| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To achieve endoscopic surveillance with an optical fiber in an image with a high depth of field by newly designing a microlens using an aspherical single lens. <P>SOLUTION: The optical fiber is fixed in a back-focus position of the aspherical single lens having an outer diameter of about 0.5 mm. Thus, in a single lens, an observation with a high depth of field can be achieved within a total view angle of 70 to 80°and in a working distance from about 2.5 mm to infinity. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
