The precise manipulation of a propagating wave using phase control is a fundamental building block of optical systems. The wavefront of a light beam propagating across an interface can be modified arbitrarily by introducing abrupt phase changes. We experimentally demonstrated unparalleled wavefront control in a broadband optical wavelength range from 1.0 to 1.9 micrometers. This is accomplished...

Caustics are captivating light patterns created by materials bundling or diverting light by refraction or reflection. We know caustics as random side effects, appearing, for example, at the bottom of a swimming pool. In this paper we show that it is possible to control caustic patterns to form almost any desired shape by optimizing the geometry of the reflective or refractive surface generating...

PURPOSE To evaluate efficacy, predictability, and stability of refractive treatments using light-adjustable intraocular lenses (IOLs). SETTING University Hospital Virgen de la Arrixaca, Murcia, Spain. DESIGN Prospective nonrandomized clinical trial. METHODS Eyes with a light-adjustable IOL (LAL) were treated with spatial intensity profiles to correct refractive errors. The effective chang...

This study aims to identify the effect of using gadgets on refractive errors. The method used is cross-sectional. results showed that there was no duration gadget, intensity light, position gadget errors, but an visibility and genetics In conclusion, are factors affect refraction. 
 Keywords: Gadgets, Refractive Disorders, Myopia

OCTOBER 2003 AMERICAN METEOROLOGICAL SOCIETY | T he interplay of sunlight, moonlight, or anthropogenic light sources with cloud and precipitation particles can produce a wide variety of optical phenomena, some with dazzling arcs and colors, in the sky around us. These naturally occurring patterns of redistributed light, often referred to generally as atmospheric optics, represent an especially ...

We demonstrate two orders of magnitude enhancement of light absorption in certain thin-film photonic crystal PC architectures due to strong resonances arising from parallel interface refraction PIR . This anomalous type of refraction is acutely negative and usually out of the plane of incidence. Over a wide range of frequencies, light impinging on idealized two-dimensional 2D thin-film photonic...