# US 2014/0153871 A1 · Optical coupling element and optical-electric converting module using same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153871 A1 - Document ID: US20140153871A1 - Status: Published application - Kind: A1 - Application number: 13/858,115 - Filed: 2013-04-08 - Published: 2014-06-05 - Earliest claimed: 2012-11-30 - Assignees: Hon Hai Precision Industry Co., Ltd. - Applicants: Hon Hai Precision Industry Co., Ltd. - Inventors: CHANG-WEI KUO - Web page: https://patentgrep.com/patent/US20140153871A1 ## CPC - G02B 6/42: Coupling light guides with opto-electronic elements - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An optical coupling element includes a lower surface, an upper surface, and a side surface. The lower surface defines a first cavity. The first cavity includes a bottom portion. The bottom portion forms at least two first light coupling lenses. A diameter of each first light coupling lens is equal to d1. The upper surface faces away from the lower surface, and defines a second cavity. The second cavity includes a reflecting surface. The side surface perpendicularly connects to the lower surface. The side surface forms at least two second light coupling lenses. A diameter of each second light coupling lens is equal to d2, and d1>d2. ## Claims ### Claim 1 An optical coupling element, comprising: a lower surface defining a first cavity, the first cavity comprising a bottom portion, the bottom portion forming at least two first light coupling lenses, a diameter of each of the at least two first light coupling lens being equal to d1; an upper surface facing away from the lower surface, the upper surface defining a second cavity, the second cavity comprising a reflecting surface; and a side surface perpendicularly connecting to the lower surface, the side surface forming at least two second light coupling lenses, each of the at least two second light coupling lenses optically aligning with a respective one of the at least two first light coupling lenses via the reflecting surface, a diameter of the at least two second light coupling lenses being equal to d2, wherein d1>d2. ### Claim 2 (depends on 1) The optical coupling element of claim 1, wherein the upper surface is substantially parallel with the lower surface. ### Claim 3 (depends on 1) The optical coupling element of claim 1, wherein an included angle between the upper surface and the reflecting surface is about 45 degrees, an included angle between an optical axis of each of the at least two first light coupling lenses and the reflecting surface is about 45 degrees, and an included angle between an optical axis of each of the at least two second light coupling lenses and the reflecting surface is about 45 degrees. ### Claim 4 (depends on 1) The optical coupling element of claim 1, wherein the side surface defines a receiving cavity, the receiving cavity comprises a vertical surface substantially perpendicular to the upper surface, and the at least two second light coupling lenses are formed on the vertical surface. ### Claim 5 (depends on 1) The optical coupling element of claim 1, wherein the at least two first light coupling lenses and the at least two second light coupling lenses are convex lenses and are integrally formed with the optical coupling element. ### Claim 6 An optical-electric converting module, comprising: a printed circuit board (PCB) comprising a supporting surface, at least one laser diode and at least one photo diode, the at least one laser diode and the at least one photo diode positioned on the supporting surface and electrically connected to the PCB; and an optical coupling element comprising: a lower surface defining a first cavity, the first cavity comprising a bottom portion, the bottom portion forming at least two first light coupling lenses, a diameter of each first light coupling lens being equal to d1; an upper surface facing away from the lower surface, the upper surface defining a second cavity, the second cavity comprising a reflecting surface; and a side surface perpendicularly connecting to the lower surface, the side surface forming at least two second light coupling lenses, each of the at least two second light coupling lenses optically aligning with a respective one of the at least two first light coupling lenses via the reflecting surface, the lower surface positioned on the supporting surface, with the at least one laser diode and the at least one photo diode being received in the first cavity, each of the at least two first light coupling lenses aligning with a respective one of the at least one laser diode and the least one photo diode, a diameter of each second light coupling lens being equal to d2, wherein d1>d2. ### Claim 7 (depends on 6) The optical-electric converting module of claim 6, wherein the upper surface is substantially parallel with the lower surface. ### Claim 8 (depends on 6) The optical-electric converting module of claim 6, wherein an included angle between the upper surface and the reflecting surface is about 45 degrees, an included angle between an optical axis of each first light coupling lens and the reflecting surface is about 45 degrees, and an included angle between an optical axis of each second light coupling lens and the reflecting surface is about 45 degrees. ### Claim 9 (depends on 6) The optical-electric converting module of claim 6, wherein the side surface defines a receiving cavity, the receiving cavity comprises a vertical surface substantially perpendicular to the upper surface, and the at least two second light coupling lenses are formed on the vertical surface. ### Claim 10 (depends on 6) The optical-electric converting module of claim 6, wherein the at least two first light coupling lenses and the at least two second light coupling lenses are convex lenses and are integrally formed with the optical coupling element. ### Claim 11 (depends on 6) The optical-electric converting module of claim 6, further comprising a driver chip, wherein the drive chip is received in the first cavity, the drive chip is configured to drive the at least one laser diode to emit light and configured to demodulate data in the light received by the at least one photo diode.