Penta prism can deviate an incident beam without inverting or reversing to 90 degree. The deviation angle of 90 degree is independent of any rotation of the prism about an axis parallel to the line of intersection of the two reflecting faces. It is commonly used in Plumb Level, Surveying, Alignment, Rangefinding and Optical Tooling.
Penta Prism is a five-sided prism containing two reflecting surfaces at 45 degree to each other, and two refracting faces perpendicular to the enterring and emerging beams. The important properties of Penta Prism are:
1. The image is neither inverted nor reversed, just deviated by 90 degree.
2.With the prism, a constant deviation angle applies to all rays transmitted by the useful aperture, regardless of the angles between these rays and the optical axis (or entrance and exit face normal).
The deviation angle of 90 degree is thus independent of the orientation of the prism, making it especially important in applications in which the prism orientation cannot be precisely controlled. Due to the geometry tric coating. The standard Penta Prism reflecting surfaces are coated with aluminum or enhanced aluminum. The coated surfaces can be painted black.
Specifications
Material
BK7 Grade A optical glass
Dimension Tolerance
+/-0.2mm
90 Degree Deviation Tolerance
<30 arc seconds
Flatness
1/2 wave @ 632.8nm
Reflectivity
R>95% per face from 630 to 680 nm
Surface Quality
60-40 scratch and dig
China Optics Net
Penta Prisms
Product No.
A x H(mm)
Add
100140
7X6
100141
10X10
100142
15X15
100143
20X20
If you are still unable to find the product that you are looking for, please contact our customer service or send email to: sales@chinaopticsnet.com . We'll try to assist and get back to you as soon as possible.