1、 A-A-530 b5 M 7797974 0027q23 2 M A-A-53088 31 July 1987 COMMERCIAL ITEM DESCRIPTION LENS, OPHTHALMIC, Glass The General Services Administration has authorized the use of this commercial item description in preference to Military Specification MIL-L-16991C. This commercial item description covers th
2、e uncut glass ophthalmic -lenses, dress type for visual deficiency correction. Salient characteristics: Lenses shall be classified to the following types, classes, styles, sizes and power required, as specified: Type I. Lens blank, semifinished II. Lens, finished, uncut Class a. Bifocal b. Single vi
3、sion c. Neutral absorption, N-21 Style 1. Spheres 2. Plano minus cylinders 3. Plus on minus compounds 4, Minus on minus compounds 5. One-piece raised ledge 6. 25mm straight top Size. The lens diameter under this specification shall be 65 mm - i- 1 mm round or 65 mm X 60 mm + 0.5 mm rectangular with
4、rounded corners. Other shapes are acceptable provided equivalent size is met . All glass lenses shall be capable to be hardened by chemical or dry heat tempering process after edging to withstand the impact resistance test requirement as specified in ANSI Z80.1-1979, Recommendations for Prescription
5、 Ophthalmic Lenses. When requested, the contractor shall demonstrate the impact resistance test for the satisfaction of the contracting officers representative. The fini,ied lens shall be a member of an integrated series of ophthalmic lenses having surface curvatures computed to conform to the corre
6、cted curve concept. AMSC N/A FSC 6540 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. 1 of 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-530BB 65 q74 OOSYZ4 4 A-A-5 3 O 88 Refractive power tolerance for the f
7、inished lens shall be as follows: Greater than 3.6.50 diopteror less than -6.50 diopter is +2% Cylinder 4.25 thru -2.00 diopter is +0.13P -2.12 thru -4.50 diopter is TO.15D Less than -4.50 diopter is I -ET% Sphere 0.00 thru 6.50 diopter is -t 0.13P The base curve on minus lens shall have certain dio
8、ptric power commensurate with the curve established by the major lens manufacturers, Flat base curve is not acceptable. Shall be to specified axial back vertex power within a tolerance of glus or minus 0.06 diopter. Center thickness of minus lens shall not be less than 2.2 mm. The corrective curve s
9、hall be generated on the inside of the lens . !the semifinished lens shall have the base curve located on convex side only . ?he white glass lens shall be made of high grade white ophthalmic 8 quality crown glass with an index of refraction of 1.5230 + 0.0015. The lens shall be free of bubbles, incl
10、usions, striae and cloudiness. When exposed to sunlight, it shall remain clear and free of color or * shade . The neutral absorption lens shall be neutral gray density commonly i.efsrred as “gray No. 3“, daylight transmission with dominant wavelength between 570 to 600 millimicrons range shall be 20
11、 + 1 percent, near infra-red transmission shall be 20 percent maximum and oKytheKmal ultra-violet transmission shall be 0.2 percent maximum, each to be determined on a glass thickness of 2.2 - + 0.2 mm. The 25 mm stxaight top bifocal lens blank shall have the major blank made of white ophthalmic cro
12、wn glass with an index of refraction of 1.523 2 .0015. The dispersion o the segment glass, Nu value (VI shall be equal to, or greater than the value defined by the formula: The segment shall also be white, made of barium glass. V = 16.7 (n-1) n-1 . 3744 Where “nn it3 the index of refraction of the s
13、egment: glass for the sodium D line. Segment: size shall be 25 mm (+0.75/-0.50) wide by 17-1/2 mm &O.SI high and decentered 3.00 mm (3. 1.5/30) to the right and left of the vortical midline. The distance rom the geometric center o the major blank to the top of the segment shall be 3 to 6 mm. The opt
14、ical center of the segment: shall be 5 mm + 0.5 below the flat: top an6 miway between the lateral edges of the Eegrnent. distance power shall be within -E 0.06 diopter of specified power. Segment addition shall be within + 0.06D/-0.09D of speciied power. Finished 2 Provided by IHSNot for ResaleNo re
15、production or networking permitted without license from IHS-,-,-a * a A-A-53088 65 777777Li 0027425 6 A-A-53088 The one-piece raised ledge bifocal lens blank shall be made of high grade white ophthalmic quality crown glass with an index of refraction of 1.5230 + 0.0015. The raised ledge shall be str
16、aight across and positioned-3 to 5 mm below the geometrical center of the lens. Workmanship. The lens shall be free from defects which detract from its appearance or impair its serviceability, Quality Assurance Provisions. Responsibility for inspection. Unless otherwise specified in the contract or
17、purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any facilities suitable for the performance of the inspection requirements specifie
18、d herein, unless disapproved by 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. Records. Records of examinations and test
19、s performed by or for the contractor shall be maintained by the contractor and made available to the Government upon the Governments request, at any time, or from time to time, during the performance of the contract and for a period of three years after delivery of the supplies to which such records
20、 relate. Inspection. Inspection, as used herein, is defined as both examination (such as visual or auditory investigation without the use of special laboratory appliances or procedures) and testing (determination by technical means of physical and chemical properties) of the item. Contractor certifi
21、cation. The contractor shall certify that the product offered meets the salient characteristics of this description - and conforms to the producers own drawings, specifications, standards, and quality assurance practices. The Government reserves the right to require proof of such conformance prior t
22、o first delivery and thereafter as may be otherwise provided for under the provisions of the contract. Regulatory requirements. Federal Food, Drug and Cosmetic Act. If the product covered by this document has been determined by the U.S. Food and Drug Administration to be under its jurisdiction, the
23、offeror/contractor shall comply, and be responsible for compliance by its subcontractors/suppliers, with the requirements of the Federal Food, Drug and Cosmetic Act, as amended, and regulations promulgated thereunder. In addition, the offeror/contractor shall comply, and be responsible for complianc
24、e by its subcontractors/suppliers, with the requirements of all other applicable Federal, State, and local statutes, ordinances, and regulations . 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-53088 65 m 7799974 OOZefY2b 8 W A-A-5 3 088 PACK
25、AG I NG Single vision finished lenses or semifinished lenses. Unit. Pair (PR). One pair of lenses, each lens packaged in a snug fitting envelope, constitutes one unit. Finiahed bifqcal lenses. Unft:. Pair (PR). One matched pair consisting of one left and one Eight lens each placed in an envelope and
26、 the pair further packaged in a paper box constitutes one unit. may be omitted, As an alternate, the paper box Semifinished bifocal lenses. Wnit. Paix (PR), Each lens shall be wrapped in tissue and packaged in a snug Eittiny box. constitute one pair. Two boxes shall be taped together to Packaging qu
27、antities. The number of lenses to be packaged in intermediate and exterior containers shall be as follows: Single vision finished lens Lens power Diopter +0*25 to 4.2.25 -1-2.50 to -1-5.00 6.25 to +8.00 -0125 to -1.25 -1.50 to -2.50 -2.75 ta -6,OO -0.25 to -3.00 -3.25 to -7.50 Number of units In int
28、ermediate package Plus on minus compound lenses 15 10 5 Minus cylinder,_lenses 15 10 5 Minus on minus compound lenses 10 5 4 Number of units In a shipping Container 540 360 180 540 360 180 360 180 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-
29、530 65 9 9997974 0029427 T = a c t e O A-A-5 3 08 a Finished bifocal lens Number of units in intermediate package Semifinished bifocal lens Number of units in intermediate package 5 Nunder of units in a shipping container 540 Number of units in a shipping container ia0 Packing variation permitted. I
30、f the required number of units to be shipped is less than the number of units specified to be overpacked in an exterior container, such units shall be packed in an exterior container of suitable size and design, acceptable to a common carrier, which will insure safe delivery to destination. Preserva
31、tion, packaging, packing, labeling, and marking. Unless otherwise specified, preservation, packaging, and packing shall be to a degree of-protection to preclude damage to containers and/or contents thereof under normal shipping conditions, handling, etc., involving shipment from the supply source to
32、 the receiving activity, plus reshipment from receiving activity, and shall conform to applicable carriers rules and regulations. Labeling and marking. semifinished lenses and boxes for finished and semifinished bifocal lenses. Each envelope or box shall be marked with the lens power, lens size, bas
33、e curve, name or registered trade mark of the contractor, National Stock Number, quantity and unit of issue. Unit package. Each envelope for single vision finished or Intermediate package and shipping container. Each intermediate package and shipping container shall be marked as specified in MIL- 5
34、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-6540-00-104 aeries 6540-00-164 series 6540-00-177 sexies 6540-00-180 series 6540-00-518 seriesi 6540-00-528 series 6540-00-782 series 6540-00-926 series 6540-00-965 series 6540-01-088 series 6540-01-089
35、 series 6540-01-090 series 6540-01-091 series 6540-01-095 series 6549-01-102 series 6540-01-158 series Bidering data. and marking mugt be specified in the contract and/or order) MILITARY INTERESTS: PREPARING ACTIVITY: (Intermediate/exterior package quantities and labeling DoD-MB Agent DLA-DM I CIVIL AGENCY COORDINATING ACTIVITY: VA-OS% P 11s FDA-MPQAS Project No. 6540-5145 Location: NCR Disk #3 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
