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US 6,807,021 B2Granted
Optical module
AssigneeSumitomo Electric Industries, Ltd.
InventorHiromi Kurashima
Life of this patent
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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.
Claims6
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 from said stem to a 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 secured to said board, said bracket covering the lead pin;
- and
- a housing which contains the optical unit, said bracket and the board,
- 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.
8 more elements
Dependencies are inferred from the claim text.