Abstract: A power supply control apparatus comprises a first power supply supplying power to a controller and a second power supply supplying power to an operation unit and a power controller. The operation unit receives an operation for switching the first power supply on and off. The power controller is operable to turn on the first power supply according to the signal from a timer or the operation by the operation unit, and to turn off the first power supply according to a state of the controller. The controller, upon at least either of the operation by the operation unit or the signal from the timer, performs a setting to the timer of a time at which to turn on the power from the first power supply or a time at which to turn off the power from the first power supply.

Abstract: An image display apparatus includes a light source, an image generating element, a light guide element, and a light guide unit. The light guide element has a first surface and a second surface opposite to the first surface, and the image generating element is disposed to face the second surface of the light guide element. The light from the light source enters the first surface, transmits through the light guide element and the light guide unit, and enters the image generating element to be converted into the image light, and the image light transmits through the light guide unit and enters the second surface. A distance between an exit surface of the image generating element for emitting the image light and an incident surface of the light guide unit which the image light enters is longer than 0 mm and equal to or shorter than 5 mm.

Abstract: A hearing aid adjusting apparatus 104 for adjusting a parameter of a hearing aid 101 has an input device 201 for accepting an operation input, a storage 203 for storing the parameter for every predetermined surrounding setting, a controller 202 for controlling the parameter for every surrounding setting, and a display 204 for displaying information about the parameter, and the input device 201 accepts selection of the plural surrounding settings and operates one of the selected surrounding settings, and the controller 202 collectively converts a parameter in the selected surrounding setting based on an operation accepted by the input device 201.

Abstract: A hearing aid adjusting apparatus for making adjustment so that duplication, movement, etc. of surrounding setting can easily be changed on software is provided. A hearing aid adjusting apparatus 104 for adjusting a parameter of a hearing aid 101 has an input device 201 for accepting an operation input, a storage 203 for storing the parameter every predetermined surrounding setting, a controller 202 for controlling the parameter every the surrounding setting, and a display 204 for displaying information about the parameter, and the input device 201 accepts selection of the plural surrounding settings and operates one of the selected surrounding settings, and the controller 202 collectively converts a parameter in the selected surrounding setting based on an operation accepted by the input device 201.