The DC 1100L neg is a negative Fresnel lens designed to diverge light rays, with a focal length of -185.8 mm at 546 nm in PMMA, a clear aperture of 0.508 mm, and a standard thickness of 1.8 mm. The lens is optimized for infinity conjugate on the plano side and -185.8 mm conjugate on the Fresnel side, with an outside diameter up to 20 mm beyond the clear aperture. The standard material is PMMA with a refractive index of 1.49.
A negative Fresnel lens is the opposite of a positive Fresnel lens with diverging light rays.
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 | DC 1100L neg |
| Product Name | Negative Fresnel Lense |
| Lens Type | Fresnel Lens |
