| 摘要 |
FIELD: optical instrumentation. SUBSTANCE: invention may be used in various optical systems, projection systems, in particular. Condenser includes three identical plano-convex lenses. First lens faces object with plane, third lens faces image with plane, second lens faces object with plane. EFFECT: high image quality obtained with use of small number of lenses, high adaptability of given condenser to manufacture. 1 dwg |
