Coated Heat Absorbing Glass Shortpass Filters
Coated Heat Absorbing Glass Shortpass Filters
Heat absorbing glass shortpass filters reduce the heat transmitted through an optical system. They have high transmission in the visible wavelength region and absorb in the IR wavelength region, making them also useful as a shortpass filter. They are made with high quality heat absorbing glass and are coated for better resistance to humid environments.
- Absorbs infrared (IR) wavelengths
- Can be used as a short-pass filter
- Coated for better resistance to humid environments See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | FR-KG3-CHeat Absorbing Glass Filter, Coated, Ø12.7 mm, IR Cut-off, KG3 | In Stock | ||||
 | FSR-KG1-CHeat Absorbing Glass Filter, Coated, Ø25.4 mm, IR Cut-off, KG1 | In Stock | ||||
 | FSR-KG2-CHeat Absorbing Glass Filter, Coated, Ø25.4 mm, IR Cut-off, KG2 | In Stock | ||||
 | FSR-KG3-CHeat Absorbing Glass Filter, Coated, Ø25.4 mm, IR Cut-off, KG3 | In Stock | ||||
| FSR-KG5-CHeat Absorbing Glass Filter, Coated, Ø25.4 mm, IR Cut-off, KG5 | In Stock | ||||
 | FSQ-KG1-CHeat Absorbing Glass Filter, Coated, 50.8x50.8 mm, IR Cut-off, KG1 | In Stock | ||||
 | FSQ-KG2-CHeat Absorbing Glass Filter, Coated, 50.8x50.8 mm, IR Cut-off, KG2 | In Stock | ||||
 | FSQ-KG3-CHeat Absorbing Glass Filter, Coated, 50.8x50.8 mm, IR Cut-off, KG3 | In Stock | ||||
 | FSQ-KG5-CHeat Absorbing Glass Filter, Coated, 50.8x50.8 mm, IR Cut-off, KG5 | 3 Weeks |
Specifications
- TypeHeat Absorbing Shortpass Filter
- MaterialSchott KG or equivalent
- Coating TypeSiO2
- Angle of Incidence0°
- Size Tolerance±0.3 mm
- Thickness1.9 to 3.1 mm
- Thickness Tolerance±0.1 mm
- Surface Quality60-40 scratch-dig
- Wedge≤3 arc min
- Clear Aperturecentral ≥ 80% of size
- ChamfersUp to 1 mm face width
- Chamfers Angle Tolerance45° ±15°
- Edge FinishCoated
Features
Optical Filter Mounts
We offer a wide variety of optical filter mounts for securing and locating your optical filter. Popular types include:
Coated Heat Absorbing Shortpass Filters
The Colored Glass Heat Absorbing Shortpass Filters are used to protect components that are sensitive to heat generated by high intensity illumination system. They are made of heat absorbing glass that provides excellent absorption of infrared radiation and transmits visible wavelength region. These coated filters have a lower per surface reflectivity resulting in ~3% increase in transmission compared to the uncoated filters.
Coated for Better Humidity Resistance
Select color filters are made from hygroscopic material which, when exposed to a humid environment, will start to discolor. Our new colored glass filters are coated with SiO2 film that protects the hygroscopic material from humidity and prevents staining. Humidity tests were conducted per MIL-C-48497 specifications. The film layer proved intact and optical performance of the filter remained the same after the test.
