LBTEK-Your Trusted Partner For Optoelectronic Experiments!

Product Description

AR Coating: 400-700nm
Attenuating low power lasers
OD: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.3, 1.5, 2, 3, 4, 5, 6

LBTEK Absorptive Neutral Density (ND) Filters (400 nm-700 nm) have an optical density (OD) range of 0.1-6.0. The AR coating effectively reduces reflected light energy. LBTKE filters are available in a circular Ø25.4 mm size, with thickness varying based on material and optical density (OD). The Ø25.4 mm filters can be mounted in threaded tubes or installed on 30 mm coaxial mounting plates (OPM-12.5BS) for use in LBTEK's coaxial systems. We also offer other mounting options with optomechanical components. LBTEK provides customization services for filters with special sizes and optical density values. For inquiries, please contact Technical Support.

Attribute

Surface Flatness (@633 nm)λ/4

Clear Aperture＞90% CA

Surface finish (scratches/pits)40/20

Parallelism＜10 arcsec

Absorptive Neutral Density (ND) Filters, AR Coating: 400-700nm, Unmounted

Low power applications
Absorptive neutral density filters
Anti-reflection coating 400 nm-700 nm

LBTEK absorptive neutral density filters utilize Schott glass substrates that exhibit stable absorption rates across the 400 nm-650 nm wavelength range. These substrates are coated with anti-reflection film on one side (400 nm-700 nm), with the coated surface serving as the incident side to effectively reduce reflected light energy. LBTEK currently offers filters with optical densities ranging from OD0.1 to OD6.0, all with a diameter of 25.4 mm. They can be mounted in LBTEK standard lens tubes, fixed lens mounts, and various coaxial mounting plates. Customers can select the optimal mounting method based on different application scenarios. Note: The thickness of absorptive neutral density filters is for reference only, as the actual thickness depends on the optical density of the glass batch used.

LBTEK Absorptive Neutral Density Filter Mounted on FLF1

Product Model	OD	Diameter	Operating Wavelength	Unit Price	Lead Time
NDFA20-13-SP	1.3±0.065@550 nm	Ø50.0 mm	400 nm-650 nm	$79.62	7 weeks
NDFA20-17-SP	1.7±0.085@550 nm	Ø50.0 mm	400 nm-650 nm	$79.62	7 weeks
NDFA20-07-SP	0.7±0.035@550 nm	Ø50.0 mm	400 nm-650 nm	$79.62	7 weeks
NDFA10-60-A	6.0±0.30@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-50-A	5.0±0.25@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-15-A	1.5±0.075@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-13-A	1.3±0.065@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-10-A	1.0±0.06@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-09-A	0.9±0.045@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-08-A	0.8±0.04@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-07-A	0.7±0.035@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-06-A	0.6±0.03@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-05-A	0.5±0.03@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-04-A	0.4±0.02@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-03-A	0.3±0.015@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-02-A	0.2±0.01@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-01-A	0.1±0.005@550 nm	Ø25.4 mm	400 nm-700 nm	$59.36	7 weeks
NDFA10-40-A	4.0±0.20@550 nm	Ø25.4 mm	400 nm-700 nm	$57.92	6 weeks
NDFA10-30-A	3.0±0.15@550 nm	Ø25.4 mm	400 nm-700 nm	$57.92	6 weeks
NDFA10-20-A	2.0±0.10@550 nm	Ø25.4 mm	400 nm-700 nm	$57.92	6 weeks

Absorptive Neutral Density (ND) Filters, AR Coating: 400-700nm, Mounted

Low power applications
Anti-reflection coating: 400 nm-700 nm
Mounted in mechanical housing, detachable

The LBTEK absorptive neutral density filters have an optical density (OD) range of 0.1-6.0, with a size of 1 inch and are coated with anti-reflection coatings for 400 nm-700 nm. The MNDFA series absorptive neutral density filters come mounted in detachable standard lens tubes, with the surface engraved with product model, working wavelength, and OD value for easy identification. Note: The thickness of absorptive neutral density filters is for reference only, as the actual thickness depends on the optical density of the glass batch used.

Filter mounted on mechanical components with SM1 threads

Product Model	OD	Diameter	Operating Wavelength	Unit Price	Lead Time
MNDFA10-60-A	6.0±0.30@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-50-A	5.0±0.25@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-40-A	4.0±0.20@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-30-A	3.0±0.15@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-20-A	2.0±0.10@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-15-A	1.5±0.075@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-13-A	1.3±0.065@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-10-A	1.0±0.06@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-09-A	0.9±0.045@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-08-A	0.8±0.04@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-07-A	0.7±0.035@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-06-A	0.6±0.03@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-05-A	0.5±0.03@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-04-A	0.4±0.02@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-03-A	0.3±0.015@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-02-A	0.2±0.01@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks
MNDFA10-01-A	0.1±0.005@550 nm	Ø25.4 mm	400 nm-700 nm	$68.77	7 weeks