Patent ID: 8164673
Filing Date: 2012-04-24
Classification: G02B,H04N

Abstract:
1. A filter switching device comprising: an optical filter unit that is disposed on an optical path of an object light that passes through a photographing lens of a camera, and can be switched to any one of a plurality of spectral transmittances; a spectral transmittance switching unit that switches a spectral transmittance of the optical filter unit to one of the plurality of spectral transmittances; a filter spectral transmittance information storage unit that stores filter spectral transmittance information, which is information relating to each of the plurality of spectral transmittances; a filter spectral transmittance information output unit that outputs filter spectral transmittance information corresponding to the spectral transmittance of the optical filter unit to the camera when the spectral transmittance of the optical filter unit is switched; and an exposure factor information storage unit that stores exposure factor information, which is information relating to a filter exposure factor corresponding to each of the plurality of spectral transmittances, wherein the filter spectral transmittance information output unit outputs the exposure factor information to the camera in addition to the filter spectral transmittance information corresponding to the spectral transmittance switched by the spectral transmittance switching unit.