• Due to the typhoon in Japan, large-scale blackout have occurred in Narita city where Misumi Shipping center is located, and the recovery is being delayed. (Newspaper article https://the-japan-news.com/news/article/0005997110 source: The Japan News) Because of the above reason, delivery of some products may be delayed. We apologize for any inconvenience and thank you for your understanding.


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· □ A bandpass filter that can be used for a large effective diameter of 45 mm or more.
· It is used to concentrate thick collimated light through a bandpass filter on a sample or to collimate the light diverging from one point and pass it through a bandpass filter with a large effective diameter.
· The use of a dielectric film has realized a sharp rise and reliable shutout of the wavelength region to be blocked.
· Available with a half-value width from 10 nm to 12 nm and a central wavelength from 400 nm to 900 nm in 10 nm increments; the necessary wavelength can be extracted over the total region of this wavelength range.
· Black coating is applied to the entire circumference to suppress the influence of the scattered light due to the glass side surface.
· A φ25 mm size interference filter (VPF-25C) and high transmittance interference filter (YIF) are available.
· * The heat-resistant temperature of this interference filter is 80 degrees or less, so do not use near lamps or in places with high temperatures.
· * This interference filter cannot be used for high output lasers or high energy pulsed lasers.
· * Interference filters are dependent on the angle of incidence, and when the angle is inclined to the optical axis, the center wavelength shifts to the short wavelength side and transmittance also decreases.
· * Have light parallel to the optical axis or nearly parallel to it at an incident angle of 0 degrees.
· * The narrower the half value width, the greater the angle dependency.
· * For interference filters, the center wavelength shifts to the long wavelength side as the temperature rises.
· * Precision adjustment of each individual filter is carried out to achieve high performance.
· * Therefore, thickness varies depending on each filter.
[Product Specifications]
· [ Common Specifications]
· Material: Optical Glass
· Effective Range: 45 x 45 mm or more
· Shielding Area Transmission: 0.01% (1-1,200 nm)
· Incidence Angle: 0°
· Coating: Dielectric Multilayer Film Coating
· [Individual Specifications]
· Center Wavelength: 640±2 nm
· Half Width: 12 ± 2 nm
· Maximum Transmittance: >60%

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Part Number : 61-6883-55
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