Custom Conical Prism/Cone Prism

Core Optical Behaviors

• Constant Deflection: Light refracts at a fixed angle (determined by refractive index and cone angle) regardless of radial position, creating an extended focal line instead of a single point.
• Beam Shaping: Converts Gaussian beams to Bessel-like beams (long-distance, low-divergence) or hollow ring beams with a dark central core.
• No Single Focus: Unlike lenses, it forms a "line focus" along the optical axis; ring diameter increases with propagation distance while width remains nearly constant.