Focusing Lens Assembly D28F50-500
Aberration correction: singlets may introduce spherical and chromatic aberration, requiring aspheres, achromats, or compound lens groups. Reflective focusing optics such as parabolic mirrors avoid chromatic aberration and suit broadband applications. Focal length: determines focal position and spot size; shorter focal lengths produce smaller spots and higher energy density. Numerical aperture (NA): NA = n sinθ, where n is the medium's refractive index and θ is the focusing half-angle. A larger value provides stronger focusing. Working distance (WD): distance from the lens surface to the focus, accounting for mounting space and collision avoidance. Damage threshold: high-power laser materials must tolerate high energy density; fused silica, for example, outperforms ordinary glass.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Wavelength | 1064nm |
| Power | ≤4KW |
| Material and Coating | Fused Silica, JGS, AR Antireflection Coating on Both Sides |
Applications
Key Features
Datasheet
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