Laser Grade Penta Prisms

 Laser Grade Penta Prisms

Product name : Laser Grade Penta Prisms
Description :
● Reflects rays through a 270° angle by two reflections, does not invert the image
● Movement of the prism, does not affect the right angle at which rays are reflected
● Penta prisms are offered as uncoated

Penta prisms are extremely useful in alignment systems as they define a right angle very precisely and independently of angle of incidence. Rays entering one face emerge from the adjacent face at precisely 90° after they have undergone two reflections inside the prism for a total of 270°. The penta prism acts as a turning mirror which is insensitive to alignment. For custom applications, anti-reflection coatings are applied to the entrance & exit surfaces. Either metallic or dielectric high reflector coatings are applied to the 2 reflective surfaces.

Specification
Material BK7A
Surface Flatness < λ / 4 @ 633 nm
Surface Quality <40 / 20
Dimension Tolerance < + 0.00 / – 0.20 mm
Angular Deviation <30 arc sec
Clear Aperture >85% in central circular dimension
Bevel 0.3 mm (typical) x 45°
Coating Uncoated
Laser Grade Penta Prisms
Model Description Material Dimensions A=B+H (mm) Price(USD) Quantity
0 PTP-10B Laser Grade Penta Prism BK7A 10 -
1 PTP-12.7B Laser Grade Penta Prism BK7A 12.7 -
2 PTP-15B Laser Grade Penta Prism BK7A 15 -
3 PTP-20B Laser Grade Penta Prism BK7A 20 -
4 PTP-25.4B Laser Grade Penta Prism BK7A 25.4 -
5 PTP-40B Laser Grade Penta Prism BK7A 40 -