| 摘要 |
A prism 20 maybe provided with a plane parallel plate 25 which is applied to a central portion of a rear surface of the prism. A surface of the plane-parallel plate is a first emergent plane 22, which faces an eyepiece 12 of a viewfinder. A portion of the prism positioned above the plane-parallel plate is a second emergent plane 23, which faces a condenser lens 15 of a photometry optical system. Thus, the first emergent plane is projected with respect to the second emergent plane. The plane parallel plate may be integral with the prism (fig.7). Photoreceptor 16 is shown. |
