Combination of gyro north-finder, self-collimation photoelectric theodolite can be composed a ground rapid directional aiming system. In the paper, based on the CCD angle measurement technology, the self-collimation optical system is redesigned, focal length of the optical system is calculated, and the appropriate parameters are chosen. Optical conjugate design of the three light paths of light...

The light field display technology can reconstruct the virtual three-dimensional scene with high precision, providing users a highly immersive viewing experience without any auxiliary equipment. However, one of main challenges faced by this is narrow view (FOV). In paper, we present novel autostereoscopic utilizing Composite Lenticular Lens Array (CLLa) and Saddle (SLa). By time-division quadru...

The most effective treatment for cataracts is to remove the cloudy crystalline natural lens and implant an intraocular (IOL) in its place. These refractive provide same focusing as do lens. Two IOLs are designed analyzed this paper—these IOL made of (PMMA, Acrylic). quality retinal image compared with healthy eye, which based on (Liou-Brennan) eye model) LBEM). Polychromatic Point Spread Functi...

We describe a new approach for locating the focal position in laser micromachining. This approach is based on a feedback system that uses a charge-coupled device (CCD) camera, a beam splitter, and a mirror to focus a laser beam on the surface of a work piece. We tested the proposed method for locating the focal position by using Zemax simulations, as well as physically carrying out drilling pro...

A novel lens-array based illumination design for a compact co-registered photoacoustic/ultrasound transvaginal probe has been demonstrated. The lens array consists of four cylindrical lenses that couple the laser beams into four 1-mm-core multi-mode optical fibers with optical coupling efficiency of ~87%. The feasibility of our lens array was investigated by simulating the lenses and laser beam...

A synthetic polymeric lens was designed and fabricated based on a bio-inspired, "Age=5" human eye lens design by utilizing a nanolayered polymer film-based technique. The internal refractive index distribution of an anterior and posterior GRIN lens were characterized and confirmed against design by µATR-FTIR. 3D surface topography of the fabricated aspheric anterior and posterior lenses was mea...

We designed, built, and calibrated a new spectropolarimeter for the HiVIS spectrograph (R∼ 12000-49000) on the AEOS telescope. We also did a polarization calibration of the telescope and instrument. We will introduce the design and use of the spectropolarimeter as well as a new data reduction package we have developed, then discuss the polarization calibration of the spectropolarimeter and the ...

purpose : the aim of this study was to investigate the effect of misalignment (tilt & decentration) of iols in cataract surgery using liu-brennan optical eye model in a simulation. methods : a phantom with the real eye parameters –liu-brennan model– and tecnis z9000 iol were used for simulation. results : results showed that with 0.4 mm decentration and more the modulation transfer function (mt...