CN217116267U

CN217116267U - Optical parameter detection device of near-to-eye imaging equipment

Info

Publication number: CN217116267U
Application number: CN202221582633.4U
Authority: CN
Inventors: 邓忠光; 刘璐宁; 郑增强; 冯晓帆
Original assignee: Wuhan Jingce Electronic Group Co Ltd; Wuhan Jingli Electronic Technology Co Ltd
Current assignee: Wuhan Jingce Electronic Group Co Ltd; Wuhan Jingli Electronic Technology Co Ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-08-02
Anticipated expiration: 2032-06-23

Abstract

The utility model relates to the technical field of optical image measuring devices, which discloses an optical parameter detection device of near-to-eye imaging equipment, comprising a first adjusting mechanism and a second adjusting mechanism, wherein the near-to-eye imaging equipment to be detected is placed on the first adjusting mechanism and is used for carrying out displacement adjustment on at least one degree of freedom of the near-to-eye imaging equipment to be detected; the second adjusting mechanism is provided with a detection device for displacement adjustment of the detection device on at least two degrees of freedom different from the degree of freedom of movement of the first adjusting mechanism; and still be equipped with first spirit level and second spirit level, be used for detecting respectively and wait to examine the levelness of examining near-to-eye imaging equipment and check out test set to make the two adjust well, make things convenient for check out test set to examine the optical parameter of examining near-to-eye imaging equipment and test. The optical parameter detection device of the near-eye imaging equipment in the application has the advantages of simple overall structure and convenience in operation, and can realize comprehensive detection of the eye box, the eyepoint and the spectral parameters of the near-eye imaging equipment to be detected.

Description

Optical parameter detection device of near-to-eye imaging equipment

Technical Field

The utility model relates to an optical image measuring device field, concretely relates to optical parameter detection device of near-to-eye imaging equipment.

Background

In modern society, the development of near-eye imaging technology is more and more perfect, and various near-eye imaging devices are more and more, such as various intelligent devices like AR, VR, MR, etc., HUD devices in driving tools, etc. Due to the fact that the application field of the near-eye display device is wider and deeper, and the characteristics of the near-eye image display device, namely the image receiving ends of the near-eye image display device are mainly human eyes, testing of various optical performances of the near-eye imaging device is more and more important.

In the process of testing the optical performance of the near-eye imaging device, measurement on an eye box, an eye point, a spectral path and the like is particularly important, and at present, a testing algorithm related to the eye box, the eye point and the spectral path is still in a development and testing stage, and a corresponding testing device and the like are also in a research and development state.

SUMMERY OF THE UTILITY MODEL

To prior art in the above defect or improve in the demand one or more, the utility model provides a near-to-eye imaging device's optical parameter detection device for optical parameter to near-to-eye imaging device detects.

In order to achieve the above object, the present invention provides an optical parameter detecting device for a near-eye imaging apparatus, including:

the first adjusting mechanism is provided with near-eye imaging equipment to be detected and can drive the near-eye imaging equipment to be detected to perform displacement adjustment on at least one degree of freedom;

the second adjusting mechanism is provided with detection equipment and can drive the detection equipment to perform displacement adjustment on at least two degrees of freedom different from the degrees of freedom of the first adjusting mechanism;

the first adjusting mechanism is provided with a first level meter, and the first level meter is used for testing the levelness of the near-eye imaging equipment to be detected;

and a second level meter is arranged on the second adjusting mechanism and used for testing the levelness of the detection equipment, and the measurement sensitive directions of the first level meter and the second level meter are the same.

As a further improvement, the check out test set is optical measurement equipment, optical measurement equipment's diaphragm is leading, is used for detecting wait to examine the eye box of examining near-to-eye imaging equipment.

As a further improvement, the optical measurement device comprises a photosensitive assembly and a lens assembly, and the entrance pupil center of the lens assembly is just right to be examined near-to-eye imaging device setting.

As a further improvement, the last laser range finder that still is equipped with of optical measurement equipment, laser range finder is used for the test wait to examine near-to-eye imaging equipment with optical measurement equipment's distance.

As a further improvement, the check out test set is the spectrum appearance, the check out test set is used for detecting wait to examine the spectral parameter of near-to-eye imaging equipment.

As a further improvement, first adjustment mechanism includes the fixing base, be equipped with six attitude control platforms on the fixing base, six attitude control platform tops are equipped with first spirit level with wait to examine near-to-eye imaging equipment.

As a further improvement of the present invention, the second adjusting mechanism includes a six-axis table, the six-axis table top is provided with the second level meter and the detecting device.

As a further improvement, the six-shaft type bench top still is equipped with sectional fixture, check out test set demountable installation be in sectional fixture is last.

As a further improvement, the second adjusting mechanism comprises six manipulators, one end of the six manipulators is fixed on the horizontal plane, and the other ends of the six manipulators are connected with the detection equipment.

As a further improvement of the utility model, the utility model also comprises a base, the first adjusting mechanism and the second adjusting mechanism are all connected on the base.

The above-described improved technical features may be combined with each other as long as they do not conflict with each other.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:

(1) the utility model discloses an optical parameter detection device of near-to-eye imaging equipment, it is through setting up at least one degree of freedom on first adjustment mechanism and second adjustment mechanism respectively for the near-to-eye imaging equipment of waiting to examine can adjust its levelness through first adjustment mechanism, and detection equipment can adjust its levelness through second adjustment mechanism; the measurement sensitive directions of the first level meter and the second level meter are the same, so that the alignment of the near-eye imaging equipment to be detected and the detection equipment can be realized while the levelness of the near-eye imaging equipment to be detected and the detection equipment is adjusted, and the detection of optical parameters is facilitated; and the cooperation of first adjustment mechanism and second adjustment mechanism can realize waiting to examine near-to-eye imaging equipment and check out test set's regulation on three different degrees of freedom, realizes the relative movement of the two on three-dimensional space, and then accessible check out test set obtains waiting to examine the optical parameter of near-to-eye imaging equipment, and the whole device setting form is comparatively simple, can realize waiting to examine near-to-eye imaging equipment and check out test set's levelness and aim at and optical parameter detection demand well.

(2) The utility model discloses an optical parameter detection device of near-to-eye imaging equipment, it is through setting up six shaft type platforms, make optical measurement equipment examine time measuring at the eye box of treating examining near-to-eye imaging equipment, this optical measurement equipment's motion trail is adjustable controllable, carry out the perception to waiting to examine image definition and luminance etc. of near-to-eye imaging equipment's imaging area through optical measurement equipment, the eye box regional boundary of waiting to examine near-to-eye imaging equipment is obtained, and calculate the eye box data of waiting to examine near-to-eye imaging equipment through six shaft type platform motion trails.

(3) The utility model discloses an optical parameter detection device of near-to-eye imaging device, it is through setting up six manipulators, utilizes six manipulators to drive the spectrum appearance and removes in eye box within range, and the accessible spectrum appearance acquires the spectral parameter of waiting to examine near-to-eye imaging device eye box within range different positions department, and then obtains this homogeneity of waiting to examine spectral parameter in the near-to-eye imaging device eye box.

(4) The utility model discloses an optical parameter detection device of near-to-eye imaging equipment, it is through waiting to examine near-to-eye imaging equipment and optical measurement equipment or spectrum appearance integrated setting, utilize first spirit level and second spirit level to examine near-to-eye imaging equipment and check out test set's horizontal position at first for the two is adjusted well and is set up, the displacement of rethread six-axis formula platform adjustment optical measurement equipment, utilize the eye box region of waiting to examine near-to-eye imaging equipment of optical measurement equipment perception, rethread eye box region calculates obtains its eyepoint position; simultaneously the accessible is changed the check out test set for the spectrum appearance through the eye box region that obtains behind the eyepoint position to utilize six robots to drive the spectrum appearance and move in this eye box region, then obtain this spectral performance parameter of waiting to examine near-to-eye imaging device in the eye box region.

Drawings

Fig. 1 is a schematic structural diagram of an optical parameter detection apparatus of a near-eye imaging device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an optical parameter detection apparatus of a near-eye imaging device according to an embodiment of the present invention.

In all the figures, the same reference numerals denote the same features, in particular:

1. a base; 2. a fixed seat; 3. a six-axis attitude adjusting table; 4. a first level; 5. a near-eye imaging device to be detected; 6. an entrance pupil center; 7. a second level; 8. a lens assembly; 9. a photosensitive assembly; 10. a laser range finder; 11. a six-axis table; 12. installing a clamp; 13. a spectrometer; 14. six-axis manipulator.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example (b):

the utility model discloses optical parameter detection device of near-to-eye imaging apparatus in preferred embodiment, as shown in fig. 1, fig. 2, including first adjustment mechanism and second adjustment mechanism, wherein place on the first adjustment mechanism and wait to examine near-to-eye imaging apparatus 5, and this first adjustment mechanism can drive should wait to examine near-to-eye imaging apparatus 5 and carry out the displacement on at least one degree of freedom to still be equipped with first spirit level 4 on this first adjustment mechanism, this first spirit level 4 mainly used test is waited the levelness of near-to-eye imaging apparatus 5. The second adjusting mechanism is provided with a detection device, the second adjusting mechanism can drive the detection device to perform displacement adjustment on at least two degrees of freedom different from the degree of freedom of motion of the first adjusting mechanism, the second adjusting mechanism is provided with a second level meter 7, and the second level meter 7 is mainly used for adjusting the levelness of the detection device. And the sensitive direction of measurement that first spirit level 4 and second spirit level 7 set up is the same for the levelness of examining near-to-eye imaging device 5 and check out test set that first spirit level 4 and second spirit level 7 detected can be compared, and then through adjusting first adjustment mechanism and second adjustment mechanism in order to reach the purpose that the two was adjusted well, then realize examining the purpose that the optical parameter of near-to-eye imaging device 5 was examined through adjusting first adjustment mechanism or second adjustment mechanism.

Specifically, the same measurement sensitivity directions of the first level 4 and the second level 7 refer to the same X-axis direction and the same Y-axis direction of the measurement directions of the first level 4 and the second level 7 in the same world coordinate system.

When detecting the optical parameters of the near-eye imaging device 5 to be detected, the eye box is a three-dimensional space region where the user sees the entire virtual image without moving the head or performing other adjustments, and the three-dimensional space region is a three-dimensional region, and in order to obtain the data of the eye box, it is necessary to ensure that the detection device can move in the eye box region to obtain a boundary region of the eye box, and the like, so as to obtain specific data of the eye box, that is, the movement capability in the three-dimensional space between the near-eye imaging device 5 to be detected and the detection device is required to be provided. The imaging device 5 and the detection device need to be horizontally calibrated by a level meter, so that the imaging device 5 needs to be displaced in at least one degree of freedom to realize the alignment of the two, and the detection device can realize the relative movement of the two in a three-dimensional area by the displacement in the other two degrees of freedom perpendicular to the degree of freedom to obtain the specific data of the eye box, so that the eye spot data can be further obtained after the eye box data is obtained, and the spectral data can also be obtained by measurement and calculation in the eye box area.

Preferably, the near-eye imaging device 5 to be examined in the present application is mainly AR glasses or VR glasses, and may also be a wearable device the same as or similar to the AR or VR glasses.

Preferably, in order to adjust the near-eye imaging apparatus 5 and the detection apparatus to be inspected in the present application, the position adjustment of the first adjusting mechanism and the second adjusting mechanism in the present application may not be limited to one degree of freedom or two degrees of freedom, and both may be set to be adjustable at any position and angle in space. Preferably, the first adjustment mechanism is adjustable in a vertical direction and in a direction towards or away from the detection device, and the second adjustment mechanism is provided with adjustments in three directions XYZ to facilitate detection of the optical parameter.

Further, as the preferred embodiment of the present invention, the inspection equipment in the present application is an optical measurement equipment, which is mainly used for inspecting the eye box of the near-eye imaging device 5, and the eyepoint is mainly calculated according to the area of the eye box. Specifically, the optical measurement device is mainly a type of optical measurement device with a front diaphragm, a large viewing angle, infinite focusing and a large depth of field, and is mainly used for detecting optical parameters of a near-eye device.

Preferably, the optical measurement device in this application includes a photosensitive component 9 and a lens component 8, wherein the entrance pupil center 6 of the lens component 8 is disposed toward the near-eye imaging device 5 to be inspected, and the photosensitive component 9 is disposed on a side of the lens component 8 departing from the near-eye imaging device 5 to be inspected.

Further, when the detection apparatus is an optical measurement apparatus, in order to obtain the eye box data of the near-eye imaging apparatus 5 to be inspected by the optical measurement apparatus, the distance between the optical measurement apparatus and the near-eye imaging apparatus 5 to be inspected needs to be obtained. Therefore, the optical measuring device is also provided with a laser range finder 10, the laser range finder 10 and the optical measuring device are kept still, after the distance between the laser range finder 10 and the near-eye imaging device 5 to be detected is measured, the distance between the laser range finder 10 and the entrance pupil center 6 on the optical measuring device is subtracted, and then the distance between the near-eye imaging device 5 to be detected and the entrance pupil center 6 on the optical measuring device can be obtained for calculating eye box data.

Further, as the utility model discloses an optional embodiment, check out test set in this application is spectrum appearance 13, and this spectrum appearance 13 mainly used detects the spectral parameter of waiting to examine near-to-eye imaging device 5. Specifically, the spectrometer 13 is mainly used for detecting spectral data in the eye box of the near-eye imaging device 5 to be detected. Therefore, the near-eye imaging device needs to acquire the eye box and eye point data of the near-eye imaging device 5 to be detected through the optical measurement device, then replace the optical measurement device with the spectrometer 13, and detect the spectral data in the eye box through the spectrometer 13.

Further, as a preferred embodiment of the present invention, since the optical measurement device and the spectrometer 13 themselves obtain different data, and the measurement modes of the two devices are different, the setting forms of the corresponding second adjustment mechanisms are different.

Specifically, when the detection apparatus is an optical measurement apparatus, the second adjustment mechanism includes a six-axis table 11, the top of the six-axis table 11 is a horizontal plane, and the optical measurement apparatus and the second level 7 are both disposed on the top of the six-axis table 11. Preferably, during the process of determining the eye box, the second adjusting mechanism is required to drive the optical measuring device to move in a three-dimensional space. For this reason, in order to ensure the stability of the movement of the optical measuring apparatus, a mounting jig 12 is provided on the top of the six-axis table 11, the mounting jig 12 is fixedly provided on the top of the six-axis table 11, and the optical measuring apparatus is detachably provided on the mounting jig 12.

Further, the six-axis table 11 includes an upper end surface and a lower end surface, six telescopic electric cylinders are arranged between the two end surfaces, and the six telescopic electric cylinders can drive the top surface of the six-axis table 11 to move in six degrees of freedom of the space, so as to drive the optical measurement device arranged on the six-axis table 11 to move in the space, so as to obtain eye box data of the near-eye imaging device 5 to be detected.

Further, when the detection device is a spectrometer 13, the second adjusting mechanism comprises a six-axis manipulator 14, one end of the six-axis manipulator 14 is fixed on the horizontal plane, the other end of the six-axis manipulator is connected with the tail of the spectrometer 13, and the six-axis manipulator 14 can drive the spectrometer 13 to move in space through pre-programmed setting so as to test the spectral data of the near-eye imaging device 5 to be detected in the eye box area.

Further, as the preferred embodiment of the utility model discloses a first adjustment mechanism in this application mainly includes fixing base 2, is equipped with six gesture adjustment platforms 3 on fixing base 2, and the top of these six gesture adjustment platforms 3 is provided with first spirit level 4 and waits to examine near-to-eye imaging device 5. The fixing base 2 is mainly used for adjusting the vertical height of the near-eye imaging device 5 to be detected, so that after the near-eye imaging device 5 to be detected is placed on the six-axis posture adjusting table 3, the horizontal height of the near-eye imaging device is equivalent to that of the optical measurement device, and the fast alignment of the near-eye imaging device 5 to be detected and the optical measurement device can be realized after the six-axis posture adjusting table 3 is adjusted conveniently.

Further, as the preferred embodiment of the present invention, the optical parameter detecting device of the near-eye imaging device in the present application further includes a base 1, and the first adjusting mechanism and the second adjusting mechanism are all disposed on the base 1. When the optical parameters of the near-eye imaging device 5 to be detected are detected, the alignment of the near-eye imaging device 5 to be detected and the detection device and the accuracy of displacement in the detection process have higher requirements, so that the bottoms of the first adjusting mechanism and the second adjusting mechanism are fixed and the first adjusting mechanism and the second adjusting mechanism are positioned at a horizontal plane, so that the adjustment of the near-eye imaging device 5 to be detected and the detection device is facilitated. Therefore, the base 1 is arranged at the bottom of the first adjusting mechanism and the bottom of the second adjusting mechanism, so that the first adjusting mechanism and the second adjusting mechanism can be detachably connected to the base 1, and detection of optical parameters, carrying of the whole equipment and the like are facilitated.

The working process of the optical parameter detection device of the near-eye imaging device in the application is as follows: when an eye box of a near-eye imaging device 5 to be detected is required to be detected, the near-eye imaging device 5 to be detected is firstly placed on the six-axis posture adjusting table 3 and fixed, then the levelness of the near-eye imaging device 5 to be detected is detected through the first gradienter 4, and then the six-axis posture adjusting table 3 is utilized for adjustment, so that the near-eye imaging device 5 to be detected is in a horizontal state; placing the optical measurement equipment on a mounting fixture 12, enabling the optical measurement equipment to be relatively fixed with a six-axis table 11, detecting the levelness of the optical measurement equipment through a second level meter 7, adjusting the levelness and the position of the optical measurement equipment by using the six-axis table 11, and enabling the optical measurement equipment to be aligned with the near-eye imaging equipment 5 to be detected; adjusting the position of the optical measurement equipment and detecting the range of an eye box of the near-eye imaging equipment 5 to be detected to obtain the eye box of the near-eye imaging equipment 5 to be detected, and obtaining the eye point position of the near-eye imaging equipment 5 to be detected according to the eye box of the near-eye imaging equipment 5 to be detected; the optical measurement device and the six-axis table 11 are replaced by the six-axis manipulator 14 and the spectrometer 13, and the spectrometer 13 is driven by the six-axis manipulator 14 to detect the spectral data of the near-eye imaging device 5 to be detected in the range of the eye box.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims

1. An optical parameter detection apparatus for a near-eye imaging device, comprising:

the second adjusting mechanism is provided with detection equipment and can drive the detection equipment to perform displacement adjustment on at least two degrees of freedom different from the degree of freedom of movement of the first adjusting mechanism;

2. The optical parameter detection device of a near-eye imaging apparatus according to claim 1, wherein the detection apparatus is an optical measurement apparatus, and a diaphragm of the optical measurement apparatus is arranged in front for detecting an eye box of the near-eye imaging apparatus to be detected.

3. The optical parameter detection device for near-eye imaging equipment according to claim 2, wherein the optical measurement equipment comprises a photosensitive component and a lens component, and the center of the entrance pupil of the lens component is arranged opposite to the near-eye imaging equipment to be detected.

4. The optical parameter detection device for the near-eye imaging apparatus according to claim 2, wherein a laser range finder is further disposed on the optical measurement apparatus, and the laser range finder is used for testing the distance between the near-eye imaging apparatus to be detected and the optical measurement apparatus.

5. The apparatus of claim 1, wherein the detection device is a spectrometer, and the detection device is configured to detect spectral parameters of the near-eye imaging device to be detected.

6. The optical parameter detection device for near-eye imaging equipment according to claim 1, wherein the first adjusting mechanism comprises a fixed base, a six-axis attitude adjusting table is arranged on the fixed base, and the first level and the near-eye imaging equipment to be detected are arranged above the six-axis attitude adjusting table.

7. The optical parameter detection apparatus for a near-eye imaging device according to any one of claims 1 to 4, wherein the second adjustment mechanism comprises a six-axis stage above which the second level and the detection device are disposed.

8. The optical parameter detection device of the near-eye imaging apparatus according to claim 7, wherein a mounting fixture is further disposed above the six-axis stage, and the detection apparatus is detachably mounted on the mounting fixture.

9. The optical parameter detection device for a near-eye imaging apparatus according to claim 1 or 5, wherein the second adjustment mechanism comprises a six-axis manipulator, one end of the six-axis manipulator is fixed on a horizontal plane, and the other end of the six-axis manipulator is connected with the detection apparatus.

10. The apparatus for detecting optical parameters of a near-eye imaging device according to any one of claims 1-6, further comprising a base, wherein the first adjusting mechanism and the second adjusting mechanism are both connected to the base.