Custom optical filters are available for applications such as bandpass filters, long wave pass (LWP) filters, short wave pass (SWP) filters, neutral density filters and more.

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Intlvac provides anti-reflection (AR) coatings for a wide range of substrates and applications across the VIS, NIR, SWIR, and MWIR spectral regions.

Below are examples of a few of these coatings.

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1. SINGLE AND MULTI BANDPASS FILTERS

Coating Description

A bandpass filter is designed to transmit energy only within a selected band of wavelengths in the spectrum and to reject all other wavelengths

Durability Performance

• Adhesion
• Severe abrasion,
• 
  Humidity as per the following (where applicable): MIL-C-675, MIL-M-13508, MIL-M-14806, MIL-C-48497, MIL-F-48616, MIL-STD-810F

2. LONG WAVE PASS (LWP) FILTERS

Coating Description

A long-wavelength pass filter transmits energy at wavelengths longer than the cut-on wavelength while energy at wavelengths shorter than the cut-on is attenuated.

Durability Performance

• Adhesion
• Severe abrasion
• 
  Humidity as per the following (where applicable): MIL-C-675, MIL-M-13508, MIL-M-14806, MIL-C-48497, MIL-F-48616, MIL-STD-810F

3. SHORT WAVE PASS (SWP) FILTERS

Coating Description

A short-wavelength pass filter transmits energy at wavelengths shorter than the cut-off wavelength while energy at wavelengths longer than the cut-off is attenuated.

Durability Performance

• Adhesion
• Severe abrasion
• 
  Humidity as per the following (where applicable): MIL-C-675, MIL-M-13508, MIL-M-14806, MIL-C-48497, MIL-F-48616, MIL-STD-810F

4. NEUTRAL DENSITY FILTERS

Neutral density (ND) coatings are designed to attenuate incident flux. In their simplest form, the thickness of a single metallic layer is adjusted to achieve the prescribed transmittance.

5. DICHROIC BEAMSPLITTER

6. FLUORESCENCE LENSES

7. RAMAN REJECT FILTERS

For more information about creating a custom solution for your application contact sales@intlvac.com