Light receiving device for reading an optical medium with reducing influence of dark current and stray light performance

A light receiving device for reading an optical medium, comprising:

• a reference voltage terminal;
• a first light receiving element operable to receive stray light resulting from diffused reflection from the optical medium and output a first signal responsive to the received stray light;
• a bias resistor connected between the reference voltage terminal and the first light receiving element;
• a second light receiving element operable to receive the stray light and light reflected from the optical medium and output a second signal responsive to the received stray light and reflected light;
• and
• a differential amplifier circuit operable to amplify a third signal that is derived by subtracting, from the second signal, the first signal that is received from the first receiving element via the bias resistor.