| 摘要 |
FIELD: physics, optics.SUBSTANCE: invention relates to devices for electrical control of a light beam. The beam control device (300) comprises a first deflecting element (310), a turning element (320) and a second deflecting element (330). For an incoming light beam, having components (303, 302) with a polarisation respectively parallel (303') and perpendicular (302') to the optical axis (314, 334) of the beam control device, the parallel component (303) deviates by a first angle (304) when passing through the first deflecting element. When passing through the turning element, polarisation (303', 302') of the light beam turns by 90 degrees (303", 302"). When passing through the second deflecting element, the perpendicular component (302) deviates by a second angle (305).EFFECT: high reliability and small size of the device.15 cl, 10 dwg |
