https://wiki.yanding.com/ 2026-07-11T05:28:03+00:00 https://wiki.yanding.com/ https://wiki.yanding.com/lib/tpl/myconfluence/images/favicon.ico text/html 2026-07-10T08:02:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:imaging_basics:optics:light_sources:blackbody&rev=1783670566&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Blackbody 1. What is a Blackbody? A blackbody is an ideal physical model under the condition of energy conservation (thermal equilibrium) that can completely absorb all incident electromagnetic radiation energy at all wavelengths, without producing any reflection or transmission.$$M_\lambda(\lambda, T) = \frac{c_1}{\lambda^5} \frac{1}{e^{\frac{c_2}{… text/html 2026-07-10T08:02:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:imaging_basics:optics:light_sources:fluorescent_lamp&rev=1783670566&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Light Emission Principle and Spectral Characteristics of Fluorescent Lamps 1. Light Emission Principle text/html 2026-07-10T08:02:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:imaging_basics:optics:light_sources:lambertian_surface&rev=1783670565&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Lambertian Surface 1. Definition A Lambertian surface (also known as a cosine radiator or ideal diffuser) is an idealized model in optics, radiometry, and photometry. It refers to an object whose surface radiance (L) remains constant in all viewing directions, meaning the radiance L is independent of the viewing direction.$$ I_\theta = I_n \cos\thet… text/html 2026-07-10T08:02:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:imaging_basics:optics:light_sources:led&rev=1783670564&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Light Emission Mechanism of LEDs I. Definition of LED LED (Light Emitting Diode) is a solid-state semiconductor device with a PN junction semiconductor chip at its core. When current passes through the chip, electrons from the N-region and holes from the P-region meet in the junction region and undergo radiative recombination, releasing energy in th… text/html 2026-07-10T08:02:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:imaging_basics:optics:light_sources:light&rev=1783670565&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Light Light, as a core carrier spanning the fields of optical engineering and electronic information, is a key medium for energy transfer and information transmission. From basic illumination and high-precision imaging to fiber-optic communication, laser precision manufacturing, and cutting-edge quantum technologies, the applications of light are dee…