Abstract: An endoscope apparatus includes a light emitting diode provided at a tip end of an insertion part, and an electrical power supplying circuit of the light emitting diode which is detachably connected to a main power supply, the electrical power supplying circuit having an energizing controlling device of the light emitting diode, which operates upon being connected and disconnected to the main power supply.

Abstract: An endoscope system and method includes an endoscope tip coupled to a endoscope console for providing images of anatomical features imaged using the endoscope system. The system also includes a calibration device having known optical properties. The calibration device is imaged using the endoscope system, and data corresponding to the image is obtained. This data are compared to data corresponding to the known optical properties of the calibration device. Based on this comparison, calibration data corresponding to imaging errors of the endoscope system are obtained. The calibration data are used to calibrate the endoscope system.

Abstract: Methods and apparatuses for selecting and displaying an image with the best focus are disclosed. In one aspect, a method of displaying a captured image includes capturing a plurality of images of a field of view (FOV) using an image capture device, selecting one of the images having the best focus, and displaying the selected image on the image capture device. In another aspect, a method of displaying a captured image includes capturing a plurality of images of a FOV, dividing each of the images into a plurality of regions, and comparing corresponding regions from each of the images. The regions having the best focus are selected. A composite image is constructed formed from the regions with the best focus and the composite image is displayed. Image capture devices configured to effect the above methods are also disclosed.