We deal with the imaging spectrometer based on the Offner scheme. We define the optical transfer function of the imaging spectrometer based on the Offner scheme. We define the spectrum reconstruction error for red LED.

Some image quality parameters, such as the Strehl ratio and the optical transfer function, are analysed in the generalized phase-space, or x-p domain, of the fractional Fourier transform associated with a modi®ed onedimensional pupil function. Some experimental results together with computer simulations are performed which illustrate the tolerance to defocus of di€ erent apertures.

Accurate FET Model parameters need to be determined to give accurate simulation results for RF amplifiers. The accuracy required varies depending on the application of the final amplifier. For Doherty amplifiers, a high accuracy is required for the transfer characteristic of the amplifier. An amplifier was simulated using a model obtained from data sheet information, and then built. Measurement...

During the last decade aberration correction became possible for several types of electron optical instruments. Correctors for the spherical aberration of TEM / STEM objective lenses are now commercially available [1,2]. In case of the SEM [3] and the LEEM / PEEM [4] the correction of both the spherical and the chromatic aberration has been demonstrated in experiments. In spite of these great a...

Optical modeling suggests that levels of retinal defocus routinely caused by presbyopia should produce phase reversals (spurious resolution−SR) for spatial frequencies in the 2 cycles/letter range known to be critical for reading. Simulations show that such reversals can have a decisive impact on character legibility, and that correcting only this feature of defocused images (by re-reversing co...

The results of recent analytical work performed to characterize the short-exposure blurring effects of path integrated optical turbulence for annular aperture systems is described using the modulation transfer function. Results presented here extend the circular case to the annular aperture problem involving a circularly symmetric central obscuration associated with telescope optics secondary m...

Inspired by the discussion in most recent neurological research about the role of callosal fiber connections with respect to brain asymmetry [1, 2] we developed a technique that can measure distances between brain hemispheres in a non-Euclidean, curvilinear space. The new technique is a generic morphometric tool for measuring minimal distances within and across 3-D structures, but the project d...