| Cat No | Type | Size(mm) | F.L(mm) |
| SL110 | Plano Convex | 50 x 50 | 175 |
| SL111 | Plano Convex | 50 x 50 | 100 |
| SL112 | Plano Convex | 50 x 50 | 150 |
| SL113 | Plano Concave | 50 x 50 | 60 |
| SL114 | Plano Concave | 50 x 50 | 150 |
| SL115 | Plano Concave | 50 x 50 | 300 |
| SL116 | Double Convex | 50 x 50 | 75 |
| SL117 | Double Convex | 50 x 50 | 150 |
| SL118 | Double Concave | 50 x 50 | 75 |
| SL119 | Double Concave | 50 x 50 | 150 |
| SL120 | Plano Convex | 50 x 45 | 75 |
| SL121 | Plano Convex | 50 x 45 | 100 |
| SL122 | Plano Convex | 50 x 45 | 150 |
| SL123 | Plano Convex | 50 x 45 | 60 |
| SL124 | Plano Convex | 50 x 45 | 150 |
| SL125 | Plano Convex | 50 x 45 | 300 |
| SL126 | Double Convex | 50 x 45 | 75 |
| SL127 | Double Convex | 50 x 45 | 150 |
| SL128 | Plano Convex | 50 x 45 | 75 |
| SL129 | Double Concave | 50 x 45 | 150 |
| SL130 | Plano Convex | 50 x 45 | 75 |
| SL131 | Plano Convex | 50 x 22 | 100 |
| SL132 | Plano Convex | 50 x 22 | 150 |
| SL133 | Plano Convex | 50 x 22 | 60 |
| SL134 | Plano Convex | 50 x 22 | 150 |
| SL135 | Plano Concave | 50 x 22 | 300 |
| SL136 | Double Convex | 50 x 22 | 75 |
| SL137 | Double Convex | 50 x 22 | 150 |
| SL138 | Double Convex | 50 x 22 | 75 |
| SL139 | Double Concave | 50 x 22 | 150 |