N-BK7 Wedge Prism
Wedge prism is an optical element with plane-inclined surfaces, usually the faces are inclined toward one another at a very small angles.
- Low birefringence and high uniformity
- Wide-band transmittance is excellent.
- Stable and controllable beam deflection
Specifications
|
Parameter |
Value |
|
Angle Tolerance (arcsec) |
±30 |
|
Bevel |
Protective bevel as needed |
|
Coefficient of Thermal Expansion CTE (10⁻⁶/°C) |
7.1 |
|
Design Wavelength DWL (nm) |
632.8 |
|
Image Orientation |
Beam Deviation |
|
Substrate |
N-BK7 |
|
Surface Flatness |
λ/10 |
|
Surface Quality |
80-50 / 20-10 |
N-BK7 Wedge Prism is a precision optical component designed to slightly deviate a beam of light without altering its other properties.
Made from high-quality N-BK7 optical glass, these prisms feature excellent transmission in the visible and near-infrared wavelength ranges.
Wedge prisms can be used individually to deviate a laser beam a set angle, or two wedge prisms can be used together for beam steering applications.

What is a wedge prism used to?
People often use it to slightly deflect or deviate a light beam without significantly changing its other properties.
Because the two surfaces are not parallel, the prism introduces a small angular deviation, which makes it useful in many optical systems.
Main Uses of a Wedge Prism:
- Beam Steering & Alignment
- Eliminating Interference
- Optical Testing & Calibration
- Spectroscopy & Imaging
- Laser Systems
Optical Properties:
- Deviation Angle: Controlled by the wedge angle, ideal for fine beam alignment.
- Transmission Range: High optical clarity in the visible and NIR regions.
- Low Birefringence: Also, it ensures stability in polarization-sensitive applications.
- Durability: Resistant to scratching and environmental conditions compared to softer materials.
Why Choose N-BK7 Wedge Prisms?
Chenyu N-BK7 wedge prisms offer an excellent balance of optical performance, affordability, and durability.
They are ideal for both commercial optical systems and scientific research.
Our experienced design team provides customers with support for optical system design, covering the entire process from initial design to prototype development and production.
Therefore, if you need it, please contact us at any time.







