Zobrazeno 1 - 10
of 132
pro vyhledávání: '"Peifu Gu"'
Publikováno v:
Optics Communications. 282:242-246
We present a novel narrow band filter operating in both transmission and reflection for the first time to our knowledge. This proposed structure consists of one unsymmetrical dielectric Fabry–Perot cavity and an ultrathin metal film with n ≈ k .
Publikováno v:
Displays. 29:412-417
Wide view angle reflective projection lens by using Zernike polynomials surfaces are designed and presented. Detail description and analysis of Zernike polynomials surfaces are provided. Wave front aberration is analyzed and used to design the Zernik
Publikováno v:
Frontiers of Optoelectronics in China. 1:173-177
The energy from a source was rearranged through reflection or refraction by a freeform optical element in order to get the desired uniform illumination. The numerical results of first-order partial differential equation sets had been investigated to
Publikováno v:
Frontiers of Optoelectronics in China. 1:178-182
An objective lens composed of a spherical Fresnel zone plate mirror and aspheric mirrors is designed. The Fresnel zone plate with a spherical shape is analyzed, and the method to approximately replace the aspherical mirror with spherical Fresnel zone
Publikováno v:
Optics Communications. 281:2145-2148
A conventional high reflectance (HR) coating sandwiched between two thickness-tapered period thin film stacks is investigated to enhance multichannel spatial dispersion, since phase shift on reflection changes rapidly due to the mismatch induced by t
Publikováno v:
Optics Communications. 278:317-320
Electric field modeling of nodular defects is performed to investigate the interaction between defective multilayer coatings and Gaussian profile laser beam. Light-intensity is significantly enhanced as large as six times in areas adjacent to the def
Publikováno v:
Displays. 27:56-61
The efficiency and lumen output of light source for illumination system were analyzed based on Etendue, this analytical approach can predict light source collection efficiency. A new method for measuring the output intensity distribution of light sou
Autor:
Weibin Chen, Peifu Gu
Publikováno v:
Displays. 26:65-70
Optical thin films used at oblique incidence exhibit inevitable polarization dependent properties. In reflective projection display systems, Philips prisms with color splitting filters are widely used. Generally, illuminating light at different polar
Publikováno v:
PIERS Online. 1:561-565
For the sake of achieving remarkable superprism effect, we investigate in thin film Fabry-Perot filter which possess drastic change in phase and large group delay around wavelength of peak transmittance. The group delay and spatial dispersion shift a
Publikováno v:
Journal of Optics A: Pure and Applied Optics. 6:853-858
Unlike the conventional Fabry–Perot cavity, the gap length of a MEMS-based FP tunable filter is comparable with the wavelength. The phase shift on reflection from the top and bottom reflectors plays a crucial role in the determination of peak wavel