The equilateral prism is a special type of triangular prism with all three apex angles precisely 60°. Its symmetrical geometry makes it especially well-suited for high-precision dispersion measurements and beam steering applications—delivering outstanding optical performance in spectroscopic analysis and interferometry.
Specifications:
| Parameter | Description |
| Material | e.g., K9 glass |
| Dimensions | 20×20×20mm~50×50×50mm |
| Apex Angle | 60° |
| Surface Coating | Two faces: AR coating; One face: optional high-reflection (HR) coating |
| Function | Dispersion / Beam steering |
| Operating Wavelength Range | 400–1100nm |
Optical Path Diagram:”

Typical Applications:
• Spectrometers
• Interferometers
• Optical teaching laboratories





