1、METRICMIL-PRF-49170B(CR)19 MAY 1997SUPERSEDINGMIL-I-49170A(ER)11 June 1982PERFORMANCE SPECIFICATIONOPTICAL IMAGER, SU-97/UA, SU-97A/UA, AND SU-97B/UAThis performance specification is approved for use by USACECOM, Department of theArmy, and is available for use by all Departments and Agencies of the
2、Department of Defense.1. SCOPE1.1 Scope. This performance specification covers one type of common module with threechangeable models; Optical Imager, SU-97/UA, SU-97A/UA, and SU-97B/UA.2. APPLICABLE DOCUMENTS2.1 General. The documents listed in this section are specified in sections 3 and 4 of thiss
3、pecification. This section does not include documents in other sections of this specification orrecommended for additional information or as examples. While every effort has been made toensure the completeness of this list, document users are cautioned that they must meet allspecified requirements d
4、ocuments cited in sections 3 and 4 of this specification, whether or notthey are listed.2.2 Government documents.2.2.1 Handbooks. The following handbooks form a part of this document to the extentspecified herein. Unless otherwise specified, the issues of this documents are those listed in theissue
5、of the Department of Defense Index of Specifications and Standards (DoDISS) andsupplement thereto, cited in the solicitation (see 6.2). Handbooks are for guidance only andtherefore are not mandatory.AMSC N/A FSC 5855DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.Ben
6、eficial comments (recommendations, additions, deletions) and any pertinent data which maybe of use in improving this document should be addressed to: HQ, USA Communications-Electronics Command, ATTN: AMSEL-LC-LEO-E-EP, Fort Monmouth, NJ 07703 by using theStandardization Document Improvement Proposal
7、 (DD Form 1426) appearing at the end of thisdocument or by letter.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49170B(CR)2HANDBOOKSDEPARTMENT OF DEFENSEMIL-HDBK-454 - Standard general requirements for electronicequipment(Unless otherwise i
8、ndicated, copies of the above handbooks are available from theStandardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA19111-5094.)2.2.2 Other Government documents, drawings, and publications. The following otherGovernment documents, drawings, and publications form a par
9、t of this document to the extentspecified herein. Unless otherwise specified, the issues are those cited in the solicitation.Drawings listed below are identified to ensure accurate interface of the item produced under thisperformance specification with existing hardware.DRAWINGSUS ARMY COMMUNICATION
10、S-ELECTRONICS COMMANDSM-D-806993 - Optical Imager SU-97/UASM-D-772258 - Optical Imager SU-97A/UASM-D-969555 - Optical Imager SU-97B/UA(Copies of specifications, standards, drawings, and publications required by contractors inconnection with specific procurement functions should be obtained from the
11、procuring activity oras directed by the contracting officer.)2.3 Non-Government publications. The following documents form a part of this documentto the extent specified herein. Unless otherwise specified, the issues of the documents which areDoD adopted are those listed in the issue of the DoDISS c
12、ited in the solicitation. Unlessotherwise specified, the issues of documents not listed in the DoDISS are the issues of thedocuments cited in the solicitation (see 6.2).AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)ANSI PH 3.35-1977 - Method of designating and measuring focallengths and distances of p
13、hotographic lenses.ANSI PH 3.29-1979 - Method of designating and measuringapertures and related quantities pertaining to photographic objectives and projection lenses.ANSI/ASQC Z1.4 - Sampling procedures and Tables for inspection.Provided by IHSNot for ResaleNo reproduction or networking permitted w
14、ithout license from IHS-,-,-MIL-PRF-49170B(CR)3(Application for copies should be addressed to American National Standards Institute, Inc.1430 Broadway, NY, NY 10018)2.4 Order of precedence. In the event of a conflict between the text of this document andthe references cited herein, the text of this
15、document takes precedence. Nothing in thisdocument, however, supersedes applicable laws and regulations unless a specific exemption hasbeen obtained.3. REQUIREMENTS3.1 First article. When specified in the contract (see 6.2) the contractor shall furnish firstarticle units for inspection (see 4.2).3.2
16、 Materials. The contractor shall select the materials, but the materials used shall befully capable of meeting all of the operational and environmental requirements specified herein.The materials specified in the applicable drawings are recommended, but are not mandatory.Selection criteria of the cl
17、ass, grade or type part shall be that the material will be able to performits intended function when it is assembled. Verification of the supplier meeting the overallperformance requirements shall be the governing acceptance standard. Recovered materials shallbe used to the maximum extent possible.3
18、.3 Description. The Optical Imager SU-97/UA, SU-97A/UA, and SU-97B/UA, referredto herein as the imager, consists of thermally compensated optical elements which focus the IRenergy from a mechanical scanner onto the detector array of an infrared system. The threemodels differ in their internal config
19、uration but are identical in performance and externalconfiguration. In system usage, they are, and must be, completely interchangeable.3.3.1 Design. The imager shall meet the form, fit, function and interface requirements ofthis specification.3.3.2 Weight. The weight of the imager shall be 318 grams
20、 or under as weighed by a scalewith an accuracy of 1% or better.3.3.3 Dimensions. The imager shall meet the dimensions and dimensional tolerances ofdrawings SM-D-806993, SM-D-772258 or SM-D-969555 to ensure proper physical mating andoperation of the items built under this specification with the exis
21、ting hardware.3.4 Components. The number of components comprising the imager shall be held to aminimum consistent with meeting the performance requirements. In this regard, drawings are tobe considered as a non-binding guide only.Provided by IHSNot for ResaleNo reproduction or networking permitted w
22、ithout license from IHS-,-,-MIL-PRF-49170B(CR)43.5 Performance characteristics.3.5.1 Effective Focal Length (EFL). The EFL of the imager in the 7.6 to 11.75 micrometerspectral region shall be 67.8, 0.7 millimeters as defined by ANSI PH 3.35, paragraph 4.3.5.2 f/number. The f/number of the imager sha
23、ll be f/1.6 or faster, set by the clearaperture of the first lens element (see Figure 3), as defined by ANSI PH 3.29, paragraph 2.6.3.5.3 Linear Distortion. The geometric (linear) distortion of the imager shall be between 0to -3 percent at the edge of the field.3.5.4 Modulation transfer function (MT
24、F). The MTF of the imager shall not be less thanthe MTF given in Figure 1 as measured in a flat-field focal plane and parallel to surface A inFigure 2. Perform 4.5.4 for acceptance.3.5.5 Relative Illumination (RI). The RI of the imager at f/2.0 shall not be less than 60percent at the edge of the fie
25、ld, for a field diameter of 6.5 millimeters at the image plane.Perform 4.5.5 for acceptance.3.5.6 Flange focal distance (FD). The FD shall be set to a nominal of 50.0, 0.6 mm atambient temperature (see 6.4.2). Perform 4.5.6 for acceptance.3.5.7 Field of view (FOV). The imager shall have a FOV suffic
26、ient to fill a circular formatwith a diameter of 6.5 mm as measured as part of the relative illumination requirement. .Perform 4.5.7 for acceptance.3.5.8 Optical transmittance. The optical transmittance of the imager, measured in the 7.6 -11.75 micrometer spectral region shall be at least 85% at amb
27、ient temperature (see 6.4.2).Perform 4.5.8 for acceptance.3.5.9 Deviation. The optical axis of the imager shall not deviate from 90.0 degrees bymore than +/- 0.5 degree. Perform 4.5.9 for acceptance.3.6 Environmental conditions.3.6.1 Temperature shock. The imager shall not be damaged (see 6.4.1) by
28、sudden changesin temperature between -54C and +71C.3.6.2 High temperature. The imager shall not be damaged by storage to +95C oroperation to +71C.3.6.3 Low temperature. The imager shall not be damaged by operation to -54C or storageto -62C.Provided by IHSNot for ResaleNo reproduction or networking p
29、ermitted without license from IHS-,-,-MIL-PRF-49170B(CR)53.6.4 Shock. The imager shall not be damaged by high intensity shocks of 100 gs peakamplitude with 11 milliseconds duration duration and by bench handling tests.3.6.5 Vibration. The imager shall not be damaged after sustaining vibration over a
30、frequency spectrum at the specified g levels and amplitudes shown in Figure 3 (see 6.4.1).3.6.6 Altitude. The imager shall not be damaged by operation at altitudes up to 10,000feet above sea level or storage to 10,000 feet above sea level or storage to 50,000 feet above sealevel.3.7 Treatment and pa
31、inting. Unless otherwise specified, the imager shall have an externalsurface of a composition or surface treatment which will prevent rust, corrosion, and fungusgrowth in the full range of environmental requirements. External color and surface shine shallreduce light reflection and reduce recognitio
32、n. Adherence must be assured through the full rangeof environmental and use factors.3.8 Nameplates and product marking. The imager, parts, components, subassemblies, andassemblies thereof shall be marked for identification and reference designation markings. Forguidance, use MIL-HDBK-454.3.9 Workman
33、ship. All parts shall be free of material defects such as bubbles, seeds,cracks, feathers, milkiness and other imperfections. Manufacturing defects such as blisters,burns, chips, dirt and other like defects shall be cause for rejection of the component or finalassembly.4. VERIFICATION4.1 Classificat
34、ion of inspections. Inspections shall be classified as follows:a. First article inspection (see 4.2).b. Conformance inspection (see 4.3).4.2 First article inspection. First article inspection shall be performed by the contractor ona number of samples specified in the contract or purchase order when
35、a first article sample isrequired (see 6.2). This inspection shall include the examination of 4.2.1 and the tests of 4.2.2.4.2.1 Visual examination. All materials, parts, and assemblies shall be examined forconformance to the applicable specification or drawing as indicated. Inspections shall be mad
36、eusing ANSI/ASQC Z1.4 sampling procedures.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49170B(CR)6TABLE I. Visual inspections.Inspection Requirement paragraph Verification paragraphAny as specified part or componentmissing or damaged 3.3,
37、6.4.1 4.2.1Dimensions not as specified 3.3.1 4.2.1Flange diameter (1.998 in. ref) 3.3.1 4.2.1Flange mounting hole pattern 3.3.1 4.2.1Weight not as specified 3.3.2 4.2.1Treatment and paintingnot as specified 3.7 4.2.1Marking not as specified 3.8 4.2.1Workmanship not as specified 3.9 4.2.14.2.2 Tests.
38、 Upon successful completion of inspections specified in 4.2.1, perform thetests in Table II in any order. Failure to meet any performance requirement shall constitute firstarticle failure.TABLE II. First article inspection.Inspection Requirement paragraph Test paragraphEquivalent focal length 3.5.1
39、4.5.1f/number 3.5.2 4.5.2Geometric distortion 3.5.3 4.5.3Modulation transfer function 3.5.4 4.5.4Relative illumination 3.5.5 4.5.5Flange focal distance 3.5.6 4.5.6Field of view 3.5.7 4.5.7Optical transmittance 3.5.8 4.5.8Deviation 3.5.9 4.5.9Temperature shock 3.6.1 4.6.1High temperature 3.6.2 4.6.2L
40、ow temperature 3.6.3 4.6.3Shock 3.6.4 4.6.4Vibration 3.6.5 4.6.5Altitude 3.6.6 4.6.64.2.3 Disposition of first article samples. First article samples shall not be considered aspart of the procurement quantities (see 6.2).4.3 Conformance inspection.4.3.1 Inspection. Inspection shall be as specified i
41、n 4.2.1.4.3.2 Group Inspections.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49170B(CR)74.3.2.1 Group A inspection. Group A inspection shall be conducted at an ambienttemperature (see 6.4.2) on all imagers following the inspection of 4.3.1
42、. Group A tests listed inTable III may be performed in any order. Failure of any requirement shall be cause forrejection of that unit. Sampling shall be per ANSI/ASQC Z1.4.TABLE III. Group A inspection.Inspection Requirement paragraph Test paragraphModulation transfer function 3.5.4 4.5.4Flange foca
43、l distance 3.5.6 4.5.64.3.2.2 Group B inspection. Not required.4.3.2.3 Group C inspection. Group C inspection shall be conducted on imagers selectedfrom units which have passed the tests in 4.3.2.1. The sample(s) shall be tested in accordancewith the inspections listed in Table IV. Samples shall be
44、selected in accordance with 4.3.2.3.1.Group C tests listed in Table IV may be performed in any order.4.3.2.3.1 Sampling for Group C inspection. Group C inspection samples shall be selectedfrom monthly lots in accordance with ANSI/ASQC Z1.4 and as specified in the contract (see6.2.f.).TABLE IV. Group
45、 C inspection.Inspection Requirement paragraph Test paragraphEquivalent focal length 3.5.1 4.5.1Relative illumination 3.5.5 4.5.5Optical transmittance 3.5.8 4.5.8Deviation 3.5.9 4.5.9Temperature shock 3.6.1 4.6.1Vibration 3.6.5 4.6.54.3.2.3.2 Group C failures. Actions required relative to group C fa
46、ilures shall be asspecified in the contract (see 6.2).4.3.2.3.3 Disposition of Group C samples. Group C samples shall be accepted oncontract subsequent to the tests of Table III.4.4 Examination. Each imager shall be examined for compliance with the requirementsspecified in 3.3 through 3.9. Any redes
47、ign or modification of the contractors standard productto comply with specified requirements, or any necessary redesign or modification followingfailure to meet the specified requirements shall receive particular attention for adequacy andsuitability. This element of inspection shall encompass all v
48、isual examinations anddimensional measurements. Noncompliance with any specified requirements or presence ofProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49170B(CR)8one or more defects preventing or lessening maximum efficiency shall consti
49、tute cause forrejection.4.5 Methods of inspection. Measurements taken by the contractor during verificationtesting of all environmental performance requirements shall be accomplished using test apparatussuch an environmental test chamber, vibration test table, pendulum shock device or similarequipment which simulate extreme climatic or environmental conditions. For temperature test,te
