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850 Laser Band Pass Filter

850 Laser Band Pass Filter

850nm bandpass filter BP850nm, 850nm bandpass filter, mainly used for 850nm infrared laser tube to improve its signal-to-noise ratio. 1. the product introduction Kingki Optical's high-performance narrow-band infrared filter, with spectral coverage from 780nm to 5400nm, features long life, no...

  • Features & Specification

    850nm bandpass filter

    BP850nm, 850nm bandpass filter, mainly used for 850nm infrared laser tube to improve its signal-to-noise ratio.

    1. the product introduction

    Kingki Optical's high-performance narrow-band infrared filter, with spectral coverage from 780nm to 5400nm, features long life, no drift, high transmission, deep cutoff, high quality and low price.

    image001(001).jpg

    850nm infrared laser filter


    2. 850nm infrared laser filter parameter curve: (You can fill in the demand table at the end of the text to tell us that you want the product)

    image003.jpg

    Transmission curve, wavelength = 850 nm, infrared bandpass filter


    3. the application:

    Infrared filters are mainly used in security monitoring, infrared gas analyzers, night vision products, infrared detectors, infrared receivers, infrared sensors, and infrared communication products. Specific products such as: surveillance camera, remote control, infrared curtain wall products, infrared sensor toilet, faucet, hand soap device, infrared thermometer, infrared printer, interactive whiteboard, infrared touch screen, fingerprint recognition machine, face recognition system Wait.


    4.the company's strength

    Kingki has long been responsible for the research and production of military optical coatings. The chief engineer has more than 40 years of military optical coating experience, and has 33 national authorized patents. Nine optical film systems have won the People's Republic of China Science and Technology Progress Award.

    Kingki has a high-end factory building of 4,000 square meters, 13 sets of advanced coating machines and complete test equipment, with the ability to mass produce high-end optical filters.

    Kingki's wide range of products, excellent performance, high quality and low price, prompt delivery


    5.Demand table

    band pass filters


    AOI

    central

    FWHT

    Tpek

    block

    OD

    metal

    D

    purpose

    quantity

    delivery

    e.g.1

    785±2nm

    10±2

    ≥80%

    200-1100

    6

    no

    10

    fluorometric

    2


    yours















    We will consider first the problem of ensuring zero reflectance at one single wavelength and we shall attempt to achieve this with a two-layer coating. Since we are dealing with high-index substrates, we look initially at combinations of layers having refractive indices lower than that of the substrate. Avector diagram of one possibility is shown in Figure 4.6. Provided the vectors are not such that any one is greater in length than the sum of the other two, then there are two sets of thicknesses for which zero reflectance can be obtained at one wavelength. The thinner combination, as in Figure 4.6a, will give the broadest characteristic and should normally be chosen. In some ways, it is easier to visualize the design using an admittance plot. As usual, we plot admittance in free space units so that it is numerically the


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