Illustration
LSC37-040-090-A
Visible-Band Negative Achromatic Lens, 40.00 mm Diameter, -90.00 mm EFL — LSC37-040-090-A
Visible-band negative achromatic lens with signed negative focal length.
$98 USD
International shipping is quoted separately.
Standard preparation: 3–7 business days.
Special products require a confirmed lead time.
Technical Specifications
- Diameter (mm)
- 40.00
- Effective focal length (mm)
- -90.00
- Center thickness (mm)
- 8.00
- Coating
- Average reflectance below 0.5% (350–700 nm)
- Optical material
- BK7/N-SF5
- Diameter tolerance
- +0.0/-0.1 mm
- Center thickness tolerance
- ±0.2 mm
- Surface irregularity
- λ/4 @632.8 nm
- EFL tolerance
- ±2%
- Centration
- 3–5 arcmin
- Surface quality
- 60/40
- Bevel
- 0.2 mm × 45°
- Edge thickness (mm)
- 13.37
- Back focal length (mm)
- -92.84