AN/PVS-7

Made by Litton Industries.

Collimator

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  PVS-7 collimator assembly, comprising of multiple lens and a triangular prism to duplicate intensifier image from one 10130 tube to both eyes

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  when disassembled, the following components, comprising of lenses and rings would pop out in the following order

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  for step 1, insert the lens with the convex side facing towards the collimator housing

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  for step 2, insert one of the thick metal ring into the collimator housing

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  for step 3, inset the thick lens, convex side facing towards the collimator housing

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  for step 4, [1] there will be three components needed to be placed together in a bundle

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  for step 4, [2], place the metal ring onto a flat surface for convenience

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  for step 4, [3], place the lens onto the metal ring with the convex side facing towards the metal ring

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  for step 4, [4] place the thin metal ring onto the lens

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  final results should look like the following with each component stacked according to their collerated numbers in [1]

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  for step 5, insert the fully stacked components in step 4 with the thin metal ring facing towards the collimator housing

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  for step 6, insert the final lens into the collimator housing with the convex side facing outward of the housing

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  for the final step, screw in the lock ring which helps to keep all the components in place securely