| 摘要 |
An optical receiver module 1 includes : a sleeve that holds an optical fiber; an optical flat surface provided in the sleeve and into which light emitted from the optical fiber enters; a lens provided in the sleeve that converges and emits the light that has entered the optical flat surface; and a light-receiving element that receives the light emitted from the lens and converts optical Signals to electrical signals. The optical flat surface is formed such as to be tilted by 20° to 40° or 60° to 70° in relation to a light-receiving surface of the light-receiving element.
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