TWM457872U - Optical inspecting apparatus - Google Patents

Description

Optical detection device

The present invention relates to a detecting device, and more particularly to an optical detecting device.

In recent years, the application of Light Emitting Diode (LED) has been slowly changed from the indicator light and display of small wattage to the street lamp with large wattage demand. Compared with the traditional light bulb, the light-emitting diode has the advantages of long life, power saving, environmental protection, directionality of the light source, multiple colors, low driving voltage and fast reaction rate.

Although the light-emitting diode has the above advantages, in order to balance the quality of the light-emitting diode, the light-emitting diode must be subjected to detection of relevant data before shipment, such as light intensity detection, spectral detection, and optical wavelength detection.

Taking the light intensity detection as an example, the conventional light intensity detecting device can only detect the two-dimensional light intensity data of the light emitting diode. Although the measurement time required to measure the two-dimensional light intensity is short, the integrity of the measurement data for the single light-emitting diode is insufficient, and thus the test data of the light-emitting diode is presented. As a good product, there are still defects in the actual product, which causes inconvenience in subsequent applications. Therefore, how to improve the detection accuracy of the light-emitting diode detection device for the light-emitting diode will be one of the problems that the industry should pay attention to.

The present invention relates to an optical detecting device for improving the detection accuracy of a light-emitting diode detection device for a light-emitting diode.

The optical detecting device disclosed in the present invention is for detecting an optical test object, which comprises a light intensity detecting module. The light intensity detecting module comprises a base, a carrying platform, an arm and a light intensity detecting component. The carrier is rotatably disposed on the base. The carrier is used to carry an optical test object. The arm has a first end and a second end. The first end is pivoted to the base. The axis of rotation of the arm intersects the axis of rotation of the carrier. The second end is at a distance from the axis of rotation of the arm. The light intensity detecting element is disposed at the second end of the arm, and the moving path of the light intensity detecting element intersects the rotation axis of the stage.

According to the optical detecting device disclosed in the present invention, the rotation axis of the arm of the light intensity detecting module intersects with the rotation axis of the carrying platform, so that the light intensity detecting element provided on the arm can detect the optical waiting on the carrying platform. The three-dimensional light intensity distribution information of the object is measured, thereby improving the detection accuracy of the optical detecting device.

The above description of the present invention and the following description of the embodiments are intended to illustrate and explain the principles of the present invention and to provide a further explanation of the scope of the invention.

Please refer to FIG. 1 to FIG. 4 at the same time. FIG. 1 is a schematic block diagram of the optical detecting device disclosed in the first embodiment, and FIG. 2 is a perspective view of the optical detecting device of FIG. 1 , and FIG. 1 is a perspective view of the light intensity detecting module, and FIG. 4 is a perspective view of the spectrum detecting module of FIG. 1. Fig. 5A is a side view showing the light intensity detecting element of the light intensity detecting module of Fig. 2 located above the optical object to be tested.

The optical detecting device 10 of the embodiment is configured to detect an optical object to be tested 60, and the light The object to be tested 60 is, for example, a light-emitting diode. In addition, the optical detecting device 10 can be connected to the computer 20 through a control card 30, a first data capture card 40 and a second data capture card 50 to control the optical detecting device 10 by using the computer 20.

The optical detecting device 10 includes a base 70, a light intensity detecting module 100, an electronic control module 200, and a spectrum detecting module 300. In addition, the optical detecting device 10 further includes an optical fiber 400.

The light intensity detecting module 100 includes a base 110, a carrying platform 120, a first movable platform 130, an arm 140 and a light intensity detecting component 150. In addition, the light intensity detecting module 100 further includes two driving motors 160 , two conductive elements 170 , and a first housing 180 . In the present embodiment, the two-drive motor 160 is exemplified by a stepping motor, but is not limited thereto.

The base 110 is disposed on the base 70.

The carrier 120 is rotatably disposed on the base 110. The carrying platform 120 is used to carry the optical test object 60. In practice, the center of the optical test object 60 is aligned with the rotation axis L1 of the stage 120. One of the two drive motors 160 is used to drive the carriage 120 to rotate relative to the base 110.

The first movable platform 130 is movably disposed on the base 110 (which is movable in both directions along the x-axis and the y-axis). The manner in which the first movable platform 130 is moved is not intended to limit the present invention. In other embodiments, the first movable platform 130 may also be movable in the directions of the x-axis, the y-axis, and the z-axis.

The arm 140 has a first end 141 and a second end 142. The first end 141 of the arm 140 is pivoted to the first movable platform 130. The rotation axis L2 of the arm 140 and the bearing The axis of rotation L1 of the table 120 intersects. The light intensity detecting component 150 is disposed at the second end 142 of the arm 140, and the light intensity detecting component 150 is electrically connected to the first data capturing card 40 for transmitting the light intensity information of the optical object to be tested 60 to the computer 20. The second end 142 of the arm 140 is maintained at a distance d from the axis of rotation L2 of the arm 140 (as shown in Figure 5A).

In detail, the arm 140 includes a pivoting member 143 and a supporting member 144, and the first end 141 and the second end 142 are respectively located at the pivoting member 143 and the supporting member 144. The pivoting member 143 is pivoted to the first movable platform 130. The other of the two drive motors 160 is used to drive the pivoting member 143 to rotate relative to the first movable platform 130. The support member 144 is movably mounted to the pivot member 143 and maintains a distance d from the axis of rotation of the pivot member 143. The light intensity detecting element 150 is provided on the support 144. The light intensity detecting element 150 of the present embodiment is a photoelectric crystal for detecting the light intensity of the optical object to be tested 60. Further, the moving path M of the light intensity detecting element 150 intersects the rotation axis L1 of the stage 120. When the center of the optical test object 60 is located at the rotation axis L1 of the stage 120, the pivoting member 143 is pivoted by 90 degrees so that the light intensity detecting element 150 can be displaced from one side of the optical object to be tested 60 to the optical object to be tested 60. Just above it.

The conductive element 170 is fixed to the base 110 at one end and fixed to the carrier 120 at the other end and electrically connected to the optical object 60.

The first housing 180 is disposed on the base 70 and covers the base 110, the carrier 120, the first movable platform 130, the arm 140, the light intensity detecting element 150, and the optical object 60. Thereby, it is possible to prevent the ambient light source from being irradiated to the light intensity detecting element 150 to affect the accuracy of the detection. In addition, the first housing 180 has a first through hole 181, and the first through hole The first through hole 181 of the present embodiment is located directly above the optical object to be tested 60.

The electronic control module 200 includes a signal transmission interface 210 (for example, UMI-7761), a driver 220, and a power supply 230. The signal transmission interface 210 is electrically connected to the control card 30 and the driver 220. The driver 220 is electrically connected to the two driving motors 160 to control the two driving motors 160 to drive the carrying platform 120 and the arms 140 by using the computer 20. The power supply 230 is electrically connected to the two conductive elements 170, and the two conductive elements 170 are electrically connected to the optical object 60. The power supply 230 is used to supply power to the optical object to be tested 60 to cause the optical object to be tested 60 to emit light.

The spectrum detecting module 300 includes a second movable platform 310, a first mirror 320, a second mirror 330, a grating 340, a spectral detecting component 350, and a second housing 360. The second movable platform 310 is movably disposed on the second housing 360 (movable in the direction of the x-axis and the y-axis) relative to the second housing 360, but is not limited thereto. In other embodiments, the second The movable platform 310 can also be movably disposed on the base 70. The first mirror 320, the second mirror 330, the grating 340, and the spectrum detecting element 350 are disposed on the second movable platform 310. The spectrum detecting component 350 is electrically connected to the second data capture card 50 for transmitting the spectral characteristic information of the optical analyte 60 to the computer 20. In the present embodiment, the spectrum detecting element 350 is a charge coupled device (CCD) line type sensor. The first mirror 320 and the second mirror 330 are, for example, spherical mirrors.

The second housing 360 is disposed on the base 70 and covers a second movable platform 310, a first mirror 320, a second mirror 330, a grating 340, and a spectral detection. Element 350. The second housing 360 has a second through hole 361 corresponding to the first mirror 320. The optical fibers 400 are respectively disposed on the first through hole 181 and the second through hole 361 to conduct the light of the optical object to be tested 60 to the first mirror 320 of the spectrum detecting module 300.

Thereby, the light of the optical analyte 60 can be sequentially reflected to the spectrum detecting element 350 via the first mirror 320, the grating 340, and the second mirror 330, so that the spectrum detecting element 350 senses the spectrum of the optical object 60. characteristic.

In the present embodiment, the optical detection device 10 includes the spectral detection module 300, but is not limited thereto. In other embodiments, the optical detection device 10 may not include the spectral detection module 300.

Next, how the optical detecting device 10 of the present embodiment detects the three-dimensional light intensity information of the optical test object 60 will be described. Please refer to FIG. 5A and FIG. 5B , and FIG. 5B is a schematic side view of the light intensity detecting element of the light intensity detecting module of FIG. 2 on the side of the optical object to be tested.

First, as shown in Fig. 5A, the initial position of the light intensity detecting element 150 is adjacent to the optical object to be tested 60, and is maintained at the same level as the bottom end of the light transmitting surface of the optical object to be tested 60. When the stage 120 is rotated, the light intensity detecting element 150 starts detecting the light intensity of the bottommost circle of the optical object to be tested 60. Next, after each detection of the light intensity detecting element 150, the light intensity detecting element 150 is raised by the pivoting member 143 by a height to detect the light intensity of the next turn of the optical object to be tested 60. Next, the above steps are repeated until the light intensity detecting element 150 is displaced right above the optical object to be tested 60, that is, the pivoting member 143 is rotated by 90 degrees. In this way, the optical detecting device 10 The three-dimensional light intensity detection information of the optical test object 60 can be detected, and the optical test object 60 can be judged based on the three-dimensional light intensity detection data.

The direction in which the light intensity detecting element 150 is displaced is displaced from the bottom of the optical object to be tested 60 to the upper side, but is not limited thereto. In other embodiments, the direction in which the light intensity detecting element 150 is displaced may also be optically treated. The measurement object 60 is displaced directly above the bottom of the optical sample to be tested 60.

However, the optical detecting device 10 of the present embodiment can perform position correction before detecting to improve the accuracy of detecting the light intensity of the optical object to be tested 60. Please refer to FIG. 6A and FIG. 6B, FIG. 6A is a light intensity distribution diagram of the optical specimen to be uncorrected corrected in FIG. 2, and FIG. 6B is a light intensity of the optical specimen to be corrected according to FIG. Distribution. The correction is performed by first pivoting the pivoting member 143 by 180 degrees so that the light intensity detecting element 150 moves along the path passing through the rotation axis L1 of the loading table 120 to obtain a light intensity distribution curve (solid line) of an optical sample to be tested 60. . Next, after the stage 120 is rotated by an angle, the pivoting member 143 is pivoted by 180 degrees, so that the light intensity detecting element 150 moves along the path passing through the rotation axis L1 of the carrying platform 120 to obtain another optical object to be tested 60. Light intensity distribution curve (dashed line). From these two light intensity distribution curves, it can be judged whether or not the optical detecting device 10 is corrected. As shown in Fig. 6A, the positions where the highest intensity of the two light intensity distribution curves are not overlapped represent unfinished correction, so the relative position between the optical test object 60 and the optical detecting device 10 needs to be continuously adjusted until the correction is completed. As shown in Fig. 6B, the positional overlap of the two light intensity distribution curves having the highest intensity indicates that the correction has been completed, so that the detection of the optical test object 60 can be started.

According to the optical detecting device disclosed in the above novel, the light intensity detecting module The rotation axis of the arm intersects with the rotation axis of the carrier, so that the light intensity detecting component disposed on the arm can detect the three-dimensional light intensity distribution information of the optical object on the bearing platform, thereby improving the detection precision of the optical detecting device. degree.

In addition, the optical fiber connection light intensity detecting module and the spectrum detecting module enable the light of the optical object to be tested placed in the light intensity detecting module to be transmitted to the spectrum detecting module through the optical fiber, thereby enabling the optical detecting device to detect In addition to the light intensity information of the optical test object, the spectral characteristics of the optical test object can also be detected.

Although the embodiments of the present invention are disclosed as described above, it is not intended to limit the present invention, and those skilled in the art can, without departing from the spirit and scope of the present invention, the shapes, structures, and features described in the scope of the present application. And the spirit of the invention is subject to change. Therefore, the scope of patent protection of the present invention is subject to the definition of the scope of the patent application attached to this specification.

10‧‧‧Optical inspection device

20‧‧‧ computer

30‧‧‧Control card

40‧‧‧First data capture card

50‧‧‧Second data capture card

60‧‧‧Optical test object

70‧‧‧Base

100‧‧‧Light intensity detection module

110‧‧‧Abutment

120‧‧‧Loading station

130‧‧‧First event platform

140‧‧‧ Arm

141‧‧‧ first end

142‧‧‧ second end

143‧‧‧ pivoting parts

144‧‧‧Support

150‧‧‧Light intensity detection component

160‧‧‧Drive motor

170‧‧‧Conductive components

180‧‧‧ first housing

181‧‧‧ first through hole

200‧‧‧Electric control module

210‧‧‧Signal transmission interface

220‧‧‧ drive

230‧‧‧Power supply

300‧‧‧Spectrum detection module

310‧‧‧Second event platform

320‧‧‧First mirror

330‧‧‧second mirror

340‧‧‧Raster

350‧‧‧ Spectral detection components

360‧‧‧ second housing

361‧‧‧Second through hole

400‧‧‧ fiber

FIG. 1 is a block diagram showing the system of the optical detecting device disclosed in the first embodiment.

Fig. 2 is a perspective view showing the optical detecting device of Fig. 1.

Figure 3 is a perspective view of the light intensity detecting module of Figure 1.

Figure 4 is a perspective view of the spectrum detecting module of Figure 1.

Fig. 5A is a side view showing the light intensity detecting element of the light intensity detecting module of Fig. 2 located above the optical object to be tested.

Fig. 5B is a side view showing the light intensity detecting element of the light intensity detecting module of Fig. 2 on the side of the optical object to be tested.

Fig. 6A is a light intensity distribution diagram of the optical test object which is not completed and corrected in Fig. 2.

Fig. 6B is a light intensity distribution diagram of the optical sample to be corrected which is completed in Fig. 2.

60‧‧‧Optical test object

100‧‧‧Light intensity detection module

110‧‧‧Abutment

120‧‧‧Loading station

130‧‧‧First event platform

140‧‧‧ Arm

141‧‧‧ first end

142‧‧‧ second end

143‧‧‧ pivoting parts

144‧‧‧Support

150‧‧‧Light intensity detection component

160‧‧‧Drive motor

170‧‧‧Conductive components

Claims (10)

An optical detecting device for detecting an optical object to be tested, comprising a light intensity detecting module, the light intensity detecting module comprising: a base; a carrying platform rotatably disposed on the base, the carrying platform The arm has a first end and a second end, and the first end is pivotally disposed on the base, and the rotation axis of the arm intersects with the rotation axis of the carrier. The second end is at a distance from the axis of rotation of the arm; and a light intensity detecting element is disposed at the second end of the arm, and the moving path of the light intensity detecting element intersects the axis of rotation of the carrier . The optical detecting device of claim 1, wherein the arm comprises a pivoting member and a supporting member, the pivoting member is pivotally mounted on the base, and the supporting member is movably mounted on the pivoting member. The light intensity detecting element is provided on the support. The optical detecting device of claim 1, wherein the light intensity detecting element is a photoelectric crystal. The optical detection device of claim 1, further comprising an electronic control module comprising a signal transmission interface and a driver, the light intensity detection module further comprising two driving motors, wherein the signal transmission interface is electrically connected to the driver, The driver is electrically connected to the two driving motors, and the two driving motors are electrically connected to the carrying platform and the arm respectively, and are used for driving the carrying platform and the arm to rotate. The optical detecting device of claim 4, wherein the electronic control module further comprises an electric a power supply for electrically connecting the optical test object. The optical detecting device of claim 1, wherein the light intensity detecting module further comprises a first movable platform, wherein the first movable platform is movably disposed on the base opposite to the base, and the arm is pivoted on the base The first activity platform. The optical detection device of claim 1, further comprising a spectral detection module and an optical fiber, the light intensity detection module further comprising a first housing covering the loading platform and the arm, the spectral detection mode The group further includes a second housing, the optical fibers being respectively connected to the first housing and the second housing for guiding light of the optical test object in the first housing into the second housing. The optical detecting device of claim 7, wherein the first housing and the second housing respectively comprise a first through hole and a second through hole, wherein the first through hole corresponds to the carrying platform, and the optical fibers respectively The first through hole and the second through hole are installed. The optical detecting device of claim 8, wherein the spectral detecting module comprises a second movable platform, a first reflecting mirror, a second reflecting mirror, a grating and a spectral detecting component, wherein the second movable platform can be The second housing is movably disposed on the second housing, the first mirror, the second mirror, the grating and the spectrum detecting component are disposed on the second movable platform, and the second through hole corresponds to a first mirror for reflecting the light of the optical object to be tested, and sequentially reflecting the light to the spectrum detecting element via the grating and the second mirror surface, so that the spectrum detecting element senses the light The spectral characteristics of the analyte. The optical detecting device of claim 7, further comprising a base, the first housing and the second housing being respectively disposed on the base.