| 摘要 |
PROBLEM TO BE SOLVED: To provide a fast variable angle-of-incidence emission device for an image measuring device. SOLUTION: The fast variable angle-of-incidence emission device for the image measuring device includes: a light source that directs a beam along a first optical path part; a beam steering arrangement that receives the beam and steers it along a second optical path part; and a beam deflecting arrangement including a plurality of surface parts arranged at respective angles of incidence to receive the beam and deflect it along a third optical path part to a field of view. The beam steering arrangement includes different beam steering surfaces that provide either narrow or wide divergence of the beam toward the beam deflecting arrangement. The emission device allows for fast adjustment of not only the emission angle of incidence but also the range of angles (narrow or wide) about the nominal angle. The emission device is particularly suitable for use with light provided by a high-intensity remote light source. COPYRIGHT: (C)2011,JPO&INPIT
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