Accessory Products

Midwest Optical SU37-49
Midwest Optical SU37-49, Step-Up Ring, from M37 x 0.75 To M49 x 0.75, 31.5 mm Outer Diameter, 33.2 mm Clear Aperture

$25.00 Quantity Add to Cart
Midwest Optical SU46-49
Midwest Optical SU46-49, Step-Up Ring, from M46 x 0.75 To M49 x 0.75, 51 mm Outer Diameter, 43.5 mm Clear Aperture

$25.00 Quantity Add to Cart

Midwest Optical SD52-49
Midwest Optical SD52-49, Step-Down Ring, from M52 x 0.75 To M49 x 0.75, 54 mm Outer Diameter, 48.3 mm Clear Aperture

$25.00 Quantity Add to Cart
Midwest Optical SD55-49
Midwest Optical SD55-49, Step-Down Ring, from M55 x 0.75 To M49 x 0.75, 57.4 mm Outer Diameter, 48.3 mm Clear Aperture

$25.00 Quantity Add to Cart

Description

PE530 Photopic Bandpass Filter

When using the PE530 with a monochrome (black-and-white) camera or other sensors, together with a broadband light source (such as the sun), the resulting spectral response replicates in the same proportions what the human eye will see, closely matching the CIE 1931 photopic luminosity curve. This is highly useful in applications requiring accurate lux, lumen or cd/m2 readings. Photopic response filters are also used in conjunction with ambient light detectors, for example photoelectric sensors used to control when infrared LED lighting is brought into use in day-night imaging applications. They are also used in automatic control of display backlight brightness and ambient light sensors used in mobile phones to appropriately dim or brighten a device’s screen.

Useful Range: 495 to 565 nm
FWHM: 120 nm
Tolerance: +/- 10 nm
Minimum Peak Transmission: >70%
Surface Quality: 40/20