Home / Custom / Optical Components / Micro-optics / Rod Lens 
Rod Lenses are polished on the circumference and ground on both ends. Optical performance is similar to a cylinder lens. Collimated light passing through the diameter of the rod lens will be focused into a line. Optical glass and UV Fused Silica substrates are available for a variety of UV, Visible, and NIR applications.
Optical glass such as K9, fused silica, sapphire, MgF2, silicon (Si), ZnSe, ZnS, etc. These materials possess high transmittance, low absorption, low scattering, uniform refractive index, and specific dispersion characteristics.
Precisely hemispherical. The machining precision of the center and radius of curvature of the sphere is extremely high.
The surface is precision polished to an optical grade of 10-5 to ensure image quality and reduce scattering and aberrations.
An AR coating is typically applied to the concave surface to maximize the transmittance of specific wavelengths of light (e.g. visible light) and reduce reflection loss.
| Material | Fused Silica IR Trasmissive grade with OH< 10 PPM | |
|---|---|---|
| 1 | Diameter | 4.75mm+/-0.1mm |
| 2 | Length | 12mm+/-0.2mm |
| 3 | Clear Aperture | 4.75mm(14.922mm Naminal Circumference)*10mm Length |
| 4 | Surface Quality | 20/10 Scratch/Dig |
| 5 | Surface Figure | 1 wavelength irregularity |
| 6 | Bevel Edge | 45Deg +/-15 deg Max Bevel=0.5mm |
| 7 | Coating | MgF2 Hard Coating Centered at 780nm |
| 8 | AOI | 22Deg |
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