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US 2015/0131173 A1Published application
Lens unit, image reading device, and image forming apparatus
AssigneeRicoh Company, Ltd.
InventorsAtsushi SUGAI, Tsuyoshi FUJIMOTO
Life of this patent
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Abstract
A lens unit includes a tube lens; a single lens arranged at a downstream side with respect to the tube lens in an optical incidence direction; and a supporting member that supports the tube lens and the single lens. Reflection light from a document is condensed on an image sensor by the tube lens and the single lens to form an image. An end surface part, not facing the tube lens, of the single lens is in direct contact with the supporting member.
Claims6
A lens unit comprising:
- a tube lens;
- a single lens arranged at a downstream side with respect to the tube lens in an optical incidence direction;
- and
- a supporting member that supports the tube lens and the single lens, wherein
- reflection light from a document is condensed on an image sensor by the tube lens and the single lens to form an image, and
- an end surface part, not facing the tube lens, of the single lens is in direct contact with the supporting member.
3 more elements
Dependencies are inferred from the claim text.