| 摘要 |
1. An optical system of collimator eight comprises a meniscus lens, its convex side faces towards the target being viewed, one of said target surfaces reflects aiming mark radiation, characterized in that the optical system comprises positive lens located between the meniscus element and the aid aiming mark, said mark is moved off optical axis of meniscus element, the positive lens focal distance f meets the requirement: /0.4fM/ < f < /0.6fM/, where fM is focal distance of meniscus element, d' is the distance between the meniscus element and the positive lens meets the requirement 0.7d < d' < 0.9d, where d is a distance between the meniscus element and the aiming mark. 2. The collimator sight optical system of claim 1, characterized in that the positive lens is a flat-convex lens, its convex side faces towards the meniscus element.
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