Positive Fresnel lenses are designed to manage light in applications requiring collimation, focusing, or finite conjugate configurations. The SC 921 lens has a focal length of 253.6 mm, a clear aperture of 179.0 x 128.4 mm², and a thickness of 1.8 mm, with infinite conjugate on the Fresnel side and 253.6 mm conjugate on the plano side. The standard material is PMMA, calibrated 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 921 |
| Product Name | Positive Fresnel Lense |
| Lens Type | Fresnel Lens |
