Optical module

• US 20030152340A1
• Filed: 01/15/2003
• Published: 08/14/2003
• Est. Priority Date: 01/15/2002
• Status: Active Grant

• Current Assignee: Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Original Assignee: Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Inventors: Kurashima, Hiromi
• Granted Patent: US 6,807,021 B2
• Time in Patent Office: Days
• US Class Current: 385/92
• CPC Class Codes: G02B 6/4201 Packages, e.g. shape, construction, internal or external details
• CPC Class Codes: G02B 6/4245 Mounting of the opto-electronic elements
• CPC Class Codes: G02B 6/4246 Bidirectionally operating package structures
• CPC Class Codes: G02B 6/4256 Details of housings
• CPC Class Codes: G02B 6/4277 Protection against electromagnetic interference [EMI], e.g. shielding means shielding of electric apparatus H05K9/00, of instruments G12B17/00
• CPC Class Codes: G02B 6/4284 of optical modules with disconnectable electrical connectors latching arms for electrical connectors H01R13/627
• CPC Class Codes: G02B 6/4292 the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements

Abstract

An optical module of the present invention includes a housing containing a light receiving unit which is an optical subassembly, a notch is provided in a conductive bracket which covers lead pins of the light receiving unit, and a cylindrical stem portion of the light receiving unit having the maximum outer diameter juts out beyond a flat portion of the bracket and is thus exposed. Thus, the optical module has a configuration capable of containing the light receiving unit in the housing without interfering with the housing.

Claims

1. An optical module comprising an optical unit including a metallic package having a cylindrical stem, a light emitting or receiving device contained in said metal package, a cylindrical sleeve located in a light input/output terminal, and a lead pin extended on the side opposite to the sleeve and connected to said device, a board having an electronic circuit connected to the lead pin, an electrically conductive bracket which covers the lead pin, and a housing which contains the optical unit and the board covered with the bracket, wherein an optical axis of said device aligns in line with the center axes of said cylindrical stem and sleeve, and

wherein the bracket is disposed so that a part of said stem is exposed and an outer wall surface of said bracket which exposes the part of said stem is located inside a circumferential wall surface of said stem and close to the center axis of said stem in a diameter direction.

2. The optical module according to claim 1, wherein said bracket has a flat surface on the outer wall surface at the portion which exposes said stem.

3. The optical module according to claim 1, wherein said housing includes a metallic cover which covers a portion extending from said board to said optical unit through said bracket.

4. The optical module according to claim 1, wherein said board has a signal input/output terminal and a power terminal for an external apparatus, which are located on the side opposite to the side to which said optical unit is disposed.

5. The optical module according to claim 1, comprising a plurality of optical units.

6. The optical module according to claim 5, said optical units include a light emitting unit having a light emitting device, and a light receiving unit having a light receiving device.