Illustration
LSC7A-040-090-M48-A
Mounted Negative Achromatic Doublet, 38 mm Clear Aperture, -90 mm EFL, M48x0.75 — LSC7A-040-090-M48-A
Mounted negative achromatic doublet with specified clear aperture and negative effective focal length.
$111 USD
International shipping is quoted separately.
Standard preparation: 3–7 business days.
Special products require a confirmed lead time.
Technical Specifications
- Clear aperture (mm)
- 38
- Effective focal length (mm)
- -90
- Coating
- Average reflectance below 0.5% (400–700 nm)
- Mount thread
- M48x0.75
- 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°
- Back focal length (mm)
- -92.84