1、- MIL-PRF-443bbB = 99999Ob 2020254 073 r I INCHPOUND I 29 April 1996 SUPERSEDING 23 April 1991 MIL-PRF-443 66B MIL-S-44366A PERFORMANCE SPECIFICATION SPECTACLES, PROTECTIVE, LASER, BALLISTIC (BLPS) This specification is approved for use by all Departments and Agencies of the Department of Defense. 1
2、. SCOPE 1.1 Scope. This specification covers the requirements for protective spectacles which provide ballistic and laser eye protection for individuals requiring corrected vision. 1.2 Classification. The spectacles will be of the following four classes as specified (see 6.2). Class 1 Clear, ballist
3、ic Class 2 Neutral gray, ballistic Class 3 Laser protective, two wavelength, ballistic Class 4 Laser protective, three wavelength, ballistic 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not includ
4、e documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and
5、4 of this specification, whether or not they are listed. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Defense Personnel Support Center, Clothing and Textiles Directorate, Attn: DPSC-FNS, 2800
6、 South 20th Street, Philadelphia, PA 19 145-5099, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC NIA FSC 8465 DISTRIBUTION STATEMENT A, Approved for public release; distribution is unlimited. Provided by IHSNot for R
7、esaleNo reproduction or networking permitted without license from IHS-,-,- 7 MIL-PRF-443bbB 99999Ob 2020255 TOT W MIL-PRF-44366B 2.2 Government documents 2.2.1 Specifications, standards. and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent
8、specified herein. Unless otherwise specified, the issues of the these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2.) STANDARDS FEDERAL A-A-55273 Retainer, Eyewear MILITAR
9、Y MIL-STD-662 V50 Ballistic Test for Armor (Unless otherwise indicated, copies of Federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, 700 Robbins Avenue, Building #4, Section D, Philadelphia, PA 191 11-5094.) 2.2.2 Other Governme
10、nt documents. drawings, and mblications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DRAWINGS U.S. ARMY NATICK RESEARCH, DEVELOPMENT, AND
11、ENGINEERING CENTER Drawing No. 2-1-21 92 - Ballistic Laser Eye Protective Spectacles Drawing No. 23394, FSCM 89875 - Prescription Lens Carrier Assembly (Copies of drawings are available from the U.S. Army Natick Research, Development, and Engineering Center, Natick, MA O 1760-5014.) 2.3 Non-Governme
12、nt Dublications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DoDISS cited in the solicitation. Unless otherwise specified, the issues of documen
13、ts not listed in the DoDISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM D 1003 - Standard Test Method For Haze and Luminous Transmittance of ASTM D 1044 - Standard Test Method For Resistance of Transparent Plastics to Su
14、rface Transparent Plastics Abrasion (Application for copies should be addressed to American Society for Testing and Materials, (ASTM), 1 O0 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) 2 Provided by IHSNot for ResaleNo reproduction or networking
15、permitted without license from IHS-,-,- - NIL-PRF-443bbB 97799Ob 2020256 74b MIL-PRF-44366B . ANSI-Z80.1 - Ophthalmics - Prescription Ophthalmic Lenses - Recommendations ANSI-Z80.3 - Ophthalmics - Nonprescription Sunglasses and Fashion Eyewear Requirements ANSI-Z87.1 - Practice for Occupational and
16、Educational Eye and Face Protection (Application for copies of ANSI publications should be addressed to ANSI, 11 West 42nd Street, New York, NY 10036.) (Non-Government standards and other publications are normally available from organizations that prepare or distribute the documents. These documents
17、 also may be available in or through 1ibr.aries or other informational services.) 2.4 Order of mecedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable
18、 laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection (see 6.3) as specified in 4.2. 3.2 Ballistic laser Drotective sDectacles (BLPS) definition. The BLPS shall consist
19、 of spectacles, either clear (class i), neutral gray (class 2), two wavelength laser protective (class 3), or three wavelength laser protective (class 4) as specified (see 6.2), a carrying case, an instruction booklet, and a retaining strap. 3.3 Recycled, recovered. or environmentally meferable mate
20、rials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.4 Design and construction. The protec
21、tive spectacles provide ballistic and laser eye protection for individuals requiring corrected vision. The ballistic protection is provided by the one-size-fits-all design eyewrap. Class 3 spectacles shall provide laser protection at 694.3 nm (ruby laser wavelength) and at 1064 nm (neodymium laser w
22、avelength). Class 4 spectacles shall provide laser protection at 694.3 nm, at 1064 nm, and at 532 nm (frequency doubled neodymium laser wavelength). The BLPS shall be compatible with the military prescription lens carrier. See drawing 23394, FSCM 89875. 3.4.1 Protective mectacle (all classes). The s
23、pectacles shall allow binocular vision and provide impact resistance. The finished parts shall be free of sharp edges which could result in discomfort or abrasion to the face. The spectacles shall permit a snug and smooth operating fit when the mounting nosepiece is sn pped into place. The nosepiece
24、 and temples male military population. shall be adjustable to accommodate fitting the 5 ill percentile female to the 95th percentile 3.4.2 Temple. The mating barrels of the hinge portions of the temple and the spectacle shall form a slip fit. The temples shall maintain adjustments made during the in
25、itial fitting. The temples shall have a bronze color and shall have a glossy finish. 3.4.3 Nosepiece. The nosepiece shall lock securely to the nose bridge of the spectacle but may be removed when necessary. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
26、HS-,-,-MIL-PRF-44366B . 3.4.4 Hinae Din. The hinge pin shall fit snugly in the hinge to hold the temple without vertical wobble in the as-worn position. 3.4.5 Evewear Retainer. The eyewear retainer shall fit snugly over the free ends of the temple and shall stay in place once adjusted. Eyewear retai
27、ner shall be made as specified in A-A-55273. 3.4.6 Carrvina case. A hard plastic vertical carrying case, which shall have good performance characteristics between -40F and +135“F, shall be mildew resistant and shall incorporate ultraviolet inhibiters. The carrying case shall be provided with drain h
28、oles. The carrying case shall minimize dirt infiltration and scratching of lenses. The carrying case shall contain the spectacles in such a way that the optical surface of the lens is not permitted to rub against the inside of the case. Carrying case shall be olive green in color and shall be non- r
29、eflective; it shall attach to a soldiers equipment belt and shall not exceed 4 ounces in weight. 3.4.7 Instruction Booklet. The instruction booklet shall be small enough to enable packing in the BLPS carrying case with components as specified in 3.2. A standard sample of the instruction booklet shal
30、l be furnished (see 6.6). 3.5 Performance requirements 3.5.1 Mechanical 3.5.1.1 Ballistic resistance. The ballistic resistance of the spectacles shall be such that they will pass a Vo test using a 0.15 caliber, 5.8 grain, T37 shaped projectile at a velocity of 640 to 660 feet per second when tested
31、as specified in 4.4.1.1. 3.5.1.2 Abrasion resistance. The percent haze gain of the spectacles shall not exceed 6 percent when tested as specified in 4.4.1.2. 3.5.2 ODtical 3.5.2.1 Prismatic deviation. The vertical prism shall not be greater than 0.18 prism diopters for either eye nor shall the algeb
32、raic difference of the vertical prism for the left and right eyes be greater than O. 18 prism diopters. The algebraic sum of the horizontal prism for the left and right eyes shall be not greater than 0.50 prism diopters, and the algebraic difference for the horizontal prism for the left and right ey
33、es shall not be greater than O. 18 diopters when tested as specified in 4.4.2.1. 3.5.2.2 Power. The refractive power of the spectacles shall not exceed 0.0625 diopter when tested as specified in 4.4.2;2. 3.5.2.3 Optical distortion. The spectacles shall be free of optical distortion when tested as sp
34、ecified in 4.4.2.3. 3.5.2.4 Astipmatism. The maximum degree of astigmatism in the spectacles shall not exceed 1/16 diopter when tested as specified in 4.4.2.4. 3.5.2.5 Ultraviolet absorption. The spectacles shall absorb at least 90 percent of the incident ultraviolet radiation in the range 290 to 38
35、0 nm when tested as specified in 4.4.2.5. 3.5.2.6 High energy laser optical density for class 3 sDectacles. The optical portion of the class 3, laser protective spectacles shall yield optical densities equal to or greater than 4 at 694.3 nm (ruby laser wavelength) and 4 at 1064 nm (Nd:YAG laser wave
36、length) for laser 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EIL-PKF-443bbB 7999906 2020258 7L9 MIL-PRF-44366B radiation incident normal to the surface of the spectacles, with any polarization state, when tested against laser radiation having
37、a radiant exposure of 20 milliJoules per square centimeter for Q-switched emissions less than 40 nanoseconds and greater than 1 nanosecond when tested as specified in 4.4.2.6. 3.5.2.7 High energy laser optical density for class 4 wectacles. The optical portion of the class 4, laser protective specta
38、cles shall yield optical densities equal to or greater than 4 at 532 nm (frequency doubled Nd:YAG laser wavelength), 4 at 694.3 nm (ruby laser wavelength) and 4 at 1064 nm (Nd:YAG laser wavelength) for laser radiation incident normal to the surface of the spectacles, with any polarization state, whe
39、n tested against laser radiation having a radiant exposure of 20 milliJoules per square centimeter for Q-switched emissions less than 40 nanoseconds and greater than 1 nanosecond when tested as specified in 4.4.2.6. 3.5.2.8 Luminous transmittance (class 1). The photopic luminous transmittance (for t
40、he light adapted eye) for the class 1 spectacles shall not be less than 89 percent when tested as specified in 4.4.2.7. 3.5.2.9 Luminous transmittance (class 2). The luminous transmittance of the class 2 spectacle shall be within 12 to 18 percent, and the total visible transmittance shall not vary m
41、ore than 3.0 percent when tested as specified in 4.4.2.8. 3.5.2.10 Luminous transmittance (class 31. The scotopic and photopic luminous transmittance shall be not less than 40 percent when tested as specified in 4.4.2.7. 3.5.2.1 O. 1 Luminous transmittance (class 3) for P43 DhosDhor. The photopic lu
42、minous transmittance of the class 3 spectacle shall be not less than 40 percent when the source spectral emission is that of the P43 phosphor, when tested as specified in 4.4.2.7. 3.5.2.1 1 Luminous transmittance (class 41. The photopic luminous transmittance of the class 4 spectacle shall not be le
43、ss than 12 percent when tested as specified in 4.4.2.7. 3 52.1 1.1 Luminous transmittance (class 4) for P43 phomhor. The photgpic luminous transmittance of the class 4 spectacle shall not be less than 9 percent when the source spectral emission is that of the P43 phosphor, when tested as specified i
44、n 4.4.2.7. 3.5.2.12 Neutrality (class 21. The spectral transmittance of the class 2 lens may vary with wave lengths between 430and 730 nm, the average percentage deviation within nine spectral bands shall be less than 12 when tested as specified in 4.4.2.9. The spectral distribution curve shall show
45、 a reasonably even distribution throughout the visible spectrum to insure that the color distortion will not be excessive. 3.5.2.13 Chromaticity (class 2). The chromaticity coordinates x and y of the class 2 lenses shall be within the limits indicated in figure 2 when computed as specified in 4.4.2.
46、10. 3.5.2.14 Haze. The haze of the spectacles shall be less than 3 percent when tested as specified in 4.4.2.1 1. 3 S.3 Environmental 3.5.3.1 Chemical resistance. The spectacles shall.be resistant to attack from chemicals including, but not limited to, the following: Insect repellent, controlled rel
47、ease (DEET) Combat vehicle fluid (Dexron) 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Gasoline Motor oil JF% aircraft fuel when tested as specified in 4.4.3.1. Class 3 and class 4 spectacles shall meet the requirements for optical density and l
48、uminous transmittance after testing. 3.5.3.2 Temperature. The spectacles shall not be visibly degraded following exposure for 72 hours at 1600F and 72 hours at -60F 3OF when tested as specified in 4.4.3.2. Class 3 and class 4 spectacles shall meet the requirements for optical density and luminous tr
49、ansmittance after testing. 3.5.3.3 Solar radiation. The spectacles shall not be visibly degraded when tested against 60 hours of simulated solar radiation as specified in 4.4.3.3. Class 3 and class 4 spectacles shall meet the requirements for optical density and luminous transmittance after testing. 3.5.3.4 Humiditv. The spectacles shall not be visibly degraded after exposure to 10 cycles for a combined total of 240 hours of temperature and humidity when tested as specified
