LBTEK-Your Trusted Partner For Optoelectronic Experiments!

Product Description

Attenuating low power lasers
Absorptive Neutral Density Filters
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, 7, 8

LBTEK Absorptive Neutral Density (ND) Filters feature optical densities (OD) ranging from 0.1 to 8.0, available in two sizes: round Ø25.4 mm and square 50.8 mm. The Ø25.4 mm version can be mounted in threaded tubes or installed on a 30 mm coaxial mounting plate (OPM-12.5BS) for use in LBTEK's coaxial systems. The square 50.8 mm version can be installed using a filter holder (FHM1). We also offer other optomechanical mounting solutions. LBTEK provides customization services for 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

Neutral Density Filter, Round, Uncoated, Unmounted

Low power applications
Absorptive neutral density filters
Uncoated

LBTEK absorptive neutral density filters have an optical density (OD) ranging from 0.1 to 8.0, with a size of 1 inch. These filters are manufactured using Schott glass substrates that exhibit stable absorption rates across the wavelength band of 400 nm to 650 nm. All circular lenses from LBTEK can be mounted in LBTEK standard lens tubes, fixed lens holders, 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
NDFA10-15	1.5±0.075@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-13	1.3±0.065@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-09	0.9±0.045@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-08	0.8±0.04@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-07	0.7±0.035@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-06	0.6±0.03@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-04	0.4±0.02@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-02	0.2±0.01@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-01	0.1±0.005@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-80	8.0±0.40@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-70	7.0±0.35@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-60	6.0±0.30@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-50	5.0±0.25@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	7 weeks
NDFA10-40	4.0±0.20@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-30	3.0±0.15@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-20	2.0±0.10@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-10	1.0±0.05@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-05	0.5±0.025@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks
NDFA10-03	0.3±0.015@550 nm	Ø25.4 mm	400 nm-650 nm	$34.78	6 weeks

Neutral Density Filter, Round, Uncoated, Mounted

Low power applications
Absorptive neutral density filters
Mounted in mechanical housing, detachable

The LBTEK absorptive neutral density filters have an optical density (OD) ranging from 0.3 to 8.0, with a size of 1 inch. These filters are manufactured using Schott glass substrates that exhibit stable absorption rates across the wavelength band of 400 nm to 650 nm. The MNDFA series of absorptive neutral density filters come mounted in detachable standard lens tubes, with the surface engraved with product model, operating wavelength, OD value, and other parameters for easy identification by users. 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.

Filters can be installed into other mechanical components with SM1 threads.

Product Model	OD	Diameter	Operating Wavelength	Unit Price	Lead Time
MNDFA10-80	8.0±0.40@550 nm	Ø25.4 mm	400 nm-650 nm	$39.88	6 weeks
MNDFA10-70	7.0±0.35@550 nm	Ø25.4 mm	400 nm-650 nm	$39.88	6 weeks
MNDFA10-60	6.0±0.30@550 nm	Ø25.4 mm	400 nm-650 nm	$39.88	6 weeks
MNDFA10-50	5.0±0.25@550 nm	Ø25.4 mm	400 nm-650 nm	$39.88	7 weeks
MNDFA10-40	4.0±0.20@550 nm	Ø25.4 mm	400 nm-650 nm	$39.88	6 weeks
MNDFA10-30	3.0±0.15@550 nm	Ø25.4 mm	400 nm-650 nm	$39.88	6 weeks
MNDFA10-20	2.0±0.10@550 nm	Ø25.4 mm	400 nm-650 nm	$39.88	6 weeks
MNDFA10-10	1.0±0.05@550 nm	Ø25.4 mm	400 nm-650 nm	$39.88	6 weeks
MNDFA10-05	0.5±0.025@550 nm	Ø25.4 mm	400 nm-650 nm	$39.88	6 weeks
MNDFA10-03	0.3±0.015@550 nm	Ø25.4 mm	400 nm-650 nm	$39.88	6 weeks

Neutral Density Filter, Rectangular, Uncoated, Unmounted

Low power applications
Rectangular neutral density filters
Uncoated

The LBTEK absorptive neutral density filters have an optical density (OD) range of 0.1-6.0 and come in a square size of 50.8 mm. These filters are manufactured using Schott glass substrates that exhibit stable absorption rates across the wavelength band of 400 nm to 650 nm. The rectangular filters with a side length of two inches can be mounted using a filter holder (FHM1). 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 FHM1

Product Model	OD	Size	Operating Wavelength	Unit Price	Lead Time
NDFAS20-60	6.0±0.30@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-50	5.0±0.25@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-40	4.0±0.20@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-30	3.0±0.15@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-20	2.0±0.10@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-15	1.5±0.075@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-13	1.3±0.065@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-10	1.0±0.05@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-09	0.9±0.045@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-08	0.8±0.04@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-07	0.7±0.035@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-06	0.6±0.03@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-05	0.5±0.025@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-04	0.4±0.02@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-03	0.3±0.015@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-02	0.2±0.01@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks
NDFAS20-01	0.1±0.005@550 nm	50.8 mm×50.8 mm	400 nm-650 nm	$76.75	6 weeks

Absorptive Neutral Density (ND) Filters, Uncoated