Spectral colorimetric apparatus and image forming apparatus including the same

摘要

A spectral colorimetric apparatus includes a housing which includes a side wall. An outer surface of the side wall is an adjustment surface capable of adjusting a position of a linear sensor by moving while attaching the linear sensor to the adjustment surface. The linear sensor is supported by the side wall of the housing while abutting on the adjustment surface and receives alight beam that is dispersed by a concave surface reflection type diffraction element and passes through an opening portion. The adjustment surface is parallel to a tangential line at a part of a Rowland circle of the concave surface reflection type diffraction element, through which a light beam received by the linear sensor passes.

主权项

1. A spectral colorimetric apparatus comprising:
a concave surface reflection type diffraction element configured to disperse an incident light beam; a sensor including a plurality of photoelectric conversion elements; and a support member that supports the plurality of photoelectric conversion elements, wherein the plurality of photoelectric conversion elements is arranged in a direction parallel to a tangential line of a Rowland circle of the concave surface reflection type diffraction element and each configured to receive the light beam dispersed by the concave surface reflection type diffraction element; a housing configured to support the concave surface reflection type diffraction element and the sensor; and a bonding portion provided on the housing, wherein the support member is fixed to the housing with an adhesive provided between the bonding portion and the support member, wherein the bonding portion is provided only at a position corresponding to a center of the plurality of photoelectric conversion elements of the sensor in the direction in which the plurality of photoelectric conversion elements is arranged.