| DIAMETER SIZE | Smallest 3 mm |
| DIAMETER TOLERANCE | +0.0, -0.05mm |
| PARALLEL FOCAL LENGTH TOLERANCE | ±2% |
| CENTRATION | 5 arc minutes |
| SURFACE FIGURE: IRREGULARITY(N) | <0.5 |
| SURFACE QUALITY | 40-20 |
| Coating | Single layer MgF2 broadband AR |
Achromatic lenses are normally made of BK7, fused silica and CaF2.
Special focusing systems can be designed by tonchina’s engineer team.
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Sizes from smallest diameter of 3mm to biggest of over 100mm are all available.
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Normal Achromatic Lens
| LENSES | MATERIALS | ILLUSTRATION | PROPERTIES AND APPLICATIONS |
| ACHROMATIC LENS | Combinations of Two Optical Grade Glasses | | These lenses have considerably reduced values of srical aberrations. Best used to replace single components where performance must be improved. |
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Super Small Achromatic Lens
Super small Achromatic Lenses for your specific application provide exnt wavefront quality, super small spot size and improved modulation transfer function (MTF).
Feature
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Specifications
| DIAMETER SIZE | smallest 3 mm |
| DIAMETER TOLERANCE | +0.0, -0.05mm |
| PARALLEL  FOCAL  LENGTH  TOLERANCE | ±2% |
| CENTRATION | 5 arc minutes |
| CLEAR APERTURE | >80% |
| SURFACE FIGURE: POWER(N) | <3 |
| SURFACE FIGURE: IRREGULARITY(N) | <0.5 |
| SURFACE QUALITY | 40/20 scratch and dig |
| BEVEL | < 0.2 mm x 45° |
| COATING | Single layer MgF2 broadband AR |
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