| 摘要 |
PCT No. PCT/DE96/00708 Sec. 371 Date Dec. 19, 1996 Sec. 102(e) Date Dec. 19, 1996 PCT Filed Apr. 24, 1996 PCT Pub. No. WO96/35211 PCT Pub. Date Nov. 7, 1996A light beam deflection unit for deflecting a light beam has a carrier seated in rotatable fashion around an optical axis, a reflector arranged at the rotatable carrier, and a reflection face oriented transversely relative to the optical axis. The carrier is connected to a sleeve that laterally surrounds the reflector at least in certain regions, and that rotates with the carrier. The sleeve has a light entry aperture for the incident light beam at an end face facing away from the reflector, and a light exit aperture for the deflected light beam in the generated surface. An achromatic lens that is displaceable in the direction of the optical axis for the purpose of focussing the light beam and that is held by the sleeve is located in the light entry aperture. A wedge-shaped, transparent insert is arranged in the light exit aperture for astigmatism correction.
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