ALIGNMENT COLLIMATOR -- D-279The Model D-279 Alignment Collimator is an optical line of sight testing fixture and target, utilized primarily as a means of testing the straightness of the line of sight of focusable optical instruments. In addition, the Model D-279 may be utilized as an infinity target or bench mark for calibrating focused instruments.
Six filar-bifilar type reticles provide alignment targets at different distances from the collimator objective. The virtual image distance of each reticle (0 Inch, 8 Inch, 16 Inch, 32 Inch & 64 Inch) (0 mm, 203.2 mm, 406.4 mm, 812.8 mm & 1.625 m) is inscribed in inches on the first quadrant of that reticle. The infinity reticle has the additional feature of a stadia scale with graduations equal to 1 minute ±2 arc seconds. |
Detailed Specifications:
| Reticles | Alignment | within 5 arc minutes |
| Concentricity | within 0.001 inch (25 μm) of
barrel outside diameter |
|
| Dust Prevention | Front zero reticle & rear filter seals | |
| Light Source Adapter | Standard 2 Inch-24 N.S. Threads | |
| Aperture | 1-11/32 Inch (34 mm) | |
| Focal Length | 14.3 Inch (363 mm) | |
| Material | Timken 52100 Stock Tubing #23 | |
| Overall Dimensions | Length | 13.36 Inch (339 mm) |
| Diameter | 2.249 7±0.000 1 Inch (57.140 - 57.145 mm)
concentric to optical axis | |
| Finish | Polished Chrome Plate | |
| Carrying Case | Finished Hardwood, Ethafoam
fitted for instrument and light source |
|
| Instrument Weight | 12 pounds (5.4 kg) | |
| Shipping Weight | 20 pounds (9.1 kg) | |
Davidson Optronics, Inc.
Phone: (626) 962-5181
Fax: (626) 962-5188
E-mail: sales@davidsonoptronics.com
