Haidinger fringes

Haidinger fringes

[′hī·diŋ·ər ‚friŋ·jəz]
(optics)
Interference fringes produced by nearly normal incidence of light on thick, flat plates. Also known as constant-angle fringes; constant-deviation fringes.
References in periodicals archive ?
The measurement technique (sometimes referred to as Haidinger fringes) analyzes interference fringes from the front and back surfaces of the wafer.