Model: 178697PC8

Optical Instrument Lens

Properties:

Diameter
0.630 inches
Axial Thickness
0.216 inches and 0.082 inches
Compound Lensaxial Thickness
0.299 inches
Compound Lens Edge Thickness
0.279 inches
Equivalent Focal Length
3.586 inches
Back Focal Length
3.444 inches
Front Focal Length
3.539 inches
Refraction Index
1.5720 and 1.6170
Abbe Constant
57.400 and 36.600
Compound Lens Style
Doublet
Individual Lens Style
Double convex and meniscus diverging
Element Left Surface Radius
-1.031 inches and 2.574 inches
Element Right Surface Radius
-1.031 inches and -6.023 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 15 mod 4
NSN
6650-00-155-1757
Part Number
178697PC8
Description
Lens,optical Instrument
CAGE
10001

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 178697PC8 NSN 6650-00-155-1757

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:
A
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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