LightPath 352240 | BBAR (350-700nm) Aspheric Lens

Diameter (mm):

9.94 ±0.015

Effective Focal Length EFL (mm):

8.00 @ 780nm

Numerical Aperture NA:

0.50

Focal Length Tolerance (%):

±1

Center Thickness CT (mm):

3.69 ±0.04

Coating:

BBAR (350-700nm)

Coating Specification:

R_avg ≤0.5% @ 350 - 700nm

ECO-550

Clear Aperture CA (mm):

8.00

Asphere Figure Error (μm RMS):

Diffraction Limited Transmitted Wavefront

Surface Quality:

40-20

Edge Thickness ET (mm):

1.56

Bevel:

Protective bevel as needed

f/#:

1.00

Lightpath Lens Code:

352240

Operating Temperature (°C):

≤200

Wavelength Range (nm):

350 - 700

Typical Applications:

Collimate or Focus Laser Light

Working Distance (mm):

5.92

Conjugate Distance:

Infinite

Regulatory Compliance

RoHS 2015:

Compliant

Reach 211:

Compliant

Product Family Description

Micro Sizes 2mm Dia.
Several Coating Options

Aspheric lenses are known for providing simple, single-element solutions for managing laser light. LightPath® has perfected a glass molding technology that produces aspheric lenses with consistent quality and at practical prices for system designers. Aspherics, which can be made in a large variety of Numerical Apertures (NA), can eliminate spherical aberrations and improve focusing and collimating accuracy. A low NA is ideal for maintaining beam shape, as in barcode scanning, where a nearly circular beam is critical. High NA lenses gather all available energy when long beam paths are required, such as in sighting systems. Molded aspheric lenses are used in a wide variety of photonic products including bar code scanners, laser diode-to-fiber couplings, optical data storage, and medical lasers.

Note: May be available in limited quantities, or require a minimum purchase quantity. Contact us for more information

Technical Information

Index Change by Wavelength
Wavelength	Index of Refraction
486.1nm	1.61341
546.1nm	1.60786
587.6nm	1.60500
632.8nm	1.60251
656.3nm	1.60141
670.0nm	1.60095
706.5nm	1.59940
780.0nm	1.59708
852.1nm	1.59528
1014.0nm	1.59227
1300.0nm	1.58850
1550.0nm	1.58572


Numerical Aperture NA	Effective Focal Length EFL	Window Properties (Thickness t, Index)
0.15	5.000	N/A
0.15	18.400	0.250, 1.517
0.16	15.290	0.250, 1.517
0.18	6.100	N/A
0.18	13.860	N/A
0.25	11.000	0.250, 1.517
0.30	1.160	N/A
0.30	6.160	0.275, 1.517
0.30	7.50	0.275, 1.517
0.40	6.240	0.275, 1.517
0.42	4.500	N/A
0.43	1.140	0.300, 1.517
0.47	4.470	1.20, 1.573
0.50	2.000	0.250, 1.517
0.50	8.000	0.250, 1.517
0.53	2.950	0.250, 1.517
0.55	0.382	N/A
0.55	1.450	N/A
0.55	2.720	1.20, 1.573 (Polycarbonate)
0.55	3.890	1.20, 1.573
0.55	4.510	0.250, 1.517
0.59	0.450	N/A
0.60	4.000	1.20, 1.518
0.62	4.030	1.20, 1.518
0.68	2.750	N/A
0.68	3.100	N/A