Maker of the Optical Design Software OpTaliX
Fresnel Lens
Fresnel lenses are constructed such that the curved surface of a lens is collapsed in annular zones to a thin plate. As shown in the figure below, this has the refracting effect of the lens without its thickness or weight. Such lenses are often used as condensors in overhead projectors, spotlights and signal lamps.
The annular facets are modelled exactly in OpTaliX. Thus, various depths of the annular facets in a Fresnel lens lead to different aberrations. Fresnel surfaces can be refracting, reflecting, aspheric and decentered/tilted. The may also be grouped in arrays.
Overview
Examples
- Non-Sequential
- Special Apertures
- Gradient Index
- Hologram
- Zoom
- Array Surfaces
- Fresnel Lens
- Light Pipe
- Global References
- Geometric Analysis
- Diffraction Analysis
- Interferogram
- Physical Optics (350kb)
- Fibers
- Optimization
- User Defined Graphics
- Glass Manager
- Coatings
- Macro Language
- ISO Element Drawing
- Surface Deformations
- Ghost Image Analysis
- Illumination