Name: 25mm Dia 0.69 NA, Uncoated, UV Fused Silica Aspheric Lens
Brand: TECHSPEC
SKU: 33-949
Price: €500,00

Diameter (mm):

25.00 +0.0/-0.1

Effective Focal Length EFL (mm):

17.50 @ 587.6nm

Numerical Aperture NA:

0.69

Back Focal Length BFL (mm):

8.37

Fused Silica (Corning 7980)

Aspheric Design Wavelength (nm):

587.6

Coating:

Uncoated

Centering (arcmin):

≤5

Surface Quality:

60-40

Clear Aperture CA (mm):

22.5

Edge Thickness ET (mm):

2.85

Center Thickness CT (mm):

14.80 ±0.1

f/#:

0.7

Bevel:

Protective bevel as needed

Radius R₂ (mm):

38.177

Shape of Back Surface:

Convex

Wavelength Range (nm):

200 - 2200

Conjugate Distance:

Infinite

Asphere Figure Error, RMS @ 632.8nm:

1.2λ

Regulatory Compliance

RoHS 2015:

Compliant

Reach 219:

Compliant

Certificate of Conformance:

View

Product Family Description

Low Coefficient of Thermal Expansion
Precision and High Precision Options
High Numerical Apertures to Maximize Throughput

TECHSPEC® UV Fused Silica Aspheric Lenses offer the benefits of an aspheric element combined with the manufacturing precision of state-of-the-art grinding and polishing equipment. With the available prescription data, these fused silica optics can be easily designed and integrated into complex optical systems. Featuring low f/#’s for optimum light gathering and focusing performance, these fused silica lenses are computer optimized to eliminate spherical and minimize higher order aberrations. UV fused silica optics substrate offers a low coefficient of thermal expansion.

UV FS Transmission Curve

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