Diffractive Alvarez lens
A diffractive Alvarez lens is demonstrated that consists of two separate phase plates, each having complementary 16-level surface-relief profiles that contain cubic phase delays. Translation of these two components in the plane of the phase plates is shown to produce a variable astigmatic focus. Both spherical and cylindrical phase profiles are demonstrated with good accuracy, and the discrete surface-relief features are shown to cause less than {lambda}/10 wave-front aberration in the transmitted wave front over a 40 mmx80 mm region. (c) 2000 Optical Society of America.
- OSTI ID:
- 20215069
- Journal Information:
- Optics Letters, Journal Name: Optics Letters Journal Issue: 1 Vol. 25; ISSN 0146-9592; ISSN OPLEDP
- Country of Publication:
- United States
- Language:
- English
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