Title :
Gray-level image generation by multiphase diffraction grating
Author :
Lee, D.J. ; Kim, N. ; Song, S.H. ; Suh, H.H.
Author_Institution :
Dept. of Comput. & Commun. Eng., Chung-Buk Nat. Univ., Cheongju, South Korea
Abstract :
The diffraction gratings which split a incoming beam into multiple spots are useful optical devices for the generation of regular array in the Fourier plane. The structure of the grating can be divided into rectangular cells such that each cell imparts a phase delay of O~2π[rad] to the incident wave front. So, this pixelated grating is called multiple-beam hologram or computer-generated hologram, and it can produce a desired diffraction pattern at the arbitrary positions. In this paper, we have designed and implemented the diffraction gratings written by laser pattern generator for obtaining a images that have weighted intensity values
Keywords :
computer-generated holography; holographic gratings; laser beam applications; optical design techniques; optical fabrication; optical images; Fourier plane; arbitrary positions; computer-generated hologram; diffraction pattern; gray-level image generation; incident wave front; incoming beam; laser pattern generator; multiphase diffraction grating; multiple spots; multiple-beam hologram; optical devices; phase delay; pixelated grating; regular array; weighted intensity values; Brightness; Charge coupled devices; Charge-coupled image sensors; Diffraction gratings; Image generation; Optical diffraction; Stochastic processes; Surface emitting lasers;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1995. 8th Annual Meeting Conference Proceedings, Volume 1., IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-2450-1
DOI :
10.1109/LEOS.1995.484514