Penta Prism

BRD Optical co. Ltdis one of professional optical component manufacturers. We provide Plano Concave Cylindrical Lens, Plano Convex Cylindrical Lens, short pass optical filter, optical filter design, optical flat filter, tunable filters in optical communicationand so on. Want to know about optical filter design and analysisand optical filter film? Please conatct us.

Pentagonal prism is the beam Angle (90 °), one of the steering gear.It has two purposes: one is that no matter how much the first incident Angle on the side is the emergent light incident light steering Angle (90 °);The other is that, unlike a rectangular prism, the resulting image has neither rotation nor specular reflection.Penta prism in camerais commonly used in camera viewfinders, image observation systems or measuring instruments. We also offer roof penta prismand half penta prism,which all can used to in Penta prism camera.

Description Of Penta Prism

Characteristics of pentagonal prism is a 90 ° Angle of the light became a vertical incidence, and then after the 45 ° Angle of two surface reflection, from the Angle of 90 ° exit, on the other side of the incident light and emergent light is equal to 90 ° Angle, such application pentagonal prism can turn axis around 90 °. Recently, the use of the characteristics of a pentagonal optical prism measurement [1] the planarity of the Pacific Ocean, namely the pentagonal prism rotates around the horizontal axis for emergent light in the vertical plane sweep out a plane, and vice around the vertical axis rotation, can be measured in horizontal plane, when using laser as light source, because the laser range far, you can sweep out a big plane, this for housing construction, large engineering construction of planar measurement obviously is simple and convenient and of high precision, so the pentagonal prism needs more and more.

Pentagonal prisms cannot achieve internal total reflection based on the critical-angle principle. Therefore, the two reflective surfaces of this prism are generally coated with aluminum film and black paint, and the incident and outgoing surfaces are coated with MgF2 single anti-reflective coating.

Specifications OfPenta Prism



Diameter Tolerance:


Angular Tolerance:



λ/4 @ 632.8nm

Surface Quality:


Clear Aperture:



<0.25mm X 45°


S1&S2: Single layer MgF2coating

S3&S4: Aluminized and painted black








Send product request

To: BRD Optical
Your E-mail:
Message text:

Send to other suppliers

Other supplier products

Filter The optical glass filter is an optical device used to select the desired radiation band. One of the common characteristics of filters is that there...
Bandpass Filter
Bandpass Filter BRD Opticalwas founded in 2004, and is located in the city of Changchun-the optic base of China with a beautiful view and profound optical culture....
Front Surface Mirror
Front Surface Mirror BRD Optical designs and mabufacturers optical mirror with high reflectance, which can double the output power of the laser; it is reflected by the ...
Double Concave Lens
Double Concave Lens A double concave lenshas negative focal length, thereby causing collimated incident light to diverge. Double concave lens has equal radius of curva...
Dashed Crosshairs
Dashed Crosshairs BRD Optical Co. Ltd. has state-of-the-art, modern technology machines for manufacturing and inspecting all kinds of precision optics. Our company o...
All supplier products

Same products

QSFP+ 40G LR4 10KM
QSFP+ 40G LR4 10KM Seller: T&S COMMUNICATIONS CO., LTD. QSFP+ 40G LR4 10KM The QSFP+ 40G-LR4-10km module is a highly integrated 4x10G transceiver focused...
QSFP28 100G SR4 100M
QSFP28 100G SR4 100M Seller: T&S COMMUNICATIONS CO., LTD. QSFP28 100G SR4 100M The QSFP28 100G-SR4-100m module is a highly integrated 4x25G transceiver foc...
 QSFP28 100G CWDM4 2K
QSFP28 100G CWDM4 2K Seller: T&S COMMUNICATIONS CO., LTD. QSFP28 100G CWDM4 2K The QSFP28 100G-CWDM4-2km module is a highly integrated 4x28G transceiver fo...
QSFP28 100G CWDM4 10KM
QSFP28 100G CWDM4 10KM Seller: T&S COMMUNICATIONS CO., LTD. QSFP28 100G CWDM4 10KM The QSFP28 100G-CWDM4-10km module is a highly integrated 4x28G transceiver...
PRE-TERMINATED MULTIFIBER CABLE Seller: T&S COMMUNICATIONS CO., LTD. PRE-TERMINATED MULTIFIBER CABLE Pre-terminated multifiber cableconsist of optical fiber cable ter...