Search
Menu
Alluxa - Optical Coatings LB 8/23
Luminous Flux Dictionary Terms

polarization photometer
A photometer having a pair of Nicol prisms introduced into the beam from the brighter of two sources to be compared. Turning...
luminous flux
Descriptive of the radiant power of visible light modified by the eye response. It is the measure of the flow of visible...
illuminance
Luminous flux incident per unit area of a surface; luminous incidence. (The use of the term "illumination" for...
luminous intensity
Luminous flux emitted by a source in a given range of directions; the unit of measure is the lumen/steradian, now known as...
chip-on-board lights
Chip-on-board (COB) lights refer to a type of LED lighting technology where multiple LED chips are directly mounted onto a...
photocathode luminous sensitivity
The responsivity of a photocathode to luminous energy equal to the ratio of the photoelectric emission to the incident...
total flux
The luminous flux emitted by a light source in all directions.
lumen
A lumen is a unit of measurement used to quantify the amount of luminous flux, which is the perceived power of light. In...
luminance
Luminous flux emitted from a surface per unit solid angle per unit of area, projected onto a plane normal to the direction...
illuminated
Characteristic of a surface or object that has luminous flux incident upon it.
spectral luminous efficacy
Ratio of the luminous flux in a beam of radiation to the spectral radiant flux in the same beam at a given wavelength.
luminous efficacy
Quotient of total luminous flux divided by total radiant flux; lumens per watt. (For a source, quotient of total luminous...
luminous emittance
Luminous flux emitted per unit area of a source, expressed as lumens per area.
luminous exitance
The total luminous flux given out per unit area; i.e., the sum of the luminous emittance and any radiation that is reflected...

(14 results found)

Explore Our Content
News
Features
Latest Products
Webinars
White Papers
All Things Photonics Podcast
Videos
Our Summits & Conferences
Industry Events
Bookstore
Join Our Community
Subscribe
Advertise
Become a member
Sign in
Contribute a Feature
Suggest a Webinar
Submit a Press Release
Mobile Apps

About Us
Our Company
Our Publications
Contact Us
Career Opportunities
Teddi C. Laurin Scholarship

Terms & Conditions
Privacy Policy
California Consumer Privacy Act (CCPA)



©2024 Photonics Media
100 West St.
Pittsfield, MA, 01201 USA
[email protected]
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.