DAVIDSON OPTRONICS Model D-691 Laser Alignment Autocollimator

LASER ALIGNMENT AUTOCOLLIMATOR -- D-691

The Model D-691 Laser Alignment Autocollimator provides industry with an autocollimator economical enough to permanently install in deliverable laser systems or for use as a Laser Alignment Autocollimator in house. The instrument incorporates such features as wide angle field of view (one degree), average nulling sensitivity of 5 arc seconds, autocollimates from small reflectors and comes complete with a power pack.
Features:

Economical cost permits permanent installation in laser fixtures

Monitors alignment of laser systems

Full degree wide field

5 arc seconds nulling sensitivity

Introduction:
The Model D-691 is designed to provide an accurate and convenient means od determining angular deviation of an external reflector, simultaneously in azimuth and elevation. The D-691 is readily adaptable to any situation requiring an accurate and extremely compact designed instrument to monitor deviations of external reflectors. Deviation from an initial setting are determined at a glance by sighting through the eyepiece and noting the related positions of the straight through and right angle reticles.
D-691 Laser alignment autocollimator
For theory of operation, please refer to the Principles of Autocollimation Application Note.

Detailed Specifications:

Sensitivity		Nulls to 5 arc seconds
Measuring range		1° at 3 feet (1 m) ±4 arc minutes at 20 feet (6 m)
Aperture Diameter		0.9 Inch (23 mm)
Eyepiece Magnification		12X (24X available)
Focal Length		5 Inch (127 mm)
Eyepiece Reticle		3 arc second wide crosshair
Projected Reticle		Dark field with 50 arc second diameter bright dot
Light Source		GE #328 lamp (2 spares included)
115V Power Supply		Model D-422 6 volts DC
Barrel Material		Hardened and polished Stainless Steel
Overall Dimensions	Barrel Diameter	1.500 +.000/-.002 Inch (38.05 - 38.10 mm) concentric to optical axis
	Height	2.12 Inch (54 mm)
	Length	7½ Inch (190 mm)
Instrument Weight		2 pounds (0.9 kg)
Shipping Weight		4 pounds (1.8 kg)

Optional Accessories:

Model D-165 High Intensity Light Source. This option may be required when autocollimating off of low reflectivity surfaces or small mirrors.
Model D-212 Adjustable Stand
P/N 105-2761-691 Video Camera & Monitor with integral camera power supply. With this option readings become very easy even for unskilled personnel. Repeat readings are more accurate and faster. The camera eliminates any errors from parallax and greatly reduces eye fatigue. This option is easily added to existing Model D-691's.

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