Positive Fresnel lenses are designed for light management in applications requiring collimation or focusing. The SC 210 lens has a focal length of 225.5 mm, a clear aperture of 178 mm, a thickness of 1.8 mm, and a plano conjugate distance of 254.0 mm with a Fresnel conjugate distance of 2007.0 mm. The lens is made of PMMA with a standard thickness of 1.8 mm and is listed with a facet spacing of 0.178 mm. Outside dimensions may extend up to 5-20 mm beyond the clear aperture. All specified focal lengths are referenced to 546 nm light in PMMA 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 210 |
| Product Name | Positive Fresnel Lense |
| Lens Type | Fresnel Lens |
