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 Filter
- 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.
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
- 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
- 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.