| 摘要 |
In a scanning imaging device, the exposure periods of respective image sensors are controlled to be variable (e.g. see Figure 4) such that different colours or frequency bands may be integrated over variable time periods by corresponding image sensors in an array. By suitable movement of the scanning head 500 and control by a exposure controller 520, scanning is performed such that, at the midpoint of an exposure time period (e.g. point 440 in Figure 4), light from a point 560 in the scene is incident on the centre or midpoint of the respective image detector or photosensor 511, 512, 513. Separation of light into different colours may be by means of beam splitting lens 515 or, as shown in Figure 5B, the beamsplitter may be omitted, requiring colour filters.
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