Midwest Optical DB660-850-46

Name: DB660-850-46
Brand: Midwest Optical
SKU: DB660-850-46

DB660-850-46

$290.00Request Lead Time

Dual Bandpass Filter Visible Red + NIR

Useful Range: 645 to 675 nm, 830 to 870 nm
FWHM: 40 nm, 50 nm
Tolerance: +/- 5 nm
Minimum Peak Transmission: >90%
Surface Quality: 40/20

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Accessories

Accessory Products

Midwest Optical SU25.5-46
Midwest Optical SU25.5-46, Step-Up Ring, from M25.5 x 0.5 To M46 x 0.75, 48 mm Outer Diameter, 22.5 mm Clear Aperture

$25.00 Quantity Add to Cart
Midwest Optical SU27-46
Midwest Optical SU27-46, Step-Up Ring, from M27 x 0.5 To M46 x 0.75, 48 mm Outer Diameter, 24 mm Clear Aperture

$25.00 Quantity Add to Cart
Midwest Optical SU30.5-46
Midwest Optical SU30.5-46, Step-Up Ring, from M30.5 x 0.5 To M46 x 0.75, 48 mm Outer Diameter, 27.5 mm Clear Aperture

$25.00 Quantity Add to Cart
Midwest Optical SU34-46
Midwest Optical SU34-46, Step-Up Ring, from M34 x 0.5 To M46 x 0.75, 48 mm Outer Diameter, 31 mm Clear Aperture

$25.00 Quantity Add to Cart
Midwest Optical SU37-46
Midwest Optical SU37-46, Step-Up Ring, from M37 x 0.75 To M46 x 0.75, 48.5 mm Outer Diameter, 33.2 mm Clear Aperture

$25.00 Quantity Add to Cart
Midwest Optical SU37.5-46
Midwest Optical SU37.5-46, Step-Up Ring, from M37.5 x 0.5 To M46 x 0.75, 48 mm Outer Diameter, 34.5 mm Clear Aperture

$25.00 Quantity Add to Cart
Midwest Optical SU39-46
Midwest Optical SU39-46, Step-Up Ring, from M39 x 0.5 To M46 x 0.75, 48 mm Outer Diameter, 36.5 mm Clear Aperture

$79.00 Quantity Add to Cart
Midwest Optical SU40.5-46
Midwest Optical SU40.5-46, Step-Up Ring, from M40.5 x 0.5 To M46 x 0.75, 48 mm Outer Diameter, 37.5 mm Clear Aperture

$25.00 Quantity Add to Cart
Midwest Optical SU43-46
Midwest Optical SU43-46, Step-Up Ring, from M43 x 0.75 To M46 x 0.75, 48 mm Outer Diameter, 40 mm Clear Aperture

$25.00 Quantity Add to Cart

Description

The DB660/850 filter has been primarily designed for NDVI imaging applications. When using a single camera, incorporation of this filter allows reflected red light (660 nm) to be captured in the camera sensor’s red channel and reflected near-infrared light (850 nm) to be captured in the sensor’s blue channel (the green channel is not used). Even when using an inexpensive consumer camera (that has first had its IR blocking filter removed), this easy separation than makes it possible to post-process the red and blue channels for NDVI by performing the calculation: NDVI = (red – blue) / (blue red). Healthy vegetation will absorb (not reflect) blue light and strongly reflect near-infrared light. Thus this information can then be used to apply a false color gradient to images to better highlight the contrast between regions of healthy vegetation vs. areas with stressed/diseased or no vegetation.

Useful Range: 645 to 675 nm, 830 to 870 nm
FWHM: 40 nm, 50 nm
Tolerance: +/- 5 nm
Minimum Peak Transmission: >90%
Surface Quality: 40/20