The LENS,OPTICAL INSTRUMENT is a NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER optical transceiver module designed for high-speed data center interconnects. Key specifications include DIAMETER: 27.0 MILLIMETERS NOMINAL MM, MATERIAL: GLASS OPTICAL, ABBE CONSTANT: 33.800 AND 57.400, AXIAL THICKNESS: 8.5 MILLIMETERS NOMINAL AND 2.0 MILLIMETERS NOMINAL MM, REFRACTION INDEX: 1.6490 NOMINAL AND 1.5725 NOMINAL, BACK FOCAL LENGTH: 4.033 CENTIMETERS CM. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6650-00-157-4140, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
| DIAMETER | 27.0 MILLIMETERS NOMINAL MM |
| MATERIAL | GLASS OPTICAL |
| ABBE CONSTANT | 33.800 AND 57.400 |
| AXIAL THICKNESS | 8.5 MILLIMETERS NOMINAL AND 2.0 MILLIMETERS NOMINAL MM |
| REFRACTION INDEX | 1.6490 NOMINAL AND 1.5725 NOMINAL |
| BACK FOCAL LENGTH | 4.033 CENTIMETERS CM |
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| END ITEM IDENTIFICATION | RANGEFINDER MK42 |
| EQUIVALENT FOCAL LENGTH | 4.715 CENTIMETERS CM |
| ELEMENT LEFT SURFACE RADIUS | 25.6 MILLIMETERS AND -23.9 MILLIMETERS MM |
| ELEMENT RIGHT SURFACE RADIUS | 23.9 MILLIMETERS AND 345.5 MILLIMETERS MM |
| NSN | 6650-00-157-4140 |
| EQUIVALENT FOCAL LENGTH | 4.715 CENTIMETERS CM |
| END ITEM IDENTIFICATION | RANGEFINDER MK42 |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 10.5 MILLIMETERS NOMINAL MM |
| DIAMETER | 27.0 MILLIMETERS NOMINAL MM |
| MATERIAL | GLASS OPTICAL |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| COMPOUND LENS STYLE | DOUBLET |
| MATERIAL DOCUMENT AND CLASSIFICATION | JAN-G-174 MIL SPEC SINGLE MATERIAL RESPONSE |
| ELEMENT LEFT SURFACE RADIUS | 25.6 MILLIMETERS AND -23.9 MILLIMETERS MM |
| AXIAL THICKNESS | 8.5 MILLIMETERS NOMINAL AND 2.0 MILLIMETERS NOMINAL MM |