

UV Focusing Lens - Photoelectron Spectroscopy
Focusing lenses for UV and VUV photoelectron spectroscopy applications. All standard and custom lenses enable angle-resolved photoelectron spectroscopy (ARPES) experiments with < 5 μm angular resolution.

Introduction
Focusing lenses for UV and VUV photoelectron spectroscopy applications. All standard and custom lenses enable angle-resolved photoelectron spectroscopy (ARPES) experiments with < 5 μm angular resolution.

Specifications
| Lens material | Fused Silica | CaF2 |
|---|---|---|
| Lens coating | AR | AR |
| Wavelength | 190-210nm | 177nm |
| Incident electron beam diameter | 1.7mm | 1.7mm |
| Focal length | 250mm@190nm 310mm@210nm | 320mm@177nm |
| Length | ~145mm | ~250mm |
| Luminous flux | 91%@190nm | 93%@177nm |
| Focusing performance | <5μm | ~5μm |

About Top Unistar
As a leading service and solution provider in the EUV-X-ray field, Top Unistar has built up a certain scale ofinventory of EUV and X-ray related equipment and core components, enabling rapid delivery to better serve our users. Meanwhile, we have established a well-equippedX-ray open laboratory, furnished with multiple advanced X-ray light source systems, optical components, and detectors, supporting diverse testing, pre-research, and validation efforts including X-ray imaging, phase-contrast imaging, diffraction analysis, fluorescence detection, and X-ray source performance characterization.
We are a team passionate about extreme ultraviolet and X-ray technologies. If you have any questions you wish to discuss with us, do not hesitate to contact us directly.

