| Customization: | Available |
|---|---|
| Usage: | Lighting, Medical, Optical, Photography, Astronomy |
| Type: | Achromatic |
|
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| Description | |
| Material: | Schott N-BK7 |
| Schott N-SF5 | |
| Diameter: | 40.000+0.000/-0.025mm |
| Center thickness: | 12.50+/-0.20mm |
| EFL: | 160.00mm+/-1%@587.6nm |
| BFL: | [email protected] |
| R1: | 98.66mm,CX |
| R2=R3: | 70.73mm,Doublet |
| R4: | 205.72mm,CX |
| Flatness: | S1&S2&S3&S4:PWR:[email protected] |
| S1&S2&S3&S4:IRR:[email protected] | |
| Surface quality: | S1&S2&S3&S4:40-20 |
| All other surfaces:fine ground | |
| Centerness: | <1arcmin |
| Clear aperture: | S1&S2&S3&S4:>D39.00mm |
| Chamfer: | protected |
| Coating: | S1&S4:Single layer MgF2@550nm,Ravg<1.75%@400-700nm,AOI:0deg |
| S2&S3:uncoated | |
| Standard: | MIL-PRF-13830B |
| Control items | Inspection instrument/method |
| Diameter: | Mitutoyo vernier caliper |
| Thickness: | Mitutoyo micrometer |
| Flatness: | ZYGO interferometer |
| Surface quality: | Naked eye test& 15W LED cold light |
| Centerness: | TRIOPTICS centration measurement or CPG customized instrument |
| Chamfer: | Magnifier X10& naked eye test |
| Coating: | Agilent Cary 7000 |
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