MIL-C-14^06A fTOTICT 1 15 May 1987 MIUTARY SPECIFICATION C0A7MG, RRFLROLOfJ RED'ICLCr KM INSTRUMENT COV'BR CrLASOTS AIID LIG-HTTWG- tfpDG. MIL-C-14806A dated 1 May 1974, has been reviewed and determined to be valid for use in acquisition. Custodians: Amry - AR Preparing activity: Aray - AR Navy - A3 Air Force - 11 Review aetLvitien: Array - AV Navy - 03 Air Force - 99 User acJ;ivities: Aroy - MI AMT硫C N/A t^oG 6650 DISTRIBUTION S^AT^MFNT A. Approved for public rel*aoe; distribution is unlimited.

MIL-C-14806A AMENDMENT 2 1 May 1974 SUPERSED1NG AMENDMENT 1 14 December 1973 MILITARY SPECIFICATION COATING, REFLECTION REDUCING, FOR INSTRUMENT COVER GLASSES AND LIGHTING WEDGES This amendment forms a part of Military Spcification MIL-C-14806A, dated 12 June 1969 and is approved for use by ail Departments and Agencies of the Department of Dfense. Paragraph 3.4: Delete and substitute: "3.4 Specular r驩flectance.- When applied to substrate materials having indices of refraction within the range of 1.47-1.55 the specular rflectance from each coated surface shall not exceed the following limits for...

/wIL-C-l^ftU AjMpNDMENf 2 Custodtans: Army - MU Navy - AS Air Force - 11 Preparing activity: Army - MU Project No. 665Q-0081 Review activities: Army - MU, AV Navy - AS, OS Air Force - 11, 17, 71 User activities: Army - WC, MI Navy - SH Air Force - None DSA - DM

M1L-C-14606A 12 June 1969 SUPERSEDINC MlL-C-14b06 27 Mav 1966 MILITARY S PL CI FI CAT I ON COATING, REFLECTION REDUCING, FOR INSTRUMENT COVLR GLASSES AND LIGETINC WLDGES This spcification is r.audatory for use by ail Departments and Agencies of the Department of Dfense. 1. SCOPE 1.1 This sp驩cification covers reflection reducing coatings applied to substrate material having indices of refraction within the range of 1.47 to 1.55 to be used as instrument cover glasses and lighting wedges herein referred to as optical lments. 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect...

MlL-C-I4b0t>A 3, REQUIREMEN S 3,1 Optical terres _ajv^ uef iniLj ors . - fer.":- and f in icior.s peculiar te the gϪnerai fitid of crtics «s ..Օ.«uni hre- ; :■. p.ro v.u :;-.irc i". M裏L-$'<>-1241. 2.2 CGϣUea___area. - Lniess otherwise specifi eu . orti^al lments suai! be coatea over their ej.tir-j effective arertt.re oxeert for an allowable uncoatec holding area as shown in the table below. Diameter or Maximum Oiagonal Dimension of Optical El驩ment Max Width cf Uncoated Area 0 - 1.5" 0.030" 1.5 - 2.5' G.OW 2.5 - 3.5" 0.050" 3.5 - 5.0" 0.060" 3.0 - 7,0" 0.100" 3-3 Cemented and bonded surfaces.-...

MIL-C-14806A 3.6.3 The coating shall show no vidence of a cloudy or hazy appearance. 3.6.4 Unless otherwise specified, the coating shall meet the following scratch and dig requirements. Coating defects shall be counted in addition to those allowed by the substrate spcification. Lighting wedges or light pipinp glass Cover glass for lighted instruments Cover glass for unlighted instruments 40-20 per MIL-O-13830 60-20 per MIL-O-13830 80-50 per MIL-O-13830 Coating spatter shall be counted as a dig or inclusion. 3.6.5 Pinholes in the coated surface shall not exceed twice the allowable dig size. Unless...

MIL-C-14806A 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.- Unless otherwise specified in the contract or purchase order, tl.e supplier is responsible for the performance of ail inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the spcification where such inspections are deemed necessary...

MIL-C-14ro6a COATIMG, RRPLrXTtOfl RRHUCLf) FOR INSTRUMENT GOvrSR CLASSES AND LIGHTING TOGSS MIL-C-14806A dated 1 May 1974, has been reviewed and determined to be valid for use in acquisition. Custodians: Ar~ry - AU Preparing activity: ray - AR Navy - AS Air Force - 11 Review activitieo: Array - AV Navy - 03 Air Force - 99 User a<r;ivities: Aray - MI AMSO N/A fsc 6650 DISTRIBUTION S^ATFMFNT A. Approved for public relense; distribution is unlimited.

MIL-C-1486A 4.3.1.2 Submission of product.- Unless otherwise specified by the contracting officer, inspection lot size, lot formation, and pr۩sentation of lots shall be in accordance with "Submission of Product" provisions in MIL-STD-105. A lot will be considered to be a shipning lot (see 6.5). TABLE II - CLASSIFICATION OF DEFECTS Level II of Table I with Sampline Plan Table IIA of MIL-STD-105 Class Requirement Test Paragraph Critical: None Major: AQL 1.0% defective 101. Coated Area 3.2 4.4.1 102. Cemented and Bonded Surfaces 3.3 4.4.2 103. Coating Quality 3.6 4.4.3.1, 4.4.3.3, 4.4.3.4, 4.4.3.5...

MIL-C-14806A 4.4.2 Cemented and bonded surfaces.- Ccated area shall be visually examined to dtermine conformance to 3.3. 4.4.3 Coating quality.- Cocted surfaces shall be examined for conformance to 3.5 as follows: 4.4.3.1 The coating shall be examined by botii transmission and reflection for vidence of fiaking, peeling or blisterir.g. The test method is as shown in Figure I-b. Such 驩vidence shall be cause fer rejection, 4.4.3.2 The coating shall be examined by both transnission and reflection for vidence of discoloration, stains, streaks, or smears. The test method is as shown in Figure I-b....

MIL-C-14806A 4.4.7 Abrasion.- The coating shall be tested by rubbing the coated surface with a standard eraser conforming to MIL-E-12397 mounted in the holding device. A force of between 2 and 2 1/2 lbs. shall be applied. Strok.es of approximately one inch shall be made if the size of the lment pennits; stnaller strokes for snaller 驩lments. Ail strokes shall be made on one path for twenty strokes. After completion of this test, the parts shall be evaluated for conformance to 3.6.1. 4.4.8 Sait fog.- The coatings shall be tested as specified in MIL-STD-810, Method 509-1. After completion of this...