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KL14-003-006 K9 Double Concave Lens
Diameter: 3mm; Focal length:- 6.3mm
Product details
summary
Material: Fine annealed K9 optical glass
Design wavelength: 587.6nm
Diameter error:+ 0.0/-0.1mm
Center thickness error: ± 0.2mm
Irregular surface shape: wavelength/4 @ 632.8nm
Focal length error (EFL): ± 2%
Lens centering error: 3 points
Surface smoothness: 3-4 levels
Inverted edge: 0.2mmX45 °
Coating: see coating list
Specifications
| Back focus BFL (mm) | -6.62 |
|---|---|
| Diameter Dia (mm) | 3 |
| Center thickness CT (mm) | 1 |
| R1=-R2（mm） | -6.67 |
| Focal length EFL (mm) | -6.3 |
| drawing |
|
| Edge thickness ET (mm) | 1.34 |
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