The third-order aberrations of a diffractive optical element with paraxial zone spacings are derived as a function of aperture stop position. It is shown that by placing the stop in the front focal plane, coma and astigmatism are identically zero, assuming an infinitely distant object. In addition, since the element is diffractive, the Petzval sum is also zero. Modulation transfer function comp...

PURPOSE To expand a geometrical model of diffraction efficiency and its interpretation to the multifocal optic and to introduce formulas for analysis of far and near light distribution and their application to multifocal intraocular lenses (IOLs) and to diffraction efficiency optimization. SETTING Medical device consulting firm, Newport Coast, California, USA. DESIGN Experimental study. M...

Ehsan Arbabi,1 Amir Arbabi,1 Seyedeh Mahsa Kamali,1 Yu Horie,1 and Andrei Faraon1, ∗ 1T. J. Watson Laboratory of Applied Physics, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USA Abstract Diffraction gratings disperse light in a rainbow of colors with the opposite order than refractive prisms, a phenomenon known as negative dispersion [1, 2]. While refractiv...

Jyh-Rou Sze Mao-Hong Lu, MEMBER SPIE National Chiao-Tung University Institute of Electro-Optical Engineering 1001 Ta-Hsueh Road, Hsin-Chu 300 Taiwan, Republic of China (ROC). E-mail: [email protected] Abstract. The experimental implementation of the diffractive phase element (DPE) that synthesizes three-color psudo-nondiffracting beams (PNDBs) is described. This DPE is designed with the amp...

A design for a novel diffractive optical element (DOE) that can reconstruct three different intensity patterns when it is illuminated by three different wavelengths is presented. If the chosen wavelengths are red, green, and blue, full-color reconstruction capability is obtained. Reconstruction is achieved in the near field (Fresnel domain). Computer simulation results as well as experimental e...

The Shared Aperture Diffractive Optical Element (ShADOE) is an Advanced Component Technology program to demonstrate the feasibility of combining several holographic optical elements (HOEs) into a single optic for use as the primary optic of a scanning telescope. The HOEs diffract the beam at a fixed elevation angle, nominally 30 to 55 degrees, but with the azimuthal pointing direction of each i...

The iridescent colors observed on objects such as optical disks are caused by light diffraction from their surface microstructure. We show that when an optical disk is illuminated by a light source it typically displays a major highlight strip of colors diagonally across the disk, consisting of saturated colors that vary along the strip, and a pair of weak strips of unsaturated colors that chan...