| 摘要 |
The invention is directed to a color corrected ocular having a very simple configuration and excellent correction characteristics. The ocular includes a single lens at the eye end with the single lens having an aspherical surface r2 and a two-element composite lens (2, 3). The surface r3 of the composite lens adjacent to the aspherical surface r2 is a planar surface. In another embodiment, the composite lens includes a planar-convex lens 2 and a planar-concave lens 3 which are cemented to each other at respective convex and concave surfaces. The spacing d1 between the single lens 1 and the exit pupil 4 is sufficiently large so that the ocular is also suitable for a wearer of spectacles.
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