32results about How to "Change in amount" patented technology

A differential interference contrast microscope including an illuminating light source, a polarizer for converting an illumination light ray into a linearly polarized light, a polarized light separating means for dividing the linearly polarized light ray into two linearly polarized light rays having mutually orthogonal vibrating directions, an illuminating optical system for projecting the two linearly polarized light rays onto an object under inspection, a polarized light combining unit for combining the two linearly polarized light rays on a same optical path via an inspecting optical system, an analyzer for forming a differential interference contrast image on an imaging plane. The polarized light separating unit is constructed such that an amount of wavefront shear between the two linearly polarized light rays on the object can be changed, and the polarized light combining unit is arranged between the object and the analyzer at such a position that the two linearly polarized light rays propagate in parallel with each other and is constructed such that the two linearly polarized light rays can be combined with each other in accordance with the shear amount of wavefront introduced by the polarized light separating unit.

The invention relates to a high-pressure cleaning appliance, comprising a heatable heat exchanger for heating up a liquid dispensable by the high-pressure cleaning appliance, a blower with a flow channel connected thereto for supplying combustion air to the heat exchanger, and a setting member for setting the amount of combustion air suppliable to the heat exchanger, the setting member having a channel constriction section which is positionable in the flow channel and movable relative thereto for changing the free cross-sectional area of the flow channel. In order to develop a generic high-pressure cleaning appliance further so that the amount of combustion air suppliable to the heat exchanger can be better adjusted, it is proposed that the channel constriction section be configured so as to be slidingly displaceable relative to the flow channel.

A power conversion device includes a power semiconductor switching device and a drive circuit. The power semiconductor switching device is configured to supply constant power to a load by switching and to be turned on and off by a control signal from an external control circuit. The drive circuit is configured to detect an operating temperature of the power semiconductor switching device and drive the power semiconductor switching device according to a result of the detection. The drive circuit includes a temperature detecting unit configured to receive the control signal from the external control circuit and detect the operating temperature of the power semiconductor switching device at timings according to the control signal.

Provided is a diaphragm sheet transfer device, which is used for a handheld electronic device. Diaphragm sheets include different sizes of a plurality of light through holes. By controlling the positions of the diaphragm sheets, the light through holes with different sizes respectively pass through the incident light paths so that the amount of the light incident to the lens device is changed.