| 摘要 |
The device consists of at least one light source (1), a mask (2) comprising a number of opaque elements and transparent elements, and an array of wavelength filters. A controllable optical birefringent material (3) is provided between the array and the mask, and is provided with a drive unit (4). According to the set birefringent effect of the material (3), a two-dimensional or a three-dimensional illumination mode.
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