Related Experiment Video
Updated: Jun 8, 2026
04:54
A Stable Phantom Material for Optical and Acoustic Imaging
Published on: June 16, 2023
Automatic three-dimensional spectrogoniometer for determination of optical properties and surface parameters.
Applied Optics
|October 12, 2010
Summary
An automatic 3D spectrogoniometer offers versatile optical characterization by varying light wavelength, incidence, and observation angles for integrated measurements.
Area of Science:
- Optics and Photonics
- Instrumentation Science
Background:
- Traditional optical characterization methods often require specialized equipment for each measurement.
- Integrating multiple optical characterization techniques can improve efficiency and reduce experimental complexity.
Purpose of the Study:
- To present a novel automatic three-dimensional spectrogoniometer.
- To demonstrate its capability for performing diverse optical characterizations in an integrated manner.
Main Methods:
- Development of an automated three-dimensional spectrogoniometer system.
- Implementation of variable control for light wavelength, angle of incidence, and angle of observation.
Main Results:
- The spectrogoniometer successfully integrates multiple optical characterization capabilities.
- Variable control of key optical parameters enables comprehensive analysis.
Conclusions:
- The presented automatic spectrogoniometer provides a flexible and integrated platform for optical characterization.
- This instrument enhances efficiency and applicability in optical research and development.
Related Concept Videos
01:16Spectrophotometry: Introduction
Spectrophotometry is the quantitative measurement of the absorption, reflection, diffraction, or transmission of electromagnetic radiation through a material as a function of the intensity and wavelength of the radiation. A spectrophotometer is a device used to measure the change in the radiation intensity caused by its interaction with the material.
The essential components of a spectrophotometer include a source of electromagnetic radiation, a slot for placing a material to be analyzed, and a...
The essential components of a spectrophotometer include a source of electromagnetic radiation, a slot for placing a material to be analyzed, and a...
01:14UV–Vis Spectrometers
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...
01:26Raman Spectroscopy Instrumentation: Overview
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
01:29UV–Vis Spectroscopy: Woodward–Fieser Rules
UV–Visible absorption spectra of conjugated dienes arise from the lowest energy π → π* transitions. The light-absorbing part of the molecule is called the chromophore, and the substituents directly attached to the chromophore are called auxochromes. A strong correlation exists between the absorption maxima, λmax, and the structure of a conjugated π system. The Woodward–Fieser rules predict the value of λmax for a given structure by adding the contributions...
01:09UV–Vis Spectroscopy: Beer–Lambert Law
The Beer-Lambert law describes the relationship between absorbance and concentration, which combines the principles established by scientists Johann Heinrich Lambert and August Beer. Lambert's law states that when light passes through a medium, the loss in intensity is directly proportional to the original intensity and the path length of the light. Beer's law proposed that the transmittance of a solution remains constant if the product of concentration and path length is constant. The modern...