Light-receiving device for use with the exposure meter in single lens reflex camera

In a single lens reflex camera having a finder optical system, an objective lens, and a meter device including a light receiving portion:

• a. a principal mirror for reflecting part of the light passing through said objective lens toward said finder optical system and for transmitting therethrough the remainder of said light;
• b. first optical means including a reflector member and disposed between said principal mirror and the focal plane of the objective lens and in inclined relationship with respect to the optical axis of said objective lens;
• c. a condensing mirror extending between the image of an object formed by and between said objective lens and said first optical means and the light-receiving portion of said metering device;
• and
• d. an image-forming half-lens provided on said condensing mirror to condense said image of the object toward said light-receiving portion of said metering device by cooperating with said condensing mirror, the optical axis of said half-lens being substantially coincident with the reflecting surface of said condensing mirror.