Abstract: A method for detecting spot position is provided. The method includes the following steps. Firstly, a number of primary light sensing pixels are enabled, wherein each primary light sensing pixel includes a number of secondary light sensing pixels. Then, a region of the primary light sensing pixels in which a light the spot is located is determined according to a first sensing value received by each primary light sensing pixel. Then, the secondary light sensing pixels outside the region are disabled. Then, a position of the spot is obtained according to a second sensing value received by the secondary light sensing pixels that are not disabled.

Abstract: A thermoelectric converter includes a battery box, an outer box and a connecting ring. The battery box has a bottom case, a battery disposed in the bottom case, a battery circuit board electrically connected to the battery, and an application circuit board disposed at one end of the bottom case. The outer box has a heat sink surrounding and covering the battery box, a thermoelectric module electrically connected to the battery circuit board with the thermoelectric module electrically connected to the battery through the battery circuit board, a heat conducting plate overlying the thermoelectric module and configured to conduct thermal energy from ambient environment to the thermoelectric module for the thermoelectric module to absorb the thermal energy and convert the thermal energy to electricity, and a non-metal adiabatic frame surrounding the thermoelectric module and configured to prevent the thermal energy from being dissipated to the ambient environment.

Abstract: A thermoelectric converter includes a battery box, an outer box and a connecting ring. The battery box has a bottom case, a battery disposed in the bottom case, a battery circuit board electrically connected to the battery, and an application circuit board disposed at one end of the bottom case. The outer box has a heat sink surrounding and covering the battery box, a thermoelectric module electrically connected to the battery circuit board with the thermoelectric module electrically connected to the battery through the battery circuit board, a heat conducting plate overlying the thermoelectric module and configured to conduct thermal energy from ambient environment to the thermoelectric module for the thermoelectric module to absorb the thermal energy and convert the thermal energy to electricity, and a non-metal adiabatic frame surrounding the thermoelectric module and configured to prevent the thermal energy from being dissipated to the ambient environment.