Drum Lenses, D=3.00mm, F=3.18mm, UV UV Fused Silica, United Optical Technology Co., Ltd (CAT#: STEM-OP-2694-YJL)

Drum Lenses, D=3.00mm, F=3.18mm, UV UV Fused Silica, model 165027, is manufactured by United Optical Technology Co., Ltd.
A drum lens has a shorter focal length and greater magnification than an ordinary convex lens. Its focal length depends on the refractive index of the material itself. UV fused silica glass material has a wider spectral range (185nm-2.1μm) than K9 optical glass, and has excellent transmittance in the ultraviolet band. It has a lower refractive index, better uniformity, and a smaller thermal expansion coefficient. It also has higher chemical resistance and very low fluorescence, and can be used to make various optical components.

Diameter: 3.00mm
EFL: 3.18mm
Coating: AR@250~400nm
Material: UV-Grade Fused Silica
BFL: 1.18mm
Center Thickness CT: 4.00mm
Design Wavelength: 587.6nm
Diameter Tolerance: +0.0/-0.05mm
Center Thickness Tolerance: ±0.005mm
Surface Accuracy: λ/4@632.8nm
Surface Quality: 40/20-60/40
n: n=1.45850

UV Fused Silica Drum Lenses are lenses with spherical ends that provide positioning surfaces along the optical axis. It is formed by grinding the outer circle on the basis of a ball lens for the convenience of card installation. It is more suitable for the propagation of light in optical communications.

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