Abstract: A detection mechanism includes a light source disposed on a substrate, a condensing lens disposed between the substrate and light emitted from the light source, and a photodetector disposed on the substrate and under the condensing lens.

Abstract: A detection mechanism includes a light source disposed on a substrate, a condensing lens disposed between the substrate and light emitted from the light source, and a photodetector disposed on the substrate and under the condensing lens.

Abstract: A detection mechanism includes a light source disposed on a substrate, a condensing lens disposed between the substrate and light emitted from the light source, and a photodetector disposed on the substrate and under the condensing lens.

Abstract: A detection device according to an aspect of the invention, includes: a housing including an air intake port and an air discharge port; a platelike member having a first air ventilation port and a second air ventilation port, the platelike member being provided inside the housing; a first sensor provided on an air intake port side of the first air ventilation port on a front face of the platelike member; and a second sensor provided between the first air ventilation port and the second air ventilation port on a rear face of the platelike member.

Abstract: A detection mechanism includes a light source disposed on a substrate, a condensing lens disposed between the substrate and light emitted from the light source, and a photodetector disposed on the substrate and under the condensing lens.

Abstract: A receiver includes a tuner chassis and a substrate provided inside the tuner chassis so as to allow a high frequency signal to flow therein, wherein an input cable whose frame connection section is provided around a signal line. A connector for allowing connection with the input cable is provided on the substrate and an opening which allows the input cable to pass therethrough is provided in the tuner chassis. A GND connection section for connecting the frame connection section of the input cable to the tuner chassis is provided on the opening, and the tuner chassis and an earthing conductor of the substrate can be connected via an earthing conductor of the input cable extending from the cable GND connection section to the connector. As a result, it is possible to surely shield the signal line, the receiving circuit substrate, and a ground of the receiver with a shortest distance, thereby shutting out an unnecessary signal.

Abstract: A transmitter includes an RF board having a circuit for processing high frequency signals, an IF board having a circuit for processing intermediate frequency signals, a shield plate formed of a conductive material arranged between the boards for shielding electromagnetic waves generated from the circuits, a board-to-board connecting wire inserted to a through hole based by a gap sufficient to avoid electric influence from an inner wall surface of the through hole provided in the shield plate, to be connected to through hole lands provided on the RF board and a IF board, respectively, and connectors formed of an insulating material and attached near opposite ends of the board-to-board connecting wire and sandwiching the shield plate, for fixing the board-to-board connecting wire to the shield plate. This provides a wiring connection structure that facilitates connection between circuit boards with each other and stably realizes normal signal transmission.

Abstract: A plurality of composite elements are arranged in parallel with each other on a substrate. The composite elements each include a rectangular microstrip line element, an input microstrip line and an output microstrip line. The microstrip line element has one longer side, the other longer side, one end and the other end, and the input microstrip line is connected at the one end to the one longer side while the output microstrip line is connected at the other end to the other longer side. The composite elements are cascaded to constitute a low-pass filter.

Abstract: A transmitter includes an RF board having a circuit for processing high frequency signals, an IF board having a circuit for processing intermediate frequency signals, a shield plate formed of a conductive material arranged between the boards for shielding electromagnetic waves generated from the circuits, a board-to-board connecting wire inserted to a through hole based by a gap sufficient to avoid electric influence from an inner wall surface of the through hole provided in the shield plate, to be connected to through hole lands provided on the RF board and a IF board, respectively, and connectors formed of an insulating material and attached near opposite ends of the board-to-board connecting wire and sandwiching the shield plate, for fixing the board-to-board connecting wire to the shield plate. This provides a wiring connection structure that facilitates connection between circuit boards with each other and stably realizes normal signal transmission.

Abstract: A plurality of composite elements are arranged in parallel with each other on a substrate. The composite elements each include a rectangular microstrip line element, an input microstrip line and an output microstrip line. The microstrip line element has one longer side, the other longer side, one end and the other end, and the input microstrip line is connected at the one end to the one longer side while the output microstrip line is connected at the other end to the other longer side. The composite elements are cascaded to constitute a low-pass filter.