Document ID: US10374390B2 - Status: Granted - Kind: B2 - Application number: 16/056,904 - Filed: 2018-08-07 - Published: 2019-05-02 - Granted: 2019-08-06 - Earliest claimed: 2017-10-26 - Assignees: Namuga Co., Ltd. - Applicants: Namuga Co., Ltd. - Inventors: Jun Youb Lee; Young Gyu Kang; Jeong Hwa Seo - Web page: https://patentgrep.com/patent/US10374390B2 ## CPC - H01S 5/062: by varying the potential of the electrodes (H01S5/065 takes precedence) - H01S 5/02208: characterised by the shape of the housings - H01S 5/02257: using windows, e.g. specially adapted for back-reflecting light to a detector inside the housing - H01S 5/02325: Mechanically integrated components on mount members or optical micro-benches - H01S 5/02345: Wire-bonding - H01S: DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL ## Abstract The present disclosure provides a beam projector module including: a PCB on which a cathode wire and an anode wire are positioned; a conductive pad that is made of a conductive material or coated with a conductive material and has one side surface; a first frame that is made of a non-conductive material and has one side surface which is in contact with the PCB; a light source having a cathode electrode and an anode electrode, the cathode electrode being in contact with the other side surface of the conductive pad; the anode electrode being connected to the anode wire through at least one electric wire passing through the opening; a diffuser configured to diffuse a light beam output from the light source; and a second frame configured to support the diffuser so that the diffuser is spaced from the light source by a predetermined distance. ## Claims ### Claim 1 A beam projector module comprising: a cathode conductive pad that is made of a conductive material or coated with a conductive material and has one side surface, a part or the entirety of which is electrically connected to a cathode wire on a Printed Circuit Board (PCB) for supplying power; a light source having a cathode electrode and an anode electrode, the cathode electrode being in contact with the other side surface of the conductive pad, the anode electrode being electrically connected to an anode wire of the PCB through at least one electric wire; a diffuser configured to diffuse a light beam output from the light source; a frame surrounds the light source, and supports the diffuser so that the diffuser is spaced from the light source by a predetermined distance; and a transverse bar part that is coupled to the frame, wherein the transverse bar part is disposed between the electric wire and the PCB and cuts off the electric wire at the time of occurrence of a vibration or an external shock. ### Claim 2 (depends on 1) The beam projector module of claim 1, wherein the anode electrode is electrically connected to the anode wire of the PCB through an anode conductive pad. ### Claim 3 (depends on 2) The beam projector module of claim 2, wherein the anode conductive pad is formed on one side surface of a first substrate. ### Claim 4 (depends on 1) The beam projector module of claim 1, wherein a substrate, on which the cathode conductive pad is formed, is made of aluminum or an aluminum alloy. ### Claim 5 (depends on 1) The beam projector module of claim 1, wherein the cathode conductive pad is adhered to an inside of a region of the cathode wire through a conductive adhesive agent or a Surface Mount Technology (SMT) process, the cathode electrode of the light source is adhered to the cathode conductive pad through a conductive adhesive agent, an SMT process, or eutectic bonding, a part or the entirety of the anode wire is exposed, and the at least one electric wire is wire-bonded to the exposed part of the anode wire. ### Claim 6 A beam projector module comprising: a cathode conductive pad that is made of a conductive material or coated with a conductive material and has one side surface, a part or the entirety of which is electrically connected to a cathode wire on a Printed Circuit Board (PCB) for supplying power; a first frame that is made of a non-conductive material and disposed parallel to the PCB, an opening being formed on an anode wire of the PCB; a light source having a cathode electrode and an anode electrode, the cathode electrode being in contact with the other side surface of the cathode conductive pad, the anode electrode being electrically connected to the anode wire through at least one electric wire passing through the opening; a diffuser configured to diffuse a light beam output from the light source; and a second frame configured to support the diffuser so that the diffuser is spaced from the light source by a predetermined distance. ### Claim 7 (depends on 6) The beam projector module of claim 6, wherein the diffuser is attached to the second frame and the first frame and the second frame are integrated with each other. ### Claim 8 (depends on 6) The beam projector module of claim 6, wherein the at least one electric wire is disposed to extend across a part of the first frame. ### Claim 9 (depends on 6) The beam projector module of claim 6, wherein the cathode conductive pad is adhered to the cathode wire through a conductive epoxy or a Surface Mount Technology (SMT) process, and the at least one electric wire is connected to the anode wire by wire bonding. ### Claim 10 (depends on 6) The beam projector module of claim 6, wherein the conductive pad has an area wider than that of the cathode electrode of the light source, and the cathode wire has an area wider than that of the conductive pad. ### Claim 11 (depends on 6) The beam projector module of claim 6, wherein the light source comprises a Vertical-Cavity Surface-Emitting Laser (VCSEL). ### Claim 12 (depends on 6) The beam projector module of claim 6, further comprising: a light reception part configured to sense a reflected light beam reflected by the diffuser among light beams output from the light source; and a processor configured to block supply of power to the cathode wire or the anode wire when the intensity of the reflected light beam, measured in the light reception part, has a value lower than a reference value. ### Claim 13 (depends on 12) The beam projector module of claim 12, wherein the processor uses the reflected light beam sensed by the light reception part to periodically feed back a change in the position of the diffuser to an external device or to recognize a change in the position of the diffuser and determine whether a laser included in the light source malfunctions.