CN218776554U - Clamp for measuring optical parameters of light guide panel - Google Patents

Abstract

The utility model discloses a clamp for measuring optical parameters of a light guide panel, which comprises a test bench and a fixed column, wherein the test bench is provided with two threaded mounting holes, and the fixed column is buckled with a clamp on the threaded mounting holes; the fixture comprises a base, two rotating shafts penetrate through the base, the base and the rocker arm are connected in series through one of the rotating shafts, limiting blocks are fixed at two ends of the rotating shafts through glue, a left fixing frame and a right fixing frame are fixed at two ends of the rocker arm through the glue respectively, the left fixing frame and the right fixing frame are located on the same plane, one end of the supporting rod is installed on the rocker arm through the rotating shaft and the limiting blocks, and the rotating shaft and the two limiting blocks are sleeved at the other end of the supporting rod. The sliding groove of the rocker arm is connected with a hook through a sliding block. The clamp cannot incline along with the translation of the test bench or the dead weight of the panel to be tested, so that the measuring lens is out of focus.

Description

Clamp for measuring optical parameters of light guide panel

Technical Field

The utility model relates to a light guide control panel's optical parameter inspection field, the inconvenient fixed anchor clamps that develop with removing of some light guide control panel that length is too big on measuring the rack of concretely relates to.

Background

In the manufacturing process of light guide control panels, in-process inspection needs to be performed between specific processes, such as: after the laser etching of the characters on the panel is finished, the light-emitting parameters, namely the light-emitting brightness and the chromaticity, of the characters and the marks on the light-guiding control panel under the power-on condition need to be measured.

At present, the traditional measurement method is to fix the light guide control panel on a test bench, and the test bench can translate along the water and the vertical direction, so as to align the fixed optical measurement lens with different point positions on the panel. For a light guide control panel, it is usually necessary to measure over ten light emitting spots distributed at various positions of the panel. The disadvantages of the current test method are: since the length of the guide rail for fixing the test stage is limited, the maximum range of movement of the test stage is a rectangle whose width and height are fixed values. If the width of the light guide control panel to be measured exceeds the width of the maximum moving range of the test bench, the two ends of the light guide control panel to be measured cannot be aligned with the optical measurement lens, and therefore the measurement result cannot be read. In addition, when the test bench is moved, the power line for supplying power to the light source in the light guide control panel may interfere with the guide rail, the fixed column and other devices related to measurement, so that the movable range of the test bench is smaller, and the observation dead angle of the measurement lens is larger than that of a theoretical area.

In order to allow the measuring lens to align each area on the light guide control panel, the light guide control panel needs to be allowed to rotate by a certain angle in a plane taking the observation direction of the measuring lens as a normal vector, so that the panel is inclined, the actually observable width of the panel is reduced according to the pythagorean theorem, and more measurement points of the panel fall into the rectangular moving range of the test bench.

Therefore, the utility model designs a novel measuring clamp.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a fixture for optical parameter measurement of a light guide panel.

According to the technical solution provided by the embodiment of the present application,

a clamp for measuring optical parameters of a light guide panel comprises a test bench and a fixed column, wherein two threaded mounting holes are formed in the test bench, and a clamp is buckled on the fixed column on the threaded mounting holes;

the clamp comprises a base, two rotating shafts penetrate through the base, one rotating shaft connects the base and the rocker arm together in series, limiting blocks are fixed at two ends of the rotating shaft through glue,

the rocking arm both ends are being fixed left mount and right mount through glue respectively, left side mount and right mount are in the coplanar, the one end of bracing piece is installed through pivot and stopper on the rocking arm, the other end cover of bracing piece is equipped with pivot and two stoppers.

The sliding groove of the rocker arm is connected with a hook through a sliding block.

The utility model discloses in the middle part of base is equipped with the flat recess of a fillet.

The utility model discloses in, the one end of bracing piece is thin, and the other end is thick, and both ends all have the mounting hole.

The utility model discloses in, be equipped with the sliding tray on the rocking arm, be equipped with a plurality of arc teeth in the below of sliding tray, the one end that the bracing piece has the pivot can move about on the arc tooth the one end top that the arc tooth was kept away from to the rocking arm is equipped with a circular open slot, is equipped with a rectangular recess above the sliding tray.

The utility model discloses in, left side mount and right mount are L type structure.

The utility model discloses in, the couple is U type structure.

To sum up, the beneficial effect of this application:

the test bench is convenient to use, can be taken at any time, and does not need to modify other equipment such as a test bench or a measuring lens; due to the application of the sliding block and the hook, the rocker arm is firmly limited in the plane where the two fixed columns of the test bench are located, and the clamp cannot incline along with the translation of the test bench or the dead weight of a panel to be tested, so that the measuring lens is out of focus; the light guide control panel to be tested can be placed on the clamp in an upright or inverted mode by rotating 180 degrees, so that interference of a power line on a fixed column of the test bench or other equipment can be avoided; simple structure, easy maintenance and preservation.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

FIG. 1 is a schematic diagram of a light guide panel optical parameter measurement fixture;

FIG. 2 is a schematic structural diagram of a fixture for measuring optical parameters of a light guide panel;

FIG. 3 is an exploded view of the optical parameter measuring fixture for the light guide panel;

fig. 4 is a schematic view of the light guide panel after the optical parameter measuring jig is stored.

Reference numbers in the figures:

the device comprises a base-1, a rocker-2, a support rod-3, a slider-4, a hook-5, a left fixing frame-6, a right fixing frame-7, a rotating shaft-8, a limiting block-9, a test bench-10, a fixing column-20, a measuring lens-30, a panel-to-be-measured-40 and a clamp-100.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

A fixture is provided, wherein two rotating shafts 8 are arranged on a base 1. The left fixing frame 6 is installed at a proper position at the left end of the rocker arm 2 and fixed by glue, and the right fixing frame 7 is installed at a proper position at the right end of the rocker arm 2, so that the lower plane of the right fixing frame 7 and the lower plane of the left fixing frame 6 are coplanar and fixed by glue.

The through hole at the edge of the rocker arm 2 is aligned and installed with the rotating shaft 8 installed on the right side of the base 1, and whether the rocker arm 2 can rotate around the rotating shaft 8 and is not blocked or not is checked.

The through hole at the edge of the support rod 3 is aligned and installed with the rotating shaft 8 installed on the left side of the base 1, and whether the support rod 3 can rotate by taking the rotating shaft 8 as the center and is free of jamming or not is checked.

The two limit blocks 9 are respectively aligned with the two rotating shafts 8 and fixed by glue, and whether the rocker arm 2 and the support rod 3 can rotate by taking the rotating shafts 8 as centers and are not blocked or stopped is checked again.

The short shaft of the sliding block 4 is inserted into the long-strip-shaped notch of the rocker arm 2, the sliding block slides left and right to ensure that no clamping is caused, the two parts of the sliding block 4 are combined and aligned, and are fixed by glue to ensure that the sliding block 4 can fall off.

The protruding platforms on the side of the hook 5 and the back plane of the slider 4 are aligned and fixed together with glue.

And (5) checking the installation state of each part, such as whether the rotating shaft is cracked and separated rightwards. A light guide control panel sample plate is arranged between a left fixing frame 6 and a right fixing frame 7, and whether a gap between the left fixing frame 6 and the right fixing frame 7 and the rocker arm 2 can just bear and fix the light guide control panel to be detected is checked.

The embodiment is as follows: when measuring the optical parameters of the light guide panel with an oversized length, as shown in fig. 1, firstly, the swing arm 2 of the fixture is rotated to an included angle of about 30 ° to 45 ° with the base 1, and the support frame 4 is rotated to an angle at which the buckle can just butt with the leftmost shallow groove of the swing arm 2, and at this time, the swing arm 2 is in the minimum angle state of the fixture. Then, the slider is moved to the leftmost end, and the jig is fixed to the test stage 100 in the same manner as a general light guide panel, i.e., the jig is clamped by four positioning posts installed on two fixing posts 20. Then, the sliding block moves to the lower right until one of the two fixed columns 20 at the rear is hooked, the rocker arm 2 is slightly shaken, and whether the rocker arm 2 is restrained and stabilized by the hook is checked. And finally, electrifying the panel to be tested, placing the panel between the left fixing frame 6 and the right fixing frame 7, adjusting the position of the test bench 100 and the focal length of the measuring lens 30, and measuring the optical parameters of the panel to be tested. In the measuring process, if the rotation angle of the rocker arm 2 needs to be adjusted, the sliding block 4 needs to be moved a certain distance to the left upper side to enable the hook 5 to be separated from the fixed column 20, then the rocker arm 2 can be rotated to a larger angle, after the top end buckle of the support frame 3 is connected into a proper shallow groove below the rocker arm 2, the sliding block 4 is moved to the right lower side to enable the hook 5 to hook the fixed column 20 again. After the measurement is completed, the panel to be measured should be taken down firstly, the power is cut off, the panel is placed into a special transfer box, then the clamp is taken down, the supporting frame 3 and the rocker arm 2 are retracted as shown in fig. 4, the slide block 4 is moved to the leftmost end, and the clamp 100 is stored.

The foregoing description is only exemplary of the preferred embodiments of the application and is provided for the purpose of illustrating the general principles of the technology and the like. Meanwhile, the scope of the invention according to the present application is not limited to the technical solutions in which the above-described technical features are combined in a specific manner, and also covers other technical solutions in which the above-described technical features or their equivalent are combined arbitrarily without departing from the inventive concept described above. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (6)

1. A clamp for measuring optical parameters of a light guide panel comprises a test bench (10) and a fixed column (20), wherein two threaded mounting holes are formed in the test bench (10), and a clamp (100) is clamped on the fixed column (20) on the threaded mounting holes; the method is characterized in that:

the clamp (100) comprises a base (1), two rotating shafts (8) penetrate through the base (1), one rotating shaft (8) connects the base (1) and the rocker arm (2) in series, limiting blocks (9) are fixed at two ends of each rotating shaft (8) through glue,

a left fixing frame (6) and a right fixing frame (7) are fixed at two ends of the rocker arm (2) through glue respectively, the left fixing frame (6) and the right fixing frame (7) are located on the same plane, one end of a supporting rod (3) is installed on the rocker arm (2) through a rotating shaft (8) and limiting blocks (9), and the other end of the supporting rod (3) is sleeved with the rotating shaft (8) and the two limiting blocks (9);

the sliding groove of the rocker arm (2) is connected with a hook (5) through a sliding block (4).

2. The fixture for measuring optical parameters of a light guide panel according to claim 1, wherein: the middle part of the base (1) is provided with a round-cornered flat-bottom groove.

3. The fixture for measuring optical parameters of a light guide panel according to claim 1, wherein: one end of the supporting rod (3) is thin, the other end of the supporting rod is thick, and mounting holes are formed in the two ends of the supporting rod.

4. The fixture for measuring optical parameters of a light guide panel according to claim 1, wherein: be equipped with the sliding tray on rocking arm (2), be equipped with a plurality of arc teeth in the below of sliding tray, the one end that bracing piece (3) have pivot (8) can move about on the arc tooth the one end top of arc tooth is kept away from in rocking arm (2) is equipped with a circular open slot, is equipped with a rectangular recess above the sliding tray.

5. The fixture for measuring optical parameters of a light guide panel according to claim 1, wherein: the left fixing frame (6) and the right fixing frame (7) are both L-shaped structures.

6. The fixture for measuring optical parameters of a light guide panel according to claim 1, wherein: the hook (5) is of a U-shaped structure.

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