SPACE MIRROR-LENS TELESCOPE Russian patent published in 2000 - IPC

FIELD: optical instrumentation engineering. SUBSTANCE: telescope has lens incorporating mirror components that is main and auxiliary mirrors and focal-distance converter that projects intermediate image onto surfaces of photosensitive optical converters; focal-distance converter has spherical or planar mirror and lens component installed in front of the latter and provided with collecting lens. Component used to deflect telescope optical axis is mounted between rear side of main mirror and focal-distance converter mirror. In addition, according to Clause 2, collecting lens may be assembled of positive meniscus whose convex side faces secondary mirror and positive lens whose focal power is greater than that of meniscus; lens component has first meniscus lens whose concave side faces auxiliary mirror; spherical mirror is, essentially, reflecting layer applied to its convex surface. According to Clause 3, lens component is provided with second meniscus lens mounted along optical beam in front of first meniscus lens so that it faces the latter with its concave side; power of both satisfies condition ϕ₂< 0,02ϕ₁, where ϕ₁ is power of first meniscus and ϕ₂ is that of second meniscus. EFFECT: simplified design, reduced size, high angular field and spatial resolution. 3 cl, 4 dwg