Double-Convex Lenses are used in image relay applications, or for imaging objects at close conjugates. Double-Convex Lenses have positive focal lengths, along with two convex surfaces with equal radii. Aberrations will increase as the conjugate ratios increase. DCX Lenses are used in a range of industries or applications.
Optical AR Coatings
a) Uncoated,The surface reflectivity of uncoated visible lenses(Refractive index=1.5) is about 4%.
Click on the link to see how to calculate reflectivity
b) AR/AR@400-700nm,Tavg>99.4%
c) AR/AR@450-650nm,Tavg>99.6%
d) AR/AR@400-1000nm,Tavg>98.5%
e) We can also customize high damage threshold antireflective coatings
Material | Optical glass |
AR Coating Range | 400-700nm or customized |
Reflectance over AR Coating Range @ 0° AOI | Ravg<0.5% |
Diameter Tolerance | +0.0/-0.1 mm |
Thickness Tolerance | ±0.1 mm |
Focal Length Tolerance | ±2% |
Surface Quality | 40/20 Scratch-Dig |
Surface Flatness (Plano Side) | λ/2 at 633nm |
Spherical Surface Powerc (Convex Side) | 1.5λ at 633nm |
Surface Irregularity (Peak to Valley) | λ/2 at 633nm |
Centration | <3 arcmin |
Clear Aperture | >Ø10.16 mm (Ø1/2" Lenses) >Ø20.32 mm (Ø1" Lenses) |
Design Wavelength | 546nm |