MIL-PRF-13830B
3.8.2.5.2 Shock. All completed subassemblies in which an optical element is
physically supported from another part or parts by a glass to metal bond shall be
subjected to the shock test.
3.8.2.5.3 Cleanliness. The optical surface of completed instruments shall be clean
and free of condensates and volatile substances when examined by method specified in
4.2.10.9. Dust retention grease shall not be used except with specific authorization of
the responsible technical activity.
3.8.2.5.4 Parallax. Parallax shall be removed where specified in 4.2.10.4.
3.8.2.5.5 Fixed eyepiece focus. Unless otherwise specified the reticle at the center
of the field shall be in sharp focus when the eyepiece is set between minus 0.75 and
minus 1.0 diopter. A calibrated dioptometer with a magnification of at least 3 power or
an equivalent auxiliary telescope shall be used to make this setting.
4. VERIFICATION
4.1 General provisions. Unless otherwise specified in the contract or purchase
order, the supplier is responsible for the performance of all inspection requirements as
specified herein. Except as otherwise specified, the supplier may utilize his own
facilities or any commercial laboratory acceptable to the Government. The Government
reserves the right to perform any of the inspections set forth in the specification where
such inspections are deemed necessary to assure supplies and services conform to
prescribed requirements.
4.1.1 Examination and tests.
a. Classification of characteristics. Conformance examinations and tests are
specified in the item specification's Classification of Characteristics paragraphs. The
contractor's quality program or detailed inspection system will provide assurance of
compliance of all characteristics with the applicable drawing and specification
requirements utilizing, as a minimum, the conformance criteria specified. Unless
otherwise cited in the contract or item specification, attributes sampling inspection
shall be conducted in accordance with TABLE II below, using the inspection levels
stated in the Classification of Characteristics paragraphs of the item specification.
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