Optical waveguide test projection pen and optical waveguide test equipment
By placing multiple light sources on the same side and detachably connecting them to the optical waveguide in the optical waveguide testing equipment, the problems of large equipment size and poor portability are solved, and the equipment is miniaturized and can be tested quickly.
Patent Information
- Application Number
- CN202511178052.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-21
- Publication Date
- 2025-11-25
AI Technical Summary
Existing optical waveguide testing equipment is bulky, resulting in poor portability and making it unsuitable for rapid testing.
Multiple light sources of different colors are placed on the same side of the lamp board, with the light emission direction all facing the test chart. This reduces the size of the light source module along the axis of the housing and allows it to be detachably connected to the optical waveguide via a mounting bracket, so that the imaging lens group emits light towards the coupling area of the optical waveguide at a set coupling angle.
The size of the optical waveguide testing projection pen and equipment has been reduced, improving portability and testing speed, and enabling rapid testing of incoming materials.
Smart Images
Figure CN121007690A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] Embodiments of the present application relate to the technical field of optical waveguide testing, and particularly relate to an optical waveguide testing projection pen and an optical waveguide testing device. BACKGROUND
[0002] An optical waveguide is an optical structure capable of guiding the transmission of light waves in a specific path, and is widely used in the fields of augmented reality (AR), virtual reality (VR), and optical communication.
[0003] In related technologies, the projection light machine of the optical waveguide testing device mainly uses a standard light source, which has a complex structure, including separate red, green, blue, and white light sources, and each light source needs an independent color filter, a light splitting component, and a mirror group, resulting in a large volume and poor portability. SUMMARY
[0004] Therefore, the main purpose of the embodiments of the present application is to provide an optical waveguide testing projection pen and an optical waveguide testing device to solve the technical problem of a large volume of the optical waveguide testing device.
[0005] To achieve the above-mentioned purpose, the embodiments of the present application provide an optical waveguide testing projection pen, comprising: a shell, a light source module, a test chart, an imaging lens group, and a mounting bracket.
[0006] The light source module, the test chart, and the imaging lens group are sequentially arranged in the shell along the axial direction of the shell.
[0007] The light source module comprises a lamp plate and a plurality of light sources of different colors; the two sides of the lamp plate are respectively directed to the two ends of the axial direction of the shell; and the plurality of light sources are arranged on the side of the lamp plate close to the test chart.
[0008] The mounting bracket is detachably connected to one end of the shell close to the imaging lens group, and the mounting bracket is used for detachable connection with the optical waveguide and makes the imaging lens group emit light towards the coupling-in area of the optical waveguide at a set coupling-in angle.
[0009] In some embodiments that can include the above-mentioned embodiments, the optical waveguide testing projection pen further comprises a polarization piece and a collimating lens group, and the polarization piece and the collimating lens group are both arranged in the shell.
[0010] The polarization piece and the collimating lens group are sequentially arranged between the light source module and the test chart along the axial direction of the shell, and the polarization piece is located between the light source module and the collimating lens group.
[0011] In some embodiments that can include the above-mentioned embodiments, the light source module further comprises a light-transmitting shell, and the lamp plate and the plurality of light sources are both arranged in the light-transmitting shell.
[0012] In some embodiments which can comprise the above-mentioned embodiments, the plurality of mounting racks are configured to be connected to the housing, and the plurality of mounting racks are configured to be used for the light guide with different shapes and / or different set coupling angles.
[0013] The plurality of mounting racks are alternatively connected to the housing.
[0014] In some embodiments which can comprise the above-mentioned embodiments, the mounting rack is configured to be provided with a hook structure, and the hook structure is configured to be connected to the light guide and configured to make the axis of the housing and the normal line of the light guide form the set coupling angle.
[0015] In some embodiments which can comprise the above-mentioned embodiments, the mounting rack comprises:
[0016] The first limiting part is detachably connected to the housing, and the first limiting part is configured to be directed to and stopped at the front side of the light guide;
[0017] The second limiting part is connected to the first limiting part, and the bottom of the second limiting part is configured to be stopped at the top end of the light guide;
[0018] The third limiting part is connected to the second limiting part, and the third limiting part is spaced apart from the first limiting part, and the side of the third limiting part directed to the first limiting part is configured to be stopped at the rear side of the light guide;
[0019] The first limiting part, the second limiting part and the third limiting part form the hook structure.
[0020] In some embodiments which can comprise the above-mentioned embodiments, the plurality of test cards are configured to have different images respectively.
[0021] The plurality of test cards are alternatively arranged in the housing.
[0022] In some embodiments which can comprise the above-mentioned embodiments, the housing is configured to be provided with a slot, and the test card is arranged in the slot.
[0023] In some embodiments which can comprise the above-mentioned embodiments, the light guide test projection pen further comprises a power supply device, a control button, a controller and a plurality of driving circuits.
[0024] The power supply device is arranged in the housing, and the power supply device is electrically connected to the plurality of light sources through the plurality of driving circuits respectively to supply power to the plurality of light sources respectively.
[0025] The control button is arranged in the housing, and part of the control button is arranged outside the housing.
[0026] The plurality of driving circuits and the control button are electrically connected to the controller respectively, and the controller is configured to control the conduction state of the plurality of driving circuits according to the number of times of pressing the control button to switch the color of the light source emitting light.
[0027] The embodiment of the present application also provides a light waveguide testing device, comprising: a transfer stage, a bright colorimeter, a first electronic moving shaft, a second electronic moving shaft and the light waveguide testing projection pen in any one of the above embodiments;
[0028] The transfer stage is used for placing the light waveguide;
[0029] The imaging lens group of the light waveguide testing projection pen is used for being directed to the coupling-in area of the light waveguide;
[0030] The first electronic moving shaft is connected with the light waveguide testing projection pen and drives the light waveguide testing projection pen to move;
[0031] The imaging lens group of the bright colorimeter is directed to the coupling-out area of the light waveguide;
[0032] The second electronic moving shaft is connected with the bright colorimeter and drives the bright colorimeter to move.
[0033] The light waveguide testing projection pen and the light waveguide testing device provided by the embodiment of the present application set multiple light sources of different colors on the same side of the lamp panel, and the light emitting directions of the multiple light sources are all directed to the test chart, which reduces the size of the light source module along the axis direction of the shell, thereby reducing the volume of the light source module and the light waveguide testing projection pen. Since the light emitting directions of the multiple light sources are all directed to the test chart, it is not necessary to additionally set a color filter and a beam splitter, and the volume of the light waveguide testing projection pen and the light waveguide testing device is further reduced. BRIEF DESCRIPTION OF DRAWINGS
[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.
[0035] Figure 1 The structure schematic diagram of the diffractive light waveguide to which the light waveguide testing projection pen provided by the embodiment of the present application is applied;
[0036] Figure 2 The left view of Figure 1 ;
[0037] Figure 3 The structure schematic diagram of the light waveguide testing projection pen provided by the embodiment of the present application;
[0038] Figure 4 The structure schematic diagram of the light source module in the light waveguide testing projection pen provided by the embodiment of the present application;
[0039] Figure 5 The left view of Figure 4 ;
[0040] Figure 6 Structure schematic diagram of the light waveguide test projection pen provided by the application applied to the diffractive light waveguide;
[0041] Figure 7 Structure schematic diagram of the array light waveguide to which the light waveguide test projection pen provided by the application is applicable;
[0042] Figure 8 Structure schematic diagram of the light waveguide test projection pen provided by the application applied to the array light waveguide; Figure 7 Structure schematic diagram of the light waveguide test projection pen provided by the application applied to the array light waveguide;
[0043] Figure 9 Structure schematic diagram of the light waveguide test projection pen provided by the application applied to the array light waveguide;
[0044] Figure 10 Structure schematic diagram of the test picture card in the light waveguide test projection pen provided by the application Figure 1 ;
[0045] Figure 11 Structure schematic diagram of the test picture card in the light waveguide test projection pen provided by the application Figure 2 ;
[0046] Figure 12 Structure schematic diagram of the test picture card in the light waveguide test projection pen provided by the application Figure 3 ;
[0047] Figure 13 Structure schematic diagram of the test picture card in the light waveguide test projection pen provided by the application Figure 4 ;
[0048] Figure 14 Structure schematic diagram of the connection between the power supply device and the light source module in the light waveguide test projection pen provided by the application;
[0049] Figure 15 Structure schematic diagram of the light waveguide test device provided by the application applied to the diffractive light waveguide;
[0050] Figure 16 Structure schematic diagram of the light waveguide test device provided by the application applied to the array light waveguide.
[0051] Explanation of reference signs:
[0052] 10, shell; 101, slot;
[0053] 20, light source module; 210, light source; 211, red light source; 212, green light source; 213, blue light source; 214, white light source; 220, lamp plate;
[0054] 30, polarization member;
[0055] 40, test chart;
[0056] 50, collimating lens group;
[0057] 60, imaging lens group;
[0058] 70, power supply device;
[0059] 80, mounting frame; 801, first limiting part; 802, second limiting part; 803, third limiting part;
[0060] 90, control button;
[0061] 110, driving circuit; 111, driving circuit of red light source; 112, driving circuit of green light source; 113, driving circuit of blue light source; 114, driving circuit of white light source;
[0062] 100, optical waveguide test projection pen;
[0063] 200, transfer stage;
[0064] 300, bright colorimeter;
[0065] 400, optical waveguide; 410, diffracted light optical waveguide; 420, array light optical waveguide; 401, coupling-in area; 402, coupling-out area; 403, pupil expanding area;
[0066] 500, first electronic movement axis;
[0067] 600, second electronic movement axis. DETAILED DESCRIPTION
[0068] First, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. Those skilled in the art can adjust them as needed in order to adapt to specific application occasions.
[0069] Secondly, it should be noted that in the description of the embodiments of the present application, the terms indicating the direction or positional relationship of the terms "in", "out" and the like are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0070] In addition, it needs to be explained that, in the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0071] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0072] As described in the background, the optical waveguide detection device in the related art includes a projection light machine, which mainly uses a standard light source including individual R (Red), G (Green), B (Blue), and W (White) light sources. The blue light source emits light along the axial direction of the light path, and the other light sources are arranged at intervals along the extension direction of the light path and emit light along the radial direction of the light path. Each light source is added with a color filter to extract the required wavelength. In order to use the same light path, R, G, and W are split by a beam splitter. Each light source of the standard light source requires an independent lens group, so a total of four lens groups are required. The above results in a relatively large volume of the projection light machine, poor portability, and the projection light machine is mainly assembled on an optical test machine, which cannot be used for rapid detection such as incoming inspection.
[0073] In view of the above technical problems, the embodiments of the present application provide an optical waveguide test projection pen and an optical waveguide test device. A plurality of light sources of different colors are arranged on the same side of a lamp panel, and the light emitting directions of the plurality of light sources are all directed towards a test chart. The size of the light source module in the axial direction of the shell is reduced, thereby reducing the volume of the light source module and the optical waveguide test projection pen. Since the light emitting directions of the plurality of light sources are all directed towards the test chart, there is no need to additionally arrange a color filter and a beam splitter, which further reduces the volume of the optical waveguide test projection pen and improves the portability of the optical waveguide test projection pen. In addition, the optical waveguide test projection pen can be connected to the optical waveguide through a mounting frame, and the imaging lens group emits light towards the coupling-in area of the optical waveguide at a set coupling-in angle, so as to quickly project the test pattern to the coupling-in area of the optical waveguide, thereby improving the detection rate of the optical waveguide and enabling the optical waveguide test projection pen to be used for incoming inspection rapid detection.
[0074] The principles and characteristics of the embodiments of the present application are described below with reference to the accompanying drawings, which are only used to explain the embodiments of the present application and not to limit the scope of the embodiments of the present application.
[0075] With reference to Figure 1 and Figure 2 The optical waveguide 400 can have a coupling-in region 401, a coupling-out region 402, and a pupil expanding region 403.
[0076] The coupling-in region 401 of the optical waveguide 400 is a part of the optical waveguide structure for coupling external light into the waveguide substrate.
[0077] The coupling-out region 402 of the optical waveguide 400 is a part of the optical waveguide 400 for coupling out the light transmitted in the waveguide, which is the exit end of the light.
[0078] The pupil expanding region 403 of the optical waveguide 400 is used to expand and turn the light, improving the adaptability of the optical waveguide 400 to different user pupil distances and eye positions.
[0079] With reference to Figure 3 The present embodiment provides an optical waveguide test projection pen 100, which comprises a shell 10, a light source module 20, a test chart 40, an imaging lens group 60, and a mounting bracket 80.
[0080] The shell 10 can be generally cylindrical or cuboid, etc. The shell 10 can extend along the axial direction. The shell 10 is internally structured with a receiving cavity.
[0081] The light source module 20, the test chart 40, and the imaging lens group 60 are sequentially arranged in the receiving cavity of the shell 10 along the axial direction X of the shell 10.
[0082] The light source module 20 is used to provide controllable incident light to excite the optical response of the optical waveguide 400, so as to accurately evaluate the performance of the optical waveguide 400 by detecting the transmission, modulation, imaging, etc. characteristics of the light.
[0083] The test chart 40 is a standard carrier carrying a specific optical pattern, which indirectly evaluates the key optical performance (such as resolution, imaging quality, distortion, uniformity, etc.) of the optical waveguide 400 through the transmission and imaging effect of the pattern on the test chart 40 by the optical waveguide 400.
[0084] The imaging lens group 60 can be a system composed of multiple lenses according to a specific optical design, which is used to accurately and efficiently couple the test image into the optical waveguide 400, and ensure that the projected image characteristics (such as definition, size, angle) match the input requirements of the optical waveguide 400, providing a standardized “signal source” for subsequent testing.
[0085] With reference to Figure 4 and Figure 5The light source module 20 includes a lamp plate 220 and a plurality of light sources 210 of different colors, such as a red light source 211, a green light source 212, a blue light source 213, and a white light source 214. The surface of the lamp plate 220 can be substantially perpendicular to the extension direction of the shell 10. The two sides of the lamp plate 220 are respectively directed to the two ends of the axis direction X of the shell 10. The plurality of light sources 210 are arranged on the side of the lamp plate 220 close to the test chart 40, that is, the light emitting directions of the plurality of light sources 210 are all directed to the test chart 40.
[0086] The plurality of light sources 210 of different colors are arranged on the same side of the lamp plate 220, and the light emitting directions of the plurality of light sources 210 are all directed to the test chart 40, which reduces the size of the light source module 20 along the axis direction X of the shell 10, thereby reducing the volume of the light source module 20 and the optical waveguide test projection pen 100.
[0087] Since the light emitting directions of the plurality of light sources 210 are all directed to the test chart 40, it is not necessary to adjust the transmission direction of the light emitted by the light source 210, and it is not necessary to additionally arrange a color filter and a beam splitter, thereby further reducing the volume of the optical waveguide test projection pen 100 and improving the portability of the optical waveguide test projection pen 100.
[0088] In some embodiments, the light source module 20 can further include a light-transmitting shell having light-transmitting property so that light can propagate through the light-transmitting shell. The lamp plate 220 and the plurality of light sources 210 can be arranged in the light-transmitting shell to encapsulate the lamp plate 220 and the plurality of light sources 210 in the light-transmitting shell.
[0089] The shape of the light-transmitting shell can be adapted to the shape of the shell 10, for example, when the shell 10 is approximately cylindrical, the light-transmitting shell can be a cylinder with small height or a cuboid with small size along the axis direction X of the shell 10, so that the light-transmitting shell can be fitted into the shell 10.
[0090] When the light source module 20 is fitted into the shell 10, only the light-transmitting shell encapsulating the lamp plate 220 and the plurality of light sources 210 needs to be fitted into the shell 10, thereby simplifying the disassembly and assembly process of the light source module 20.
[0091] The mounting bracket 80 is detachably connected to the end of the shell 10 close to the imaging lens group 60.
[0092] Reference Figure 6 The mounting bracket 80 is used to detachably connect with the optical waveguide 400 and make the imaging lens group 60 emit light at a set coupling angle a towards the coupling-in region 401 of the optical waveguide 400. The performance indicators of the optical waveguide 400 are quickly analyzed by observing the exit image from the coupling-out region 402 of the optical waveguide 400, thereby improving the detection rate of the optical waveguide 400 and being suitable for incoming inspection.
[0093] When it is needed to fix the optical waveguide testing projection pen 100 to the optical waveguide 400, the mounting rack 80 is mounted to the shell 10, and the optical waveguide 400 is connected to the mounting rack 80.
[0094] The structure of the mounting rack 80 is reasonably arranged, so that after the optical waveguide 400 is connected to the mounting rack 80, the imaging lens group 60 emits light towards the coupling-in area 401 of the optical waveguide 400 at the set coupling-in angle α, so as to quickly project the test pattern to the coupling-in area 401 of the optical waveguide 400, and improve the detection speed of the optical waveguide 400, which can be used for incoming inspection.
[0095] When it is needed to handhold the optical waveguide testing projection pen 100, or it is needed to assemble the optical waveguide testing projection pen 100 on the optical testing machine, the mounting rack 80 can be detached from the shell 10, so as to adjust the position and the coupling-in angle of the optical waveguide testing projection pen 100 relative to the coupling-in area 401 of the optical waveguide 400.
[0096] In some possible implementation manners of the embodiments of the present application, the mounting rack 80 can be multiple, and the multiple mounting racks 80 are respectively used for corresponding optical waveguides 400 with different shapes, and / or corresponding different set coupling-in angles. The multiple mounting racks 80 are alternatively connected to the shell 10.
[0097] The optical waveguide 400 used for testing in the embodiments of the present application can be a diffractive light optical waveguide 410 (refer to Figure 1 and Figure 2 ), or an array light optical waveguide 420 (refer to Figure 7 and Figure 8 ), etc.
[0098] The multiple mounting racks 80 can include first part mounting racks 80, the number of the first part mounting racks 80 can be multiple, and the multiple mounting racks 80 in the first part mounting racks 80 are used for adapting to the same specification of the diffractive light optical waveguide 410, and the multiple mounting racks 80 in the first part mounting racks 80 respectively correspond to different set coupling-in angles. That is, the coupling-in angle of the optical waveguide testing projection pen 100 entering the coupling-in area 401 of the diffractive light optical waveguide 410 is different after each mounting rack 80 in the first part mounting racks 80 is connected to the diffractive light optical waveguide 410.
[0099] Reference is made to Figure 6When the light waveguide test projection pen 100 needs to be detected to enter the coupling-in region 401 of the diffractive light waveguide 410 at different coupling-in angles a, the performance of the diffractive light waveguide 410 can be realized by switching different mounting racks 80, without the need to control the light waveguide test projection pen 100 through other equipment, so as to quickly project the test pattern to the coupling-in region 401 of the light waveguide 400 at the set coupling-in angle a, and quickly analyze the performance index of the light waveguide 400 by observing the exit image from the coupling-out region 402 of the light waveguide 400, thereby improving the detection rate of the light waveguide 400 and being suitable for incoming inspection.
[0100] The plurality of mounting racks 80 can further include a second part mounting rack 80, the number of the second part mounting rack 80 can be multiple, and the plurality of mounting racks 80 in the second part mounting rack 80 can be used to adapt to the same specification of the array light waveguide 420. The plurality of mounting racks 80 in the second part mounting rack 80 are respectively used to correspond to different set coupling-in angles. That is, the coupling-in angles of the light waveguide test projection pen 100 entering the coupling-in region 401 of the array light waveguide 420 are different after the mounting racks 80 in the second part mounting rack 80 are connected with the array light waveguide 420.
[0101] Reference Figure 9 When the light waveguide test projection pen 100 needs to be detected to enter the coupling-in region 401 of the array light waveguide 420 at different coupling-in angles a, the performance of the array light waveguide 420 can be realized by switching different mounting racks 80, without the need to control the light waveguide test projection pen 100 through other equipment, so as to quickly project the test pattern to the coupling-in region 401 of the light waveguide 400 at the set coupling-in angle a (the coupling-in prism 401 in Figure 9 ), and quickly analyze the performance index of the light waveguide 400 by observing the exit image from the coupling-out region 402 (the array reflection surface 402 in Figure 9 ) of the light waveguide 400, thereby improving the detection rate of the light waveguide 400 and being suitable for incoming inspection.
[0102] The light waveguide test projection pen 100 in the embodiment of the application, when detecting the array light waveguide 420, the coupling-in region 401 of the array light waveguide 420 can be a coupling-in prism on the array light waveguide 420, and the coupling-out region 402 of the array light waveguide 420 can be an array reflection surface 402 of the array light waveguide 420. The light waveguide test projection pen 100 projects the projection pattern into the coupling-in prism of the array light waveguide 420, and quickly judges the performance of the array light waveguide 400 by observing the exit image of the array reflection surface 402.
[0103] The detachable connection mode of the mounting rack 80 and the shell 10 is described below.
[0104] In some possible implementations of the embodiments of this application, the mounting bracket 80 can be connected to the housing 10 by fastening bolts, so that the mounting bracket 80 can be detachably mounted on the housing 10.
[0105] In some other possible implementations of the embodiments of this application, the mounting bracket 80 may be constructed with a threaded hole, the outer shell 10 of the outer shell 10 may be constructed with threads, the outer shell 10 may be inserted into the threaded hole and threadedly connected to the mounting bracket 80, so that the mounting bracket 80 may be detachably disposed on the outer shell 10.
[0106] It is understandable that the mounting bracket 80 can also be snapped onto the housing 10, as long as the mounting bracket 80 can be detachably mounted onto the housing 10.
[0107] The following is for reference Figure 6 and Figure 9 The mounting bracket 80 is adapted to a structure that can be detachably connected to the optical waveguide 400.
[0108] In some possible implementations of the embodiments of this application, the mounting bracket 80 may be configured to have a hook structure for attaching to the optical waveguide 400 and to make the axis of the housing 10 form a set coupling angle with the normal of the optical waveguide 400.
[0109] In some embodiments, the mounting bracket 80 may include a first limiting part 801, a second limiting part 802, and a third limiting part 803, wherein the first limiting part 801, the second limiting part 802, and the third limiting part 803 form a hook structure.
[0110] The first limiting part 801 is detachably connected to the housing 10 and is used to face and stop the front side of the optical waveguide 400. When the first limiting part 801 stops the front side of the optical waveguide 400, the axis of the housing 10 and the normal of the optical waveguide 400 form a set coupling angle.
[0111] The second limiting part 802 is connected to the first limiting part 801, and the bottom of the second limiting part 802 is used to stop the top of the optical waveguide 400.
[0112] The third limiting part 803 is connected to the second limiting part 802. The third limiting part 803 is spaced apart from the first limiting part 801. The side of the third limiting part 803 facing the first limiting part 801 is used to stop the rear side of the optical waveguide 400.
[0113] The first limiting part 801, the second limiting part 802 and the third limiting part 803 form a hook structure which can be hooked on the top of the optical waveguide 400. When the hook structure is hooked on the top of the optical waveguide 400, the imaging lens group 60 emits light towards the coupling-in area 401 of the optical waveguide 400 at a set coupling-in angle, so as to quickly project the test pattern to the coupling-in area 401 of the optical waveguide 400 at the set coupling-in angle.
[0114] It can be understood that the mounting rack 80 can also be configured with other forms of hook structures as long as the mounting rack 80 can be hooked on the top of the optical waveguide 400.
[0115] In other embodiments, the mounting rack 80 can be a plate with a certain thickness, and the thickness of the mounting rack 80 is greater than the thickness of the optical waveguide 400 to be fitted. The bottom of the mounting rack 80 can be configured with a clamping channel, and both ends of the clamping channel in the extension direction penetrate through the mounting rack 80. The size of the clamping channel along the thickness direction of the mounting rack 80 is greater than the thickness of the optical waveguide 400 to be fitted, so that the optical waveguide 400 can be arranged in the clamping channel through the bottom of the clamping channel, thereby detachably connecting the mounting rack 80 to the optical waveguide 400.
[0116] In some possible implementation manners of the embodiments of the present application, with reference to Figure 10 , Figure 11 , Figure 12 and Figure 13 , the test chart 40 can be multiple, and the multiple test charts 40 respectively have different images for respectively testing different performances of the optical waveguide 400. The multiple test charts 40 are alternatively arranged in the housing 10.
[0117] The performance test of the optical waveguide 400 can include tests of resolution, distortion, contrast, field of view angle and the like of the optical waveguide 400.
[0118] When using the optical waveguide test projection pen 100, the corresponding test chart 40 can be selected according to the test requirement of the performance of the optical waveguide 400.
[0119] For example, when the field of view angle of the optical waveguide 400 needs to be tested, the test chart 40 of the full field of view angle can be selected (with reference to Figure 10 ).
[0120] When the distortion of the optical waveguide 400 needs to be tested, the test chart 40 of the chessboard can be selected (with reference to Figure 11 ). By observing whether the chessboard lines are curved and the squares are deformed after imaging, it can be judged whether the optical waveguide 400 has geometric distortion and the degree of the distortion. It can also be used for contrast test of the optical waveguide 400, and the performance of the optical waveguide 400 on different brightness signals can be evaluated according to the light and dark contrast between the black and white squares.
[0121] When the modulation transfer function of the optical waveguide 400 in the horizontal direction needs to be tested, the test chart 40 of the horizontal modulation transfer function chart can be selected (refer to Figure 12 Through the horizontal modulation transfer function chart, the transmission of the optical waveguide 400 to the pattern of different spatial frequencies in the horizontal direction can be understood, and then the resolution, imaging sharpness, and whether there is a performance difference in the direction of the optical waveguide 400 can be judged. If the modulation transfer function value of the optical waveguide 400 in the horizontal direction is low, it means that the resolution of the details in this direction is poor, and the imaging may appear blurred and other problems.
[0122] When the modulation transfer function of the optical waveguide 400 in the vertical direction needs to be tested, the test chart 40 of the vertical modulation transfer function chart can be selected (refer to Figure 13 Through the vertical modulation transfer function chart, the transmission of the optical waveguide 400 to the pattern of different spatial frequencies in the vertical direction can be understood, and then the resolution, imaging sharpness, and whether there is a performance difference in the direction of the optical waveguide 400 can be judged. If the modulation transfer function value of the optical waveguide 400 in the vertical direction is low, it means that the resolution of the details in this direction is poor, and the imaging may appear blurred and other problems.
[0123] In some possible implementation manners of the embodiments of the present application, referring to Figure 3 The shell 10 can be configured with a slot 101, and the slot of the slot 101 can face upward. The test chart 40 can be inserted into the slot 101 from the slot of the slot 101, so as to facilitate the replacement of the test chart 40 according to the test requirements.
[0124] In some possible implementation manners of the embodiments of the present application, referring to Figure 3 and Figure 14 The optical waveguide test projection pen 100 can further include a power supply device 70 and a plurality of driving circuits 110.
[0125] The power supply device 70 can be a primary battery, or a rechargeable battery, etc. The power supply device 70 is detachably arranged in the shell 10, and the power supply device 70 is used to supply power for the light source module 20.
[0126] The shell 10 can include a shell body and a cover plate. The shell body can be configured with a battery slot, and the power supply device 70 can be arranged in the battery slot. The cover plate is detachably connected with the shell body, and the cover plate covers the slot of the battery slot. When the cover plate is opened, the power supply device 70 can be disassembled, thereby improving the convenience of disassembling the power supply device 70.
[0127] The driving circuit 110 is arranged in one-to-one correspondence with the light source 210, and the power supply device 70 is electrically connected to each light source 210 through each driving circuit 110, so as to supply power to the plurality of light sources 210 respectively.
[0128] With reference to Figure 14 , the driving circuit 110 can include a driving circuit 111 of a red light source, a driving circuit 112 of a green light source, a driving circuit 113 of a blue light source, and a driving circuit 114 of a white light source, etc.
[0129] The driving circuit 111 of the red light source is connected between the power supply device 70 and the red light source 211.
[0130] The driving circuit 112 of the green light source is connected between the power supply device 70 and the green light source 212.
[0131] The driving circuit 113 of the blue light source is connected between the power supply device 70 and the blue light source 213.
[0132] The driving circuit 114 of the white light source is connected between the power supply device 70 and the white light source 214.
[0133] In some possible implementation manners of the embodiments of the present application, with reference to Figure 3 The optical waveguide test projection pen 100 can further include a control button 90 and a controller.
[0134] The control button 90 can be arranged on the shell 10, and part of the control button 90 is located outside the shell 10.
[0135] The plurality of driving circuits 110 and the control button 90 are electrically connected to the controller respectively, and the controller is configured to control the conduction state of the plurality of driving circuits 110 according to the number of presses of the control button 90, so as to switch the light source 210 emitting light.
[0136] The light source 210 conducting with the power supply device 70 is switched by pressing the control button 90, so as to switch the color of the light source 210 emitting light, and the performance of the optical waveguide 400 when the light source 210 of different colors passes through the optical waveguide 400 is tested.
[0137] In some embodiments, the plurality of light sources 210 are electrically connected to the power supply device 70 through the corresponding driving circuits 110 respectively, and the light source 210 emits light when the driving circuit 110 of the light source 210 is turned on.
[0138] The optical waveguide test projection pen 100 can include a controller, which can be a single-chip microcomputer or a driving chip, and the controller pre-stores a corresponding program of “button-color”, such as:
[0139] Initial state: power off;
[0140] The first time the button is pressed: the driving circuit 114 of the white light source 214 is turned on, and the driving circuits of other color light sources 210 are turned off;
[0141] The second time the button is pressed: the driving circuit 114 of the white light source 214 is turned off, and the driving circuit 111 of the red light source 211 is turned on;
[0142] The third time the button is pressed: the driving circuit 111 of the red light source 211 is turned off, and the driving circuit 113 of the blue light source 213 is turned on;
[0143] The fourth time the button is pressed: the driving circuit 113 of the blue light source 213 is turned off, and the driving circuit 112 of the green light source 212 is turned on;
[0144] The fifth time the button is pressed: the driving circuits of all light sources 210 are turned off;
[0145] The long press of the button: the driving circuits of all light sources 210 are turned off.
[0146] After the first time the control button 90 is pressed, the controller controls the driving circuit 114 of the white light source 214 to be turned on, and controls the driving circuits of other color light sources 210 to be turned off, so that only the white light source 214 emits light.
[0147] After the second time the control button 90 is pressed, the controller controls the driving circuit 111 of the red light source 211 to be turned on, and controls the driving circuits of other color light sources 210 to be turned off, so that only the red light source 211 emits light.
[0148] After the third time the control button 90 is pressed, the controller controls the driving circuit 113 of the blue light source 213 to be turned on, and controls the driving circuits of other color light sources 210 to be turned off, so that only the blue light source 213 emits light.
[0149] After the fourth time the control button 90 is pressed, the controller controls the driving circuit 112 of the green light source 212 to be turned on, and controls the driving circuits of other color light sources 210 to be turned off, so that only the green light source 212 emits light.
[0150] After the fifth time the control button 90 is pressed, the controller controls the driving circuits of all light sources 210 to be turned off, so that the light source module 20 does not emit light of any color.
[0151] After the long press of the control button 90, the controller controls the driving circuits of all light sources 210 to be turned off, so that the light source module 20 does not emit light of any color.
[0152] In some possible implementation manners of the embodiments of the present application, referring to Figure 3 The optical waveguide test projection pen 100 further includes a polarizing piece 30 and a collimating lens group 50, both of which are arranged in the housing 10.
[0153] The polarizer 30 and the collimating lens group 50 are sequentially arranged between the light source module 20 and the test chart 40 along the axial direction X of the housing 10, and the polarizer 30 is located between the light source module 20 and the collimating lens group 50. That is, the light source module 20, the polarizer 30, the collimating lens group 50, the test chart 40 and the imaging lens group 60 are sequentially arranged along the axial direction X in the housing 10.
[0154] In some embodiments, the polarizer 30 can be a polarizing plate, which converts the light emitted by the light source module 20 into linearly polarized light, filters out light of non-specific vibration direction, and only allows light vibrating in a certain fixed direction to pass through, thereby separating or screening the target polarization mode and excluding the interference of other polarization states.
[0155] In other embodiments, the polarizer 30 can also be a fiber polarization controller or other component that can convert light into linearly polarized light. The fiber polarization controller can convert the light emitted by the light source module 20 into stable linearly polarized light, thereby separating or screening the target polarization mode and excluding the interference of other polarization states.
[0156] The collimating lens group 50 can be an optical system composed of one or more lenses, and the core function is to convert the divergent light beam output from the polarizer 30 into a parallel light beam, realize "collimation", keep the diameter of the light beam substantially unchanged during propagation, reduce energy diffusion, and facilitate efficient transmission of the subsequent optical path.
[0157] With reference to Figure 15 and Figure 16 , the embodiment of the present application also provides an optical waveguide testing device, comprising: a transfer stage 200, a bright colorimeter 300, a first electronic moving shaft 500, a second electronic moving shaft 600 and the optical waveguide testing projection pen 100 in the foregoing embodiment.
[0158] The optical waveguide testing device in the embodiment comprises the optical waveguide testing projection pen 100 in the foregoing embodiment. The specific structure, working principle and functions of the optical waveguide testing projection pen 100 have been described in detail in the foregoing embodiment, and will not be repeated here.
[0159] The transfer stage 200 is used for placing the optical waveguide 400.
[0160] The imaging lens group 60 of the optical waveguide testing projection pen 100 is used for being directed to the coupling-in region 401 of the optical waveguide 400.
[0161] With reference to Figure 15 , the imaging lens group 60 of the optical waveguide testing projection pen 100 is used for being directed to the coupling-in region 401 of the diffraction optical waveguide 400.
[0162] With reference to Figure 16The imaging lens group 60 of the light waveguide test projection pen 100 is used to face the coupling-in prism 401 of the array light waveguide 400.
[0163] In the light waveguide test device in the embodiment, the light waveguide test projection pen 100 does not need to be installed on the mounting bracket 80, but is connected with the first electronic moving shaft 500 and driven to move by the first electronic moving shaft 500. The first electronic moving shaft 500 is used to adjust the relative position of the light waveguide test projection pen 100, so as to achieve different test purposes, ensure the accuracy and reliability of the test, and improve the test efficiency.
[0164] The imaging lens group 60 of the bright colorimeter 300 faces the coupling-out area 402 of the light waveguide 400. The bright colorimeter 300 is used to accurately measure the brightness, chromaticity, uniformity and other optical characteristics of the light emitted by the light waveguide 400. The bright colorimeter 300 is used to convert the light signal into a quantifiable electrical signal, and provides key data support for evaluating the display performance and transmission quality of the light waveguide 400.
[0165] The second electronic moving shaft 600 is connected with the bright colorimeter 300 and drives the bright colorimeter 300 to move. The second electronic moving shaft 600 is used to adjust the relative position of the bright colorimeter 300, so as to achieve different test purposes, ensure the accuracy and reliability of the test, and improve the test efficiency.
[0166] In the light waveguide test device in the embodiment, the plurality of light sources 210 of different colors are arranged on the same side of the lamp panel 220, and the light emitting directions of the plurality of light sources 210 are all towards the test chart 40. The size of the light source module 20 along the axis direction X of the shell 10 is reduced, so that the volume of the light source module 20 and the light waveguide test projection pen 100 is reduced. Since the light emitting directions of the plurality of light sources 210 are all towards the test chart 40, the color filter and the beam splitter do not need to be additionally arranged, and the volume of the light waveguide test projection pen 100 and the light waveguide test device is further reduced.
[0167] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A waveguide testing projection pen, characterized in that, include: Housing (10), light source module (20), test chart (40), imaging lens group (60) and mounting bracket (80); The light source module (20), the test chart (40), and the imaging lens group (60) are sequentially arranged inside the housing (10) along the axial direction of the housing (10); The light source module (20) includes a lamp board (220) and multiple light sources (210) of different colors; the two sides of the lamp board (220) are respectively facing the two ends of the axial direction of the outer shell (10); the multiple light sources (210) are all arranged on the side of the lamp board (220) close to the test chart (40); The mounting bracket (80) is detachably connected to one end of the housing (10) near the imaging lens assembly (60). The mounting bracket (80) is used to detachably connect to the optical waveguide (400) and to allow the imaging lens assembly (60) to emit light toward the coupling region (401) of the optical waveguide (400) at a set coupling angle.
2. The optical waveguide testing projection pen according to claim 1, characterized in that, It also includes a polarizing element (30) and a collimating lens group (50), both of which are disposed within the housing (10); The polarizing element (30) and the collimating lens group (50) are sequentially arranged between the light source module (20) and the test chart (40) along the axial direction of the outer shell (10), and the polarizing element (30) is located between the light source module (20) and the collimating lens group (50).
3. The optical waveguide testing projection pen according to claim 1, characterized in that, The light source module (20) also includes a light-transmitting housing, and the lamp panel (220) and multiple light sources (210) are all disposed inside the light-transmitting housing.
4. The optical waveguide testing projection pen according to any one of claims 1-3, characterized in that, There are multiple mounting brackets (80), and the multiple mounting brackets (80) are respectively used to correspond to optical waveguides (400) with different shapes and / or to correspond to different set coupling angles; One of the plurality of mounting brackets (80) is connected to the housing (10).
5. The optical waveguide testing projection pen according to any one of claims 1-3, characterized in that, The mounting bracket (80) is configured to have a hook structure for attaching to the optical waveguide (400) and to make the axis of the housing (10) and the normal of the optical waveguide (400) form the set coupling angle.
6. The optical waveguide testing projection pen according to claim 5, characterized in that, The mounting bracket (80) includes: A first limiting part (801) is detachably connected to the housing (10), and the first limiting part (801) is used to face and stop the front side of the optical waveguide (400); The second limiting part (802) is connected to the first limiting part (801), and the bottom of the second limiting part (802) is used to stop the top of the optical waveguide (400); The third limiting part (803) is connected to the second limiting part (802). The third limiting part (803) is spaced apart from the first limiting part (801). The side of the third limiting part (803) facing the first limiting part (801) is used to stop the rear side of the optical waveguide (400). The first limiting part (801), the second limiting part (802) and the third limiting part (803) form the hook structure.
7. The optical waveguide testing projection pen according to any one of claims 1-3, characterized in that, There are multiple test cards (40), and each of the multiple test cards (40) has a different image; One of the multiple test charts (40) is disposed inside the housing (10).
8. The optical waveguide testing projection pen according to any one of claims 1-3, characterized in that, The outer casing (10) is configured with a slot (101); the test chart (40) is inserted into the slot (101).
9. The optical waveguide testing projection pen according to any one of claims 1-3, characterized in that, It also includes a power supply device (70), control buttons (90), a controller, and multiple drive circuits (110). The power supply device (70) is disposed inside the housing (10). The power supply device (70) is electrically connected to the multiple light sources (210) through multiple drive circuits (110) to supply power to the multiple light sources (210) respectively. The control button (90) is disposed on the housing (10), and a portion of the control button (90) is located outside the housing (10); The plurality of drive circuits (110) and the control button (90) are electrically connected to the controller, which is configured to control the conduction state of the plurality of drive circuits (110) according to the number of times the control button (90) is pressed, so as to switch the color of the light source (210) that emits light.
10. An optical waveguide testing device, characterized in that, include: The transfer stage (200), luminance and colorimeter (300), first electronic moving axis (500), second electronic moving axis (600) and optical waveguide test projection pen (100) as described in any one of claims 1-9. The transfer stage (200) is used to place the optical waveguide (400); The imaging lens group (60) of the optical waveguide test projection pen (100) is used to face the coupling region (401) of the optical waveguide (400). The first electronic moving axis (500) is connected to the optical waveguide test projection pen (100) and drives the optical waveguide test projection pen (100) to move; The imaging lens group (60) of the luminance meter (300) is oriented toward the coupling region (402) of the optical waveguide (400). The second electronic moving axis (600) is connected to the luminance and colorimeter (300) and drives the luminance and colorimeter (300) to move.