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Porro Prism

Porro prism is a type of reflection prism which can be used to alter the orientation of an image. Light enters the large face of the prism, then hits on the roof, by total internal reflection twice from the roof, the beam exits again through the large face. An image traveling through a Porro prism is rotated by 180° but not inverted.

Specification:

Material............................................................BK7 grade A optical glass

Dimension Tolerance................................................................±0.2mm

180° Deviation Tolerance.................................................see table below

Flatness.......................Reflecting Surfaces:λ/10,I/O surface:λ/8 @632.8nm

Wave distortion...............................................................λ/4 @632.8nm

Surface Quality.......................................................60-40 scratch and dig

Charmfer..........................................................................<0.5mm×45°

Coating................................................................................No Coating

P/NΦhDeviation
2050112.712.7<1"
2050225.425.4<1"
2050312.712.7<5"
2050425.425.4<5"
2050512.712.7<10"
2050625.425.4<10"
●Unit:mm
●Other sizes and coatings are available upon request.