Patent ID: 8395120

Claim:
A bidirectional optical scanner comprising: a first compression plate; a first optical detection module disposed over the first compression plate; the first optical detection module having at least one light source module and at least one detection module; the light source module including a plurality of light emitting elements arranged in a line; the detection module having a plurality of photosensors disposed in a line; one of the light emitting elements aligned with the corresponding photosensor to form a row; a second optical detection module arranged corresponding to the first optical detection module; the second optical detection module including at least one light source module and at least one detection module; the light source module having a plurality of light emitting elements arranged in a line and the detection module having a plurality of photosensors disposed in a line; one of the light emitting elements aligned with the corresponding photosensor to form a row; the light emitting elements of the light source module of the second optical detection module are corresponding to the photosensors of the detection module of the first optical detection module; the photosensors of the detection module of the second optical detection module are corresponding to the light emitting elements of the light source module of the first optical detection module; and a second compression plate arranged at the second optical detection module and located between the first optical detection module and the second optical detection module.