Positive Fresnel lenses are designed to manage light with plano faces and facet structures optimized for collimation or focusing. The SC 231 lens has a focal length of 16.3 mm, a clear aperture of 18.0 mm, a thickness of 1.8 mm, and is specified for infinite conjugate on the Fresnel side with a 16.3 mm conjugate on the plano side. The standard material is PMMA with a refractive index of 1.49, and focal lengths are calibrated for a wavelength of 546 nm with a tolerance of ±5%.
Positive Fresnel Lenses can be designed as a collimator, collector or with finite conjugates. They are usually corrected for spherical aberration.
The designs can be trimmed according to customer requirements (within limits of clear aperture). It is possible to combine a Fresnel lens structure with other structures like diffusers or microlens arrays in the same part through double-sided structuring. Optical coatings for increased efficiency are possible.
| ORAFOL Fresnel Optics GmbH | |
|---|---|
| Product Category | Optical Lenses |
| Product Number | SC 231 |
| Product Name | Positive Fresnel Lense |
| Lens Type | Fresnel Lens |
