In the present paper we show how to obtain rapidly the spectral BRDF and BTDF of different display components or transparent displays using Fourier optics system under different illumination configurations. Results can be used to simulate the entire structure of a LCD display or to predict transparent display performances under various illuminations. key words: BRDF, BTDF, multispectral, diffus...

It has been shown that the fractional Fourier transform, recently very intensively investigated in mathematics, quantum mechanics, optics and signal processing, can be obtained as a special case of the earlier introduced linear coordinate transformations of the ambiguity function or Wigner distribution. Some applications of the generalized fractional transform on the time-frequency analysis are...

This study examines single trial hemodynamic response estimation in event-related fNIR spectroscopy. In a working memory task, the estimates of single trial hemodynamic responses in dorsolateral prefrontal cortex are compared across subjects. ©2003 Optical Society of America OCIS codes: (300.6340) Spectroscopy, infrared; (070.0070) Fourier optics and optical signal processing

The fractional cosine and sine transforms – closely related to the fractional Fourier transform, which is now actively used in optics and signal processing, and to the fractional Hartley transform – are introduced and their main properties and possible applications as elementary fractional transforms of causal signals are discussed.

Approximation errors of the MSE merit function for joint digital-optical system optimization are caused by use of rectangular sampling grids. We overcome this problem by adapting the MSE calculations to use flexible non-rectangular sampling topologies. c © 2009 Optical Society of America OCIS codes: (110.1758) Computational Imaging, (000.4430) Numerical Approximation and Analysis, (070.0070) Fo...

We demonstrate both theoretically and experimentally the generation of a tunable two-dimensional superoscillating optical field through the interference of multiple Airy beams. The resulting pattern exhibits self-healing properties for a set of sub-Fourier diffraction spots with decreasing dimensions. Such spatial optical fields might find applications in microscopy, particle manipulation, and ...

The Luneburg lens is an aberration-free lens that focuses light from all directions equally well. We fabricated and tested a Luneburg lens in silicon photonics. Such fully-integrated lenses may become the building blocks of compact Fourier optics on chips. Furthermore, our fabrication technique is sufficiently versatile for making perfect imaging devices on silicon platforms.

We experimentally investigate the dispersion relation of silicon-on-insulator waveguides in the 1.5 microm wavelength range by using a technique based on far-field Fourier-space imaging. The phase information of the propagating modes is transferred into the far field either by linear probe gratings positioned 1 microm away from the waveguide core or by residual gratings located on the sidewalls...

Fourier transform digital holographic adaptive optics imaging system is described. The results from the simulation and experiment are reported that demonstrate the feasibility of this adaptive optics system. OCIS codes: 090.1995; 110.1080; 170.4470 Incorporation of the adaptive optics(AO) system into vision science has yielded retinal images with unprecedented resolution [1, 2]. The cone mosaic...