Inverting and dispersing prisms
Description
Both the Amici and Porro prisms invert the image and are commonly used in telescopes and binoculars. The equilateral and Pellin-Broca prisms both disperse the spectrum, the equilateral producing a fan of rays of different wavelengths, while for the Pellin-Broca ‘constant deviation’ prism the output is always taken at 90° to the input with the wavelength varying as the prism is rotated: very convenient for monochromator use.
| Item code | Prism type | Aperture (mm) | Material | nd | Vd | Inverting/Dispersing | Price per item (£ GBP) |
Stock available | Volume discount available |
Datasheets & customisation options |
Select amount |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 11 JE 15 | Pellin-Broca | 27 x 15 exit face (w x h) | UV-silica | 1.458 | 67.7 | Dispersing | £148.47 | ||||
| 04 JE 40 | Equilateral | 40 x 40 | F2 | 1.62 | 36.4 | Dispersing | £90.87 | ||||
| 04 JE 25 | Equilateral | 25 x 25 | F2 | 1.62 | 36.4 | Dispersing | £58.56 | ||||
| 03 JE 16 | Equilateral | 16 x 16 | SF11 | 1.785 | 25.8 | Dispersing | £60.14 | ||||
| 01 JE 16 | Equilateral | 16 x 16 | UV-silica | 1.458 | 67.7 | Dispersing | £109.38 | ||||
| 02 JM 20 | Porro | 20 dia. | BaK4 | 1.569 | 56.1 | Inverting | £46.22 | ||||
| 01 JM 23 | Amici | 23 dia. | BK7 | 1.517 | 64.2 | Inverting | £103.09 | ||||
For more information regarding stock availability icons, please see our shipping page.

