Dove prizmės
Dove prizmės
| BK7, UVFS
|
| +0/-0,2mm
|
| < 3arcmin
|
| < λ / 2 @ 633 nm
|
| 60-40 scratch and dig
|
| +/- 0.2 mm
|
| >80% |
Dove prisms are shaped from a truncated right-angle prism. A beam of light 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, and because only one reflection takes place, the image's handedness is changed to the opposite sense. Dove prisms have an interesting property - when they are rotated along their longitudinal axis, the transmitted image rotates at twice the rate of the prism. It is very important that the application must be used with parallel or collimated beam and the large square reflective surface should be kept very clean. Another application is used as a retroreflector. For this application it performs as a right-angle prism.
| Altechna metrology lab applies following product inspection: |
| Visual inspection – surface quality evaluation according to MIL 13830 and ISO 10110 standards |
| Dimensions – measurement of geometrical dimensions, as diameter, thickness, etc. |
| Angle (Goniometer)* |
| Pyramidal error (Goniometer) |
*(…) used equipment
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