Bandpass filter and camera device

Abstract

The objective of this invention is to reduce the increased positioning burden during installation of bandpass filters with curved shapes. The bandpass filter of this invention includes: a curved light-transmitting portion; a spectral transmittance control layer disposed on the light-transmitting portion; and a support portion extending from the light-transmitting portion to support it. The light-transmitting portion can be configured with a curvature corresponding to the CRA (Chief Ray Angle) of the sensor surface through which light passing through the light-transmitting portion is incident. The support portion may include a flat surface surrounding the light-transmitting portion. Alignment marks may be included on the support portion.

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