1、MIL-PRF-33033 9999906 2039474 T40 C I INCH-POUND 25 Auril 1996 MIL-PRF-3 1 O 13 PERFORMANCE SPECIFICATION SPECTACLES, SPECIAL PROTECTIVE EYEWEAR CYLINDRICAL SYSTEM (SPECS) This specification is approved for use by all departments and agencies of the Department of De- fense. 1. SCOPE 1.1 Scope. This
2、specification covers the requirements for a special protective eyewear cylindri- cal system (SPECS) to provide ballistic and laser eye protection. 1.2 Classification. The lenses shall be of the following four classes as specified (see 6.2). Class 1 Clear, ballistic Class 2 Neutral gray, ballistic Cl
3、ass 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 specifi- cation. This section does not include documents cited in other sections
4、 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 speci- fied requirements documents cited in sections 3 and 4 of this specification, whether
5、or not they are listed. 2.2 Government documents 2.2.1 Swcifications. standards, and handbooks. The following specifications, standards and handbooks form a part of this document to the extent specified herein. Unless otherwise speci- fied, the issues of these documents are those listed in the issue
6、 of the Department of Defense In- dex of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2). Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Defens
7、e Personnel Support Center, Clothing and Textiles Directorate, Attn: DPSC-FNS, 2800 South 20th Street, Philadelphia, PA 19145-5099, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 8465 DISTRIBUTION STATEMENT A
8、. Approved for public release; distribution is unlimited. Licensed by Information Handling ServicesMIL-PRF-33033 m 9999906 2039475 987 m MIL-PRF-31013 . 4 STANDARDS FEDERAL A-A-55273 Retainer, Eyewear MILITARY MIL-STD-662 V50 Ballistic Test for Armor (Unless otherwise indicated, copies of the above
9、specifications, standards, and handbooks are available from the Standardization Documents Order Desk, 700 Robbins Avenue, Building #4, Section D, Philadelphia, PA 19 1 1 1-5094.) 2.2.2 Other Government documents, drawings. and Dublications. The following other Government documents, drawings and publ
10、ications 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 Engineering Center Drawing NO. 8-2-1 102 - Kit, Eye Armor, Cylindrical (Copies of drawings are availa
11、ble from U.S. Army Natick Research, Development, and Engi- neering Center, Natick, MA 01760-5014. Some drawings may contain Limited Rights and Patent Legends.) 2.3 Non-Government Dublications. The following documents form a part of this document to the extent specified herein. Unless otherwise speci
12、fied, the issues of the documents which are DoD adopted are those listed in the issue of the DoDISS cited in the solicitation. Unless other- wise specified, the issues of the documents not listed in the DoDISS are the issues of the docu- ments cited in the solicitation (see 6.2). AMERICAN SOCIETY FO
13、R TESTING AND MATERIALS (ASTM) ASTM D 1003 - Standard Test Method For Haze and Luminous Transmittance of Transparent ASTM D 1044 - Standard Test Method For Resistance of Transparent Plastics to Surface Plastics Abrasion (Application for copies should be addressed to American Society for Testing and
14、Materials, (ASTM), 10 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) ANSI-Z80.1 - Ophthalmics - Prescription Ophthalmic Lenses - Recommendations ANSI-280.3 - Ophthalmics - Nonprescription Sunglasses and Fashion Eyewear Requirements ANSI-287.1 - Pra
15、ctice for Occupational and Educational Eye and Face Protection (Application for copies of ANSI publications should be addressed to ANSI, 11 West 42nd Street, New York, NY 10036.) 2 Licensed by Information Handling ServicesMIL-PRF-31013 779990b 203747b 813 MIL-PRF-31013 (Non-Government standards and
16、other publications are normally available from organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the referen
17、ces cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been ob- tained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspe
18、ction (see 6.5) as specified in 4.2. 3.2 Svstem definition. SPECS shall consist of one complete spectacle with spatula temples, size regular or large, with clear (class 1) lens, one eyewear retaining strap, one spare neutral gray (class 2) lens with black nasal piece, one pair of interchangeable cab
19、le temples in polybag, one instruction booklet, and one SPECS belt case. 3.3 Recvcled. recovered, or environmentallv ureferable materials. Recycled, recovered, or envi- ronmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the oper
20、ational and maintenance requirements, and promotes eco- nomically advantageous life cycle costs. 3.4 Design and construction. SPECS provide ballistic and laser eye protection. The ballistic protection is provided by a size regular or large, one-piece lens with integrally molded side shields for late
21、ral protection. The lens snap fits into a multi-component frame with adjustable temples and has an adjustable soft nasal piece. Sun or laser protection is provided by inter- changeable lenses that replace the standard clear lens. Class 3 spectacles shall provide laser pro- tection at 694.3 nm (ruby
22、laser wavelength) and at 1064 nm (neodymium laser wavelength). Class 4 spectacles shall provide laser protection at 694.3 nm, at 1064 nm, and at 532 nm (frequency doubled neodymium laser wavelength). See drawing 8-2- 1 102. 3.4.1 The special protective evewear cvlindrical lens. The SPECS shall allow
23、 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 SPECS, available in size regular or large, shall permit a snug and smooth operating fit with use of the adjustable cable temples and the adju
24、stable nasal piece. The same size lenses shall be interchangeable within the SPECS frame assembly. The SPECS two size system shall be adjustable to accommodate the 5th percentile female to the 95th percentile male military population. 3.4.2 Brow assembly. The multi-component frame shall permit a sec
25、ure snap fit in three loca- tions to the SPECS lens. The assembly provided in size regular or large shall permit a snug fit and integral cushioning to dampen impact to the forehead of the wearer. The hinge ratchet com- ponents shall be permanently attached to the frame brow and shall allow lens incl
26、ination for indi- vidual pantoscopic fit. 3.4.3 Temules. The two-component temples shall be interchangeable between size regular and size large SPECS eyewear. They shall provide a 15 mm range of length adjustment in 5 mm in- crements. The temple end pieces shall be provided in an interchangeable spa
27、tula and cable-type configuration to provide a comfortable and secure fit depending upon user preference or level of activity. 3 Licensed by Information Handling ServicesMIL-PRF-31013 9999906 2019477 75T MIL-PRF-31013 . 3.4.4 Nasal Diece. The nasal piece shall lock securely to the SPECS lens, but ma
28、y be removed when necessary. It shall have a means to maintain adjustments made during initial fitting. A SPECS nasal piece shall be provided with each lens and each replacement lens. 3.4.5 Evewear Retainer. The eyewear retainer shall fit snugly over the free end of the temple and shall stay in plac
29、e once adjusted. The eyewear retainer shall be made as specified in A-A-55273. 3.4.6 Belt case. A hard plastic vertical carrying case, which shall have good performance char- acteristic between -40F and +135“F, shall be mildew resistant, and shall incorporate ultraviolet inhibiters. The carrying cas
30、e shall be provided with drain holes. The carrying case shall mini- mize 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
31、green in color and shall be non-reflective; it shall attach to a soldiers equipment belt, and shall not exceed 4 ounces in weight. It shall carry one complete SPECS item, one spare lens with nasal piece, and one pair of interchangeable temples. 3.4.7 Instruction booklet. The instruction booklet shal
32、l be small enough to enable packing in the SPECS belt case with components as specified in 3.2. A standard sample of the instruction booklet shall be furnished (see 6.6). 3.5 Performance repuirements 3.5.1 Mechanical 3.5.1.1 Ballistic resistance. The ballistic resistance of the spectacles shall be s
33、uch that they will pass a Vo test using a O. 15 caliber, 5.8 grain, T37 shaped projectile at a velocity of 640 to 660 feet per second when tested as specified in 4.4.1.1. 3.5.1.2 Abrasion resistance. The percent haze gain of the SPECS lens shall not exceed 6 percent when tested as specified in 4.4.1
34、.2. 3.5.2 Optical 3.5.2.1 Prismatic deviation. The vertical prism shall not be greater than O. 18 prism diopters for either eye nor shall the algebraic 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
35、 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 eyes 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 SPECS lens shall not exceed 0
36、.0625 diopter when tested as specified in 4.4.2.2. 3.5.2.3 %tical distortion. The SPECS lens shall be free of optical distortion when tested as specified in 4.4.2.3. 3.5.2.4 Astigmatism. The maximum degree of astigmatism in the SPECS lens shall not exceed 1/16 diopter when tested as specified in 4.4
37、.2.4. 4 Licensed by Information Handling ServicesMIL-PRF-33033 9999906 2039478 696 MIL-PW-31013 3.5.2.5 Ultraviolet absomtion. The SPECS lens shall absorb at least 90 percent of the incident ultraviolet radiation in the range 290 to 380 nm when tested as specified in 4.4.2.5. 3.5.2.6 High energy las
38、er optical density for class 3 lens. The class 3 SPECS lens 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 wavelength) for laser radiation incident normal to the surface of the spectacles, with any polarization state, when
39、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. 3.5.2.7 High energy laser ontical density for class 4 lens. The class 4 SPECS lens sha
40、ll yield optical densities equal to or greater than 4 at 532 nm (frequency doubled Nd:YAG laser wave- length), 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, when tes
41、ted 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 i). The photopic luminous transmittance (for the li
42、ght adapted eye) for the class 1 SPECS lens shall not be less than 89 percent when tested in accor- dance with 4.4.2.7. 3.5.2.9 Luminous transmittance (class 2). The luminous transmittance of the class 2 SPECS lens shall be within 12 to 18 percent, and the total visible transmittance shall not vary
43、more 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. 3.5.2.10.1 Luminous transmittance (class 3) for P43 phosphor. The photopic lum
44、inous transmit- tance of the class 3 SPECS lens shall be not less than 40 percent when the source spectral emis- sion is that of the P43 phosphor when tested as specified in 4.4.2.7. 3.5.2.11 Luminous transmittance (class 4). The photopic luminous transmittance shall not be less than 12 percent when
45、 tested as specified in 4.4.2.7. 3.5.2.1 1.1 Luminous transmittance (class 4) for P43 Phosphor. The photopic luminous transmit- tance of the class 4 SPECS lens shall not be less than 9 percent when the source spectral emis- sion is that of the P43 phosphor when tested as specified in 4.4.2.7. 3.5.2.
46、12 Neutrality of (class 2). The spectral transmittance of the class 2 lens may vary with wave lengths between 430 and 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 a reasonable
47、 even distribution throughout the visible spectrum to insure that the color distortion will not be excessive. 3.5.2.13 Chromaticity of (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 4.4.2.10. 3.5.2.
48、14 Haze. The haze of the SPECS lens shall be less than 3 percent when tested as specified in 4.4.2.1 1. 5 Licensed by Information Handling ServicesMIL-PRF-31013 9999906 2039479 522 MIL-PRF-31013 3 53 Environmental 3.5.3.1 Chemical resistance. The SPECS components shall be resistant to attack from ch
49、emicals including, but not limited to, the following: Insect repellent, controlled release (DEET) Combat vehicle fluid (Dexron) Gasoline Motor oil JPS Aircraft fuel when tested as specified in 4.4.3.1. Class 3 and class 4 SPECS lenses shall meet the require- ments for optical density and luminous transmittance after testing. 3.5.3.2 TemDerature. The SPECS lens shall not be visibly degraded following exposure for 72 hours at 160OF and 72 hours at -6OOF 30F when tested as specified in 4.4.3.2. Class 3 and class 4 lenses shall meet the requirements for optical density and luminous transmittan
