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If you cannot find the information you need in the following section, feel free to Contact us. We will reply as soon as possible.
Q1: How do I order customized optical filters?
A1: Ordering customized optical filters can be done using our online ordering form. We will reply in a business day by email, fax, or phone.
Q2: I would like to use filters under high temperatures.
A2: Generally our Narrow Band pass filters can work under 158F
(70C) but total performance of most filters weakens under high temperature.
It is difficult to define whether the condition is perfectly safe
or not. Therefore it is important to protect them with anti-heat components
(ex: our Super Cold Filters or cooling fans).
If there are a must to work under high temperature, such as 300 degree C or more, please feel free to contact us.
Q3: Do your filters deteriorate under strong UV rays?
A3: UV rays harm especially the filter glue for cementing type. How it affects depends on the time of radiation and rays intensity. Please contact us as we have various alternatives to solve this problem such as filter units without glue or anti-UV filter units.
Q4: The spectral performance I measured is lower than the attached data provided by Mega-9.
A4: First, please confirm that the filter is set at the right angles against the light. All filter data are measured under the condition where our filters are used at the specified angles. Bandpass filters are made of dielectric multi-layer thin films where spectral properties tend to shift to shorter wave region, causing transmittance average rates to go down if the incident angle is leaned. Second, please make sure the incident light is a paralell beam, not a conic beam.
Q5: Do you accept credit cards?
A5: Yes. We accept PayPal payment or Credit Card payment through PayPal.