DAVIDSON OPTRONICS Model D-274 12" Diameter Off-Axis Reflective Lens Bench

12" DIAMETER OFF-AXIS REFLECTIVE LENS BENCH -- D-274

Model D-274 12
The Model D-274 12" Off-Axis Reflective Lens Bench is an extremely stable, multi-purpose instrument for testing optical systems and lenses from the visual spectrum through the InfraRed wavelength region.
The bench consists of a reflective collimator that emits an unobstructed 12" diameter light beam, a railbed for transporting roller bearing mounted carriages and a large roller bearing carriage.
The light beam projected parallel to the rails has a maximum deviation of 2 arc seconds over the entire field.

Detailed Specifications:

Flat Surface Mirrors		Upper & lower, 20" diameter, 3" thick & flat to 1/5 fringe
Coating		Aluminum with protective overcoat per MIL-M-13508
Collimated Beam		12" diameter usable aperture with no obscuration collimated over the entire field of view to <2 arc seconds
Overall Dimensions	Height	67-7/16"
	Width	22"
	Length	155¼"
Rails	Long	130½"
Rails	Flat and Straight	0.010"
Large carriage	Length	30"
Large carriage	Width	20"
Shipping Weight		Approximately 5,300 pounds

Model D-170 Light Chopper

Optional Accessories:
- The Model D-170 Light Chopper has a variable speed motor with equally spaced slits. The aperture disc, a 4" diameter, 1/8" thick aluminum disc containing equally spaced ½" holes on a 2.5" diameter bolt circle. Inserted in these holes are pinhole adapters, having the following hole sizes: 0.002", 0.004", 0.006", 0.012", 0.024", and 0.060" diameter. The condenser Light Source contains sapphire lenses for infrared and visible wavelength operation - range 0.35 to 15 microns.
- P/N 105-211 Left & P/N 105-0212 Right Side by Side 9-3/8" x 18" Small Carriages
- P/N 108-0063 Microscope & T-bar Assembly is mounted on an Azimuth and Elevation adjustable stand attached to the extreme end of the bench. The T-Bar is mounted in the optional cross slide - rotary table compound. The microscope is used for observing and testing lenses and related optics. The T-Bar is designed to provide a means of precisely positioning the test lens during testing.
- P/N 535-0052 Cross Slide
- P/N 580-0015 Rotary Table

Optional Alignment Equipment:
- Model D-247 Table Instrument Stand
- Model D-275 Autocollimating Alignment Telescope
- Model D-276 Adjustable Instrument Stand
- Model D-277 Adjustable Instrument Stand
- Model D-295 Adjustable Instrument Stand
- Model D-569 12" Diameter Adjustable Reference Mirror

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