Home / Custom / Optical Components / Optical Spherical Lens / Achromatic Cemented Lens 
Achromatic Cemented Lens is used to minimize or eliminate chromatic aberration. The achromatic design also helps minimize spherical aberrations. Achromatic Cemented Lenses are ideal for a range of applications, including fluorescence microscopy, image relay, inspection, or spectroscopy. An Achromatic Cemented Lens, which is often designed by either cementing two elements together or mounting the two elements in a housing, creates smaller spot sizes than comparable singlet lenses.
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 | Optical Flint glass & Crown glass |
|---|---|
| Diameter | 6mm~200mm |
| Diameter Tolerance | ±0.05mm(≤50mm) |
| ±0.1mm(＞50mm) | |
| Focal Length | 50mm~2000mm |
| Focal Length Tolerance | ±0.2%（＜10mm） |
| ±0.5%（＜10mm-1000mm） | |
| ±1%（＜＞1000mm） | |
| Center Thickness | 2mm~50mm |
| Surface Quality | 60/40， 40/20， 20/10 |
| Surface Accuracy | λ/2~λ/10@632.8nm，532nm |
| Clear Aperture | >85% dig diameter |
| Centration | <3arc min~ 30arc sec |
| Coating | As per the customer's request |
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