
Substrate: H-K9L
Surface Flatness: λ/10@ 633 nm
Surface Quality: 10/5
Parallelism: ≤1 arcmin
Clear Aperture: >90% of Diameter

Substrate: H-K9L
Surface Flatness: λ/10@ 633 nm
Surface Quality: 10/5
Parallelism: ≤1 arcmin
Clear Aperture: >90% of Diameter
| minor axis | major axis | thickness | uncoated model | protected Aluminium model | protected Silver model | protected Gold model |
| 12.5 | 17.68 | 6 | JKM15-012 | JKM15-012-AL | JKM15-012-AG | JKM15-012-AU |
| 25 | 35.36 | 6 | JKM15-025 | JKM15-025-AL | JKM15-025-AG | JKM15-025-AU |
| 36 | 50.92 | 12.5 | JKM15-036 | JKM15-036-AL | JKM15-036-AG | JKM15-036-AU |
| 46 | 65.06 | 12.5 | JKM15-046 | JKM15-046-AL | JKM15-046-AG | JKM15-046-AU |
| 50 | 70.72 | 12.5 | JKM15-050 | JKM15-050-AL | JKM15-050-AG | JKM15-050-AU |
| 64 | 90.52 | 12.5 | JKM15-064 | JKM15-064-AL | JKM15-064-AG | JKM15-064-AU |
| 70 | 99.01 | 12.5 | JKM15-070 | JKM15-070-AL | JKM15-070-AG | JKM15-070-AU |
| 80 | 113.15 | 12.5 | JKM15-080 | JKM15-080-AL | JKM15-080-AG | JKM15-080-AU |