Optics

lenses are lenses with complex curved surfaces, such as where the radius of curvature changes according to distance from the optical axis. It offers excellent aberration correction performance, which provides superior resolution, even with compact optics composed of a small number of elements. Astigmatism In a system with astigmatism, the power of the optical system

by concentrating sunlight. • 1000 AD • Reading stone • The first vision aid, called a reading stone, is invented. It is a glass sphere placed on top of text, which it magnifies to aid readability. • 1021 AD • Book of Optics • Muslim scholar Ibn al-Haytham writes hisBook of Optics. It eventually transforms how light and vision are understood. • 1284 AD • First eye glasses • Salvino D’Armate is credited with inventing the first wearable eye glasses. • 1590 AD • Early microscope • Zacharias Janssen

of EM waves. We analyse the mechanism by which metamaterials are able to exhibit this property which is exploited to develop the Harry Potter-esque invisibility cloaks. We briefly discuss the whole new branch of optics called “Transformation Optics” developed for this purpose, and comment on the extent to which these materials can cloak. Introduction Metamaterials are artificially designed materials which have properties that cannot be found in natural materials.[1]

FIGURE 1.7- A magnified view of a single lenslet shows a portion of an aberrated wavefront (red curve) passing through. If the wavefront had been flat (aberration-free), it would have focused to a point on the video sensor (CCD) on the lenslet's optic axis (yellow dot). Refractive errors distort the wavefront out of a plane, so a wavefront portion (red curve) enters the lenslet curved and tilted. The light will therefore be focused to another part (red dot). The dot will be shifted by an amount that

I am a learner. I am a sporting competitor. I am not afraid of failure. I am eager to learn the lessons required to reach the top. I dare say it is a very pleasurable mix. My views on learning are not extraordinary. They are however centred on comprehensive and investigative approaches to engineering problems. I am happiest when I am identifying problems – in a complex circuit, in control systems, logic and digital circuits or simply the detection of flaws in coding. When the problem is accessible

This is a brief review of Leber’s Hereditary Optic Neuropathy (LHON) otherwise known as Harding disease. LHONs is a degenerative eye disease that causes vision loss in the teen years of those afflicted. As most optic neuropathies LHONs is heterogeneous genetic and a minimum prevalence of 1 in 10000. However, differing from many similar hereditary optic neuropathies LHONS is a maternally inherited mutation and has never been observed to be paternally inherited. Meaning that the gene responsible is

light. We have all had a physics class that at least brushed the introduction of optics, but we can still further our comprehension by experimenting with optics that have different characteristics. Does one axis truly get inverted when viewing an object through a lens? How significant of an effect does human error have in calculating reflection (if any)? How much does magnification blur an image viewed through an optic? How much does the angle of light deflect from a change of medium? PROCEDURE: First

Lab Report 8 Physical Optics Physics 262-003 Author: A. Coughran Lab Partners: E. Ortiz, H. Barham Date: 5/10/17 Lab Report 8 A. Coughran 5/10/17 Objective: The objective in Lab 8 is to measure wavelength of five emission lines of light and a laser beam through the principle of light interference. Theory: Light passed through a transmission grating is often sent in all directions due to interference. The grating acts as a new wave source and causes the light to travel in

change the spectral behavior in term of intensity and position of the transmitted peaks. The structures that support EOT have discovered their applications in numerous fields including visible spectroscopy, Raman spectroscopy, sub-wavelength optics, nonlinear optics, and photolithography. As the EOT is influenced by parameters like the shape and periodicity of the holes, devices made in light of this marvel will be more sensitive and supports larger selectivity. Regardless of these advantages a large

Leber’s Hereditary Optic Neuropathy: A Genetic Disease that Affects Metabolism In 1971, Theodor Leber, a German ophthalmologist, first described distinctive symptoms of central vision loss in a group of patients. Leber’s hereditary optic neuropathy (LHON) was later named in his honor. With the discovery of mitochondrial DNA came the ability to identify the genetic cause of this disease. It is a maternally inherited mitochondrial disease that most commonly affects young men aged 15 to 30 years old