Chongfan Technology
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Plano-concave lens, N-BK7, mounted, antireflection coating: 650-1050 nm
Classification：
Detail
Parameters
Technical Data
Characteristics
· Material: N-BK7
· AR coating, wavelength range 650 - 1050 nm
Choose 1/2 inch, 1 inch and 2 inch optical elements
· Installed in lens groove compatible with SM thread
· Excellent transmission in the visible and near infrared range
These plano-concave lenses are made of RoHS-compliant N-BK7 glass and are coated with a broadband AR coating in the 350 - 700 nm band. This coating can greatly reduce the 4% light loss per surface that occurs when using uncoated lenses (see the curve tab for details).
Below is the transmittance curve of N-BK7, which is a RoHS-compliant BK7 form of glass. The total transmittance shows a 10 mm thick, uncoated sample and includes surface reflections.
These high performance multi-layer ANR films have an average reflectance of less than 0.5 percent (per surface) over the entire specified wavelength range and provide good performance (0.5 NA) over an incident angle range of 0 ° to 30 °. The graph below shows the performance of the standard coating of this series of products as a function of wavelength. The typical absorption of the broadband coating is 0.25 percent, which is not shown in the reflectance curve.
(The blue-shaded area indicates the specified wavelength range of 650 - 1050 nm for optimal performance.)
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