Patent Application
20120161036
1. Technical Field
The present disclosure generally relates to testing devices, and particularly, to a testing device for testing ambient light sensors.
2. Description of the Related Art
To allow consumers to be able to view a display of an electronic device in different lightings, the electronic device is generally equipped with an internal ambient light sensor. The ambient light sensor can sense the light intensity of the external environment, and produce a corresponding light intensity signal that is transmitted to a processor of the electronic device. The processor adjusts the brightness of the display according to the light intensity signal, so that consumers is able to obtain a better viewing experience. Moreover, the display brightness adjustments according to the light intensity of the external environment can also reduce the power consumption of the electronic device. The ambient light sensor needs to be tested before being positioned into the electronic device, to ensure that it can work properly.
However, present conventional testing devices for the ambient light sensor typically occupy a larger volume with more complex structure, and have higher manufacturing costs.
Therefore, there is room for improvement within the art.
The components in the drawings are not necessarily drawn to scale, the emphasis instead placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
Referring to the
The testing platform 33 defines an avoidance groove 330 in a corner thereof, and includes a support plate 331 and a testing plate 332 positioned on the support plate 331.
The support plate 331 defines a light-transmitting groove 3311 in a center thereof. Two positioning brackets 3312 are connected to the support plate 331, and adjacent to the opposite ends of the light-transmitting groove 3311, respectively. Each positioning bracket 3312 defines a sliding groove 3313.
The testing plate 332 forms a receiving portion 3320 for receiving an ambient light sensor (not shown) to be tested. In the illustrated embodiment, the receiving portion 3320 includes a first receiving groove 3321, a second receiving groove 3322 communicating with the first receiving groove 3321, and a third receiving groove 3323 communicating with the second receiving groove 3322. The first receiving groove 3321 and the second receiving groove 3322 are substantially rectangular, and the third receiving groove 3323 is substantially T-shaped. It should be pointed out that the receiving portion 3320 can be designed to any shape according to the ambient light sensor to be tested. A bottom wall in the first receiving groove 3321 defines a light penetrating hole 3324 penetrating through the testing plate 332. The light penetrating hole 3324 communicates with the light transmitting groove 3311 of the support plate 331. The testing plate 332 defines an assembly groove 3325 adjacent to the second receiving groove 3322, and the assembly groove 3325 has a depth deeper than that of the second receiving groove 3322 for allowing conveniently assembling the ambient light sensor. The testing plate 332 further forms two connecting portions 3326 disposed opposite to each other at a side adjacent to the avoidance groove 330.
The testing light source 35 forms two positioning portions 351 on opposite ends thereof. Each positioning portion 351 is slidably engaged in one corresponding sliding groove 3313 of the positioning bracket 3312, so as to adjust a distance from the testing light source 35 to the light transmitting groove 3311. In the illustrated embodiment, the testing light source 35 is a light-emitting diode (LED).
The control circuit board 37 is positioned on the support plate 331 and at one side of the testing light source 35. The control circuit board 37 is electrically connected to the testing light source 35.
The cover plate 34 forms two rotary portions 341 opposite to each other at a first end thereof. The rotary portions 341 are rotatably connected to the connecting portions 3326 of the testing plate 332 via a pivot shaft 342. The cover plate 34 also forms an operating portion 343 at a second end opposite to the first end thereof, such that the cover plate 34 can be easily rotated. An elastic member 344 is fixed to a middle portion of the cover plate 34, such that the elastic member 344 tightly presses against the ambient light sensor, when the cover plate 34 covers on the testing platform 33.
The probe 38 is assembled on a middle portion of the cover plate 34 and aligned with the elastic member 344. When the cover plate 34 is covered on the testing plate 332, the probe 38 is electrically connected to the ambient light sensor.
The adapter circuit board 36 is positioned on the cover plate 34, and electrically connected to the probe 38. The adapter circuit board 36 is also electrically connected to the control circuit board 37 via an electrical wire (not shown).
In use, the ambient light sensor is positioned in the receiving portion 3320 of the testing plate 332. The cover plate 34 is rotated to cover the testing plate 332. Then, the probe 38 is electrically connected to the ambient light sensor, and the elastic member 344 tightly presses against the ambient light sensor. The distance from the testing light source 35 to the light transmitting groove 3311 is adjusted to be equal to a predetermined distance, and the testing of the ambient light sensor is then started. Light emitted by the testing light source 35 is transmitted to the receiving portion 3320 through the light transmitting groove 3311 and the light penetrating hole 3324. The ambient light sensor is tested under three brightness modes, namely, low brightness, normal brightness, and high brightness, which are adjusted by the testing light source 35. The probe 38 obtains a plurality of testing messages regarding the ambient light sensor, and generates a testing signal. The testing signal is transmitted to the control circuit board 37 via the adapter circuit board 36. The control circuit board 37 analyzes the testing signal to determine whether the ambient light sensor is working properly. After testing, the cover plate 34 is rotated to uncover the testing plate 332, and the ambient light sensor is taken out of the receiving portion 3320 through the assembly groove 3325.
The testing device 30 utilizes the testing platform 33 and the cover plate 34 to form the testing space, and the testing signal is transmitted from the probe 38 to the control circuit board 37 via the adapter circuit board 36. Therefore, the testing device 30 has a simpler structure and a relatively lower manufacturing cost.
While the present disclosure has been described with reference to particular embodiments, the description is illustrative of the disclosure and is not to be construed as limiting the disclosure. Therefore, various modifications can be made to the embodiments by those of ordinary skill in the art without departing from the true spirit and scope of the disclosure, as defined by the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201010607203.9 | Dec 2010 | CN | national |
