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278702-10

Optical Instrument Lens

Model / MPN: 278702-10 | NSN: 6650-00-026-8134

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.

Product Details

NATO Stock Number

6650-00-026-8134

Sold in multiples of

1 EA

DEMIL

DEMIL/MLI

Diameter

2.440 inches

Axial Thickness

0.315 inches and 0.236 inches

Compound Lensaxial Thickness

0.551 inches

Compound Lens Edge Thickness

0.503 inches

Equivalent Focal Length

31.656 inches

Back Focal Length

31.212 inches

Front Focal Length

31.555 inches

Refraction Index

1.5170 and 1.6170

Abbe Constant

64.500 and 36.600

Compound Lens Style

Doublet

Individual Lens Style

Double convex and meniscus diverging

Element Left Surface Radius

-13.255 inches and 15.066 inches

Element Right Surface Radius

-13.255 inches and -125.539 inches

Material

Glass, optical, jan-g-174, grade c

Material

Glass, optical, jan-g-174, grade c

Fsc Application Data

Fire control, range finder mk 37 mod 5

278702 Series Parts

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

278702-10 Cross Reference

278702PC10