|
|
|
National Stock Number:
6650-00-683-9549
Federal Supply Class:
6650
National Item Identification Number:
006839549
Description:
LENS,OPTICAL INSTRUMENT
Detail:
An unmounted, transparent, color free lens which may be treated with a low reflection coating to increase light transmission. Includes single and compound elements. For items having two plane parallel surfaces, see WINDOW, OPTICAL INSTRUMENT. Excludes RETICLE, OPTICAL INSTRUMENT.
|
Manufacturer Information:
| 1240006839549 | A00AM | E.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE | | 8574718 | 19200 | US ARMY ARDEC RDECOM | | MIL013830 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
|
Techincal Specification:
| ELEMENT RIGHT SURFACE RADIUS | 4.213 INCHES | | ELEMENT LEFT SURFACE RADIUS | 4.213 INCHES | | ABBE CONSTANT | 63.500 AND 32.200 | | AXIAL THICKNESS | 0.394 INCHES NOMINAL AND 0.157 INCHES NOMINAL | | BACK FOCAL LENGTH | 7.808 INCHES | | COMPOUND LENS EDGE THICKNESS | 0.473 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.551 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 2.165 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 8.133 INCHES | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5170 NOMINAL AND 1.6725 NOMINAL |
|
|