Model: 8567555

Optical Instrument Lens

Properties:

Diameter
1.220 inches
Axial Thickness
0.3662 inches and 0.0866 inches
Compound Lensaxial Thickness
Between 0.429 inches and 0.469 inches
Compound Lens Edge Thickness
0.281 inches
Equivalent Focal Length
2.603 inches
Back Focal Length
2.491 inches
Refraction Index
1.5170 and 1.6490
Abbe Constant
64.500 and 33.800
Compound Lens Style
Doublet
Individual Lens Style
Double convex and meniscus diverging
Element Left Surface Radius
1.9405 inches and -1.1957 inches
Element Right Surface Radius
-1.1957 inches and -2.7240 inches
Material
Glass, optical, mil-g-174, class 1, grade c
Material
Glass optical
Material Specification
Mil-g-174, class 1, grade c military specification single material response
Fsc Application Data
Sight periscope m25, integrated with fire control equipment
NSN
6650-00-346-8211
Part Number
8567555
Description
Lens,optical Instrument
CAGE

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.

Part 8567555 NSN 6650-00-346-8211

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
21884
FIIG:
T271-E
Concept No.:
1
App. Key:
EA
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 9018500000
  • SITC: 87225
  • End Use: Medicinal equipment
  • NAICS: 339115
  • USDA: 1

Freight Class: Other ophthalmic instruments and appliances and parts and accessories

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