Active Member
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[China]
Address: 605, No. 89, Jilong Road, Pudong New Area, Shanghai, China
Contact name:Pan
MAP(SHANGHAI) OPTICS CO.,LTD |
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Offered B270® (White Glass) or BK7 UV/VIS Bandpass & Laser Line Filters: 340 - 694.3 nm Center Wavelength
Transmission curves for individual filters are available by viewing the Spec sheet for an individual filter. Each filter is mounted in an unthreaded black anodized aluminum ring with an outer diameter of Ø1/2" or Ø1" and a maximum edge thickness of 6.3 mm.
Bandpass filters provide one of the simplest ways to transmit a well-defined wavelength band of light, while rejecting other unwanted radiation. Their design is essentially that of a thin film Fabry-Perot Interferometer formed by vacuum deposition techniques and consists of two reflecting stacks, separated by an even-order spacer layer. These reflecting stacks are constructed from alternating layers of high and low refractive index materials, which can have a reflectance in excess of 99.99%. By varying the thickness of the spacer layer and/or the number of reflecting layers, the central wavelength and bandwidth of the filter can be altered.
This type of filter displays very high transmission in the bandpass region, but the spectral range of blocked light on either side of the bandpass region is narrow. To compensate for this, an additional blocking component is added, which is either an all dielectric or a metal-dielectric depending on the requirements of the filter. Although this additional blocking component will eliminate any unwanted out-of-band radiation, it also reduces the filter's overall transmission throughput. For applications with demanding wavefront requirements, such as imaging, please consider our premium bandpass filters.
Attention
Do not use filter with high power laser and high energy pulsed
laser. We can provide pulse laser use dichroic filters, please
contact our Sales Division.
▶If the reflecting light of the filter is used, the transmittance
and the reflectance value may change in accordance to the angle of
incident.
▶The color may appears different than expected at 45 degrees angle
of incidence, therefore to obtain the sharp color, please use it a
0 degree.
Parameters
Processing capacity
| Material | B270® (White Glass) or BK7 |
| Mount Diameter Tolerance | +0/-0.2mm |
| Clear Aperture | >80% |
| Thickness | <10mm |
| CWL Tolerance | ±2nm |
| FWHM | 10±2nm |
| Peak Transmission | >45% |
| Block | <0.1%@200-1100nm |
| CWL Shift | <0.02nm/℃ |
We offer more transportation options
FAQ
A: Optical lens,mirrors,windows,filters,prisms
A: In general delivery time is about one month for custom produced optics.except stock ones or some special optics.
A: We can provide free samples if we have stock optics as your request,while custom produced samples are not free.
MOQ is 10pcs for most of the optics, while MOQ could be only one piece if you need a element in big dimention.
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