Multifacet holographic optical elements for wave front transformations
- Resource Type
- Authors
- Paul R. Haugen; Steven K. Case; O. J. Løkberg
- Source
- Applied optics. 20(15)
- Subject
- Wavefront
Materials science
business.industry
Materials Science (miscellaneous)
Holographic optical element
Holography
Phase (waves)
Volume hologram
Diffraction efficiency
Ray
Industrial and Manufacturing Engineering
law.invention
Optics
law
Light beam
Optoelectronics
Business and International Management
business
- Language
- ISSN
- 1559-128X
A new type of holographic optical element combines some of the flexibility of computer-generated holograms with the high light efficiency of volume phase holograms to produce optical elements capable of arbitrary illumination transformations with nearly 100% light efficiency. The optical element is recorded by subdividing a volume hologram film surface into numerous small areas (facets), each of which is individually exposed. A final optical system consisting of two dichromated gelatin holograms in series is demonstrated. The first hologram spatially redistributes the incident light, and the second hologram produces a desired phase front on the redistributed light.