A method for detecting the presence or absence of an ophthalmic lens (10), in particular of a contact lens, within a receptacle (1), including the steps of: detecting infrared radiation coming from at least a portion (3) of the receptacle (1) where the ophthalmic lens (10) is supposedly accommodated, analyzing the detected infrared radiation in a spectral portion in which absorbance (A.sub.L) of a material the ophthalmic lens is made of is significantly different from absorbance (A.sub.R) of a material the receptacle is made of, and from the analysis of the spectral portion detecting the presence or absence of the ophthalmic lens (10) within the receptacle.

A method for detecting the presence or absence of an ophthalmic lens (10), in particular of a contact lens, within a receptacle (1), including the steps of: detecting infrared radiation coming from at least a portion (3) of the receptacle (1) where the ophthalmic lens (10) is supposedly accommodated, analyzing the detected infrared radiation in a spectral portion in which absorbance (A.sub.L) of a material the ophthalmic lens is made of is significantly different from absorbance (A.sub.R) of a material the receptacle is made of, and from the analysis of the spectral portion detecting the presence or absence of the ophthalmic lens (10) within the receptacle.

A water discharge apparatus including a water discharger, a water supply path, an opening/closing valve, a photoelectric sensor, and a controller, the photoelectric sensor projects detection light, receives a reflected light of the detection light, and outputs a received signal corresponding to a light reception amount of the reflected light, the controller detects an existence or absence of an object based on the received signal and controls opening and closing of the opening/closing valve according to a detection result of the object, the photoelectric sensor includes a sensor main body and a conductive member, the sensor main body includes a light-projecting element and a light receiving element, and the conductive member covers a front of the light receiving element, is formed in a sheet configuration, is light-transmissive, is conductive, and is electrically connected to a reference potential of the sensor main body.

A water discharge apparatus including a water discharger, a water supply path, an opening/closing valve, a photoelectric sensor, and a controller, the photoelectric sensor projects detection light, receives a reflected light of the detection light, and outputs a received signal corresponding to a light reception amount of the reflected light, the controller detects an existence or absence of an object based on the received signal and controls opening and closing of the opening/closing valve according to a detection result of the object, the photoelectric sensor includes a sensor main body and a conductive member, the sensor main body includes a light-projecting element and a light receiving element, and the conductive member covers a front of the light receiving element, is formed in a sheet configuration, is light-transmissive, is conductive, and is electrically connected to a reference potential of the sensor main body.

A method for monitoring a shock wave in an extreme ultraviolet light source includes irradiating a target droplet in the extreme ultraviolet light source apparatus of an extreme ultraviolet lithography tool with ionizing radiation to generate a plasma and to detect a shock wave generated by the plasma. One or more operating parameters of the extreme ultraviolet light source is adjusted based on the detected shock wave.

A method for monitoring a shock wave in an extreme ultraviolet light source includes irradiating a target droplet in the extreme ultraviolet light source apparatus of an extreme ultraviolet lithography tool with ionizing radiation to generate a plasma and to detect a shock wave generated by the plasma. One or more operating parameters of the extreme ultraviolet light source is adjusted based on the detected shock wave.

Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface, a charging circuit and a controller. The controller may be configured to cause the charging circuit to provide a charging current to a resonant circuit when a receiving device is placed on the charging surface, detect a change or rate of change in voltage or current level associated with the resonant circuit, provide a measurement slot by terminating the charging current for a period of time, and determine that the receiving device has been removed from the charging surface by performing a passive or digital ping procedure during the measurement slot.

Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface, a charging circuit and a controller. The controller may be configured to cause the charging circuit to provide a charging current to a resonant circuit when a receiving device is placed on the charging surface, detect a change or rate of change in voltage or current level associated with the resonant circuit, provide a measurement slot by terminating the charging current for a period of time, and determine that the receiving device has been removed from the charging surface by performing a passive or digital ping procedure during the measurement slot.

A blender transmits an electrical signal via a transparent film so as to detect whether a container lid is closed. The blender includes a container body receiving food; a main body provided under the container body and supporting the container body; a container lid mounted removably to the upper surface of the container body and configured to open/close the upper part of the container body; and a detection system configured to detect whether the container lid is mounted to the container body, wherein the detection system includes a transparent electrode film attached to the surface of the container body and guiding the flow of electricity. Accordingly, the transparent electrode film can transmit whether the container lid is mounted to the main body without spoiling the appearance of the container body made of a transparent material.

A blender transmits an electrical signal via a transparent film so as to detect whether a container lid is closed. The blender includes a container body receiving food; a main body provided under the container body and supporting the container body; a container lid mounted removably to the upper surface of the container body and configured to open/close the upper part of the container body; and a detection system configured to detect whether the container lid is mounted to the container body, wherein the detection system includes a transparent electrode film attached to the surface of the container body and guiding the flow of electricity. Accordingly, the transparent electrode film can transmit whether the container lid is mounted to the main body without spoiling the appearance of the container body made of a transparent material.