Патент USA US2106077код для вставки
350-467 5R OR ._, ' Search Roon 2.106.0Y7 f M v‘ I V ‘ V -,/ W0??? v Jan. 18, 1938. ' ‘ ‘ A. w. TRONNIER CORRECTED OBJECTIVE Filed llay 7, 1936 [Liz Z: [M516 l7 TTT T7” I112 .22’ I ‘ 2,106,077 T2259 x ,2 a4! Search Room Patented Jan. 18, 1938 2,106,077 UNITED STATES PATENT OFFICE 2,108,077 CORRECTED OBJECTIVE Albrecht Wilhelm Tronnien. Bad Kreuznach, Germany, assignor to the corporation of Joe. Schneider & '00., Optotechnische Gmllschaft, Berlin, Germany Application May 7, 1936, Serial No. 73,451 InG ermany November 23, 1935 1Claim. (Cl. 88-57) This invention relates to a light intensity, with the dispersive component coordinated there- L ' spherically, chromatically and astigmatically cor with have a smaller positive refractive power rected objective of ?ve individual members in the than the two components on the other side of the air, three of which have positive refracting power diaphragm; each of the two collective com while the remaining two members have dispersive ponents on the object side of the diaphragm has action, are meniscus-shaped, encompass the a convex surface toward the object, the radius shutter and present hollow exterior surfaces of curvature R3 of the said convex surface of thereto. Two of the three collective members are the second component L2 from the object is adjacent each other, are disposed on the object smaller than the radius of curvature RI of the 10 side and are so constructed that the radius of corresponding convex surface of the component 10 the front surface of the second collective mem LI ?rst from the object, the ?rst-mentioned ra ber which is directed toward the object and con dius of curvature R3 being at least equal to but vex thereto, is smaller than the radius front sur not greater than 2% times as large as the radius face of the front member directed toward the ob of curvature R6 of the surface of the dispersive 15 ject which is likewise convex toward the object. component L3 coordinated with the said two 15 Only a single collective member, in the air, is juxtaposed collective components, directed to provided on the image side of the objective. ward the diaphragm. An object of the invention is to provide an ob An objective in accordance with the invention jective substantially of'the Gauss type with an is diagrammatically shown in the accompanying added freely positioned collective member and drawing in which the single ?gure is a diagram 20 which Gauss objective, as is known, formed as matic sectional view of the objective lens com a double objective, consists of only four separate prising ?ve air spaced lens groups and having members in the air, two of which have dispersive seven lens elements. The following tabular illus action, encompass the shutter, are meniscus tration corresponds to the drawing, with the shaped and have hollow outer surfaces directed condition that it is provided for a focal distance 25 toward the shutter, while the singly positioned of 100 mm., and accordingly all distances are collective members are disposed one before the given in millimeters. In the drawing, the radii front one of the two dispersive members, and the are designated by R, the thicknesses by d and other after the rear one, of the dispersive the air distances by a. The glasses of the lenses members. L are characterized by therefra'ctive index n: 30 By means of ' a further collective member dis posed in front of an objective of the Gauss type, the present invention offers, as compared'with known objectives of this kind, a particularly 85\zone-free correction over a relatively extensive image ?eld, with relatively high light intensity. The stepping down of the refractive power within the system is suitably so provided that the two front collectivemembers together with the ad jacent dispersive member have a smaller positive refractive power than the two‘ members of the objective disposed on the other side of the dia phragm. ‘ The present construction, as compared with 45 known objectives, is characterized by a light intensive, spherically, chromatically, and astig matically corrected objective comprising a dia phragm and ?ve components in contact with the air, three of which components have positive re 50 fractive power and two of which are meniscus-_ for the blue light and the Abbe number v. The axial section distance on the image side is des ignated by m, and the diaphragm is arranged in the large intermediate air space of the ob jective built up of seven lenses. 35 1°=1oo 1:1.9 p.,'=7o.45 Radii Thicknesses and distances 40 R4=+162.1 R5=+159.9 d2=6.585 2 6343 a _ ' L2 A1 r a3=2.929 R6=+24.90 3 17 09 R7=-28.56 a T ' 45 L3 m m an , agm space 50 shaped, have dispersive e?ect, encompass the diaphragm, and have hollow surfaces facing to ward the diaphragm, two of the three collecting components‘ being juxtaposed and being arranged 55 on the object side of the objective and, together 55 2, Kinds of glasses 1'. L1 II. L2 111 L3 L4 IV. L5 L6 V. L7 10 n1=1.82812 n2=1.61780 n3=l.59183 n4=1.59183 n5=1.63585 n6=1.63108 n7=1.64548 v1=60.4 v2=58.7 v3==40.6 v4=40.6 v5=36.7 v6=58.0 v7=56.2 Thus, R3 is less than RI or 2%, times R6 ‘but greater than R6 alone. What I claim is: A light-intensive, spherical, chromatically and astigmatically corrected objective of the type 15 comprising a dia hragm and ?ve components in ing arll?nzedu on the object side and have, _to gether with the dispersive component co-ordi nated therewith, a smaller positive refractive." power than the two components of the objective arranged on the other side of the diaphragm. 5 characterized in that each of the two collective components on the object side of the diaphragm has a convex surface toward the object, the radius of curvature R3 of the said convex sur face of thesecond component L2 from the ob 10 ject is smaller than the radius of curvature RI of the corresponding convex surface of the com ponent Ll ?rst from the‘ object, the ?rst-men tioned radius of curvature R3 being at least equal to but not greater than 21/4 times as large as the contact with the air, f?ree of which have positive radius of curvature R6 of the surface of the refractive power, while the remaining two are meniscus-shaped, have a dispersive e?ect, en compass the diaphragm, and have hollow outer dispersive component L3 co-ordinated with the said two juxtaposed collective components, di rected toward the diaphragm. surfaces toward the diaphragm, two of the three collecting components being juxtaposed and be is; p 20 ALBRECHT WILHELM TRONNIER.