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Catalog No. Dia.(mm) EFL(mm) BFL(mm) CT(mm) ET(mm) Lens A Lens B
GL31-003-004 3.15 4 2.5 2.9 1.81 BaF5 SF11
GL31-004-005 4 5 3.122 3.63 2.66 BaF5 SF11
GL31-004-006 4 6.3 4.789 3.59 2.78 BaK2 SF15
GL31-006-008 6.3 8 5.002 5.8 4.3 BaF5 SF11
GL31-006-010 6.3 10 7.578 5.69 4.41 BaK2 SF15
GL31-006-012 6.3 12.5 10.481 4.44 3.47 BaK2 SF15
GL31-006-016 6.3 16 14.172 4 3.26 BaK2 SF15
GL31-006-025 6.3 25 23.4 3.63 3.15 BK7 SF12
GL31-006-040 6.3 40 38.565 3.31 3.01 BK7 SF12
GL31-010-016 10 16 12.688 6.08 4.36 BaF5 SF11
GL31-010-020 10 20 17.223 6.37 4.86 BaK2 SF15
GL31-010-025 10 25 22.909 4.54 3.37 BaK2 SF15
GL31-010-040 10 40 38.061 4.29 3.54 BK7 SF12
GL31-010-063 10 63 61.263 4.02 3.55 BK7 SF12
GL31-016-025 16 25 19.826 9.5 6.66 BaF5 SF11
GL31-016-032 16 31.5 27.821 7.71 5.28 BaK2 SF15
GL31-016-040 16 40 36.651 7.29 5.41 BaK2 SF15
GL31-016-050 16 50 47.37 5.6 4.12 BaK2 SF15
GL31-016-063 16 63 60.467 5.26 4.04 BK7 SF12
GL31-016-100 16 100 97.531 5.32 4.55 BK7 SF12
GL31-025-040 25 40 34.026 10.47 6.25 BaF5 SF11
GL31-025-050 25 50 45.108 10.3 6.61 BaK2 SF15
GL31-025-063 25 63 58.645 9.21 6.32 BaK2 SF15
GL31-025-080 25 80 76.296 7.7 5.44 BaK2 SF15
GL31-025-100 25 100 96.752 6.98 5.18 BaK2 SF15
GL31-025-125 25 125 122.294 5.74 4.31 BaK2 SF15
GL31-025-160 25 160 157.529 4.9 3.74 BK7 SF12
GL31-025-200 25 200 197.143 5.66 4.73 BK7 SF12
GL31-025-250 25 250 247.771 4.22 3.48 BK7 SF12
GL31-025-315 25 315 312.327 5.01 4.42 BK7 SF12
GL31-025-400 25 400 397.31 4.8 4.34 BK7 SF12
GL31-025-500 25 500 497.05 4.64 4.27 BK7 SF12
GL31-040-063 40 63 53.506 16.5 9.63 BaF5 SF11
GL31-040-100 40 100 94.191 11.84 7.19 BaK2 SF15
GL31-040-160 40 160 155.512 9.24 6.37 BaK2 SF15
GL31-040-250 40 250 246.129 7.64 5.73 BK7 SF12
GL31-050-100 50 100 91.968 15.89 8.57 BaK2 SF15
GL31-050-160 50 160 151.924 12.37 7.86 BaK2 SF15
GL31-050-250 50 250 245.227 9.56 6.7 BaK2 SF15
GL31-050-400 50 400 395.551 8.56 6.7 BK7 SF2
GL31-050-630 50 630 626.463 6.3 5.12 BK7 SF12
GL31-060-200 60 200 192.202 15.47 10.28 BaK2 SF15
GL31-060-300 60 300 295.377 8.5 4.93 BK7 SF2