Description
Ealing 35-3441 Bandpass Optical Filter 478.87nm 25.4mm 1" Dia 7.15nm HBW
Dielectric interference bandpass filter designed to isolate the cadmium spectral line at 478.87 nm. Transmits blue light in a narrow band while blocking other wavelengths, with 50% peak transmission and 7.15 nm half bandwidth.
Specifications & What's Included
- Center Wavelength: 478.87 nm (blue visible region)
- Half Bandwidth (HBW): 7.15 nm
- Peak Transmission: 50%
- Diameter: 25.4 mm (1 inch)
- Mount: Black anodized ring mount
- Filter Type: Dielectric interference bandpass
- Includes original Ealing plastic storage case and factory spectral test chart (dated 8/21/84)
Applications
Bandpass filters of this type are used in spectroscopy, fluorescence microscopy, and analytical instrumentation for wavelength-specific light isolation. The cadmium line filter was common in atomic spectroscopy and calibration setups. Compatible with standard 25.4 mm optical filter mounts and holders used in laboratory and industrial optical systems.
Condition: Used
This Ealing 35-3441 Visible Bandpass Optical Filter has been inspected and is in good condition. The filter glass is clear with no visible chips, cracks, or coating damage. The black anodized ring mount shows minor surface wear consistent with lab handling. It comes in its original Ealing foam-lined plastic storage case, which is intact and closes securely. Also included is the original Ealing Corp factory spectral test chart, handwritten and dated 8/21/84, confirming the measured center wavelength, half bandwidth, and peak transmission for this specific filter. Please view our photo set and contact us if you have any questions.
This Ealing 35-3441 Visible Bandpass Optical Filter has been inspected and is in good condition. The filter glass is clear with no visible chips, cracks, or coating damage. The black anodized ring mount shows minor surface wear consistent with lab handling. It comes in its original Ealing foam-lined plastic storage case, which is intact and closes securely. Also included is the original Ealing Corp factory spectral test chart, handwritten and dated 8/21/84, confirming the measured center wavelength, half bandwidth, and peak transmission for this specific filter. Please view our photo set and contact us if you have any questions.
Warranty Information
We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information
Brand: |
Ealing |
Model: |
35-3441 |
MPN: |
35-3441-CN1 |
Type: |
Visible Bandpass Optical Filter |
SKU: |
27400 |
Filter Type: |
Dielectric Interference Bandpass |
Center Wavelength: |
478.87 nm |
Half Bandwidth (HBW): |
7.15 nm |
Peak Transmission: |
50% |
Diameter: |
25.4 mm (1 inch) |
Application: |
Cadmium (Cd) spectral line isolation |
Spectral Region: |
Visible (Blue) |
Mount: |
Black anodized ring mount |
Condition: |
Used – Inspected, includes original case and factory test chart |
Seller Notes: |
Includes original Ealing plastic storage case and factory spectral test chart dated 8/21/84 |
Country/Region of Manufacture: |
United States |
Compatible With: |
Standard 25.4mm (1") optical filter mounts and holders |
Condition Notes: |
Ealing 35-3441 Visible Bandpass Optical Filter inspected and in good condition. Filter glass clear, no chips or coating damage. Minor wear on ring mount. Includes original Ealing storage case and factory spectral test chart dated 8/21/84. |
