ISP Optics GE-W-25-2 Germanium Infrared Window
Diameter: 25mm
Thisckness: 2mm
Specifications:
– Dia tolerance: +0, -0.005″(+0, -0.13mm)
– Th tolerance: �0.005� (�0.13mm)
– Clear Aperture: 85%
– Parallelism: 3 arc min
– Flatness: 1/10 wave at 10.6 um
– Surface Finish: 40/20

***MPN GE-W-25-2
***OEM ISP Optics
***SKU*** 28028

Sodium Chloride crystal window, 50mm long, 25mm wide, and 6mm thick. Crystal is sealed in plastic bag (two desiccant tubes in bag). Crystal is wrapped in tissue and could not be examined without opening. Like most salt windows, it should be assumed that this may need to be repolished. This lot consists of one crystal window.

Material � NaCl
Dimensions 50mm x 25mm
Thickness � 6mm
Focal Length � flat window
Surface finish � could not evaluate � crystal wrapped in tissue inside sealed bag.
Container � sealed plastic with paired desiccant tubes inside

***MPN
***OEM
***SKU*** DP389

Sodium Chloride window, 36mm in diameter, 9mm thick. There is a significant fracture on one edge of the crystal approximately 14mm wide, and extending about 6mm from the edge. You will probably wish to repolish one side. Window was in unsealed bag with desiccant. Part number on padded envelope is #03609.

Material � NaCl
Diameter � 36mm
Thickness � 9mm
Focal Length � flat window
Surface finish � very lightly etched on one side, other side appears blemish-free
Container � cotton-padded cloth sleeve pouch with desiccant container.

***MPN
***OEM
***SKU*** DP386

This is a very large sodium chloride crystal window. Crystal has been bumped � there is a significant fracture in one corner that extends approximately 6mm diagonally into the plate, otherwise the window appears unflawed. This lot consists of one crystal window.

Material � NaCl
Dimensions 50mm x 40mm
Thickness 20mm
Focal Length � flat window
Surface finish � visually perfect � significant flaw in one corner (see photo)
Container � sealed plastic bag without desiccant

***MPN
***OEM
***SKU*** DP385

This is a quantity of three sodium chloride windows. All of the windows show some adhesion to the tissue that wrapped them, one a bit worse than the others. They will need to be repolished both sides.

Material � NaCl
Dimensions 38mm x 19mm
Thickness 4mm
Focal Length � flat window
Surface finish � moderately etched
Container � plastic bag individually wrapped in tissue, without desiccant

***MPN
***OEM
***SKU*** DP382

This lot consists of two windows of an unknown salt crystal. They are suspended inside fiberboard tubes by slightly smaller tubes inserted into either side of the larger tube. I did not wish to remove the tubes, so I can only guess at the thickness, being on the order of 0.15 to 0.25 inches. The diameter is less than 1.6 inches, and may be as small as 1.550 inches. The crystal windows are in excellent condition � I could not detect any degradation. The outer tubes are lined with desiccant packages. There appear to be two identical windows � unfortunately, no markings as to compound, or dimensions. Listing includes both pieces.

Material � Unknown
Diameter 1.6 inches
Thickness 0.15 � 0.25 inches
Focal Length � flat window
Surface finish � visually excellent

***MPN
***OEM
***SKU*** DP381

This is a large window of an unknown salt crystal.

Material � Unknown
Diameter = 2.158 inches
Thickness = 0.25 inches
Focal Length � flat window
Surface finish � visually superb
Container � tissue wrap without desiccant

Location MB 112
Photo set 814.

Salt window only.
Micrometer in photo is NOT included..

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