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MidOpt SP Series – VIS Pass Filter NF550

Uniforce Product

Salient Features

Magenta Dichroic Shortpass Filter (Green Block)

NF550 Magenta Dichroic Shortpass Filter (Green Block) MidOpt_NF550_Trans_Graphic

  • Useful Range : 395-475nm, 605-700nm
  • Cut-off Wavelength 50% T : 480 / 590nm (cut-off / cut-on)
  • Tolerance : +/- 10nm
  • Minimum Peak Transmission : ≥90%
  • Surface Quality : 40/20

The performance of a filter is based on what happens to light passing through the filter. The apparent color of light reflected off the surface is not a reliable way to judge the filter’s capabilities. Batch-to-batch difference in the apparent color of the coatings or filter substrates can often be easily seen when looking at two examples of the same filter type. The color of the coating does not indicate a disparity in performance.

 

Transmission DataAvailable MountsQuote Request

NF550 Transmission Data

wavelength transmission wavelength transmission
(nm) (%) (nm) (%)
1100 81.79 720 29.68
1090 79.10 710 48.03
1080 76.83 700  75.72
1070  75.28 690  93.71
1060  74.60 680  88.42
1050  74.90 670  79.08
1040  76.30 660  78.00
1030  78.73 650  83.69
1020  82.12 640  89.18
1010  85.80 630  89.86
1000  89.17 620  87.67
990  91.25 610  84.91
980  91.31 600  79.46
970  88.85 590  63.30
960  84.06 580  28.50
950  77.74 570  7.57
940  70.76 560  2.25
930  64.09 550  0.88
920  57.83 540  0.46
910  52.05 530  0.32
900  47.05 520  0.30
890  42.71 510  0.40
880  38.66 500  0.83
870  34.83 490  3.23
860  31.51 480  32.35
850  28.60 470  81.06
840  26.10 460  77.22
830  23.62 450  84.40
820  21.15 440  86.06
810  18.93 430  92.21
800  16.71 420  89.82
790  14.83 410  89.95
780  13.62 400  87.49
770  12.92 390  74.67
760  12.75 380  71.82
750  13.61 370 72.23
740  15.83 360 24.03
730  20.34 350 6.99

Available Mounts

Threaded Mount

  • Designed for lenses with filter threads, a variety of filter types and stock threaded sizes are available: M13.25-M105
  • Larger sizes, 62mm to 105mm, are made to order and are not returnable
  • Custom thread sizes are available upon request.
  • Threaded mounts are available as black anodized aluminum rings. Rotating mounts with locking thumb screws are generally provided.

Ordering Example:

  • Filter: BP470
  • Mount Size: M27

Correct Part# is:

  • BP470-27

Threaded Mount Technical Drawing PDF

Slip Mount

  • Designed for varifocal lenses, wide angle lenses and lenses without filter threads
  • Accommodates standard threaded mounts
  • Low profile and oversize diameter design prevents wide angle lens vignetting
  • Locking set screws and a wrench are provided to secure the adapter to the lens
  • Many varifocal and shorter fixed focal length (wide angle) lenses are not supplied with filter threads due to the presence of a protruding, strongly convex lens element. Our slip mount adapters allow standard threaded filters to be fitted securely to these and a large variety of lenses that do not have filter threads provided.

Ordering Example:

  • Filter: BP470
  • Outside Diameter of Lens in mm: 43mm

Correct Part# is:

  • BP470-S43

Slip Mount Technical Drawing PDF

C/CS Camera Mount

midopt-c-mount

  • Designed to thread directly into any C/CS mount camera between the lens and sensor
  • Wrenching slots aid in threading the filter into the camera body. A wrench is supplied with each filter.
  • Helpful in applications with space constraints
  • Can be used with wide angle lenses that do not accept filters at the front end to prevent vignetting
  • C/CS mount filters are available in a standard 1mm thickness

Ordering Example: 

  • Filter: BP470
  • Mount Size: 25.4

Correct Part# is:

  • BP470-25.4

C/CS Camera Mount Technical Drawing PDF

 Unmounted  & Custom Size

midopt-unmounted

  • Any MidOpt filter type can be provided as an Unmounted filter
  • Custom shapes and sizes are typically fabricated with one day to two week lead times
  • Custom filter types with longer lead times can also be quoted. Please contact us regarding feasibility.

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