N-BK7 Right Angle Prisms
Right Angle Prism is deviating or deflecting a beam of light with 90°or 180°. It is often used in telescope, periscope and other optical system.
Description
Right Angle Prism is deviating or deflecting a beam of light with 90°or 180°. It is often used in telescope, periscope and other optical system.
Deviate Beam or Image by 90° or 180°
Material: N-BK7, UV Fused Silica, CaF2, ZnSe, or Ge
AR-Coated, HR coated are Available
Specifications:
| Specification | Value |
|---|---|
| Materials | Optical glasses, Fused Silica, Silicon, Zinc Selenide (ZnSe), and other materials |
| Diameter Tolerance | +0.0 / -0.1 mm |
| Focal Tolerance | ±1% |
| Surface Quality | 60-40, 40-20, 20-10, 10-5 |
| Centration | ±3 arc min |
| Surface Flatness | λ/4 @ 632.8 nm |
| Clear Aperture | >85% |
| Bevel | Protective |
| Coating | Optional |
What kinds of materials can Elyonoptic use to make Plano-Convex Cylindrical Lenses?
CDGM optical glasses, SCHOTT, OHARA, Fused Silica, Sapphire, Zinc Selenide (ZnSe), and other infrared materials.
What services can Elyonoptic provide?
- Small batch products are numbered,and each product of provider the ZYGO surface data,Diameter data,Center thickenss data,Total height data,center bias data
- Large-scale products provide five-thousandths of product data
- Provide the proof of product material
- Coating products provide coating curve
How long is Elyonoptic delivery date?
10-300pcs:15-25days
1000-5000pcs:35days
5000-10000pcs:45days
(Specific delivery date suggestions and sales verification)
We deliver bulk products in batches
FAQs
1. What is your MOQ for N-BK7 right angle prisms?
Our standard MOQ is 50 pieces for regular production.
For small orders (≤50 pcs), we can still accept production and provide full inspection reports and measurement data for each piece upon request.
2. Do you support small batch or prototype orders?
Yes. We support small batch and prototype production for testing and evaluation before mass production.
3. What is your production lead time?
- Standard polished fused silica windows: 4–5 weeks
- Coated optical windows (AR / HR): 5–6 weeks, depending on coating type and specifications
4. Do you provide inspection reports?
Yes. We provide quality inspection reports based on order quantity:
- ≤50 pcs: Full inspection data for each piece available
- 100–1,000 pcs: 5%–10% random sampling inspection reports
- >1,000 pcs: 0.5% sampling inspection reports
All inspection data includes dimensional and surface quality parameters.
5. What coating options are available?
We offer:
- Anti-Reflection (AR) coatings
- High-Reflection (HR) coatings
- Broadband coatings
- Custom wavelength coatings (UV / Visible / IR)
6. Can you manufacture custom sizes and shapes?
Yes. We support OEM manufacturing according to drawings.
Available shapes include:
- Round
- Square
- Rectangular
- Stepped
- Wedged
- Drilled / special structures
7. What quality certifications do you have?
We are certified under international quality management systems, including:
- ISO 9001 Quality Management System
- IATF 16949 Automotive Quality System
- Good Standardization Practices Certification
We also apply strict internal quality control processes, including dimensional inspection, surface quality testing, and coating performance verification before shipment.
Coating
Uncoated N-BK7 Typical Transmission
Coating solutions offered by Elyon
- Anti-Reflection Coating (AR / BBAR)
(1) Single-layer Magnesium Fluoride (MgF₂) AR Coating
visible spectrum (400–700 nm). Single-side reflectance is controlled below 1.5%。
(2) Standard Multi-layer Broadband AR Coating
A-type coating: 350~700 nm visible range, average reflectance＜0.5%
B-type coating: 650~1100 nm near-infrared band
AB broadband coating: 400~1100 nm (VIS+NIR dual band)
C-type coating: 1050~1700 nm SWIR
(3) Single-Wavelength V-type Narrowband AR Coating
Custom coating for discrete laser wavelengths: 405/488/532/632.8/808/1064 nm, reflectance＜0.25% at target wavelength
2. High-Reflection Coating
(1) Metallic HR Coatings (Aluminum / Silver / Gold with protective overcoat)
Aluminum (Al) coating: 400 nm ~ 2 μm, reflectance＞90% in visible spectrum, covered with SiO
Silver (Ag) coating: 500 nm ~ 2 μm, reflectance＞95% for VIS & NIR
Gold (Au) coating: 700 nm ~ 2 μm, reflectance＞98% in near-infrared
(2) All-Dielectric Multi-layer HR Coating (High Laser Damage Threshold for Laser Application)
Visible HR coating: 450~700 nm average reflectance＞99.5% or single wavelength HR at 532 nm
NIR HR coating: ＞99.8% reflectance at 808/1064/1310/1550 nm
