NDフィルター、マウント無し、ARコーティング付き : 650~1050 nm


  • Ø1/2" and Ø25 mm Versions Available
  • AR Coated for 650 to 1050 nm
  • Optical Densities at 633 nm Prior to Coating: 0.1 to 6.0
  • Ideal for Low-Power Applications (<1 W)

NE20B-B

(Ø25 mm)

NE550B-B

(Ø1/2")

Application Idea

NE505B-B Mounted in LMR05

Related Items


Please Wait
Neutral Density Filter
Selection Guide
Absorptive
Uncoated
(400 - 650 nm)
Mounted
Unmounted
Uncoated
(1000 - 2600 nm)
Mounted
Unmounted
AR Coated
(350 - 700 nm)
Mounted
Unmounted
AR Coated
(650 - 1050 nm)
Mounted
Unmounted
AR Coated
(1050 - 1700 nm)
Mounted
Unmounted
Variable
Reflective
UV Fused Silica
(200 - 1200 nm)
Mounted
Unmounted
N-BK7
(350 - 1100 nm)
Mounted
Unmounted
ZnSe
(2 - 16 µm)
Mounted
Unmounted
Wedged UVFS (200 - 1200 nm)
Wedged N-BK7 (350 - 1100 nm)
Wedged ZnSe (2 - 16 µm)
Variable
Neutral Density Filter Kits

Optic Cleaning Tutorial
ND Filter Manufacturing
Click to Enlarge

NDフィルタの作製に使用される当社の研削機の1つ

特長

  • 近赤外光を減衰(650~1050 nmスペクトル対応のARコーティング)
  • 633 nmにおけるARコーティング前の光学濃度:0.1~6.0
  • マウント無しØ12.7 mm(Ø1/2インチ)およびØ25 mmから選択可能
  • ARコーティングにより、光学システムでの後方反射を低減
  • 低出力の用途に適した製品(< 1 W)

当社は、両面に650~1050 nmスペクトル対応の広帯域ARコーティングが施された、最も一般的なマウント無し吸収型NDフィルタをご提供しています。 これらのフィルタは、マウント付き350~700 nmスペクトル対応の広帯域ARコーティング付きでもご用意しています。 詳細は、下にある「セレクションガイド」をご覧ください。

フィルタに施された、高性能多層広帯域Bコーティングは、波長範囲650~1050 nmで表面反射率が最小となるよう設計されているため、迷光が低減されます。 これらのコーティングは、光がフィルタ表面に垂直入射する場合に、指定された波長域にわたって0.5%未満の平均反射率をご提供します。下表の青いInfoアイコン()をクリックすると典型的な透過率データをご覧いただけます。

金属NDフィルタとは異なり、吸収型NDフィルタはSchott社製ガラス(詳細は「仕様」 タブを参照)から加工されています。 どのSchott社製ガラスも、平坦な吸収係数を持つスペクトル特性となっています。使用するガラスのタイプや厚さを変えることによって、4種類のSchott 社製ガラスから全ての吸収型NDフィルタを製造しています。 当社のARコーティング吸収型NDフィルタで得られた平均透過率の詳細については、下記の詳細情報をご参照ください。

光学濃度と透過率
光学濃度(OD)は光学フィルタによりもたらされる減衰率、つまり入射ビームの光パワーをどれだけ減少させるかを示しています。光学濃度(OD)は透過率Tの関数として次の方程式で表されます。

Optical Density Equation

Tは0から1の間の値です。光学濃度の高いNDフィルタ(吸収型)を選択した場合、入射光の吸収率は高く、透過率は低くなります。透過率を高く、吸収率を低くするためには、低い光学濃度のNDフィルタが適切と言えます。例えば、光学濃度2のフィルタでは透過率が0.01であり、フィルタは入射ビームのパワーを1%まで減衰させるという結果になります。当社のNDフィルタの透過率のデータは、パーセント(%)で表示されています。

この製品は、レーザ用安全保護具としてはご利用いただけません。当社では、安全に実験を行っていただくために、迷光の照射を著しく低減できるビームブロックなど、安全保護具や遮光用製品をご用意しております。

Bコーティング付きNDフィルタの透過率と光学濃度。凡例内の値は、各フィルタの633 nmにおけるARコーティング前の光学濃度(典型値)。青色の網掛け部分はARコーティングの仕様波長範囲を示します。
Optical
Density
(OD)a
OD
Tolerancea
SubstrateSubstrate
Thicknessb
Ø1/2"
Item #
Ø25 mm
Item #
0.1±0.01NG110.6 mmNE501B-BNE01B-B
0.2±0.01NG111.4 mmNE502B-BNE02B-B
0.3 ±0.015NG112.3 mmNE503B-BNE03B-B
0.4 ±0.02NG40.7 mmNE504B-BNE04B-B
0.5±0.025NG40.9 mmNE505B-BNE05B-B
0.6 ±0.03NG41.1 mmNE506B-BNE06B-B
0.7 ±0.04NG41.3 mmNE507B-BNE07B-B
0.8 ±0.05NG41.5 mmNE508B-BNE08B-B
0.9 ±0.05NG41.7 mmNE509B-BNE09B-B
1.0 ±0.05NG41.9 mmNE510B-BNE10B-B
1.3 ±0.065NG42.5 mmNE513B-BNE13B-B
1.5 ±0.08NG42.9 mmNE515B-BNE15B-B
2.0 ±0.1NG91.4 mmNE520B-BNE20B-B
3.0 ±0.15NG92.1 mmNE530B-BNE30B-B
4.0 ±0.2NG92.8 mmNE540B-BNE40B-B
5.0 ±0.25NG93.6 mmNE550B-BNE50B-B
6.0 ±0.3NG11.5 mmNE560B-BNE60B-B
  • ARコーティングを行う前に633 nmで測定。各フィルタの典型的な透過率のグラフについては下の表をご覧ください。
  • 値は典型値です。NDフィルタの実際の厚みはNDフィルタに使われるガラスの光学濃度によって決まります。光学濃度はNDフィルタの製造ロットによります。
General Specifications
Diameter12.7 mm25.0 mm
Diameter Tolerance+0.00 / -0.25 mm
Clear Aperture> Ø11.43 mm> Ø20.0 mm
AR Coating Range650 - 1050 nm
Reflectance (Average)< 0.5% per Surfacea
Surface Quality60-40 Scratch-Dig
Parallelism< 10 arcsec
For OD < 1.3
Transmitted Wavefront Error (TWE) < λ/4 (@ 633 nm) < λ/4 (@ 633 nm)
For OD ≥ 1.3
Surface Flatness < λ/4 (@ 633 nm)-
Transmitted Wavefront Error (TWE) -< λ/4 (@ 633 nm)
  • 入射角0°での値
B AR Coating
Click to Enlarge

生データはこちらからダウンロードいただけます。
青色の網掛け部分は、1面あたりの平均反射率が0.5%未満のARコーティングが施された650~1050 nmの波長範囲を示しています。

Posted Comments:
Guodong Peng  (posted 2023-08-17 09:55:22.78)
The anti-reflection ND filters are very useful in machine vision, reducing the amount of stray light and enhancing image quality. But there are too few size options, only providing Ø1/2" and Ø25 mm. In industry applications, the clear aperture of lens are usually 30~40 mm. Is there any possibility that you provide anti-reflection ND filters with a diamter of 33 mm?
jpolaris  (posted 2023-08-17 05:43:01.0)
Thank you for contacting Thorlabs. Requests for customizations such as larger-diameter versions of our optics can be made by emailing us at techsupport@thorlabs.com. I have reached out to you directly to discuss the feasibility of this request.
Shadia Chowdhury  (posted 2023-02-16 10:25:43.867)
Dear Sir/Madam, Is there any polarization-dependent loss of these filters? If yes can you please specify it? Because the purpose I bought these filters is polarization sensitive, that is why I need to know exactly how much the polarization changes during the transmission of the laser beam. Thanks
cdolbashian  (posted 2023-02-17 11:08:00.0)
Thank you for reaching out to us with this inquiry. These absorptive filters are made from isotropic NG4 glass. Besides the expected effects derived from the Fresnel equations, you should not expect to see any phase/polarization-related effects. I have reached out to you directly to discuss your concerns and application.
Bob Wang  (posted 2022-09-30 08:33:29.56)
Following up on the comment about the damage thresholds below, we are planning on using an even higher power laser. The average power can reach 1.5 W and the peak power 180 kW. The pulse width is 100 fs and repetition is 80 MHz. We are planning to use these filters to reduce the power output immediately upon laser output, where the beam diameter is 2 mm. Can this product withstand fluences that high? If not, can you recommend one of your products that can? Thanks!
cdolbashian  (posted 2022-10-31 01:08:21.0)
Thank you for reaching out to us with this inquiry Bob! Unfortunately though, we have not tested our optics under high speed pulses such as these. At this time, we cannot really say for sure whether or not our filters would be damaged by such a source. Alternatively, perhaps you would consider our wedged beamsplitter, which produces multiple refracted beams of different fractional amounts of the source beam, and is designed for higher-power lasers. (https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_ID=6249)
Cristina Amaya  (posted 2022-06-21 16:20:10.673)
Dear Thorlabs team, can you recommend me which lens mount to use to mount the NE20B-B filter (25 mm in diameter)? Can I use for example a 1" mount and retaining rings to fix it? Best regards,
jdelia  (posted 2022-06-22 12:56:52.0)
Thank you for contacting Thorlabs. The NE20B-B can be mounted in the LMR1(/M) and held in place using the included SM1RR retaining ring.
Giuseppe Napolano  (posted 2022-03-08 09:50:03.3)
I noticed that damage thresholds are not available for these ND filters. Are the filters suitable for high frequency lasers, e.g. 50kHz? I was considering a 905nm laser, with 2.5ns pulse length, 28W peak power, 3.5 mW average power, 85umx10um spot.
jdelia  (posted 2022-03-09 03:53:43.0)
Thank you for contacting Thorlabs. Based on the information you have provided, it should be fine to use your laser with these filters.
Jindřich Vondruška  (posted 2021-10-01 03:51:37.59)
The RoHS certificate is not available! Pleas repair it.
YLohia  (posted 2021-10-11 02:51:04.0)
Thank you for contacting Thorlabs. The RoHS certificate has been repaired and reuploaded.
Linas Svilainis  (posted 2021-05-28 10:13:14.517)
Damage threshold for NE510B-B ...NE530B-B series is not given. Does it means that there is no LIDT for these ND filters?
YLohia  (posted 2021-06-09 02:26:59.0)
Thank you for contacting Thorlabs. That's correct, we currently do not have LIDT for these filters. While we don't have formal damage thresholds for these, given the low average power, we would expect these filters to be fine for your input specs of 905 nm, 120 W peak, 100 ns, 10 Hz, 220 um x 10 um spot
jochen.philippi  (posted 2014-09-24 16:05:02.983)
Where can i find the refraction index of NE60B-B near 1000um wavelength ? Thanks ! Jochen
jlow  (posted 2014-09-25 09:09:50.0)
Response from Jeremy at Thorlabs: The glass used in the filter is NG1 from Schott. I will contact you directly for this info.
Back to Top

Ø12.7 mm(1/2インチ) NDフィルタ、マウント無し、ARコーティング付き : 650~1050 nm

Item #Transmission DataaOD at 633 nmbThicknessc
NE510B-Binfo1.0 ± 0.051.9 mm
NE513B-Binfo1.3 ± 0.0652.5 mm
NE515B-Binfo1.5 ± 0.082.9 mm
NE520B-Binfo2.0 ± 0.11.4 mm
NE530B-Binfo3.0 ± 0.152.1 mm
NE540B-Binfo4.0 ± 0.22.8 mm
NE550B-Binfo5.0 ± 0.253.6 mm
NE560B-Binfo6.0 ± 0.31.5 mm
Item #Transmission DataaOD at 633 nmbThicknessc
NE501B-Binfo0.1 ± 0.010.6 mm
NE502B-Binfo0.2 ± 0.011.4 mm
NE503B-Binfo0.3 ± 0.0152.3 mm
NE504B-Binfo0.4 ± 0.020.7 mm
NE505B-Binfo0.5 ± 0.0250.9 mm
NE506B-Binfo0.6 ± 0.031.1 mm
NE507B-Binfo0.7 ± 0.041.3 mm
NE508B-Binfo0.8 ± 0.051.5 mm
NE509B-Binfo0.9 ± 0.051.7 mm
  • フィルタの典型的な透過特性グラフは、青いInfoアイコンをクリックするとご覧いただけます。
  • ARコーティングを行う前に測定。典型的な性能については、透過率データのグラフをご覧ください。
  • この表にある数値は典型値です。 NDフィルタの実際の厚みはNDフィルタに使われるガラスの光学濃度によって決まります。光学濃度はNDフィルタの製造ロットによります。
+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
NE501B-B Support Documentation
NE501B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.1
¥6,162
7-10 Days
NE502B-B Support Documentation
NE502B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.2
¥6,162
Today
NE503B-B Support Documentation
NE503B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.3
¥6,162
7-10 Days
NE504B-B Support Documentation
NE504B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.4
¥6,162
Today
NE505B-B Support Documentation
NE505B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.5
¥6,162
7-10 Days
NE506B-B Support Documentation
NE506B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.6
¥6,162
Today
NE507B-B Support Documentation
NE507B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.7
¥6,162
7-10 Days
NE508B-B Support Documentation
NE508B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.8
¥6,162
7-10 Days
NE509B-B Support Documentation
NE509B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.9
¥6,162
7-10 Days
NE510B-B Support Documentation
NE510B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 1.0
¥6,162
Today
NE513B-B Support Documentation
NE513B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 1.3
¥6,162
7-10 Days
NE515B-B Support Documentation
NE515B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 1.5
¥6,162
7-10 Days
NE520B-B Support Documentation
NE520B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 2.0
¥6,162
7-10 Days
NE530B-B Support Documentation
NE530B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 3.0
¥6,162
7-10 Days
NE540B-B Support Documentation
NE540B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 4.0
¥6,162
7-10 Days
NE550B-B Support Documentation
NE550B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 5.0
¥6,162
7-10 Days
NE560B-B Support Documentation
NE560B-BØ1/2" Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 6.0
¥6,162
7-10 Days
Back to Top

Ø25 mm NDフィルタ、マウント無し、ARコーティング付き : 650~1050 nm

Item #Transmission DataaOD at 633 nmbThicknessc
NE10B-Binfo1.0 ± 0.051.9 mm
NE13B-Binfo1.3 ± 0.0652.5 mm
NE15B-Binfo1.5 ± 0.082.9 mm
NE20B-Binfo2.0 ± 0.11.4 mm
NE30B-Binfo3.0 ± 0.152.1 mm
NE40B-Binfo4.0 ± 0.22.8 mm
NE50B-Binfo5.0 ± 0.253.6 mm
NE60B-Binfo6.0 ± 0.31.5 mm
Item #Transmission DataaOD at 633 nmbThicknessc
NE01B-Binfo0.1 ± 0.010.6 mm
NE02B-Binfo0.2 ± 0.011.4 mm
NE03B-Binfo0.3 ± 0.0152.3 mm
NE04B-Binfo0.4 ± 0.020.7 mm
NE05B-Binfo0.5 ± 0.0250.9 mm
NE06B-Binfo0.6 ± 0.031.1 mm
NE07B-Binfo0.7 ± 0.041.3 mm
NE08B-Binfo0.8 ± 0.051.5 mm
NE09B-Binfo0.9 ± 0.051.7 mm
  • フィルタの典型的な透過特性グラフは、青いInfoアイコンをクリックするとご覧いただけます。
  • ARコーティングを行う前に測定。典型的な性能については、透過率データのグラフをご覧ください。
  • この表にある数値は典型値です。 NDフィルタの実際の厚みはNDフィルタに使われるガラスの光学濃度によって決まります。光学濃度はNDフィルタの製造ロットによります。
+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
NE01B-B Support Documentation
NE01B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.1
¥9,685
7-10 Days
NE02B-B Support Documentation
NE02B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.2
¥9,685
7-10 Days
NE03B-B Support Documentation
NE03B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.3
¥9,390
Today
NE04B-B Support Documentation
NE04B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm,OD: 0.4
¥9,685
Today
NE05B-B Support Documentation
NE05B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.5
¥9,685
Today
NE06B-B Support Documentation
NE06B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.6
¥9,685
7-10 Days
NE07B-B Support Documentation
NE07B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.7
¥9,685
Today
NE08B-B Support Documentation
NE08B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.8
¥9,685
Today
NE09B-B Support Documentation
NE09B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 0.9
¥9,685
7-10 Days
NE10B-B Support Documentation
NE10B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 1.0
¥9,390
Today
NE13B-B Support Documentation
NE13B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 1.3
¥9,685
Today
NE15B-B Support Documentation
NE15B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 1.5
¥9,685
7-10 Days
NE20B-B Support Documentation
NE20B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 2.0
¥9,390
Today
NE30B-B Support Documentation
NE30B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 3.0
¥9,685
Today
NE40B-B Support Documentation
NE40B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 4.0
¥9,685
Today
NE50B-B Support Documentation
NE50B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 5.0
¥9,685
Today
NE60B-B Support Documentation
NE60B-BØ25 mm Neutral Density Filter, AR Coated: 650 - 1050 nm, OD: 6.0
¥9,685
Today