Visibility of red and green electroluminescent diodes for color-anomalous observers

Applied Optics
M R AllynR Z Bachrach

Abstract

This report identifies and characterizes those segments of the population for whom the visibility of electroluminescent diodes is significantly abnormal. Red- and green-emitting GaP and red-emitting GaAsP diodes are considered explicitly. It is concluded that the most important classes of anomalous and dichromatic observers are the protanopes and protanomalous, for whom the brightness of red electroluminescent diodes is substantially reduced from that perceived by normal observers. Protanopes and protanomalous observers occur at the rate of about one in fifty in the male population. They possess approximately 14% of the normal photopic sensitivity when viewing red-emitting GaP diodes and about 10% when viewing red-emitting GaAsP diodes. No classes of anomalous or dichromatic observers have been found to experience significantly decreased visibility for green GaP diodes.

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Perceptual and Motor Skills
F LeporéB Cardu
Investigative Ophthalmology & Visual Science
R S Young, G A Fishman
The Journal of General Physiology
M Alpern, S Torii
American Journal of Optometry and Physiological Optics
G A Fry
© 2021 Meta ULC. All rights reserved