1. A blind spot detection system for a vehicle comprising an On-Board Diagnostics (OBD) system, the blind spot detection system comprising:
an alarm, capable of generating an alarm signal;
a plurality of sensors, each for emitting a radio signal and receiving a reflecting signal of the emitted radio signal, to detect whether an object exists within a specific range and generate a detection result accordingly; and
a control module, for receiving at least one vehicle information from the OBD system and controlling the alarm to generate the alarm signal according to the at least one vehicle information and a plurality of detection results generated by the plurality of sensors.
2. The blind spot detection system of claim 1, further comprising a transmission line, connecting the OBD system and the control module, for transmitting the at least one vehicle information.
3. The blind spot detection system of claim 2, wherein a connecting interface of the transmission line conforms to a standard interface of OBD II.
4. The blind spot detection system of claim 2, further comprising a plurality of signal transceivers, disposed between the transmission line and the control module, for converting data between the transmission line and the control module.
5. The blind spot detection system of claim 4, wherein one of the plurality of signal transceivers is capable of transmitting and receiving signals conforming to a communication standard of international organization for standardization 9143-2 or keyword protocol 2000.
6. The blind spot detection system of claim 4, wherein one of the plurality of signal transceivers is capable of transmitting and receiving signals conforming to a communication standard of society of automotive engineers J1850, pulse width modulation (PWM), or variable pulse width(VPW).
7. The blind spot detection system of claim 4, wherein one of the plurality of signal transceivers is capable of transmitting and receiving signals conforming to a communication standard of international organization for standardization 15756 or control area network.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A wavelength selective switch comprising:
an optical inputoutput unit that includes an input unit and an output unit of a wavelength multiplexed light that are arranged in a form of an array in a first direction;
a light dispersing unit that receives the wavelength multiplexed light from the input unit and disperses the wavelength multiplexed light into signal wavelengths;
a light condensing element that condenses the light dispersed into the signal wavelengths; and
a light deflecting element array that deflects a signal light in the first direction and a second direction, that is orthogonal to the first direction, so as to switch a light of the signal wavelengths condensed by the light condensing element to a desired output unit,
wherein the light condensing element and the light deflecting element array are arranged such that a light launched from the input unit is incident on a surface orthogonal to a passing direction at an angle that is not orthogonal within a deflection range of the light deflecting element array.
2. The wavelength selective switch according to claim 1, wherein the light dispersing unit and the light condensing element are arranged such that the passing direction of the light of the signal wavelengths condensed by the light condensing element does not coincide with a central axis of the light condensing element in the second direction.
3. The wavelength selective switch according to claim 1, wherein the passing direction of the light of the signal wavelengths condensed by the light condensing element coincides with a central axis of the light condensing element in the second direction, and the light deflecting element array is inclined such that the light launched from the input unit is incident on the surface orthogonal to the direction of propagation with the angle that is not orthogonal within the deflection range of the light deflecting element array.
4. The wavelength selective switch according to claim 2, wherein the light condensing element is arranged at a position in the second direction offset from a position where the passing direction of the light of the signal wavelengths condensed by the light condensing element coincide with the central axis of the light condensing element.
5. The wavelength selective switch according to claim 3, wherein the light deflecting element array is a mirror array that includes a plurality of mirrors arranged along the second direction, and the mirrors are always inclined with respect to an axis connecting points on each mirror where light is condensed.