Wide-angle objective

Claim 1

A wide-angle objective composed of six components separated from each other by air spaces and located three at the object side of a diaphragm and three at the image side of such diaphragm, said six lens components taken in consecutive order from the side of the object comprising: a. a first lens component composed of at least one dispersing meniscus lens member curved towards the object side; b. a second lens component which follows a larger air space composed of a meniscus lens component curved towards the object side; c. a third lens component which follows an air space which is greater than 0.005 F and smaller than 0.17 F, said third lens component possessing a collecting refractive index and having a strongly convex curved outer surface facing the object side having a radius of curvature lying in a range between 0.26 and 0.95 F, and further having a concave cemented surface facing the object side which at the side of the object possesses a greater refractive index than at the image side and has a radius of curvature lying in a range between 0.30 and 0.72 F; d. a fourth lens component which follows the diaphragm space, said fourth lens component having a collecting refractive index and a strongly convex curved outer surface which faces the image and possessing a radius of curvature between 0.24 and 1.05 F and further possesses a concave cemented surface facing the image and which at the side of the image exhibits a greater refractive index than at the side of the object and has a radius of curvature which is in the range between 0.28 and 0.60 F; e. a fifth lens component which follows an air space which is greater than 0.00 and smaller than 0.25 F, said fifth lens component comprising a meniscus lens component which is curved towards the image and assembled from at least one dispersing and collecting lens; f. a sixth lens component which follows a larger air space and composed of at least one dispersing meniscus lens member curved towards the image; g. the spacing of both outer surfaces of said cemented third and fourth collecting lens components which face away from the diaphragm being in a range between 0.35 and 0.90 F; h. the radius of curvature of said convex surface of said third lens component being in a range amounting to one to three times the axial thickness of said third lens component; i. the radius of curvature of said convex surface of the fourth lens component being in a range between one to three times the axial thickness of said fourth lens component; and j. the outside radius of the objective at the side of the image being less than the outside radius at the side of the object.