Right Angle Prism
Right Angle Prisms are precision optical components used for beam bending, reflection and image orientation in laser systems, imaging instruments and optical assemblies. Chenyu Optics manufactures Right Angle Prisms with high surface accuracy, custom dimensions and optional AR coatings for demanding optical applications.
Right Angle Prisms Overview
Right Angle Prisms are precision optical components used to redirect light paths by 90° while maintaining accurate beam deviation and image reflection in optical systems.
They are commonly used in laser systems, imaging instruments and optical assemblies because they provide efficient total internal reflection, high angular accuracy and reliable optical performance. In addition, they enable compact optical designs where space-efficient light path folding is required.
Chenyu Optics manufactures Right Angle Prisms according to customer drawings and system requirements. Additionally, custom specifications including dimensions, surface quality, angular accuracy, materials and optical coatings can be provided for prototype development and repeat production.
Key Advantages of Right Angle Prisms
Beam Steering & Optical Alignment
Right Angle Prisms are widely used as beam-folding and image-reorientation elements in laser systems, imaging instruments and compact optical assemblies.
Typical Specifications of Right Angle Prisms
| Material | Optical Grade Glass / BK7 / Fused Silica |
|---|---|
| Material Type | Optical Glass, UV Fused Silica or custom materials |
| Wavelength Range | Approx. 350–2500 nm, depending on material and coating |
| Refractive Index | Approx. 1.516 @ 589 nm (BK7) |
| Density | Approx. 2.51 g/cm³ (BK7) |
| Angle Accuracy | ≤ 3 arcmin or custom |
| Surface Quality | 20-10, 40-20, 60-40 or custom |
| Surface Flatness | Up to λ/10 @ 633 nm or drawing-based |
| Beam Deviation | 90° reflection or custom angle requirements |
| Size Range | Custom square, rectangular or special-shaped prisms |
| Dimensional Tolerance | ±0.1 mm, ±0.05 mm or custom |
| Clear Aperture | ≥85% of prism area or drawing-based |
| Chamfer | 0.1–0.3 mm × 45° or drawing-based |
| Coating Options | Uncoated, AR coating, broadband AR, laser wavelength coating, custom coating |
Right Angle prism Structure
Why Choose Chenyu Optics for Right Angle Prisms
Chenyu Optics focuses on drawing-based optical component manufacturing for laser, imaging and precision optical systems. We support prototype verification, small-batch production and repeat manufacturing for non-standard Right Angle Prisms.
Manufacturing Capability for Right Angle Prisms
Precision Polishing
Controlled grinding and polishing for surface flatness, angle accuracy and low-scatter optical surfaces on all prism faces.
Optical Coating
AR, broadband AR and laser-line coating options for UV, visible and NIR prism applications.
Inspection & Packaging
Dimensional inspection, angle checking, surface review and clean protective packaging before shipment.
Custom Manufacturing Options for Right Angle Prisms
Dimensions & Geometry
Custom size, leg length, hypotenuse dimension and edge treatment can be manufactured according to customer drawings, including custom clear aperture and mounting requirements.
Surface & Angle Accuracy
Surface quality, flatness, angle tolerance and dimensional tolerances can be selected according to optical performance and assembly structure.
Coating & Material Selection
BK7, fused silica or custom substrate materials with uncoated, AR or broadband AR coatings can be specified for UV, visible or NIR laser and imaging systems.
Right Angle Prisms Material Comparison
| BK7 | N-BK7 | UV Fused Silica | Sapphire | Calcium Fluoride (CaF₂) | |
|---|---|---|---|---|---|
| Transmission | Visible to NIR, commonly 350–2000 nm | Visible to NIR, commonly 350–2000 nm, improved homogeneity | UV to NIR, commonly 185–2500 nm | UV to MWIR, commonly 0.2–5.5 μm | UV to MWIR, commonly 0.18–8 μm |
| Visible Transmission | High visible transmission | High visible transmission | High UV and visible transmission | High visible transmission | High visible transmission |
| Mechanical Notes | Standard optical crown glass, cost-effective, moderate hardness | Higher homogeneity grade of BK7 for precision optics | Low thermal expansion, good UV laser damage resistance | Very hard and chemically durable | Low dispersion, minimal fluorescence, moderate hardness |
| Typical Use | General-purpose visible-range prisms and optical assemblies | Precision imaging and metrology-grade prisms | UV laser systems, high-power laser optics | Harsh environment and high-durability optical assemblies | UV to MWIR laser and spectroscopy systems |
Applications of Right Angle Prisms
Laser Systems
Beam bending and beam steering elements for laser paths in industrial and scientific laser systems.
Beam Steering
90° redirection of collimated beams in compact optical layouts and free-space optical paths.
Optical Alignment
Reference reflectors and alignment elements for optical bench setups and test equipment.
Imaging Systems
Image erection and orientation correction in periscopes, viewfinders and optical relay systems.
Measurement Instruments
Precision reflecting elements for interferometers, rangefinders and metrology instruments.
Industrial & OEM Optics
Right angle prisms integrated into OEM optical assemblies for machine vision and inspection systems.
Right Angle Prisms FAQ
What wavelength range do Right Angle Prisms transmit?
Right Angle Prisms are commonly used from approximately 350 nm to 2500 nm depending on the substrate material. UV Fused Silica extends usable range into the deep UV, while CaF₂ or sapphire variants can extend into the mid-IR.
Why are Right Angle Prisms used for beam deviation?
Right Angle Prisms rely on total internal reflection at the hypotenuse face to redirect a beam by 90° with high angular accuracy and stable, alignment-free reflection compared with mounted mirrors.
Can Right Angle Prisms be used for high-power lasers?
Right Angle Prisms in UV Fused Silica or other laser-grade materials are commonly used in laser systems; damage threshold requirements should be discussed with drawing details for the intended laser application.
Do Right Angle Prisms require AR coating?
AR or broadband AR coating on the entrance and exit faces is recommended for most laser and imaging systems to reduce Fresnel reflection loss, while the hypotenuse face typically relies on total internal reflection and remains uncoated.
How should Right Angle Prisms be handled?
Optical surfaces can be sensitive to contamination and scratching, so clean handling and appropriate protective packaging are recommended during storage, assembly and shipment.
What information should I provide for a quotation?
Please provide leg length, angle tolerance, clear aperture, surface quality, surface flatness, material, coating requirement, quantity, operating wavelength and drawing if available.
Where can I learn more about optical prism materials?
Additional optical material information can be found from Edmund Optics.
Related Products for Right Angle Prisms
Need Custom Right Angle Prisms?
Send us your drawing, wavelength range, size, angle tolerance, coating requirements and quantity. Chenyu Optics will review the optical and mechanical specifications and provide a suitable Right Angle Prism manufacturing suggestion.