Updated： 2013/09/28
| Illumination For Fixed Lens(visible) | High magnification fixed focus | ||||||
|---|---|---|---|---|---|---|---|
| Product name | 製品名 | LOTH-030 | LOTH-050 | LOTH-075 | LOTH-100 | LOTH-133 | LZHD-240 |
| Width of Fresnel | フレネル・幅 | 260mm | 204mm | 150mm | 130mm | 100mm | 68mm |
| Rod prism effective width | ロッド・有効幅 | 24.0mm | 20.6mm | 20.8mm | 20.8mm | 18.5mm | 16.0mm |
| Rod prism NA | ロッド・NA | 0.182 | 0.196 | 0.168 | 0.149 | 0.142 | 0.206 |
| Aperture diameter(σ=1.0) | シグマ絞り直径(σ=1.0) | 10.6mm | 11.6mm | 10.0mm | 9.0mm | 8.5mm | 11.6mm |
| Aperture to lens | シグマ絞り－フレネル | 316mm | 263mm | 205mm | 158mm | 136mm | 84mm |
| Lens to illuminated plane | フレネル－物体面（照射面） | 70mm | 82mm | 113mm | 100mm | 95mm | 68mm |
| Corresponding lens | 対応レンズ | OTH-030 | OTH-050 | OTH-075 | OTH-100 | OTH-133 | ZHD-240 |
| 使用チャート | 物体面L/P [lp/mm] | 20.00 | 33.33 | 50.00 | 50.00 | 100.00 | 166.00 |
| 像面L/P [lp/mm] | 66.67 | 66.67 | 66.67 | 50.00 | 75.19 | 69.44 | |
| Line/Cell数 [cell] | 1.50 | 1.50 | 1.50 | 2.00 | 1.33 | 1.44 | |
| MTF値実測参考例(拡散照明系[透過]) | 46% | 38% | 33% | 44% | 17% | 17% | |
| ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ||
| MTF値改善参考例(フレネル照明系[透過]) | 62% | 57% | 52% | 66% | 34% | 23% | |
