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  • Will Not Fade Like Gels or Plastic Filters
  • Multilayer Thin Film Coating on Glass Substrates
  • Also Available in Kits




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  • ガラス基板に多層薄膜コーティング
  • ゲルやプラスチック製フィルタのような褪色なし
  • Ø25.4 mm(Ø1インチ)、マウント無しのフィルタも選択可能
  • マウント付きフィルタのキットもあり

当社では耐久性に優れたダイクロイックフィルタを用意しています。プラスチック製フィルタやゲルと異なり、このフィルタのコーティングは時間が経過しても褪色せず、高い温度下でも使用可能です。当社のダイクロイックカラーフィルタは当社の Ø25 mm~Ø25.4 mm(Ø1インチ)レンズチューブ または フィルターマウントにマウント可能です。



Angle of Incidence
MaterialBorofloat Glass
Surface Quality (Scratch-Dig)80-50
Clear ApertureØ22.9 mm
Temperature Range-50 to +80 oC
DiameterØ25.4 mm +0/-0.25 mm
Thickness2 mm +0.2/-0.5 mm
Additive FiltersSubtractive Filters

> 75% avg. for 615-730 nm
< 1%% avg. for 380-550 nm
Cut-on: 585 ± 15 nm

> 85% avg. for 390-530 nm
< 1% avg. for 585-710 nm
Cut-off: 555 ± 15 nm
> 70% @ peak
< 1% avg. for 400-460 nm
Low Edge: 505 ± 15 nm
High Edge: 575 ± 15 nm
> 75% avg. for 395-440 nm
and 645-750 nm
< 1% avg. for 500-590 nm
> 85% avg. for 390-480 nm
< 1% avg. for 540-750 nm
Cut-off: 505 ± 15 nm
> 85% avg. for 550-750 nm
< 1% avg. for 410-475 nm
Cut-on: 515 ± 15 nm

下に掲載されているプロット図は、4種類の入射角(AOI)での当社のダイクロイックフィルタの波長に対する透過率を示しています。 プロット図をわかりやすくするため、4種類のAOIのみをグラフ化しています。この4種類の入射角データ以外にも、グラフ上をクリックすることによって、5o 単位(例: 0o、5o、10o、15o、20o、25o、30o、35o、40o、45o)の生データをご覧いただけます。

Posted Comments:
Doyk Hwang  (posted 2019-12-05 11:06:16.65)
Hi there, Can we place a customized order for the thinner FD1M mirrors, like 0.5 mm thickness or less? Best, Doyk
nbayconich  (posted 2019-12-11 02:27:03.0)
Thank you for contacting Thorlabs. We can offer FD1M with 0.5 mm thickness. A Techsupport representative will reach out to you directly with more information.
Brian Mittelstaedt  (posted 2019-09-26 11:48:17.103)
When using the FD1G in front of a sensor, is there a preferred orientation? Is the spectral transmission the same regardless of which side faces the sensor?
YLohia  (posted 2019-09-30 09:56:11.0)
Hello, thank you for contacting Thorlabs. The spectral transmission will be the same regardless of orientation. That said, the best practice is to orient the coated side towards the incoming beam. Coated side can be differentiated by eye by tilting the part.
jing li  (posted 2019-03-16 04:50:11.64)
Hi, I bought FD1B filter which used to make a optical device, now I need do some analog computation of the device, could you tell me the thickness and refractive index of the film deposited on the mirror? Thank you!
nbayconich  (posted 2019-03-19 09:01:43.0)
Thank you for contacting Thorlabs. Unfortuntaely we cannot share specific index values or the thickness of our coating layers for these filters.
alexis.wartelle  (posted 2019-01-22 10:10:10.24)
Hello, I would like to know how these filters behave with respect to polarization, in particular with non-zero incidence angle. Does the transmission behaviour change for polarized light, depending on the polarization direction? Besides, the magenta and green filters would be valuable to me for a setup in which green light must be separated from blue and red light. I would like to know if the reflection from the filters behaves just like one expects from the transmission curves or if there are caveats. E.g: for incoming light with red, blue and green, if the magenta filter is set in at 45°, can one hope to get all the green light deflected by 90°? Best regards
llamb  (posted 2019-01-25 01:32:03.0)
Thank you for your feedback. When the Angle of Incidence is 0°, the transmission will be the same regardless of polarization. At non-zero AOIs, the transmission will depend on the input polarization states, though we do not currently have test data regarding this. Additionally, the beam will indeed reflect when outside of the standard transmission band, which should be usable in applications similar to yours. I will reach out to you directly to discuss your application further.
mss2257  (posted 2018-05-03 15:12:47.343)
Hi, I was wondering if more details could be obtained about the engineering of the dichroic filter? I plan on using this as a substrate in a reflectance experiment, and I would like to know the thicknesses of the optical materials deposited, and their refractive indeces, for calculation purposes.
YLohia  (posted 2018-05-08 08:40:52.0)
Hello, thank you for contacting Thorlabs. Unfortunately, we cannot share the thickness of coatings or their indices of refraction since that information is proprietary.
user  (posted 2015-04-07 05:56:40.03)
Is it possible to obtain transmission data above 800nm at AOI = 0° for the red, green and blue dichroic filters ?
jlow  (posted 2015-04-14 09:43:01.0)
Response from Jeremy at Thorlabs: We can provide more information about this. Since you did not leave your contact info, can you contact us at techsupport@thorlabs.com about this please?
Greg  (posted 2009-02-05 08:22:43.0)
A response from Greg at Thorlabs to acable: Our dichroic filter sets do not currently include a storage box.
acable  (posted 2008-12-15 16:11:58.0)
Does the kit come with a storage box to organize the optics.
Laurie  (posted 2008-10-01 16:16:10.0)
Response from Laurie at Thorlabs to cpontbriand: We have just added information to our website (see the Graphs Tab) showing transmission vs. wavelength for our dichroic filters at various incident angles. I apologize that it took so long to add this information, but our coating department needed to collect this data as the information was not on file. If you have any additional questions, please feel free to contact us.
cpontbriand  (posted 2008-09-02 11:48:51.0)
To Whom it may concern, I see that your dichroic filters have applications in imaging and illumination, but the stated angle of incidence is 0 degrees. There must be some tolerance about 0 degrees, given the stated applications. What sort of useable angle of incidence should I expect to get from these filters? Thank you, Clifford Pontbriand Engineer Woods Hole Oceanographic Institution

Ø25.4 mm(Ø1インチ)ダイクロイックフィルタ、マウント無し

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
FD1B Support Documentation
FD1B加色型ダイクロイックカラーフィルタ、Ø25.4 mm、青
FD1G Support Documentation
FD1G加色型ダイクロイックカラーフィルタ、Ø25.4 mm、緑
FD1R Support Documentation
FD1R加色型ダイクロイックカラーフィルタ、Ø25.4 mm、赤
FD1C Support Documentation
FD1C減色型ダイクロイックカラーフィルタ、Ø25.4 mm、シアン
FD1M Support Documentation
FD1M減色型ダイクロイックカラーフィルタ、Ø25.4 mm、マゼンタ
FD1Y Support Documentation
FD1Y減色型ダイクロイックカラーフィルタ、Ø25.4 mm、イエロー



Item #Included Filters
FD1DFD1R, FD1G, FD1B, FD1C, FD1M, and FD1Y
+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
FD1D Support Documentation
FD1Dダイクロイックフィルターセット、Ø25.4 mmフィルタ6枚入
3-5 Days
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