McMahon says he is developing an infrared filter
that will automatically pick out Lyman-alpha light from even more-distant galaxies.
The slit lamp comes with a permanent infrared filter
for safety and the practitioner can switch between the following other filters: clear, neutral density, red free, diffuser and blue (with the yellow barrier slotting down as needed).
Digital signal processing circuitry delivers clear video in most lighting environments, and a day/night control uses an infrared filter
for excellent images in low light.
The camera on the iPhone 5C is again taken from the iPhone 5, featuring an 8-megapixel sensor, complete with five-element lens and hybrid infrared filter
. On the front, the iPhone 5C has an upgraded 1.9-megapixel camera for high definition FaceTime video calls.
A mechanical infrared filter
automatically switches from color to black and white based on scene conditions.
The new iPhone 5 camera infrastructure contains the same 8-megapixel sensor with a hybrid infrared filter
, a five-element lens and a f/2.4 aperture.