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MidOpt SP Series – NIR Block Filter SP730

Uniforce Product

Salient Features

Near-IR/Colorless Dichroic Block Shortpass Filter 

SP730 –a heat resistant filter– reduces IR radiation/camera bloom while having no effect on the apparent color of an image. The color temperature characteristics of any given camera sensor will remain unchanged. A broadband multilayer anti-reflection coating is present on the second side of this dichroic hot mirror.

SP730 Near-IR/Colorless Dichroic Block Shortpass FilterMidOpt_SP730_Trans_Graphic

  • Useful Range : 400-710nm
  • Cut-off Wavelength 50% T : 730nm
  • Tolerance : +/- 10nm
  • Minimum Peak Transmission : ≥90%
  • Surface Quality : 40/20

Designed to pass visible and shorter NIR wavelengths and assist in filtering near-IR light sources, SP785 can be considered in some cases as an alternative to using a DB735 filter. The second surface is provided with a high efficiency anti-reflection coating.

 

Transmission DataAvailable MountsQuote Request

SP730 Transmission Data

SP730 Transmission Data
Wavelength Wavelength Transmission Transmission
(nm) (%) (nm) (%)
1100 1.28 670 90.56
1090 1.08 660 88.78
1080 0.65 650 96.96
1070 0.34 640 91.99
1060 0.17 630 96.65
1050 0.11 620 93.97
1040 0.09 610 96.61
1030 0.05 600 95.09
1020 0.08 590 96.62
1010 0.11 580 91.93
1000 0.25 570 96.09
990 0.67 560 92.72
980 1.33 550 95.92
970 0.9 540 93.54
960 0.49 530 92.78
950 0.41 520 95.9
940 0.57 510 95.95
930 1.61 500 95.02
920 4.89 490 93.49
910 2.29 480 95.24
900 0.66 470 95.1
890 0.51 460 93.5
880 0.84 450 93.72
870 1.69 440 91.81
860 1.85 430 93.77
850 0.91 420 93.08
840 0.62 410 91.97
830 0.72 400 87.52
820 1.36 390 74.34
810 2.17 380 6.71
800 1.75 370 0.2
790 1.46 360 1.89
780 2.09 350 33.79
770 4.87 340 45.23
760 8.77 330 43.23
750 8.72 320 39.29
740 13.41 310 7.57
730 37.34 300 0.12
720 63.68 290 1.24
710 75.09 280 0.56
700 95.79 270 0.01
690 89.77 260 0
680 94.43 250 0.01

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.

Order MidOpt SP Series Filter SP730

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