With the rise in demand for higher image quality digital camera, Epson Toyocom Corporation has announced the commercial development of a new optical low pass filter (OLPF) for digital cameras. This OLPF features a new structure that enables the uniform separation of light rays across the visible spectrum. An optical low pass filter is often provided on digital cameras to combat moiré patterns. Conventional OLPFs employ a construction containing three quartz plates. The three-quartz plate system, however, does not provide uniform light separation characteristics at certain wavelengths, and thus not all moiré patterns are eliminated. Epson Toyocom’s latest OLPF employs a new structure wherein a wide-band phase retardation film is sandwiched between a pair of quartz plates. This design provides uniform light separation at all wavelengths of visible light and is thus able to eliminate moiré patterns across the visible spectrum.

The new OLPF from Epson Toyocom is also thinner and lighter than the conventional structure because it requires only two quartz plates.

Popularity: 3% [?]