DAVIDSON OPTRONICS Model D-633 Polygons

POLYGONS -- D-633

Whenever a circle or portion of a circle must be divided into very accurate equiangular parts, the Model D-633 Polygons may be used as the master reference; e.g., calibration of rotary tables, potentiometers and resolvers. Polygons are available having any number of faces up to 72.
Features:

Precise master reference

Fused quartz material ensures stability

Large reflective faces for autocollimation

Certification of accuracy traceable to National Institute of Standards and Technology

Model D-633 Polygons are very compact and light weight, reducing to a minimum any undesirable loading. The top surface of the polygon is polished to permit the user to autocollimate from this surface for precise positioning of the polygon axis.

Detailed Specifications for all Model D-633 Polygons:

Accuracy		±5 arc seconds. See Note 1
Calibration		1/10 arc second of actual angle with uncertainty of no more than ½ arc second. See Note 2
Flatness		1/5 fringe, each face
Surface Quality		80/50 per MIL-O-13830
Spindle Mounting Base		Flat to 0.000 050" and square to axis of polygon within 20 arc seconds
Material	Mirror	Fused Quartz
	Cover	Aluminum
	Base	Stainless Steel
Coating		Aluminum with protective overcoat per MIL-M-13508
Housing Finish		Ivory Enamel
Carrying Case		Ethafoam lined Finished Hardwood

NOTE 1: Angular dimensions for normals to reflecting surfaces are held to ±5 arc seconds. Pyramid error of any face with respect to other faces does not exceed 8 arc seconds. Polygons having higher accuracies are available.

NOTE 2: Calibration sheets are included giving readings between adjoining faces and from degrees to all faces. Calibration is valid when the faces are parallel to the axis of rotation within 10 arc seconds.

Detailed Specifications: for Model D-633-12 Polygons

Angle Between Faces 30 degrees

Mirror Dimensions Diameter 4-3/8"

Thickness 1"

Hole Diameter 1½"

Face Height 7/8"

Face Width 1-1/16"

Overall Dimensions Diameter 4¾"

Height 1¾"

Spindle Hole Diameter 4-9/64"

Mounting Base Diameter 2"

Height to Face Centers 7/8"

Polygon Weight 1¾ pounds

Shipping Weight 5 pounds

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

Angle Between Faces		30 degrees
Mirror Dimensions	Diameter	4-3/8"
	Thickness	1"
	Hole Diameter	1½"
	Face Height	7/8"
	Face Width	1-1/16"
Overall Dimensions	Diameter	4¾"
	Height	1¾"
	Spindle Hole Diameter	4-9/64"
	Mounting Base Diameter	2"
	Height to Face Centers	7/8"
Polygon Weight		1¾ pounds
Shipping Weight		5 pounds