レンズ（光学ガラス）- 両凹レンズ
| 許容誤差 | ||
| 許容誤差 | 直径 φ | +0 、 -0.1 |
| 中心圧 tc | ±0.2 | |
| 焦点距離 | ±2% | |
| 偏芯 | 3分以内 （3'） | |
| 屈折率 Nd | 1.523（クラウン系） | |
| 1.51680（BK-7） | ||
| 表面品質 | MIL60-40 | |
| 設計波長 | 587.6nm | |
| コート | なし | |
| 品 番 |
外 径 |
焦点距離 |
バックフォーカス B.F.L |
中心厚 tc |
コバ厚 te |
材 質 Material |
税抜価格 Price |
| LT-0257S | φ5 | -5 |
-5.32 | 1.00 | 2.13 | クラウン | 2,250 |
| LT-0258S | φ5 | -5 | -5.32 | 1.00 | 2.19 | BK-7 | 2,610 |
| LT-0258S1 | φ5 | -7.5 | -7.82 | 1.00 | 1.78 | BK-7 | 2,610 |
| LT-0258S2 | φ5 | -10 | -10.33 | 1.00 | 1.56 | BK-7 | 2,610 |
| LT-0258S3 | φ5 | -12.5 | -12.83 | 1.00 | 1.46 | BK-7 | 2,610 |
| LT-0258S4 | φ5 | -15 | -15.35 | 1.00 | 1.37 | BK-7 | 2,610 |
| LT-0258S5 | φ5 | -20 | -20.38 | 1.00 | 1.29 | BK-7 | 2,610 |
| LT-0258S6 | φ5 | -30 | -30.35 | 1.00 | 1.19 | BK-7 | 2,610 |
| LT-0258S7 | φ5 | -40 | -40.34 | 1.00 | 1.14 | BK-7 | 2,610 |
| LT-0258S8 | φ5 | -50 | -50.37 | 1.00 | 1.12 | BK-7 | 2,610 |
| LT-0258S9 | φ10 | -10 | -10.33 | 1.00 | 3.42 | BK-7 | 2,880 |
| LT-0258S10 | φ10 | -15 | -51.35 | 1.00 | 2.51 | BK-7 | 2,880 |
| LT-0258S11 | φ10 | -20 | -20.38 | 1.00 | 2.19 | BK-7 | 2,880 |
| LT-0258S12 | φ10 | -25 | -25.31 | 1.00 | 1.93 | BK-7 | 2,700 |
| LT-0258S13 | φ10 | -30 | -30.35 | 1.00 | 1.79 | BK-7 | 2,700 |
| LT-0258S14 | φ10 | -40 | -40.34 | 1.00 | 1.59 | BK-7 | 2,700 |
| LT-0258S15 | φ10 | -50 | -50.37 | 1.00 | 1.47 | BK-7 | 2,700 |
| LT-0258S16 | φ10 | -60 | -60.65 | 2.00 | 2.39 | BK-7 | 2,700 |
| LT-0258S17 | φ10 | -70 | -70.66 | 2.00 | 2.34 | BK-7 | 2,700 |
| LT-0258S18 | φ10 | -80 | -80.66 | 2.00 | 2.30 | BK-7 | 2,700 |
| LT-0258S19 | φ10 | -90 | -90.66 | 2.00 | 2.26 | BK-7 | 2,700 |
| LT-0258S20 | φ10 | -100 | -100.65 | 2.00 | 2.24 | BK-7 | 2,700 |
| LT-0258S32 | φ20 | -20 | -20.33 | 1.00 | 5.88 | BK-7 | 3,150 |
| LT-0258S33 | φ20 | -30 | -30.32 | 1.00 | 4.16 | BK-7 | 3,150 |
| LT-0258S34 | φ20 | -40 | -40.34 | 1.00 | 3.34 | BK-7 | 2,700 |
| LT-0258S35 | φ20 | -50 | -50.33 | 1.00 | 2.87 | BK-7 | 2,700 |
| LT-0258S36 | φ20 | -60 | -60.65 | 2.00 | 3.55 | BK-7 | 2,700 |
| LT-0258S37 | φ20 | -70 | -70.66 | 2.00 | 3.33 | BK-7 | 2,700 |
| LT-0258S38 | φ20 | -80 | -80.66 | 2.00 | 3.18 | BK-7 | 2,700 |
| LT-0258S39 | φ20 | -90 | -90.66 | 2.00 | 3.05 | BK-7 | 2,700 |
| LT-0258S40 | φ20 | -100 | -100.65 | 2.00 | 2.95 | BK-7 | 2,700 |
| LT-0258S41 | φ30 | -30 | -30.65 | 2.00 | 9.54 | BK-7 | 3,960 |
| LT-0258S42 | φ30 | -40 | -40.65 | 2.00 | 7.51 | BK-7 | 3,960 |
| LT-0258S43 | φ30 | -50 | -50.65 | 2.00 | 6.36 | BK-7 | 3,600 |
| LT-0258S44 | φ30 | -60 | -60.65 | 2.00 | 5.61 | BK-7 | 3,600 |
| LT-0258S45 | φ30 | -70 | -70.66 | 2.00 | 5.09 | BK-7 | 3,600 |
| LT-0258S46 | φ30 | -80 | -80.66 | 2.00 | 4.70 | BK-7 | 3,600 |
| LT-0258S47 | φ30 | -90 | -90.66 | 2.00 | 4.39 | BK-7 | 3,600 |
| LT-0258S48 | φ30 | -100 | -100.65 | 2.00 | 4.15 | BK-7 | 3,600 |
