Objective lens system for use in electronic endoscope, has positive rear lens group provided with positive lens unit, negative lens unit and biconvex positive lens unit, which are arranged in order viewed from object
摘要
<p>The system has a filter group (30) provided in the form of coplanar plates and arranged directly before an image surface of a solid body-imaging device. A positive rear lens group (20) is provided with positive and negative lens units and a biconvex positive lens unit, which are arranged in the order viewed from an object. A negative front lens group (10) is provided with an individual lens unit or several non-cemented lens units.</p>
