| 摘要 |
A diffuse reflecting and specularly transmitting optical shutter structure comprises an optically rough layer of an optically thin optical shutter, and two additional layers disposed on either side of the optical shutter. These two additional layers have refractive indices which approximately match. The surfaces of these two additional layers adjacent to the optical shutter conform to the optically rough surfaces of the optical shutter and the non-adjacent surfaces to the optical shutter of these two additional layers are optically smooth.
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