What is a ZnSe Roof Prism?
A ZnSe Roof Prism (also known as a Zinc Selenide Roof Prism or IR Roof Mirror) is a type of reflective optical prism that inverts and reverses an image by 90 degrees. It is widely used in infrared optical systems and laser alignment devices.
VY Optics manufactures precision ZnSe roof prisms with high transmission in the infrared spectrum, suitable for thermal imaging, CO₂ laser systems, and spectroscopy instruments.
Product Specifications
| Parameter | Value / Description |
|---|---|
| Material | ZnSe (Zinc Selenide) |
| Diameter | 5 mm |
| Height | 2 mm |
| Surface Quality | 40-20 Scratch-Dig |
| Flatness | λ/8 @ 633 nm |
| Coating | Optional AR or HR coating on request |
| Transmission Range | 0.6 – 18 µm |
| Refractive Index (nD) | ~2.4 @ 10.6 µm |
| Customization | Sizes, coatings, and angles available upon request |
Picture of ZnSe Roof Prism
Key Features
- High IR transmission and low absorption in 0.6–18 µm range
- Excellent surface quality for precise optical performance
- Compact design ideal for infrared imaging systems
- Customizable coating options (AR / HR / protective coatings)
- Durable Zinc Selenide material with high chemical stability
- Manufactured and polished by VY Optics to tight tolerances
Applications
- Infrared imaging systems and IR cameras
- CO₂ laser optical alignment
- Thermal detection instruments
- FTIR spectroscopy and optical metrology
- Scientific research and laboratory optics
Detailed Video of ZnSe Roof Prisma
Advantages of Choosing VY Optics’ ZnSe Roof Prism
- Expert manufacturing with 15+ years of optical experience
- High-precision polishing and quality inspection
- Custom solutions for OEM and R&D applications
- Fast delivery and global shipping support
- Comprehensive coating and design services
FAQ / People Also Ask
Q1: What is the function of a ZnSe Roof Prism?
A ZnSe Roof Prism reflects and rotates an image by 90°, commonly used in laser and infrared systems to redirect beams precisely.
Q2: Why use Zinc Selenide (ZnSe) as the material?
ZnSe offers excellent transmission in the infrared region (0.6–18 µm) and low absorption, making it ideal for CO₂ laser and IR applications.
Q3: Can ZnSe Roof Prisms be AR coated?
Yes, anti-reflective (AR) coatings can be applied to improve transmission and reduce surface reflection losses.
Q4: What are the size options available?
Standard sizes include 5 mm, 10 mm, and 20 mm prisms. Custom dimensions and angles are available upon request.
How to Choose the Right Optical Prism
Choosing the right optical roof prism depends on the material, wavelength range, coating, and application. ZnSe is a preferred choice for infrared systems due to its high transmission and durability.
Factors to Consider:
- Wavelength Range: Select a material that matches your laser or IR wavelength.
- Surface Quality: Ensure precision polishing for stable beam alignment.
- Coating Type: AR or HR coatings optimize transmission and reflection as needed.
- Size & Geometry: Choose a prism dimension that fits your optical system design.
- Environment: Consider operating temperature and humidity conditions.
