Reference Section 4
At which angle is the intensity of light maximum? - Quora
Experimental investigation of the angular symmetry of optical force in a solid dielectric
Spotlight Model
Introduction to Computer Graphics, Section 7.2 -- Lighting and Material
LearnOpenGL - Light casters
Light intensity I as a function of the angle, θ . | Download Scientific Diagram
Luminous Intensity - an overview | ScienceDirect Topics
Angles for Spotlights | Search | Autodesk Knowledge Network
Ghost secondary light source for LED collimated illumination
The Cg Tutorial - Chapter 5. Lighting
LED Beam Angle Guide » Beam Angle Calculator - LampHQ
LED Beam Angle Guide » Beam Angle Calculator - LampHQ
Reflected light intensity as a function of incident angle. | Download Scientific Diagram
Shading - Wikipedia
Reference Section 4
Introduction to Computer Graphics, Section 7.2 -- Lighting and Material
Crystals | Free Full-Text | Design of an LED Spot Light System with a Projection Distance of 10 km | HTML
Light intensity I as a function of the angle, θ . | Download Scientific Diagram
Figuring out the exponent in a spotlight equation from the angle of a cone - Game Development Stack Exchange
Light intensity as a function of cos θ . | Download Scientific Diagram
スポットライト | Unreal Engine ドキュメント
Light Functions | Unreal Engine Documentation
Spot light | HLSL Development Cookbook
Aspherical lens design for real light-emitting diode with flux compensation through angular flux mapping
