OEM Coated Nd:YAG Laser Line Right-Angle Prism Mirror Optical Right Angle Prism

• After-sales Service: Repair, Replace, Refund
• Warranty: 3-Year
• Type: Right-Angle Prism
• Model NO.: RA P8
• Usage: Beam Dispersion, Beam Split
• Shape: Right-Angle, Half Cube
• Material: Glass
• Application: Digital Device
• Customized: Customized
• Product Name: Optical Right-Angle Prisms
• Substrates: Optical Glass, Infrared Glass, UV Fused Silica, N-
• Dimensional Tolerance: +/-0.1mm, as required
• Optical Quality: Commercial Grade
• Flatness: up to 1/[email protected] or better
• Surface Quality: up to 40-20 or better
• Angle Tolerance: up to 15arcsec or better
• Coatings: Uncoated, AR Coatings, Dielectric Coatings, Metall
• Clear Aperture: >90% Dimensions
• Chamfer: <0.25mmx45°
• Bevel: Break Sharp Edges
• Damage Threshold: Aluminum hypotenuse: 100 W/cm2 CW, 10 mJ/cm2 with
• Coating Durability: Per MIL-C-48497A moderate abrasion
• Mechanical: Unmounted or Mounted or Holders
• OEM: Avaliable
• Transport Package: Carton, Blister, Customized
• Specification: Customized
• Trademark: Band-Optics
• Origin: China
• HS Code: 9001909090
• Production Capacity: 100000piece/Month

Product Description

Specification

Product Name:	Optical Right-Angle Prisms
Substrates:	Optical Glass, Infrared Glass, UV Fused Silica, N-BK7, N-SF11, Sapphire, CaF2, ZnSe, etc...
Dimensional Tolerance:	+/-0.1mm, as required
Usable Aperture:	>90% Dimensions
Optical Quality:	Commercial Grade
Surface Quality:	40-20 or better (Per MIL-PRF-13830B)
Wavefront Distortion::	1/[email protected] or better
Angle Tolerance:	+/-15arcsec
Coatings:	Uncoated, AR Coatings, Dielectric Coatings, Metallic Coatings, etc...
Bevels:	Break all sharp edges
Chamfer:	<0.25mmx45°
Damage Threshold:	Aluminum hypotenuse: 100 W/cm2 CW, 10 mJ/cm2 with 10 nsec pulses, typical
Mechanical:	Unmounted or Mounted

Product Overview

Right-angle prisms are fundamental components in optical systems, prized for their simplicity, versatility, and efficiency. Their 90°-45°-45° triangular geometry (two equal legs and a hypotenuse) allows them to manipulate light in predictable and useful ways.

Here's a quick breakdown of how they function:

90° Beam Deflection: When light enters one of the legs and hits the hypotenuse face at 45°, it undergoes total internal reflection (TIR) if the angle exceeds the critical angle (which it typically does in glass). This reflects the beam at 90° out the other leg—no mirrored coating needed.
180° Beam Retroreflection: If light enters the hypotenuse face, it can be reflected twice internally (once off each leg), sending the beam back parallel to its original path—a useful property in applications like retroreflectors or periscopes.
Mirrored Versions: In some cases, especially when TIR isn't guaranteed (e.g., due to coatings or external indices), the hypotenuse can be mirror-coated to ensure reflection.

These Right-Angle Prisms are used everywhere—from binoculars and periscopes to laser systems and interferometers—because they're compact, alignment-insensitive, and introduce minimal aberrations.

Right-Angle Prisms Key Advantages:

Combines mirror-level reflectivity with superior alignment tolerance and coating-free durability, ideal for harsh environments.

Core Technology:

1). Total Internal Reflection (TIR) – delivers >99.9 % reflectivity without metal/dielectric coatings.
2). Operates reliably when the incident angle exceeds the material's critical angle, ensuring zero degradation over time.
3). Outperforms mirrors (sensitive to tilt) and coated optics (prone to scratching, 5–10 % annual reflectivity loss in aggressive conditions).

Applications:

1). Consumer Electronics – camera viewfinders, compact imaging modules.
2). Security & Aerospace – periscopes, target designators, optical sights.
3). Industrial & Medical – beam steering, inter-alignment of optical trains.

Value Proposition:

Maintenance-free, long-life right-angle deviation in a monolithic glass path—no coatings to replace, no alignment drift, just stable performance from –40 °C to +80 °C.

Right-Angle Prisms FAQ

Question	Key Decision Points / Root Causes	Typical Loss / Spec	Practical Fix / Enhancement	Where it’s Used
TIR vs. Mirrored – which one do I pick?	• Incident angle > critical angle (e.g. 41° for BK7 in VIS) → TIR • Need durability (no coating to age) → TIR • Working visible band → TIR • Angle < critical or UV/IR bands (Ge 17°) or need R > 98 % in low light → mirror	TIR: R ≈ 100 % (theory) Mirrored: R 95-99 % depending on coating	TIR: keep prism clean, use collimated beam Mirrored: choose Al+MgF2 (UV) or Au/Ag (IR) coating	TIR: camera viewfinders, lab spectrometers Mirrored: night-vision, IR thermal imagers, UV-cure lasers
Reflection loss in TIR mode?	1. Surface contamination changes n at hypotenuse → local angle drops below θc 2. Off-axis rays enter at θ < θc → light leaks through	< 0.1 % ideal < 5 % if dirty < 1 % if beam has divergence	• Clean with lens tissue + IPA • Collimate beam or use larger prism to widen angular acceptance • AR-coat entrance/exit faces only	High-power laser steering, interferometry
Can a right-angle prism act as a retroreflector?	Yes, if beam is collimated and enters one leg, double TIR on hypotenuse & opposite leg, exits parallel but offset 180°	Return beam offset = 2 × leg length	Polish all faces λ/10 to keep wavefront error < λ/4	Laser rangefinders, survey corner-cube substitutes, road-studs

Company History

Production Line

Factory Advantages

As a total solution provider on Optics, we can match your different demands as below optical components:

---Automated, High-Speed and Low-Speed Precision Polished Optics

---Precision Optical Domes for Demanding Applications

---Optical Lens, Spherical Lenses, Aspherical Lenses

---Optical Mirrors

---Optical Windows

---Optical Prisms

---Optical Filters

---Camera Assembly

FAQ

Q: What are your main products?

A: Optical Components: Aspherical Lenses, Spherical Lenses, Cylindrial Lenses, Lens Assemblies, Optical Windows, Optical Mirrors, Optical Prisms, Optical Filters, and Other Special Shaped Optics......
 

Q: What's your MOQ?

A: Normally one piece. If more, we can talk about discount. You can ship with other parts together .

Q: How about the delivery time?

A: For stocks, within one week after the payment. As to customized products, the delivery time will be negotiated according to your requirements.

 

Q: Can i get a sample to check the quality?

A: YES, we are glad to provide samples for your test. And there is discount for Trade Assurance Sample Order.

 

Q: Can you offer OEM service?

A: YES. We will custom the material, specifications and optical coatings for your optical components as your requirements.

 

Q: How to pay?

A: T/T, L/C, Western Union, Cash, Credit Card, Paypal, Alipay, MoneyGram, Assurance payment......

 

Q: What's the way of shipping?

A: We accept DHL, Fedex, TNT, UPS, EMS, SF and etc. If you have your own express number, it's great.

 

Q: How to guarantee the quality of your products? 

A: 1) Strict detection during each production process. 

2) Advanced metrology solutions: ZYGO, Mitutoyo, Agilent, TAYLOR HOBSON, TRIOPTICS, MOELLER-WEDEL.....

3) Strict inspection on products before shipment and intact product packaging ensured.

 

Q: Any other good service your company can provide?

A: 24-hour after-sale service and long-time maintenance......

Accepted delivery terms: FOB, CIF, EXW, DDU, DDP, Express.....
  Accepted payment currencies: USD, EUR, RMB......
  Accepted Languages: English, Japanese, Chinese, Spanish, Russian.....

Certifications