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Document & Download
Thank you for your cooperation in filling out the inquiry form.
This is a download page for product introductions and characteristic documents.
* Please be noted documents might be changed without notice.
Standard product drawing
| Code No. |
Diameter D1 |
Diameter D2 |
Center Thickness tc |
Clear Aperture φ |
Focal Length f |
Back Focal Length fb |
Back shape | Material Glass |
|---|---|---|---|---|---|---|---|---|
| 13.0±0.3 | ー | 4.69±0.2 | 10 | 12.7 | 9.6 | Plano | B270 equivalent | |
| 27.0±0.2 | ー | 12.0±0.2 | 25 | 19.1 | 11.2 | Plano | B270 equivalent | |
| 29.9±0.2 | 27.8 | 11.0±0.3 | 27 | 26.6 | 19.4 | Plano | B270 equivalent | |
| 32.0±0.2 | ー | 14.3±0.2 | 30 | 21.9 | 12.5 | Plano | B270 equivalent | |
| 34.3±0.2 | 33.9 | 13.0±0.2 | 32 | 28.0 | 19.5 | Plano | B270 equivalent | |
| 49.5±0.3 | ー | 19.5±0.2 | 47 | 39.2 | 26.4 | Plano | B270 equivalent | |
| 51.8±0.2 | 50 | 12.8±0.2 | 49 | 60.0 | 51.6 | Plano | B270 equivalent |
Data book
This is a document that summarizes the spectral transmittance and characteristics of various optical glass filters.
- ・Leaflet
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This is a leaflet distributed at exhibitions. Spectral transmittance and a table of various characteristics are included. (A4 6 pages)
- *The following product information is not included.
- Moldable UV transmitting glass (IHU250H) / Opal diffusing glass (IOP series) / Wavelength calibration filter (Holmium filter) IRE005
- ・General data book (set)
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The following sheets for each glass material are combined into one data book.
- ・Gerneral data book (of each glass type)
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This is a PDF file that includes spectral transmittance graph, numerical values, and material composition.
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Heat absorbing filter (ISK series)
ISK150,153,157,167,171,370
UV sharp cut filter (ITY series)
ITY385,418,425,430
UV transmitting filter (IHU series)
IHU250H,310,340,350
Blue filter (IEC series)
IEC501,508,518,578
UV transmitting, Visible absorbing filter (IUV series)
IUV340,360,365
IR transmitting filter (IIR-SF1, SF2)
IIR-SF1,SF2
Glossary
(This is a document that explains and supplements the items listed on each page.)
Characteristic table
This is a table of properties of new glass materials ·of products under development and currently promoting new materials.
- ・Moldable UV Transmitting Glass IHU250H
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Thickness calculation sheet
Transmittance of our glass filter can be calculated by changing the thickness.
Please take it as a reference while considering thickness besides standard.
Note 1) This download file is Excel data that allows you to simulate optical characteristics by changing the thickness. (Compatible with Excel2000 or later)
Because it contains macros, please save it to your desktop before using. Please be noted the file is updated irregularly.
Note2）Spectral characteristics shown on this website are nominal values.
The transmission curves can be calculated for a given thickness and are for reference purpose only.
Spectral characteristics shown here are measured at room temperature (25degrees C, 50% relative humidity)
UV transmitting filter (IHU series)
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Item IHU290 IHU310 IHU340 IHU350 Transmittance with
thickness calculation
UV sharp cut filter (ITY series)
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Item ITY385 ITY418 ITY425 ITY430 Transmittance with
thickness calculation
UV transmitting, Visible absorbing filter (IUV series)
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Item IUV340 IUV355 IUV360 IUV365 IUV380W Transmittance with
thickness calculation
Blue filter (IEC series)
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Item IEC131K IEC501S IEC508 IEC518 IEC578 Transmittance with
thickness calculation
Blue filter (IEB, IVB series)
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Item IEB400 IEB470 IEB490 Transmittance with
thickness calculation
Green filter (IVG series)
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Item IVG530 IVG540 IVG550 Transmittance with
thickness calculation
Heat absorbing filter (ISK series)
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Item ISK150 ISK153 ISK157 ISK167 ISK171 ISK370 Transmittance with
thickness calculation
IR transmitting filter (IIR-SF1, SF2)
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Item IIR-SF1 IIR-SF2 Transmittance with
thickness calculation
Light balancing filter (ILA, ILB series)
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Item ILA400 ILB90 Transmittance with
thickness calculation
Neutral density filter (IND series)
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Item IND10 IND30 IND40 IND60 Transmittance with
thickness calculation