Abstract: To appropriately evaluate skin spots by grasping a quality (characteristic) of the skin spots. A skin spot evaluation apparatus includes an area extracting unit that extracts skin spot areas corresponding to skin spots from a skin image obtained by photographing a skin of a subject; and an evaluation unit that analyzes, based on the skin spot areas extracted by the area extracting unit, at least one of the number of the skin spots, dimension of each of the skin spots and density of each of the skin spots, and generates data obtained by quantifying characteristic of the skin spots of the skin image using the analyzed result.

Abstract: To appropriately evaluate skin spots by grasping a quality (characteristic) of the skin spots. A skin spot evaluation apparatus includes an area extracting unit that extracts skin spot areas corresponding to skin spots from a skin image obtained by photographing a skin of a subject; and an evaluation unit that analyzes, based on the skin spot areas extracted by the area extracting unit, at least one of the number of the skin spots, dimension of each of the skin spots and density of each of the skin spots, and generates data obtained by quantifying characteristic of the skin spots of the skin image using the analyzed result.

Abstract: A high pressure discharge lamp includes a light emission section in which a pair of electrodes is arranged, sealing portions formed from both ends of the light emission section, external leads, and a trigger wire provided near the light emission section. The trigger wire includes a first coil portion, which is wound from a vicinity of a boundary between the light emission section and one of the sealing portions towards an outer end of the one of sealing portions, and a linear stretch-across portion, which extends from the first coil portion near the light emission section towards the external lead extending from an outer end of the other sealing portion and is fixed to the external lead. A second coil portion is formed around the other sealing portion. The wire, which forms the stretch-across portion, is held between the second coil portion and the other sealing portion.

Abstract: A high pressure discharge lamp lighting apparatus that comprises a power supply apparatus that supplies a rectangle wave alternating current to the high pressure discharge lamp for lighting, such that when the lamp is operated by electric power of 0.5×P (W) or less, when maximum operation power P (W) in a steady lighting state except an initial lighting period that is immediately after starting, where a first polarity driving period of a rectangle wave alternating current is Ta (seconds), and where a second polarity driving period is Tb (seconds) an operation is performed so that the second polarity driving period Tb is 5 ms or less (Tb?5 ms) and a ratio Tb/Ta of these two driving periods is 0.1 or less (Tb/Ta?0.1).

Abstract: A high pressure discharge lamp includes a light emission section in which a pair of electrodes is arranged, sealing portions formed from both ends of the light emission section, external leads, and a trigger wire provided near the light emission section. The trigger wire includes a first coil portion, which is wound from a vicinity of a boundary between the light emission section and one of the sealing portions towards an outer end of the one of sealing portions, and a linear stretch-across portion, which extends from the first coil portion near the light emission section towards the external lead extending from an outer end of the other sealing portion and is fixed to the external lead. A second coil portion is formed around the other sealing portion. The wire, which forms the stretch-across portion, is held between the second coil portion and the other sealing portion.

Abstract: A discharge lamp lighting apparatus comprises a discharge lamp and a power supply the discharge lamp can be switched between a steady power lighting mode, which drives the discharge lamp by an alternating current in which first and second polarities are repeated by turns, and a low power lighting mode, which drives the discharge lamp at 50% or less of the alternating current of the steady power lighting mode, and the alternating current comprises a first time unit, which has a time width t1, and second time unit, which has a time width t2, that are repeated by turns to drive the discharge lamp.

Abstract: The present invention relates to a high pressure discharge lamp that includes a pair of electrodes, which face each other in an electric discharge space. Further, an electrode axis of one of the electrodes is joined to a metallic foil in a sealing portion, and two or more grooves are formed in an axis direction on a portion corresponding to the sealing portion on the electrode axis. Furthermore, a remaining portion that lacks grooves is left on the electrode axis in a metallic foil side thereof, and the metallic foil side ends of the grooves are not aligned with each other in the axis direction thereof.

Abstract: This invention relates to a method for preventing or treating skin discoloration of a subject by inhibiting carbonylation of dermal proteins of the subject who is in need of prevention or treatment for skin discoloration.

Abstract: To stabilize the arc bright point position of a discharge lamp and suppress deformation of an electrode when an ultrahigh-pressure discharge lamp is operated with extremely low electric power, the lamp is operated by supplying power from a power supply device having a step-down chopper circuit and a full bridge circuit, a rectangular wave alternating current being supplied when it is operated with rated power or dimmed power (about 60 to 80% of rated power), a DC current being supplied during standby power operation of at most 0.5×P (W) with respect to the maximum operating power P (W). Moreover, the high-pressure discharge lamp light source device may be mounted on a projector for projecting images and the mode being changed to standby power operation when there is no change in an image signal, for example, for a prescribed period of time.

Abstract: A discharge lamp lighting apparatus includes a discharge container, a pair of electrodes and a power supply apparatus. An alternating current of a frequency, which is lower than stationary frequency, is inserted periodically into the alternating current of stationary frequency. When a lighting current value of the discharge lamp is smaller than a predetermined lower limit, the frequency is set as predetermined minimum frequency. When the lighting current value of a discharge lamp is larger than a predetermined maximum value, the frequency is set as predetermined maximum frequency. When a lighting current value of the discharge lamp is between the lower limit and the maximum value, the frequency is set as a selected frequency corresponding to the lighting current value. The selected frequency increases according to an increase of frequency change as a lighting current value increases.

Abstract: A discharge lamp lighting apparatus for turning on a discharge lamp has a lighting condition in which a projection is formed at a tip of an electrode for electric discharge. In the discharge lamp lighting apparatus, when the polarity-reversal mode is the second mode, the inverter control circuit operates to generate the inverter control signal so that a DC component contained in the output current increases more than that in the first mode, when the polarity-reversal mode is the first mode, and it is detected that the lamp voltage is lower than a predetermined first voltage, the polarity-reversal mode control circuit changes the polarity-reversal mode into the second mode, and when the polarity-reversal mode is the second mode, and it is detected that the lamp voltage is higher than a predetermined second voltage, the polarity-reversal mode control circuit changes the polarity-reversal mode into the first mode.

Abstract: A discharge lamp lighting apparatus comprises a discharge lamp and a power supply the discharge lamp can be switched between a steady power lighting mode, which drives the discharge lamp by an alternating current in which first and second polarities are repeated by turns, and a low power lighting mode, which drives the discharge lamp at 50% or less of the alternating current of the steady power lighting mode, and the alternating current comprises a first time unit, which has a time width t1, and second time unit, which has a time width t2, that are repeated by turns to drive the discharge lamp.

Abstract: A high pressure discharge lamp lighting apparatus that comprises a power supply apparatus that supplies a rectangle wave alternating current to the high pressure discharge lamp for lighting, such that when the lamp is operated by electric power of 0.5×P (W) or less, when maximum operation power P (W) in a steady lighting state except an initial lighting period that is immediately after starting, where a first polarity driving period of a rectangle wave alternating current is Ta (seconds), and where a second polarity driving period is Tb (seconds) an operation is performed so that the second polarity driving period Tb is 5 ms or less (Tb?5 ms) and a ratio Tb/Ta of these two driving periods is 0.1 or less (Tb/Ta?0.1).

Abstract: The present invention relates to a high pressure discharge lamp that includes a pair of electrodes, which face each other in an electric discharge space. Further, an electrode axis of one of the electrodes is joined to a metallic foil in a sealing portion, and two or more grooves are formed in an axis direction on a portion corresponding to the sealing portion on the electrode axis. Furthermore, a remaining portion that lacks grooves is left on the electrode axis in a metallic foil side thereof, and the metallic foil side ends of the grooves are not aligned with each other in the axis direction thereof.

Abstract: A discharge lamp lighting apparatus includes a discharge container, a pair of electrodes and a power supply apparatus. An alternating current of a frequency, which is lower than stationary frequency, is inserted periodically into the alternating current of stationary frequency. When a lighting current value of the discharge lamp is smaller than a predetermined lower limit, the frequency is set as predetermined minimum frequency. When the lighting current value of a discharge lamp is larger than a predetermined maximum value, the frequency is set as predetermined maximum frequency. When a lighting current value of the discharge lamp is between the lower limit and the maximum value, the frequency is set as a selected frequency corresponding to the lighting current value. The selected frequency increases according to an increase of frequency change as a lighting current value increases.

Abstract: To devise a light source device with a low price and from which a sufficient amount of light can be obtained, in a light source device having a reflector and a discharge lamp, a hermetically sealed portion of the lamp is directly joined to a part of a neck region of the reflector with a processed portion being formed for setting the positional relationship between the lamp and reflector.

Abstract: To stabilize the arc bright point position of a discharge lamp and suppress deformation of an electrode when an ultrahigh-pressure discharge lamp is operated with extremely low electric power, the lamp is operated by supplying power from a power supply device having a step-down chopper circuit and a full bridge circuit, a rectangular wave alternating current being supplied when it is operated with rated power or dimmed power (about 60 to 80% of rated power), a DC current being supplied during standby power operation of at most 0.5×P (W) with respect to the maximum operating power P (W). Moreover, the high-pressure discharge lamp light source device may be mounted on a projector for projecting images and the mode being changed to standby power operation when there is no change in an image signal, for example, for a prescribed period of time.

Abstract: The present invention provides a method for evaluating the transparency and/or water holding capacity of a stratum corneum by using oxidized protein in the stratum corneum as an indicator.

Abstract: A discharge lamp lighting apparatus for turning on a discharge lamp has a lighting condition in which a projection is formed at a tip of an electrode for electric discharge. In the discharge lamp lighting apparatus, when the polarity-reversal mode is the second mode, the inverter control circuit operates to generate the inverter control signal so that a DC component contained in the output current increases more than that in the first mode, when the polarity-reversal mode is the first mode, and it is detected that the lamp voltage is lower than a predetermined first voltage, the polarity-reversal mode control circuit changes the polarity-reversal mode into the second mode, and when the polarity-reversal mode is the second mode, and it is detected that the lamp voltage is higher than a predetermined second voltage, the polarity-reversal mode control circuit changes the polarity-reversal mode into the first mode.

Abstract: Disclosed is an evaluating method for the properties of a corneocyte in a horny layer sample originating in the skin. In the above method, detected and evaluated are selective staining of a cornified envelope in a corneocyte, selective staining of a nuclear component and the antigenicity.