| 摘要 |
The optoelectronic module ( 1 ) includes a photoreceptor circuit ( 3 ) for picking up light from a light source by reflection on an external surface. The photoreceptor circuit and the light source circuit are mounted on a substrate ( 2 ), and contact pads ( 6 ) of the circuits are electrically connected to pads of the substrate. The substrate pads are connected to conductive paths of the substrate. The flexible substrate includes a first portion ( 2 a) on which the photoreceptor circuit ( 3 ) and light source circuit are mounted and electrically connected, a second portion ( 2 b) including electrical connection terminals ( 9 ) and a connecting portion ( 2 c) between the first portion and the second portion. This connecting portion connects some conductive paths of the first portion to the connection terminals of the second portion. The connecting portion allows the height and/or spacing of the second portion to be adjusted relative to the first portion when the module is mounted, particularly in a computer mouse. A cover ( 20 ), on which a transparent lens unit ( 40 ) is mounted, is placed on the first portion. A light passage ( 24 ) is made in the cover above the photosensitive area of the photoreceptor circuit. The transparent unit, on which the cover with the first portion of the substrate is mounted, can be secured through an aperture in the bottom of a computer mouse case. The connecting terminals ( 9 ) of the second portion ( 2 b) of the flexible substrate are however connected to corresponding pads of a mother printed circuit board at a distance from the bottom of the case while adjusting the height and/or spacing of the second portion relative to the first portion via the connecting portion ( 2 c).
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