Image sensor device

摘要

An image sensor and image sensor device include: a lighting portion extending in a main scanning direction and emitting light to the object-to-be-read; a rod lens array for imaging light from the object-to-be-read; and a light receiving portion for converting the light imaged by the rod lens array to an electric signal. The lighting portion emits a normally directed light from the normal direction of the object-to-be-read to irradiate a first irradiation region of the object-to-be-read, and an inclined light inclined by a predetermined angle from the normal direction of the object-to-be-read to irradiate a second irradiation region being apart from the first irradiation region in a sub-scanning direction.

主权项

1. An image sensor device comprising a pair of image sensors, each of the image sensors including:
a lighting portion extending in a main scanning direction and irradiating light onto an object-to-be-read; a rod lens array for imaging light from the object-to-be-read; and a light receiving portion for converting the light imaged by the rod lens array to an electric signal; wherein the lighting portion emits a normally directed light from a normal direction of the object-to-be-read, to irradiate a first irradiation region of the object-to-be-read, and an inclined light inclined by a predetermined angle from the normal direction of the object-to- be-read to irradiate a second irradiation region being apart from the first irradiation region in a sub-scanning direction; and wherein the pair of the image sensors are arranged point-symmetrically around an axis in the main scanning direction facing across the object-to-be-read, and an optical axis of reflected light that is the inclined light of one image sensor reflected on the object-to-be-read, coincides with an optical axis of transmission light, that is, the normally directed light of the other image sensor transmitted through the object-to-be-read; and the lighting portion of one image sensor irradiates light at a timing different from the irradiating of the lighting portion of the other image sensor; and the light receiving portion of the one image sensor converts the reflected light and the light receiving portion of the other image sensor converts the transmission light during irradiation of light by the lighting portion of the one image sensor.