Publication detail

Analytic description of wave fields in focal regions of diffractive lenses

CHMELÍK, R.

English title

Analytic description of wave fields in focal regions of diffractive lenses

Type

journal article - other

Language

en

Original abstract

On the assumption that the transmission function of a diffractive lens is periodical, the Kirchhoff diffraction integral is evaluated analytically in the paraxial region. The amplitude of the wave is expressed in terms of the infinite series which rapidly converges in the vicinity of the focal point. Hence, only a small number of terms provides an acceptable approximation of the amplitude in this region. The new formalism includes also axial locations outside the focal planes. By means of the derived analytical expressions, the image parameters (resolution, depth of field) may be related to the parameters of the diffractive lens.

English abstract

On the assumption that the transmission function of a diffractive lens is periodical, the Kirchhoff diffraction integral is evaluated analytically in the paraxial region. The amplitude of the wave is expressed in terms of the infinite series which rapidly converges in the vicinity of the focal point. Hence, only a small number of terms provides an acceptable approximation of the amplitude in this region. The new formalism includes also axial locations outside the focal planes. By means of the derived analytical expressions, the image parameters (resolution, depth of field) may be related to the parameters of the diffractive lens.

Keywords in English

wave optics, focal region, focusing, diffractive optics, holographic optical elements

RIV year

1996

Released

01.01.1996

ISSN

0950-0340

Journal

Journal of Modern Optics

Volume

43

Number

7

Pages count

8

BIBTEX


@article{BUT38191,
  author="Radim {Chmelík},
  title="Analytic description of wave fields in focal regions of diffractive lenses",
  journal="Journal of Modern Optics",
  year="1996",
  volume="43",
  number="7",
  month="January",
  issn="0950-0340"
}