Description
MidOpt SP635 Absorptive Visible Shortpass/Near-IR Block Filter
SP635 filters are commonly used inside cameras to block infrared light. When working with any camera that has been modified and its internal IR cut filter has been removed, a SP635 filter mounted on the front of the lens, when desired, can return function once again like the unmodified camera. This is an absorptive infrared rejection filter that is also recommended for protecting a camera’s sensor from stray light emitted by lasers or other high power near-IR light sources. SP635 filters are A/R coated on both sides to maximize visible band transmission while offering superior out-of-band blocking.
MidOpt SP635 Absorptive Visible Shortpass/Near-IR Block Filter Technical Characteristics
| Useful Range: | 380-585nm |
| FWHM: | 0 |
| Tolerance: | +/- 10nm |
| Peak Transmission | ?90% |
| Surface Quality | 40/20 |
*Filters 62mm and greater have a surface quality tolerance of 60/40.
MidOpt SP635 Absorptive Visible Shortpass/Near-IR Block Filter Transmission Chart
MidOpt SP635 Absorptive Visible Shortpass/Near-IR Block Filter Transmission Data
MidOpt SP635 Part Numbers:
MidOpt SP635-25.4MidOpt SP635-13.25
MidOpt SP635-22.5
MidOpt SP635-27
MidOpt SP635-30.5
MidOpt SP635-34
MidOpt SP635-35.5
MidOpt SP635-37
MidOpt SP635-37.5
MidOpt SP635-39
MidOpt SP635-40.5
MidOpt SP635-43
MidOpt SP635-46
MidOpt SP635-48
MidOpt SP635-49
MidOpt SP635-52
MidOpt SP635-55
MidOpt SP635-58
MidOpt SP635-62
MidOpt SP635-67
MidOpt SP635-72
MidOpt SP635-77
MidOpt SP635-82
MidOpt SP635-86
MidOpt SP635-95
MidOpt SP635-105
MidOpt Filter Mounting Options
Midwest Optical Systems offers filters in the following standard mounts. Most filters have both male and female threads to enable the ability to stack filters. For specific questions, please contact Machine Vision Direct.
Threaded Mounts
- 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
- Black anodized aluminum rings
- Rotating mounts with locking thumb screws are available upon request and come standard with Polarizing Filters
How to Order
To order a filter with a threaded mount, first select a filter (e.g. BP470) and add the mount size (e.g. M27) to build your part number (e.g. BP470-27). For help building your filter part number, visit an individual filter page.
|
Mount Size
Thread Dia x Pitch |
Part Suffix | Outer Diameter | Clear Aperture |
| M13.25 x P0.5 | -13.25 | 14.4 | 10.6 |
| M22.5 x P0.5 | -22.5 | 24 | 18.5 |
| 25.5 C-Mount* | -25.4 | 25.2 | 19.5 |
| M25.5 x P0.5 | -25.5 | 27.5 | 21 |
| M27 x P0.5 | -27 | 29 | 22.5 |
| M30.5 x P0.5 | -30.5 | 32.5 | 25.5 |
| M34 x P0.5 | -34 | 36 | 29 |
| M35.5 x P0.5 | -35.5 | 37.5 | 30.5 |
| M37 x P0.75 | -37 | 39 | 31.9 |
| M37.5 x P0.5 | -37.5 | 39.5 | 32.5 |
| M39 x P0.5 | -39 | 41 | 34 |
| M40.5 x P0.5 | -40.5 | 42.5 | 35.5 |
| M43 x P0.75 | -43 | 45 | 38 |
| M46 x P0.75 | -46 | 48 | 41 |
| M48 x P0.75 | -48 | 50 | 43 |
| M49 x P0.75 | -49 | 51 | 44 |
| M52 x P0.75 | -52 | 54 | 47 |
| M55 x P0.75 | -55 | 57 | 50 |
| M58 x P0.75 | -58 | 60 | 52.9 |
| M62 x P0.75 | -62 | 64 | 57.1 |
| M67 x P0.75 | -67 | 70 | 61.8 |
| M72 x P0.75 | -72 | 75 | 66.9 |
| M77 x P0.75 | -77 | 80 | 71.9 |
| M82 x P0.75 | -82 | 85 | 76.8 |
| M86 x P1.0 | -86 | 89 | 80.8 |
| M95 x P1.0 | -95 | 98.2 | 89.9 |
| M105 x P1.0 | -105 | 109.8 | 100 |
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