Light source and detecting device thereof

The present invention relates to a light source and detecting device thereof includes: a housing; a printed circuit board; an optical fiber connector; a laser diode; a laser driving module; a light coupling device; a light detecting module; an analog-to-digital converter; a micro controlling device; a stroke switch and a displaying device; when the stroke switch is pressed, the light detecting module is activated according to a determination made by the micro controlling device then a light signal coupled by the light coupling device is detected by the light detecting module, then the signal is displayed on the displaying device after being converted by the analog-to-digital converter or the laser diode is driven by the laser driving module and a laser source is therefore emitted.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a light source and detecting device thereof, more particularly to a light source and detecting device thereof that is used for measuring invisible light used for communication and for emitting a laser source, and is small in volume and portable.

2. Description of Related Art

A conventional light source and detecting device thereof used for measuring invisible light used for communication is expensive and not easy to carry around. One end of the device has to be coupled with an optical fiber, then a measurement is done by the light source and detecting device thereof for obtaining information that whether the detected communication signal is good or not. However, to ensure the quality of wireless communication, skilled people have to travel to various locations for measuring and maintaining. But the above mentioned light source and detecting device thereof is big in volume, not easy to carry around and is expensive, and can not provide the skilled people convenient and real-time operations.

The optical fiber is expensive and fragile, so it is often disposed within a protection tube or a culvert for avoiding from external destructions. But the diameters of the protection tube or the culvert described above are not big in sizes and a conventional detecting device for an optical fiber is big in volume and is not convenient to carry around, so when the optical fiber is malfunction, skilled people are not able to use a large detecting device for an optical fiber due to the size limitation.

So a novel light source and detecting device thereof is needed for overcoming the above mentioned disadvantages.

SUMMARY OF THE INVENTION

One object of the present invention is to provide a light source and detecting device thereof that is small in volume and is portable.

Another object of the present invention is to provide a light source and detecting device thereof, which is equipped with a changeover switch capable of being adjusted according to a wavelength of a light signal, the measurement precision is therefore increased.

One another object of the present invention is to provide a light source and detecting device thereof, which is equipped with a changeover switch capable of being adjusted when needed and a continuous laser or a laser pulse is therefore emitted.

For achieving the above mentioned objects, the light source and detecting device thereof provided by the present invention includes: a housing having an accommodating space and one end of the housing is provided with a first opening, a second opening and a through hole; a printed circuit board received in the accommodating space for carrying following units; an optical fiber connector, one end thereof is exposed outside of the first opening and the optical fiber connector is provided with a transmitting end and a receiving end for being coupled with an optical fiber; a laser diode coupled with the optical fiber connector; a laser driving module coupled with the laser diode for driving the laser diode; a light coupling device provided in the optical fiber connector; a light detecting module coupled with the light coupling device for detecting a light signal coupled by the light coupling device and transferring the light signal to an analog signal; an analog-to-digital converter coupled with the light detecting module for receiving the analog signal and converting the analog signal to a digital signal; a micro controlling device coupled with the laser driving module, the analog-to-digital converter and the light detecting module; a stroke switch coupled with the micro controlling device and exposed outside of the through hole; and a displaying device coupled with the micro controlling device and exposed outside of the second opening; when the stroke switch is pressed, the light detecting module is activated according to a determination made by the micro controlling device then a light signal coupled by the light coupling device is detected by the light detecting module, the light signal is displayed on the displaying device after being converted by the analog-to-digital converter or the laser diode is driven by the laser driving module and a laser source is therefore emitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring toFIG. 1toFIG. 3, whereinFIG. 1is a schematic exploded view of a light source and detecting device thereof of a preferred embodiment of the present invention;FIG. 2is a schematic view of the assembly of the light source and detecting device thereof of a preferred embodiment of the present invention;FIG. 3is a schematic block diagram of the light source and detecting device thereof of a preferred embodiment of the present invention.

As shown in figures, the light source and detecting device thereof provided by the present invention comprises: a housing10, a printed circuit board20, an optical fiber connector30, a laser diode40, a laser driving module50, a light coupling device60, a light detecting module70, an analog-to-digital converter80, a micro controlling device90, a stroke switch100and a displaying device110.

The housing10is made of insulating materials, e.g. but not limited to plastic materials, the housing10is further provided with a top housing member11and a bottom housing member12, an accommodating space13is formed between the top housing member11and the bottom housing member12, a first opening14is provided at the front ends of the top housing member11and the bottom housing member12, and the top housing member11has a second opening111, a third opening112, a fourth opening113and a through hole114.

The printed circuit board20is received in the accommodating space13for carrying the optical fiber connector30, the laser diode40, the laser driving module50, the light detecting module70, the analog-to-digital converter80, the micro controlling device90, the stroke switch100and the displaying device110.

One end of the optical fiber connector30is exposed outside of the first openings14and the optical fiber connector30is provided with a transferring end31and a receiving end32for being coupled with an optical fiber (not shown), the optical fiber is used for transferring invisible light signals (hereinafter is referred to light signals) or light signals for communication to be measured.

The optical fiber connector30is a SC/LC/FC/ST/or MC optical fiber connector, wherein the SC optical fiber connector is a Simplex Connector, the LC optical fiber connector is a Lucent Connector, the FC optical fiber connector is a Fiber Connector, and the above mentioned SC/LC/FC/ST/and MC optical fiber connectors are thinned optical fiber connectors. The outer end of the optical fiber connector30is further provided with an outer cover33disposed at the outer side of the first opening14for protecting the optical fiber connector30.

The laser diode40is disposed on the printed circuit board20and coupled with the laser driving module50and can be driven by the laser driving module50to emit a laser beam, the wavelength of the laser beam is e.g. but not limited to 650 nm.

The laser driving module50is disposed on the printed circuit board20and coupled with the laser diode40for driving the laser diode40.

The light coupling device60is provided in the optical fiber connector30for coupling a light signal in the optical fiber with the light detecting module70.

The light detecting module70is disposed on the printed circuit board20for detecting the light signal coupled by the light coupling device60and transferring the light signal to an analog signal.

The analog-to-digital converter80is disposed on the printed circuit board20and coupled with the light detecting module70for receiving the analog signal and transferring the analog signal to a digital signal and processing a calculation.

The micro controlling device90is disposed on the printed circuit board20and coupled with the laser driving module50, the light detecting module70and the analog-to-digital converter80. This art is the core of the present invention which will be described in details later.

The stroke switch100is disposed on the printed circuit board20and coupled with the micro controlling device90and exposed outside of the through hole114, for being pressed to activate the laser driving module50or the light detecting module70. The outer end of the stroke switch100is further provided with a pressing member101that is sleeved on the stroke switch100, for allowing a user press the stroke switch100. The outer end of the pressing member101is further provided with a decoration sheet102having a round hole103and a square hole104, wherein the round hole103is served to allow the pressing member101expose outside.

The displaying device110is coupled with the micro controlling device90and is exposed outside of the second opening111and the square hole104, for displaying the calculation value of the light signal. The displaying device110can be, but not limited to, a seven-stage LED monitor or a liquid crystal monitor. The display device110can have a two-digit or a three-digit seven-stage numerals, when the display device110has the two-digit seven-stage numerals, the displaying device110can be used to detect 1310 nm/1490 nm/1550 nm via a single mode detection within a range of −30 dBm˜−6 dBm, when the display device110has the three-digit seven-stage numerals, the displaying device110can be used to detect 1310 nm/1490 nm/1550 nm via a single mode detection within a range of −30 dBm˜−3 dBm.

The light source and detecting device thereof provided by the present invention is further provided with a three-stage switch120respectively coupled with the light detecting module70and the laser driving module50and exposed outside of the third opening112, so the wavelength of the light signal that can be detected by the light detecting module70can be switched to 850 nm, 1310 nm or 1550 nm, the detectable wavelength can be adjusted according to the wavelength of the light signal, or the laser driving module50can be switched to either emit a continuous laser beam or a laser pulse, the wavelength of the laser beam is 650 nm so the calculation precision of the light source and detecting device thereof provided by the present invention can be increased. The outer end of the three-stage switch120is further provided with a stirring member121sleeved on the three-stage switch120for allowing a user stir the three-stage switch120.

The light source and detecting device thereof provided by the present invention is further provided with a battery130, the other end of the accommodating space13is provided with a battery chamber15, the battery130is received in the battery chamber15and is coupled with the light coupling device60, the light detecting module70, the analog-to-digital converter80, the stroke switch100and the displaying device110via electrodes151,152, for supplying needed power, the battery130can be a primary battery or a rechargeable battery.

The bottom end of the battery chamber15is further provided with a clamping section153for allowing a skilled person clamp the light source and detecting device thereof provided by the present invention in a pocket of the skilled person.

The bottom housing member12is further provided with an indicating device140, e.g. but not limited to a multi-color LED, coupled with the micro controlling device90and exposed outside of the fourth-opening113, for indicating the operation status of the light source and detecting device thereof provided by the present invention. When the electric capacity of the battery130detected by the micro controlling device90is enough to operate normally, the indicating device140is driven to display a green light; when the electric capacity of the battery130detected by the micro controlling device90is low, the indicating device140is driven to display a red light for reminding a user to replace the battery130.

After assembled, continuously pressing the stroke switch100for a certain time, e.g. continuously pressing for 3 seconds or continuously pressing for 6 seconds, when pressing for 3 seconds, the micro controlling device90can, but not limited to, activate the laser driving module50for processing an optical fiber detection or emitting a laser; when pressing for 6 seconds, the micro controlling device90can, but not limited to, activate the light detecting module70for processing a laser detection.

For instance, when a user continuously presses the stroke switch100for 3 seconds, the micro controlling device90would determine whether the user has chosen the function of detecting optical fiber or emitting laser, in other words the laser driving modules50is activated; then the user operates the three-stage switch120, so the laser diode40is driven by the laser driving module50and a continuous laser beam or a laser pulse is therefore emitted via the transferring end31for serving as a laser source, and the wavelength of the laser beam is 650 nm under the mode of detecting wavelength as 850 nm (1310 nm or 1550 nm, 850 nm is used for illustration in the embodiment but not acts as a limit for the detecting wavelength); or the optical fiber (not shown) is respectively connected to the transferring end31and the receiving end32of the optical fiber connector30, so that the light signal coupled by the light coupling device60can be detected by the light detecting module70, the light signal is shown on the displaying device110after being converted by the analog-to-digital converter80and being calculated by the micro controlling device90, so according to the value shown on the displaying device110a skilled person can know the intensity of the light signal in the optical fiber and operations of maintenance or adjustment can be proceeded.

When the user presses the stroke switch100for 6 seconds, the micro controlling device90would determine that the user has chosen the function of detecting laser, in other words the light detecting module70is activated; then the user operates the three-stage switch120, so light detecting module70can detect laser signals with wavelength of 850 nm, 1310 nm, or 1550 nm; then the optical fiber is connected to the receiving end32of the optical fiber connector30, so that the intensity of the light signal coupled by the light coupling device60can be detected by the light detecting module70, and the intensity of the light signal is shown on the displaying device110after being converted by the analog-to-digital converter80and being calculated by the micro controlling device90, so according to the value shown on the displaying device110a skilled person can know the intensity of the light signal in the optical fiber and operations of maintenance or adjustment can be proceeded.

The present invention provides a light source and detecting device thereof that is small in volume, easy to carry around and has a three-stage switch, and that can emit a continuous laser beam or a laser pulse or process an optical fiber detection and a laser detection in which the wavelength is adjustable according to the wavelength of the light signal, so the calculation precision of the light source and detecting device thereof provided by the present invention is increased.