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Product details
summary
Material: Fine annealed K9 optical glass
Design wavelength: 587.6nm
Diameter error:+/- 0.005mm
Ellipticity: ± 0.003mm
Irregular surface shape: wavelength/4 @ 632.8nm
Surface smoothness: 3-4 levels
Coating: None
Specifications
| Diameter Dia (mm) | 3 |
|---|---|
| Back focus BFL (mm) | 0.7 |
| Focal length EFL (mm) | 2.2 |
| drawing |
|
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