FINCHIAM (1955) discussed the value ofphotographically recording the progress of cataract and described a method whereby lens opacities were photographed by the light reflected from the fundus by trans-pupillary trans-illumination. A slit lamp was used, in which the axis of illumination was coincident with the line of observation; the mirror of the illuminating system was replaced by a thin gla...

In this research work, a multibeam antenna which is a combination of a beamformer network (BFN) and a linear array antenna, has been designed. A Rotman lens has been chosen as beamformer network and Vivaldi antennas have been selected for constructing array antenna. The Substrate Integrated Waveguide (SIW) was used for implementing Rotman lens. After explanation the structure of Substrate integ...

The lipid composition of the human lens is distinct from most other tissues in that it is high in dihydrosphingomyelin and the most abundant glycerophospholipids in the lens are unusual 1-O-alkyl-ether linked phosphatidylethanolamines and phosphatidylserines. In this study, desorption electrospray ionization (DESI) mass spectrometry-imaging was used to determine the distribution of these lipids...

purpose: to evaluate visual function in patients with different types of light-filtering intraocular lenses (iols) methods: in this prospective comparative clinical study cataract patients with different types of iols in khatam-al-anbia eye hospital, mashhad were enrolled and followed for three months postoperatively. corrected distance visual acuity (cdva), color discrimination under photopic ...

Light sheet fluorescence microscope with single light illumination enables rapid 3D imaging of living cells. In this paper we show the design, fabrication and characterization a diffractive optical element producing several sheets along 45° inclined tube. The element, which is based on multi-focal lens linear grating, generates five thin equal intensities when combined refractive cylindrical le...

The isothermal oxidation of Fe-28Al-5Cr (at%) intermetallic alloy microalloyed with Zr and B (<0.08 at%) in air atmosphere, in the temperature range of 1000 to 1200 °C, was studied. The investigation was carried out on the thin-walled (<1 mm) elements prepared by Laser Engineered Net Shaping (LENS) from alloy powder of a given composition. Characterization of the specimens, after the oxidation,...

Organic light-emitting diode (OLED) microdisplays have attracted much attention as displays for small form factor augmented reality (AR) devices. To realize glass-like thin and wide field of view (FoV) AR devices, we designed a display module with high aspect ratio microdisplay optical component. For the microdisplay, developed color OLED 32:9 0.8-inch diagonal ∼2,490-ppi CMOS backplane. expres...