| 摘要 |
A polarizing plate, two phase plates having predetermined phase differences, two birefringence plates are disposed on a common optical axis, thereby effecting color separation of three color light components of R, G, and B as well as positional separation of their optical paths in a simple configuration without using color filters. A first phase plate (7) and a first birefringence plate (8) are used to separate, in terms of color and position, linearly polarized light carrying color image information into a cyan color component (CL) and a yellow color component (YL). Then, a second phase plate (9) and a second birefringence plate (10) are used to separate, in terms of color and position, the cyan color component (CL) and yellow color component (YL) into a blue color component (BL), a green color component (GL), and a red color component (RL), so as make them incident on their corresponding line sensors (11A, 11B, 11C) on a light receiving means (11).
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