BK7 Optical Glass Dove Prism
A Dove prism is a type of reflective prism which is used to invert
an image. Dove prisms are shaped from a truncated right-angle
prism. The Dove prism is named for its inventor, Heinrich Wilhelm
Dove.
A beam of light travelling parallel to the longitudinal axis,
entering one of the sloped faces of the prism undergoes total
internal reflection from the inside of the longest (bottom) face
and emerges from the opposite sloped face. Images passing through
the prism are flipped (mirrored), and because only one reflection
takes place, the image is also inverted but not laterally
transposed.
Refraction at the entrance and exit surfaces results in substantial
image astigmatism when used in convergent light. Thus the Dove
prism is used almost exclusively for images appearing at infinity.
If the flat hypotenuse surface of a Dove prism is cut into a roof
shape, the result is an Amici roof prism.
A reflection in one axis of a plane is always equivalent to a
reflection and rotation in two other axes (with the angle between
the source and image being twice the angle between the source and
reflection axis of the prism). Thus, Dove prisms can be used to
create beam rotators, which have applications in fields such as
interferometry, astronomy, and pattern recognition.
Lesso and Padgett (1999) and Moreno et al. (2003, 2004) found that
there is a change in the state of polarization of a beam of light
on passing through a rotated dove prism. Polarization rotation in
the infrared has been known for much longer. (Johnston 1977) The
polarization-transforming properties of dove prisms are of
particular interest because they can influence the signal
measurement of the scientific instrument.
In general, the surface A, surface C and surface D need polishing.
But if you need other surface polishing, please advise.
Production Line
Optical Properties of Dove Prisms
| Material | BK7 or K9 |
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance | ±0.1 mm |
| Surface Quality | 60-40 Scratch-Dig |
Surface Flatness
(Plano Side) | λ/2 at 633nm |
Surface Irregularity
(Peak to Valley) | λ/2 at 633nm |
| Angle tolerance | 3 arcmin (5 seconds according to customer requirements) |
| Design Wavelength | 546nm |
What's the way of shipping?
We accept DHL, Fedex, TNT, UPS, SF, EMS etc. If you have your own
express account, it's great.
How to pay?
(1) T/T, PayPal, West Union,etc
(2) Bank Fee: West Union-USD30.00(≤USD3000.00),
T/T-USD20.00+, PayPal-5%. Please consult the local bank.
What's the deliver time?
For inventory: the delivery time is around 5 workdays.
Customized products: the delivery time is 10 to 30 workdays.
According to the quantity and precision.
Can I customize the products based on my need?
Yes, we can customize the material, specifications and optical
coating for your optical components based on your needs. OEM is
available.
