| 摘要 |
FIELD: physics. ^ SUBSTANCE: short-focus lens can be used together with matrix photodetectors. The lens has three lens components. The first component is a single negative meniscus whose convex side faces the object. The second component is a positive lens made from a positive meniscus glued to a biconvex lens. The third component is a positive lens made from a biconvex lens glued to a negative meniscus. The single meniscus can be made from glass having refraction index nä«85. ^ EFFECT: higher aperture ratio with good image quality. ^ 2 cl, 1 dwg, 2 tbl |
