Series illustration · Not to scaleLSN3-1350-D12.5
Economy Longpass Filter, 1350 nm Edge, 12.50 mm Diameter — LSN3-1350-D12.5
Economy longpass filter with the specified edge wavelength, passband and diameter. Edge wavelength is defined at T = Tavg / 2.
$53 USD
International shipping is quoted separately.
Standard preparation: 3–7 business days.
Special products require a confirmed lead time.
Technical Specifications
- Longpass edge wavelength (nm)
- 1350
- Diameter (mm)
- 12.50
- Optical material
- H-K9L optical glass
- Passband (nm)
- 1390–2000
- Blocking band (nm)
- 1055–1300
- Material grade
- Fine-annealed
- Transmitted wavefront error
- λ/4 @ 633 nm
- Parallelism
- <30 arcsec
- Surface quality
- 60/40
- Diameter tolerance (mm)
- +0.0/-0.1
- Thickness (mm)
- 2
- Thickness tolerance (mm)
- ±0.2
- Edge wavelength tolerance
- ±2%
- Average passband transmittance
- >85%
- Blocking optical density
- >2
- Transition steepness
- <3%
- Clear aperture
- >90%
- Angle of incidence (deg)
- 0
- Edge wavelength definition
- Wavelength at T = Tavg / 2
- Transition steepness definition
- (λT80 − λT10) / λT10 × 100%