The Steinheil triplets are made of a low index crown element cemented in between two identical meniscus flint elements. Specially designed for 1:1 conjugation, they perform well for conjugate ratios up to 5.
These lenses make good relay optics for both on- and off-axis application and are often used as eyepieces.
Don't see what you need? Request custom optics.
| Diameter | Dia. Tolerance | CT Tolerance | Centering | Irregularity | Surface Quality | Bevel |
| 6.00-25.00 | +0.00 / -0.10 | ±0.2 | 3-5 minutes | 0.5 Waves | 60-40 | 0.25 x 45° |
| Dimensions | MM | |||||
| Clear Aperture | CA >= 90% of Diameter | |||||
| Coating | 1/4wave MgF2 @ 550nm (See Coating Chart for Available Options) | |||||
| Design Wavelength | 587.6nm | |||||
| Focal Length Tolerance | ±2% | |||||
| Edge Thickness | Reference | |||||
| * All dimensions are in mm | ||||||
| Part Number | Diameter | EFL | BFL | CT | ET | |
|---|---|---|---|---|---|---|
| L-AST007 | 23 | 40 | 35 | 17.1 | 12.6 | Add to Quote |
| L-AST006 | 17 | 30 | 27 | 12.6 | 9.5 | Add to Quote |
| L-AST005 | 15 | 25 | 23 | 10.2 | 7.4 | Add to Quote |
| L-AST004 | 12.5 | 20 | 19 | 9 | 6.3 | Add to Quote |
| L-AST003 | 9.5 | 12.5 | 10.1 | 7 | 4.6 | Add to Quote |
| L-AST002 | 8.5 | 10 | 8.7 | 6.6 | 4.2 | Add to Quote |
| L-AST001 | 6.5 | 7.5 | 5.8 | 5.2 | 3.2 | Add to Quote |
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