UV Fused Silica Aspheric Lenses, D=25.00mm, F=20.00mm, Uncoated, United Optical Technology Co., Ltd (CAT#: STEM-OP-1343-YJL)

UV Fused Silica Aspheric Lenses, D=25.00mm, F=20.00mm, Uncoated, model 140656, is manufactured by United Optical Technology Co., Ltd.
UV fused silica aspheric lenses (Aspheric Lenses UV) are based on an aspheric element and processed using advanced grinding and polishing equipment. UV Fused Silica Aspherical Lenses feature a high numerical aperture (NA) of 0.65 for optimal light gathering and focusing performance, making them ideal for high-efficiency lighting applications or for collimating broad spectrum light sources, LEDs or similar sources. UV fused silica also provides high transmittance in the ultraviolet band and a low thermal expansion coefficient, so it is very suitable for ultraviolet to near-infrared applications.

Diameter: 25.00mm
EFL: 20.00mm
Coating: Uncoated
Material: UV-Grade Fused Silica JGS2
BFL: 9.90mm
Collimation (Aspheric Side): φ22.86mm
Focusing (Plano Side): φ17.4mm
NA: 0.65
CT: 14.90mm
ET: 3.60mm
Design Wavelength: 405nm
Diameter Tolerance: +0/-0.05mm
Center Thickness Tolerance: ±0.1mm
Surface Accuracy: λ/4@632.8nm
Focal Length Tolerance: ±1%
Asphere Figure Error: RMS 0.75μm
Centering Tolerance: ＜3′
Surface Quality: 40/20

The surface of an aspherical lens is optimized to use a more complex outer surface, and the curvature gradually changes from the center of the lens to the outside of the lens edge to reduce spherical aberration. When focusing the collimated beam, it should be incident on the aspherical side of the lens, and when collimating the light emitted by the point source, it should be incident on the lens plane to achieve minimal spherical aberration.
It is processed using advanced grinding and polishing equipment to provide optimal light gathering power and focusing performance.

UV Fused Silica Aspheric Lenses, D=50.00mm, F=40.00mm, Uncoated, United Optical Technology Co., Ltd (CAT#: STEM-OP-1344-YJL)
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UV Fused Silica Aspheric Lenses, D=25.00mm, F=20.00mm, AR@250-400nm, United Optical Technology Co., Ltd (CAT#: STEM-OP-1346-YJL)
UV Fused Silica Aspheric Lenses, D=50.00mm, F=40.00mm, AR@250-400nm, United Optical Technology Co., Ltd (CAT#: STEM-OP-1347-YJL)
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