640nm Narrow Band Filter
PRODUCT CATEGORIES
640nm visible narrow band filter is one of the optical application schemes of laser ranging filter. Compared with photoelectric rangefinder, laser rangefinder can not only work day and night, but also improve the ranging accuracy due to the characteristics of good monochromaticity and strong directionality of laser and the semiconductor integration of electronic circuits.
Technical parameters
| Items | Parameters |
|---|---|
| Center wavelength | 640nm+-2nm |
| Half peak bandwidth | 35nm |
| Peak transmittance | > 90% (according to customer demand) |
| Product size | 3mm-80mm (customizable) |
| Incident angle | 0° |
| Cut off wavelength | 200nm-1100nm (according to the customer requirements) |
| Cut off depth | >OD4-OD6 UV-NIR |
| Product material | optical grade glass (K9, BK7, B270, d263t, JGS1, color glass, float glass, etc.) |
| Surface quality | national standard grade III /American Standard 60-40 |
Note:
The above parameters are for reference only. For detailed 640nm filter parameters, please consult our online customer service personnel or call our company.
spectral curve
In addition, We can customize the optical laser filters according to customer requirements or drawings.
For details, please consult:
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