Definition of additivity of luminance

Suppliers Products Categories Handbook Dictionary Careers
Resources Photonics Spectra BioPhotonics Vision Spectra Virtual Events & Summits Educational Institutions Add/Update Your Listing Exhibitor Listing Portal Become an Exhibitor Buyers' Guide Print Edition Marketplace Help
Subscribe Advertise

Suppliers Products Categories Handbook Dictionary Careers

Resources

Photonics Spectra BioPhotonics Vision Spectra Virtual Events & Summits Educational Institutions Add/Update Your Listing Exhibitor Listing Portal Become an Exhibitor Buyers' Guide Print Edition Marketplace Help

DataRay Inc. - ISO 11146-Compliant Laser Beam Profilers

Photonics Dictionary

additivity of luminance: The additivity of luminance refers to a principle in visual perception and color theory where the perceived brightness of a combination of light sources or colors is the sum of the brightness of each individual source or color component. In simpler terms, it means that when different light sources or colors are combined, the total perceived brightness is the sum of their individual brightness values.

Linear combination: When lights of different intensities or colors are mixed, the resulting brightness perceived by the human eye is a linear combination of the individual luminances. For example, if you mix two light sources with luminances L1 and L2, the total luminance L_total perceived will be L_total = L1 + L2.

Application in displays: Additivity of luminance is crucial in the design of displays (like monitors and TVs) where individual pixels emit light (e.g., in additive RGB color model), and the overall brightness perceived by the viewer is determined by the combined intensity of these pixels.

Perceptual brightness: While additivity of luminance assumes linear addition, the human eye's perception of brightness can sometimes involve nonlinearities due to factors like adaptation to different light levels or simultaneous contrast effects.

Excelitas PCO GmbH - Industrial Camera 11-24 VS MR

Popular Articles

Explore Our Content
News
Features
Latest Products
Webinars
White Papers
All Things Photonics Podcast
Photonics Spectra Now
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)

Requesting information about:

* First Name:

* Last Name:

* Email Address:

* Company:

* Country:

Message:

When you click "Send Request", we will record and send your personal contact information to the supplier by email so they may respond directly. You also agree that Photonics Media may contact you with information related to this inquiry, and that you have read and accept our Privacy Policy and Terms and Conditions of Use.

* Required

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.