PROJECTION LENS OF GAUSS TYPE Russian patent published in 2009 - IPC G02B9/42 G02B11/26 

FIELD: physics; optics.

SUBSTANCE: lens may be used in visual telescopic systems, microscopes. Lens consists of four components, the first of which is convexo-convex lens, and its smaller convex faces the image. The second component is diverging meniscus glued from convexo-convex lens and concavo-concave lens, and its concavity faces the image. The third component is diverging meniscus glued from concavo-concave lens and convexo-convex lens faced with is concavity to the object. The fourth component is convexo-convex lens, and its smaller convex to the object. Lens is symmetrical in relation to the middle of air gap between the third and fourth components. Ratios related to refraction indices and coefficients of lens material dispersion and given in invention formula are maintained.

EFFECT: higher manufacturability and quality of image.

2 cl, 4 dwg