Patent ID: 8900134
Filing Date: 2014-12-02
Classification: A61B,H04N

Abstract:
1. An endoscope apparatus comprising: an optical adapter including: (i) at least one light emitting diode, and (ii) a resistor having a resistance set in accordance with a type of the optical adapter, the at least one light emitting diode and the resistor being connected in parallel between a first adapter side electric contact and a second adapter side electric contact; an insertion section including: (i) a distal end portion to which the optical adapter is detachably attachable, (ii) first and second insertion section side electric contacts connectable to the adapter side electric contacts of the optical adapter, and (iii) first and second signal lines connected to the first and second insertion section electric contacts, respectively; a luminous body turn-on power supply for turning on the at least one light emitting diode; an attachment-and-detachment determining power supply which determines attachment and detachment of the optical adapter to and from the insertion section, the attachment-and-detachment determining power supply being a lower-voltage power supply than the luminous body turn-on power supply, and having a voltage set to be lower than a value of a forward drop voltage of the at least one light emitting diode; a first switch for switching between a connection of the first signal line to one of (i) the attachment-and-detachment determining power supply and (ii) the luminous body turn-on power supply; a driving section which sets a driving current to be supplied to the at least one light emitting diode from the luminous body turn-on power supply; and a system control section which controls the first switch to switch the connection of the first signal line to the luminous body turn-on power supply when the optical adapter is attached to the insertion section, and controls the first switch to switch the connection of the first signal line to the attachment-and-detachment determining power supply when the optical adapter is detached from the insertion section.