Wide-angle lens comprising eight components

Claim 2

A wide-angle lens comprising eight components and having a relative aperture of 1:5.6, an angular field of at least 120*, and a diaphragm space l4 0.06181, the characteristics of said lens being as follows: Focal length f 1; relative aperture 1:5.6; angular field 121*; diaphragm space l4 0.06181 Thicknesses and Refractive Abbe numbers Radii distances indices nd Nu r1 +1.29775 d1 0.06828 1.51633 64.0 r2 +0.61125 l1 0.21736 r3 +0.89057 d2 0.05678 1.51633 64.0 r4 +0.43467 l2 0.28924 r5 +0.52622 d3 0.31583 1.67786 55.5 r6 -0.63863 d4 0.01869 1.60562 43.9 r7 +0.27184 l3 0.00489 r8 +0.28280 d5 0.12722 1.55115 49.6 r9 +28.73676 l4 0.06181 diaphragm space r10 +4.87763 d6 0.12794 1.55361 51.4 r11 -0.29168 l5 0.00331 r12 -0.28280 d7 0.01869 1.61293 37.0 r13 +0.56805 d8 0.15238 1.66446 35.9 r14 -5.11339 d9 0.11788 1.67786 55.5 r15 -0.62426 l6 0.27429 r16 -0.44284 d10 0.05247 1.72825 28.3 r17 -0.70771 l7 0.20744 r18 -0.53779 d11 0.06397 1.58913 61.2 r19 0.90718

Claim 3

Wide-angle lens comprising eight components and having a relative aperture of 1:5.6, an angular field of at least 120*, and a diaphragm space l4 0.06209, the characteristics of said lens being as follows: Focal length f 1; relative aperture 1:5.6; angular field 121*; diaphragm space l4 0.06209 Thicknesses and Refractive Abbe numbers Radii distances indices nd Nu r''1 +1.40773 d1 0.06773 1.52088 60.2 r''2 +0.64601 l1 0.15506 r''3 +0.80930 d2 0.05644 1.61272 58.6 r''4 +0.44316 l2 0.30661 r''5 +0.53348 d3 0.11958 1.66680 33.1 r''6 +1.16220 d4 0.22175 1.66755 41.9 r''7 -0.58504 d5 0.01693 1.61659 36.6 r''8 +0.26232 l3 0.00815 r''9 +0.27680 d6 0.12996 1.55232 63.5 r''10 -7.50150 l4 0.06209 diaphragm space r''11 +9.08195 d7 0.13175 1.56384 60.7 r''12 -0.29219 l5 0.00264 r''13 -0.28565 d8 0.01693 1.58215 42.0 r''14 +0.57550 d9 0.13957 1.65128 38.3 r''15 +25.53558 d10 0.12504 1.64328 47.8 r''16 -0.66308 l6 0.28465 r''17 -0.43336 d11 0.05193 1.72342 38.0 r''18 -0.65051 l7 0.19993 r''19 -0.52868 d12 0.06435 1.52944 51.8 r''20 -1.08893

Claim 4

Wide-angle lens comprising eight components and having a relative aperture of 1:5.6, an angular field of at least 120*, and a diaphragm space l4 0.06209, the characteristics of said lens being as follows: Focal length f 1; relative aperture 1:5.6; angular field 121*; diaphragm space l4 0.06209 Thicknesses and Refractive Abbe numbers Radii distances indices nd Nu r''1 +1.40773 d1 0.06773 1.52088 60.2 r''2 +0.64601 l1 0.15506 r''3 +0.80930 d2 0.05644 1.61272 58.6 r''4 +0.44316 l2 0.30661 r''5 +0.53348 d3 0.11958 1.66680 33.1 r''6 +1.16220 d4 0.22175 1.66755 41.9 r''7 -0.58504 d5 0.01693 1.61659 36.6 r''8 +0.26232 l3 0.00815 r''9 +0.27680 d6 0.12996 1.55232 63.5 r''10 -7.50150 l4 0.06209 diaphragm space r''11 +9.08195 d7 0.13175 1.56384 60.7 r''12 -0.29219 l5 0.00264 r''13 -0.28565 d8 0.01693 1.58215 42.0 r''14 +0.57550 d9 0.13957 1.65128 38.3 r''15 +25.53558 d10 0.12504 1.64328 47.8 r''16 -0.66308 l6 0.28465 r''17 -0.43336 d11 0.05193 1.72342 38.0 r''18 -0.65051 l7 0.19993 r''19 -0.52868 d12 0.06435 1.52944 51.8 r''20 -1.08893