Product Descriptions :
| Characteristics: | 760nm Longpass Filter |
| Type: | Interference type Filter |
| Central Wavelength (CWL): | 760nm ± 5nm |
| Peak Transmittance(%) : | >90% |
| Optical Density (OD): | OD2-OD3 |
| Shape: | Round or customized |
| Color: | Silver |
| Surface Quality: | 60/40 scratch-dig or specified |
| Dimension(mm): | Diameter 200mm |
| Thickness(mm): | 2.0mm or customized. |
| Substrate: | Ultra-clear glass,K9,BK7,B270,D2637T, Quartz Glass(Fused Silica) or other specified |
| Remark：The appearance color of the optical filter is usually determined by the spectral parameters, and the interference type filter varies at different angles, the pictures in this link may have been taken from different angles, so the actual color should be based on the final spectral parameters required！ | |
Measured Spectral curve
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Picture 1: LP760-1800nm Spectral Curve |
What is typical application for 760nm Longpass Filters?
What is key parameter when choose for right Infrared longpass filter?
When selecting a Longpass Filter, normally the following factors need to be taken into consideration：
- Cut-Off Wavelength: it is one of the most important parameters, typically defined as the wavelength transmittance at 50% .
- Average or Peak transmittance: usually average transmittance ≥90%, higher transmittance e.g. 92% or 95% on average or specific single point need to definite and communicate with manufacturer, higher transmittance need to additional AR coating.
- Blocking rate: usually expressed in terms of optical density(OD), OD2-OD3 for standard and higher will be OD4-OD6 per requirement
- Angle of Incidence (AOI): AOI need to be consider as Interference Filter is angle sensitive, 0° AOI by default, other AOI e.g. 30/45° need to be specified.
- Physical and environmental requirement: Substrate type, dimensions and thickness, surface quality, and environmental durability.
Related products:
700nm Longpass Filter,LP700nm Long-wavelength pass Filter, Support customized
900-1800nm Longpass Filter,LP900-1800nm Long-wavelength pass Filter, Support customized
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Remark：The appearance color of the optical filter is usually determined by the spectral parameters, the interference type filter varies at different angles, and the pictures in this link may have been taken from different angles, so the actual color should be based on the final spectral parameters required！
