摘要:

Starting from linearity considerations and the Huygens-Fresnel principle, the use of ‘matched’ illumination in image formation with coherent light is described. As typical examples, the influence of a longitudinal mismatch of illumination on the images of small circular apertures is numerically studied. For comparison, the results on the defocused images of the same objects under ‘matched’ coherent illumination are also given.

ISSN:0030-3909    

DOI:10.1080/713819338

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

Using a series expansion in Zernike polynomials to express the pupil function of an optical system, a means for computing the Optical Transfer Function has been found which avoids explicit numerical integration.

ISSN:0030-3909    

DOI:10.1080/713819333

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

A rapid method of determining the coefficients of the monochromatic aberration polynomial of an optical system is described and tables of the universal coefficients for eleven polynomial types are given for ready use by an appropriate routine of a computer ray-trace programme. Results on the accuracy of aberrations represented by the polynomials so constructed are given for some optical systems. Applications of the method to image assessment and automatic optical design are discussed. Similar methods of calculating the integrated radius of gyration of the geometrical point-spread function and for determining the coefficients of a chromatic aberration polynomial are suggested.

ISSN:0030-3909    

DOI:10.1080/713819340

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

Single-mode optical waveguide parameters, the refractive index and thickness, can be determined from the measurements of the propagation constants at multiple wavelengths. The dispersion curve and the guide thickness obtained by a two-mode method are compared with those determined by a three-wavelength and a six-wavelength technique using both symmetric and unsymmetric optical waveguides as examples.

ISSN:0030-3909    

DOI:10.1080/713819341

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

摘要:

Stearate thin films are built up by the Langmuir-Blodgett method. Their refractive index can be continuously adjusted (1·20<n<1·50) by a suitable process which is described. Some optical properties and practical applications are studied.

ISSN:0030-3909    

DOI:10.1080/713819339

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

ISSN:0030-3909    

DOI:10.1080/713819334

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

ISSN:0030-3909    

DOI:10.1080/713819336

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

ISSN:0030-3909    

DOI:10.1080/713819337

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

ISSN:0030-3909    

DOI:10.1080/713819335

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor

ISSN:0030-3909    

DOI:10.1080/716099404

出版商:Taylor & Francis Group    

年代:1976

数据来源: Taylor