| 摘要 |
<p>Disclosed is a pattern projection light source including: a light source (2a); a plurality of mask regions (5) having light transmitting portions where the light from the light source passes are formed with a predetermined pattern; and a plurality of lenses (7) each forming an image of a predetermined pattern of the light transmitting portion at a predetermined distance. The light source (2a), the mask regions, and the lenses (7) are arranged in this order. Since the pattern projection light source includes a plurality of projection optical systems each having a mask region and a lens, it is possible to realize a small-size and thin pattern projection light source. Moreover, by arranging a plurality of lenses, it is possible to enlarge the pattern image formation range. Furthermore, it is possible to form a clear pattern image of the light transmitting portions on an object.</p> |
