Model: 68-701

Optical Instrument Lens

Properties:

Diameter
50.000 millimeters
Axial Thickness
7.000 inches and 4.500 inches
Compound Lensaxial Thickness
11.500 millimeters
Compound Lens Edge Thickness
9.000 millimeters
Equivalent Focal Length
23.416 centimeters
Back Focal Length
22.030 centimeters
Front Focal Length
24.145 centimeters
Refraction Index
1.6170 and 1.6890
Abbe Constant
55.000 and 30.900
Compound Lens Style
Doublet
Individual Lens Style
Plano-convex and plano-concave
Element Left Surface Radius
72.460 millimeters and 485.290 millimeters
Element Right Surface Radius
485.290 millimeters and 158.060 millimeters
Material
Glass
Material
Glass
NSN
6650-00-820-4577
Part Number
68-701
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 68-701 NSN 6650-00-820-4577

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:
TG
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
058110
UFC:
33110
LTL:
200.0
LCL:
--
WCC:
651
TCC:
Z
SHC:
9
ACC:
Medical Supplies

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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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