Model: 7688722

Optical Instrument Lens

Special Features:

Edges chamfered 0.020 to 0.030 in. By 45 deg. Both surfaces coated with magnesium fluoride. Rim and chamfers ground.

Properties:

Diameter
Between 1.062 inches and 1.065 inches
Axial Thickness
Between 0.226 inches and 0.246 inches
Equivalent Focal Length
2.659 inches
Back Focal Length
2.571 inches
Refraction Index
1.5110
Abbe Constant
63.500
Single Lens Style
Double convex
Individual Lens Style
Double convex
Element Left Surface Radius
2.362 inches
Element Right Surface Radius
3.093 inches
Material
Glass, optical, mil-g-174, class 1, grade c, type 511-635
Material
Glass, optical, mil-g-174, class 1, grade c, type 511-635
Fsc Application Data
Periscope, tank
NSN
6650-00-768-8722
Part Number
7688722
Description
Lens,optical Instrument
CAGE
19200

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 7688722 NSN 6650-00-768-8722

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
057940
UFC:
33020
LTL:
RATING VARIABLE
LCL:
RATING VARIABLE
WCC:
744
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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