JP2003140028A5 - - Google Patents

Description

Further, the present invention each independently metering system and a distance measuring system based on the premise device using separate light beams, in this case, parallax occurs between the metering area and the distance measurement area .. Therefore, by arranging the photometric system between the pair of photometric systems and arranging the optical axes of each objective lens on substantially the same plane, the parallax between the photometric region and the photometric region can be reduced, which is accurate. Photometry and distance measurement are possible. Therefore, so-called spot metering can also be supported.

In FIG. 2, reference numerals 8 and 9 are one-dimensional line sensors for distance measurement, the line sensor 8 receives light flux from the distance measurement lens 1, and the line sensor 9 receives light flux from the distance measurement lens 2. The camera control circuit (not shown) obtains subject distance information by processing the output signals from the line sensors 8 and 9, and controls the focus adjustment operation of the photographing optical system.

Reference numeral 10 denotes a photometric sensor, and the sensor 10 receives the light flux from the photometric lens 3. As shown in the figure, the light receiving surface of the sensor 10 is divided into several regions. This is because the photographing optical system is a variable magnification system, and therefore, by changing the metering range as the photographing area changes from a wide angle to a telephoto, highly accurate metering corresponding to the photographing area is performed.