| 摘要 |
An inspection device (10) is disclosed that employs a switchable holographic optical element (SHOE) (28). In one embodiment, the inspection device, or a portion thereof, may include a tube (24) extending between first and second ends, a SHOE (28), and a conductor (38) coupled to the SHOE. The SHOE is switchable between active and inactive states. When in the active state, the SHOE diffracts a bandwidth light incident thereon. When in the inactive state, the SHOE transmits a bandwidth light incident thereon without substantial alteration. The conductor, a portion of which is contained within the tube between the first and second ends thereof, transmits control signals or voltages to the SHOE.
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