Method of manufacturing image sensor unit
AssigneeNippon Sheet Glass Co., Ltd.
InventorsShuya OGI, Eiichi NAKAOKA
Life of this patent
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Abstract
There is provided a method of manufacturing an image sensor unit, the image sensor unit including: a linear light source that illuminates a document along a main scanning direction; a rod lens array that includes a plurality of rod lenses arranged in the main scanning direction and condenses a light reflected from the document; and a linear image sensor that receives a light condensed by the rod lens array. When a rod lens having an optically discontinuous portion on a surface and/or interior of the rod lens is included, the rod lens array is arranged such that the optically discontinuous portion is not located toward the document.
Claims7
A method of manufacturing an image sensor unit,
- the image sensor unit comprising:
- a linear light source that illuminates a document placed on an original platen glass along a main scanning direction;
- an erecting equal-magnification lens array that includes a plurality of single lenses arranged in the main scanning direction and condenses a light reflected from the document;
- and
- a linear image sensor that receives a light condensed by the erecting equal-magnification lens array, wherein
- when the single lenses constituting the erecting equal-magnification lens array include a single lens having an optically discontinuous portion on at least one of an incident face, a emission face and an interior of the single lens, the erecting equal magnification lens array is arranged such that an interface of the optically discontinuous portion, extending from an end face of the single lens facing the document toward the linear image sensor and in a direction away from a direction in which illuminating light from the linear light source is incident on the original platen glass, is not located toward the document.
Dependencies are inferred from the claim text.