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ALIGNMENT COLLIMATOR -- D-279

The 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.

Model D-279 Alignment Collimator

  • Features:
    • Optical line of sight testing
    • Straightness of focusable optical Instruments
    • Infinity target
    • Bench mark
    • Certification of accuracy traceable to National Institute of Standards and Technology

Six filar-bifilar type reticles provide alignment targets at different distances from the collimator objective.  The virtual image distance of each reticle (0", 8", 16", 32" & 64") is inscribed in 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 of
barrel outside diameter
Dust Prevention Front zero reticle & rear filter seals
Light Source Adapter Standard 2"- 24 N.S. Threads
Aperture 1-11/32"
Focal Length 14.3"
Material Timken 52100 Stock Tubing #23
Overall Dimensions Length 13.36"
Diameter 2.2497" ±0.000 1"
concentric to optical axis
Finish Polished Chrome Plate
Carrying Case Finished Hardwood, Ethafoam
fitted for instrument and light source
Instrument Weight 12 pounds
Shipping Weight 20 pounds

Davidson Optronics, Inc.
Phone: (626) 962-5181
Fax: (626) 962-5188
E-mail: sales@davidsonoptronics.com