Light Source Measurement: Luminous Characteristics of Light Sources

Acquiring 4D Light Fields of Self-Luminous Light Sources Using Programmable Filter

Self-luminous light sources in the real world often have nonnegligible sizes and radiate light inhomogeneously. Acquiring the model of such a light source is highly important for accurate image synthesis and understanding. In this paper, we propose a method for measuring 4D light fields of self-luminous extended light sources by using a liquid crystal (LC) panel, i.e. a programmable filter and ...

Acquiring 4D Light Fields of Self-Luminous Extended Light Sources Using Programmable Filter

Efficacy of the intense pulsed light source on unwanted hairs

Background: The need for a rapid, non-invasive method for unwanted hair removal has led to the development of various light sources for this purpose. Objective: To evaluate the efficacy of Intense Pulsed Light Source (IPLS) on unwanted hairs. Patients and Methods: In this open, uncontrolled clinical trial, 77 different anatomical areas in 34 referred patients to “Novin Didegan Clinic” in Tehran...

The Effects of Light on Luminous Bacteria

A conservative statement would therefore be that luminous bacteria show no changes in luminescence as a result of illumination by 625 foot candles for 1.5 minutes when examined 1/200 of a second after exposure, and none as the result of illumination by 15,000 foot candles for 6 minutes when examined (1/6) of a second after exposure.

Light emission from extracts of luminous fungi.

In some luminous organisms (firefly, Cypridina, and bacteria) it is possible to obtain cell-free luminescence by the combination of a cold water extract (luciferase) with a hot water extract (luciferin). Failure in the past to observe such a reaction with extracts of luminous fungi can now be shown to be due to the following factors: (a) in crude aqueous extracts the luciferase is either too di...