Model: MIL1803

Optical Instrument Lens

Properties:

Diameter
Between 1.750 inches and 1.752 inches
Axial Thickness
0.370 inches and 0.150 inches
Compound Lensaxial Thickness
0.520 inches
Compound Lens Edge Thickness
0.296 inches
Equivalent Focal Length
3.133 inches
Back Focal Length
3.176 inches
Front Focal Length
2.773 inches
Refraction Index
1.6110 and 1.6490
Abbe Constant
58.800 and 33.800
Compound Lens Style
Doublet
Individual Lens Style
Double convex and double concave
Element Left Surface Radius
-6.169 inches and 1.700 inches
Element Right Surface Radius
-6.169 inches and 16.598 inches
Material
Glass, optical, mil-g-174, class 1, grade b
Material
Glass, optical, mil-g-174, class 1, grade b
Fsc Application Data
Optical sighting and ranging equipment
NSN
6650-00-210-4399
Part Number
MIL1803
Description
Lens,optical Instrument
CAGE
06175

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 MIL1803 NSN 6650-00-210-4399

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:
--
WCC:
653
TCC:
Z
SHC:
9
ACC:
Engineer 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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