Name: 50mm Dia. x 200mm FL VIS-EXT, Inked, Double-Convex Lens
Brand: TECHSPEC
SKU: 89-203-INK
Price: ₹6,928.00

50mm Dia. x 200mm FL VIS-EXT, Inked, Double-Convex Lens

Diameter (mm):

50.00 +0.000/-0.025

Back Focal Length BFL (mm):

198.33

Effective Focal Length EFL (mm):

200.00

Coating:

VIS-EXT (350-700nm)

Coating Specification:

R_avg <0.5% @ 350 - 700nm

N-BK7

Surface Quality:

40-20

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Centering (arcmin):

Bevel:

Protective bevel as needed

Center Thickness CT (mm):

5.05

Center Thickness Tolerance (mm):

±0.10

Edge Thickness ET (mm):

2.00

Radius R₁=-R₂ (mm):

205.86

Clear Aperture CA (mm):

49.00

f/#:

4.00

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1

Numerical Aperture NA:

0.13

Type:

Double-Convex Lens

Wavelength Range (nm):

350 - 700

Regulatory Compliance

RoHS:

Compliant

Certificate of Conformance:

View

Product Family Description

AR Coated to Provide <0.5% Reflectance per Surface for 350 - 700nm
Minimize Aberrations Including Spherical and Coma
UV Fused Silica DCX Lenses Available
Other Coating Options Available: Uncoated, MgF₂, VIS 0°, NIR I, NIR II, VIS-NIR, and YAG-BBAR

TECHSPEC® VIS-EXT Coated Double-Convex (DCX) Lenses, also referred to as bi-convex lenses, have two positive, symmetrical faces with equal radii on both sides. These lenses are generally recommended for finite imaging applications with a conjugate ratio (ratio between object distance and image distance) between 0.2 and 5. At a conjugate ratio of 1, aberrations such as spherical aberration, chromatic aberration, coma, and distortion are minimized or cancelled due to the symmetric lens design. TECHSPEC VIS-EXT Coated Double-Convex Lenses are available in a variety of substrates and coating options for the visible and NIR spectra.

Title	Type	Stock Number	Price	Buy
50.0/50.8mm Optic Dia., X-Y Translating Optic Mount	Adjustable - Linear (XY)	#62-957	₹23,970.00 Qty 5+ ₹22,771.00 Request Quote	10 to 12 days ×
50.0/50.8mm Optic Dia., X-Y-Z Translating Optic Mount	Adjustable - Linear (XYZ)	#62-960	₹46,920.00 Qty 5+ ₹44,574.00 Request Quote	10 to 12 days ×
50.0mm Optic Dia., Optic Mount	Fixed	#64-567	₹4,845.00 Qty 10+ ₹4,361.00 Request Quote	10 to 12 days ×
50.0mm Optic Dia., Optic Mount	Fixed	#64-568	₹4,845.00 Qty 10+ ₹4,361.00 Request Quote	10 to 12 days ×
50.0/50.8mm Optic Dia., 5 Axes Optical Mount	Adjustable - Linear (XYZ) & Tip-Tilt	#13-778	₹65,280.00 Qty 5+ ₹62,016.00 Request Quote	10 to 12 days ×
50.0/50.8mm Optic Dia., SM2 Thin Mount	Fixed	#17-716	₹2,805.00 Qty 10+ ₹2,669.00 Request Quote	10 to 12 days ×