Image reading device, housing of carriage and carriage

摘要

A development device includes an imaging lens and light shielding walls. The imaging lens includes a body part having a constant diameter and both end parts arranged at both ends in an optical axial direction having diameters larger than the body part to capture a reflected light from a document onto an imaging part. The light shielding walls has a space with an interval larger than the diameter of the body part and smaller than the diameters of the both end parts, allowing the body part of the imaging lens to be arranged in the space, and shielding a light in the optical axial direction.

主权项

1. An image reading device comprising:
an imaging lens including a body part having a constant diameter and both end parts arranged at both ends in an optical axial direction having diameters larger than the body part to capture a reflected light from a document onto an imaging part; and light shielding walls arranged at a predetermined interval, the predetermined interval being larger than the diameter of the body part and smaller than the diameters of the both end parts, so that the body part of the imaging lens is arranged in the predetermined interval, and the light shielding walls shielding a light in the optical axial direction, wherein only the both end parts of the imaging lens are supported by a reception part formed in a concave shape continuing over the optical axial direction, the reception part has a protruded part in parallel to the optical axial direction, and the imaging lens comes into contact with only the protruded part when being arranged to the reception part.