Blogs

Aberration Aberration is defined as an optical system performance from the prediction of paraxial optics. In the image formation system, it occurs when light from one point of an object…

EYE AND IT’S REFRACTIVE MEDIAS:- The Eye of a human body acts as an imaginary window from where one can visualise the beauty of this materialistic world. Eye is one…

                   Ophthalmology study is completely based on optical devices. Prism is also an optical device and it is wisely used in Ophthalmology and Optometry fraternity. Prism plays a major role…

Almost everyone is familiar with the word “lens". We have crystalline lenses in our eyes. Sometimes we need artificial lenses to correct our Refractive errors such as myopia, hypermetropia, astigmatism…

Lens: A piece of transparent material (such as glass) whose two opposite regular surfaces are either curved or one is curved and the other is flat and which is used…

ABSTRACT Prism is a homogenous , transparent medium bounded by two plane surfaces, inclined to each other at an angle.  It has two refractive surfaces,  angle of the prism ,…

When a ray of light enters a denser medium it is refracted towards the normal in such a manner than the ratio of the sine of the angle of incidence…

What is reflection? Reflection is the process of bouncing back of wavefront from a plane surface when a ray of sound or light is independent on that surface. it is…

DEFINATION: (photo = light, metry = measurement) Photometry is the branch of science that deals with the measurement of visible light in units that are weighted according to the sensitivity…

The facts we need to know about radiometry, that radiometry is the science of measurement of optical radiation at any wavelength, based simply on physical measurements. Radiant energy cannot be…