Positive Fresnel lenses are designed for light management, with the SC 277 model featuring a focal length of 68.5 mm, a clear aperture of 88.9 mm, and a thickness of 1.8 mm. The lens is optimized for infinity conjugate on the Fresnel side and has a plano conjugate distance of 68.5 mm. The standard material is PMMA with a refractive index of 1.49, and focal lengths are specified for 546 nm wavelength 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 277 |
| Product Name | Positive Fresnel Lense |
| Lens Type | Fresnel Lens |
