Aspherical Lens

Material:
Optical Glass, Germanium

Asphericity(@50.0mm Dia):
Up to 5mm

Roughness(RMS):
2.0nm~0.5nm

Surface Figure(RMS@633nm):
0.05um

Wedge(TIR):
>0.002mm

Size:
Dia. 10~25mm

Surface Quality:
60/40~10/5

Surface Figure(PV@633nm):
λ/2

Slope Error@0.5mm Spacing:
0.01°

Coating:
Antireflection Coating

Aspheric lens has better radius of curvature and can maintain good aberration correction to obtain the desired performance.

wdt_ID Attribute Value
1 Material Optical Glass, Germanium
39 Size 10-25mm
40 Asphericity(@50.0mm Dia) Up to 5mm
43 Surface Quality 60/40~10/5
44 Roughness(RMS) 2.0nm~0.5nm
45 Surface Figure(PV@633nm) λ/2
46 Surface Figure(RMS@633nm) 0.05um
47 Slope Error@0.5mm spacing Slope Error@0.5mm spacing
48 0.01° 0.01°
49 Wedge(TIR) >0.002mm
50 Coating Antireflection coating

Related Resource for reference

  • Reduce Aberration
  • Fewer Elements
  • Better Performance
Video source link: https://www.youtube.com/watch?v=xRINL8Gdp3I
The surface of the aspherical lens is “not spherical.” Its curvature is slightly changed in the radial direction, and if you look at a cross-section of the lens, you’ll find some depression in the lens rim. This shape enables light passing through the lens to converge onto one point, thereby producing a sharp, clear image.
Video source link: https://www.youtube.com/watch?v=Oc6FD0u6Ezw

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