Optical lens module and wearable electronic device

Abstract

The invention provides an optical lens module, which comprises an operation element provided with a first lens unit and a second lens unit, a carrier lens barrel arranged on the image source side of the second lens unit; the image source element is arranged on the carrying lens barrel; the image processor is electrically connected with the image source element and provides image quality correction data; the detection unit is electrically connected to the image processor and is used for providing a feedback signal; when the operating element is actuated, the operating element drives the first lens unit or the second lens unit to move along the central axis, the distance between the first lens unit and the second lens unit on the central axis is changed, and the detection unit generates the feedback signal and transmits the feedback signal to the image processor. The image processor provides image quality correction data corresponding to the feedback signal to the image source element.

Description

Technical Field

[0001] The present invention relates to an optical lens module, and particularly to an optical lens module and a wearable electronic device. Background Art

[0002] At present, some wearable electronic devices are equipped with virtual reality (VR) technology to provide users with immersive image or audio-visual experiences through virtual reality technology. The core of virtual reality technology is the optical lens module, and the quality of the image displayed by the optical module will directly determine the user's image or audio-visual experience.

[0003] However, the vision differences among different users are relatively large. Some users need to wear glasses to obtain clear images, and wearing glasses and wearable electronic devices at the same time will cause a poor experience for users. Therefore, at present, in order to be applicable to various groups of people, a focal length adjustment mechanism is designed on the wearable electronic device. However, currently, when the wearable electronic device adjusts the diopter, it will cause image distortion problems, resulting in problems such as visual fatigue, discomfort, and a decrease in image quality for many users when using the wearable electronic device, thus affecting the use experience. Summary of the Invention

[0004] The purpose of the present invention is to provide an optical lens module that mainly adjusts the image while adjusting the diopter to reduce visual fatigue, discomfort, and improve image quality.

[0005] To achieve the foregoing objective, an optical lens module of the present invention has a central axis and includes: an operating element, including an annular wall surrounding the central axis and an accommodating space surrounded by the annular wall, and a first lens unit and a second lens unit are sequentially arranged from the object side to the image source side; the first lens unit includes a first lens barrel and a first lens group disposed in the first lens barrel; the second lens unit includes a second lens barrel and a second lens group disposed in the second lens barrel; a carrier lens barrel is disposed on the image source side of the second lens unit; an image source element is disposed in the carrier lens barrel; an image processor is electrically connected to the image source element and includes an image quality correction data and an image signal; and a detection unit is electrically connected to the image processor to provide a feedback signal.

[0006] When the operating element is actuated, the operating element drives the first lens unit or the second lens unit to displace along the central axis, changing the distance between the first lens unit and the second lens unit on the central axis. The detection unit generates the feedback signal and transmits it to the image processor. The image processor obtains the corresponding image quality correction data according to the feedback signal and provides the corresponding image signal to the image source element.

[0007] The efficacy of the present invention lies in that by adjusting the operating element, the distance between the first lens group and the second lens group is changed, thereby generating different diopter powers to suit users with different visual acuities. During the process of adjusting the operating element, the detection unit generates a corresponding feedback signal and transmits the feedback signal to the image processor. The image processor finds the corresponding image quality correction data according to the feedback signal and provides the corresponding image signal according to the image quality correction data. This image signal can be an anti-distortion image signal provided to the image source element. The image source element forms an image through the first lens unit and the second lens unit, and finally presents a distortion-free image. Accordingly, the present invention enables the optical lens module to achieve the myopia adjustment effect of adjusting the imaging position to suit the visual acuity differences of different users, and at the same time solves the image quality problems caused by different diopter powers of different myopic users, and has the effects of reducing visual fatigue, discomfort and improving image quality.

[0008] Optionally, the image quality correction data includes distortion correction data, field of view angle correction data, lateral chromatic aberration correction data, or relative illuminance correction data.

[0009] Preferably, the detection unit includes a toothed structure and a rotary encoder. The toothed structure is provided on the operating element and includes a plurality of first teeth. The rotary encoder has an encoder body and a rotating shaft provided on the encoder body. The rotating shaft has second teeth that directly or indirectly engage with the first teeth. When the operating element is actuated, the toothed structure drives the rotating shaft to rotate, and the encoder body detects the rotation angle of the rotating shaft to generate the corresponding feedback signal.

[0010] Preferably, the detection unit includes an impedance element and a contact probe. The impedance element is arranged on the operating element along a circumferential direction and has the same resistivity in the circumferential direction. The contact probe is fixedly arranged on the carrier lens barrel. When the operating element is actuated, the contact probe contacts the impedance element and generates the corresponding feedback signal according to the moving distance of the contact.

[0011] Preferably, the detection unit includes a distance sensor disposed on the first lens barrel or the second lens barrel for sensing the distance between the first lens barrel and the second lens barrel and generating a corresponding feedback signal according to the magnitude of the distance.

[0012] Preferably, the detection unit includes a conductor member and a sensing member. The conductor member includes a first conductor material, and the sensing member includes a second conductor material. The conductor member is disposed on the operating element, and the sensing member is disposed on the first lens barrel or the second lens barrel. The conductor member and the sensing member have an overlapping area in the radial direction, and the size of the overlapping area varies with the actuation of the operating element. The overlapping area forms a capacitance induction to generate a corresponding feedback signal.

[0013] Preferably, the detection unit includes a power supply and a resistor. The first power supply terminal of the power supply is electrically connected to the first resistor terminal of the resistor, the second power supply terminal of the power supply is electrically connected to the sensing member, and the second resistor terminal of the resistor is electrically connected to the conductor member.

[0014] Preferably, the resistor is R, the overlapping area is A, and the distance between the conductor member and the sensing member is d1, and the following relationship is satisfied: 57.31 Ω*mm < (R*A / d1) < 3276.85 Ω*mm.

[0015] Preferably, the detection unit includes a first metal sheet and a second metal sheet. The first metal sheet is fixedly disposed on the first lens barrel, and the second metal sheet is fixedly disposed on the second lens barrel and faces the first metal sheet. When the operating element is actuated, a capacitance induction is formed between the first metal sheet and the second metal sheet to generate a corresponding feedback signal.

[0016] Preferably, the detection unit includes a power supply and a resistor. The first power supply terminal of the power supply is electrically connected to the first resistor terminal of the resistor, the second power supply terminal of the power supply is electrically connected to the first metal sheet, and the second resistor terminal of the resistor is electrically connected to the second metal sheet.

[0017] Preferably, the distance between the first metal sheet and the second metal sheet is d2, the resistor is R, and the intersection area of the first metal sheet and the second metal sheet is A, and the following relationship is satisfied: 9.21 Ω / mm < (d2*R / A) < 184.34 Ω / mm.

[0018] Preferably, the detection unit includes a microstructure element and an optical reader. The microstructure element is disposed on the outer circumferential surface of the operating element and is capable of generating a plurality of rough surfaces of different patterns. The optical reader is fixedly disposed on the carrying barrel and has a reading head for reading the rough surface of the microstructure element. When the operating element is actuated, the reader reads the rough surface corresponding to the microstructure element and generates a corresponding feedback signal according to the pattern of the rough surface.

[0019] Preferably, the optical lens module further has an index cover disposed at the ocular end of the operating element. The detection unit is an optical sensor for detecting the imaging distance of the image source element passing through the lens units and generating a corresponding feedback signal according to the imaging distance.

[0020] Secondly, the present invention further provides a wearable electronic device, comprising: a body; and the above-mentioned optical lens module disposed on the body. Thereby, the wearable electronic device can achieve a myopia adjustment effect of adjusting the imaging position, so as to adapt to the vision differences of different users, and at the same time solve the image quality problems caused by different diopters of different myopic users, and has the effects of reducing visual fatigue, discomfort and improving image quality.

[0021] Preferably, the number of the optical lens modules is two. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1A is a perspective view of the first embodiment of the present invention.

[0023] Figure 1B is a top view of the first embodiment of the present invention.

[0024] Figure 1C is a sectional view of the first embodiment of the present invention.

[0025] Figure 1D is a block diagram of the first embodiment of the present invention.

[0026] Figure 2 is a top view of the second embodiment of the present invention.

[0027] Figure 3A is a side view of the third embodiment of the present invention.

[0028] Figure 3B is a top view of the third embodiment of the present invention;

[0029] Figure 3C is a sectional view of the third embodiment of the present invention.

[0030] Figure 3D is a block diagram of the third embodiment of the present invention.

[0031] Figure 3E It is a schematic diagram of the third embodiment of the present invention, showing the state where an impedance element, a contact probe, and a resistor form a series circuit.

[0032] Figure 4A It is a cross-sectional view of the fourth embodiment of the present invention.

[0033] Figure 4B It is a cross-sectional view of the fourth embodiment of the present invention, showing the state where the first lens unit and the second lens unit are close to each other.

[0034] Figure 4C It is a block diagram of the fourth embodiment of the present invention.

[0035] Figure 5A It is a cross-sectional view of the fifth embodiment of the present invention.

[0036] Figure 5B It is a cross-sectional view of the fifth embodiment of the present invention, showing the state where the first lens unit and the second lens unit are close to each other.

[0037] Figure 6A It is a cross-sectional view of the sixth embodiment of the present invention.

[0038] Figure 6B It is a perspective view of the sixth embodiment of the present invention, showing the state where the operating element is separated from the first lens barrel.

[0039] Figure 6C It is a schematic diagram of the sixth embodiment of the present invention, showing the state where the conductor member and the sensing member overlap each other.

[0040] Figure 6D It is a schematic diagram of the sixth embodiment of the present invention, showing the state where the conductor member and the sensing member overlap each other at another position.

[0041] Figure 6E It is a block diagram of the sixth embodiment of the present invention.

[0042] Figure 6F It is a schematic diagram of the sixth embodiment of the present invention, showing the state where the conductor member, the sensing member, the power supply, and the resistor form an RC series circuit.

[0043] Figure 7A It is a cross-sectional view of the seventh embodiment of the present invention.

[0044] Figure 7B It is a cross-sectional view of the seventh embodiment of the present invention, showing the state where the first lens unit and the second lens unit are close to each other.

[0045] Figure 7C It is a block diagram of the seventh embodiment of the present invention.

[0046] Figure 7DIt is a schematic diagram of the seventh embodiment of the present invention, showing the state where the first metal sheet, the second metal sheet, the power supply, and the resistor form an RC series circuit.

[0047] Figure 8A It is a perspective view of the eighth embodiment of the present invention.

[0048] Figure 8B It is a top view of the eighth embodiment of the present invention.

[0049] Figure 8C It is a block diagram of the eighth embodiment of the present invention.

[0050] Figure 9A It is a perspective view of the ninth embodiment of the present invention.

[0051] Figure 9B It is a sectional view of the ninth embodiment of the present invention.

[0052] Figure 9C It is a block diagram of the ninth embodiment of the present invention.

[0053] Figure 10 It is a schematic diagram of the tenth embodiment of the present invention, showing the three-dimensional state of the wearable electronic device.

[0054] Explanation of the reference numerals

[0055] 10... Operating element

[0056] X... Central axis

[0057] 11... Ring wall

[0058] 12... Accommodation space

[0059] 20... First lens unit

[0060] 21... First lens barrel

[0061] 22... First lens group

[0062] 30... Second lens unit

[0063] 31... Second lens barrel

[0064] 32... Second lens group

[0065] 40... Mounting lens barrel

[0066] 50... Image source element

[0067] 60... Image processor

[0068] 70, 70A, 70B, 70C, 70D, 70E, 70F... Detection unit

[0069] 71...Toothed structure

[0070] 711...First tooth part

[0071] 72...Rotary encoder

[0072] 721...Encoder body

[0073] 722...Rotating shaft

[0074] 723...Second tooth part

[0075] 73...Drive belt

[0076] 731...Third tooth part

[0077] 71A...Impedance element

[0078] 72A...Contact probe

[0079] 721A...Probe holder

[0080] 722A...Probe part

[0081] 73A...Power supply

[0082] 731A...First power supply terminal

[0083] 732A...Second power supply terminal

[0084] 71B...Distance sensor

[0085] 71C...Conductor part

[0086] 72C...Sensing part

[0087] 73C...Power supply

[0088] 731C...First power supply terminal

[0089] 732C...Second power supply terminal

[0090] 74C...Resistor

[0091] 741C...First resistor terminal

[0092] 742C...Second resistor terminal

[0093] 71D...First metal sheet

[0094] 72D...Second metal sheet

[0095] 73D...Power supply

[0096] 731D...First power supply terminal

[0097] 732D...Second power supply terminal

[0098] 74D...Resistor

[0099] 741D...First resistor terminal

[0100] 742C...Second resistor terminal

[0101] 71E...Microstructure element

[0102] 711E...Rough surface

[0103] 72E...Optical reader

[0104] 721E...Reading head

[0105] 71F...Optical sensor

[0106] 80...Indicator cover

[0107] 91...Electronic device

[0108] 92...Optical lens module

[0109] 93...Frame

[0110] 94...Controller Detailed implementation manners

[0111] Before presenting the detailed description, it should be noted that in the following description, similar element and part names are denoted by the same reference numerals.

[0112] <First Embodiment>

[0113] Refer to Figures 1A to 1D As shown, the first embodiment of the present invention provides an optical lens module having a central axis X, comprising an operating element 10, a first lens unit 20, a second lens unit 30, a mounting barrel 40, an image source element 50, an image processor 60, and a detection unit 70, wherein:

[0114] The operating element 10 includes an annular wall 11 surrounding the central axis X and an accommodation space 12 surrounded by the annular wall 11, and the first lens unit 20 and the second lens unit 30 are sequentially arranged from the object side to the image source side.

[0115] The first lens unit 20 is disposed in the accommodation space 12 of the operating element 10 and includes a first lens barrel 21 and a first lens group 22 fixedly disposed in the first lens barrel 21; in this embodiment, the first lens group 22 is exemplified by a single lens, but is not limited thereto.

[0116] The second lens unit 30 can be disposed in the accommodating space 12 of the operating element 10 so as to be reciprocally displaceable along the central axis X, and includes a second lens barrel 31 and a second lens group 32 fixedly disposed in the second lens barrel 31 and facing the first lens group 22. In this embodiment, the second lens group 32 is taken as an example of a single lens.

[0117] The carrying lens barrel 40 is disposed on the image source side of the second lens unit 30.

[0118] The image source element 50 is disposed in the carrying lens barrel 40 to provide an image light source to the first lens unit 20.

[0119] The image processor 60 is electrically connected to the image source element 50. The image processor includes an image quality correction data and an image signal. The image quality correction data includes, but is not limited to, distortion correction data, field of view angle correction data, lateral chromatic aberration correction data, or relative illumination correction data, and is used to process and optimize the image signal. The image processor 60 provides the corrected image signal to the image source element 50 through the image quality correction data.

[0120] The detection unit 70 is electrically connected to the image processor 60 to provide a feedback signal. In this embodiment, the detection unit 70 includes a toothed structure 71 and a rotary encoder 72. The toothed structure 71 is disposed on the outer circumferential surface of the operating element 10 and includes a plurality of first teeth 711. The rotary encoder 72 is disposed on the carrying lens barrel 40 and has an encoder body 721 and a rotating shaft 722 disposed on the encoder body 721. A second tooth 723 directly meshing with the first tooth 711 is disposed on the rotating shaft 722.

[0121] Thus, when the operating element 10 is actuated, the operating element 10 drives the second lens unit 30 to displace along the central axis X, changing the distance between the first lens unit 20 and the second lens unit 30 on the central axis X. However, this is not limited thereto. In another embodiment, when the operating element 10 is actuated, the operating element 10 drives the first lens unit 20 to displace along the central axis X, also changing the distance between the first lens unit 20 and the second lens unit 30 on the central axis X. Additionally, while the operating element 10 is being rotated, the toothed structure 71 provided on the operating element 10 drives the rotating shaft 722 of the rotary encoder 72 to rotate. The encoder body 721 detects the rotation angle of the rotating shaft 722 and generates the corresponding feedback signal. The detection unit 70 then transmits the generated feedback signal to the image processor 60. The image processor 60 finds the corresponding image quality correction data based on the feedback signal and provides the corresponding image signal according to the image quality correction data. This image signal can be an anti-distortion image signal provided to the image source element 50. The image light source provided by the image source element 50 is imaged through the first lens unit 20 and the second lens unit 30, and finally presents a distortion-free image.

[0122] For example, with reference to Table 1 below, it shows the image quality correction data in the image processor 60. It can be seen from Table 1 that when the user actuates the operating element 10 and rotates its rotation angle from 0 degrees to 30 degrees, its corresponding diopter changes from 0D to 3D, and its corresponding image quality correction data (distortion) changes from -27.39% to -31.81%. At this time, the image processor 60 provides the corresponding image signal to the image source element 50 according to the image quality correction data (-31.81%), so that the image light source provided by the image source element 50 passes through the first lens unit 20 and the second lens unit 30 and presents a distortion-free image. At the same time, when the present invention performs image quality correction, it pre-distorts the image signal in an equal amount in the opposite direction to the image source element 50. The image presented after the image light source provided by the image source element 50 passes through the first lens unit 20 and the second lens unit 30 will be a distortion-free image. For example, when the operating element is at 30 degrees, without passing through the present invention, the image passing through the lens unit presents pincushion distortion, and after passing through the present invention, the image signal will be corrected to barrel distortion, so that the image after passing through these lens units presents distortion-free.

[0123]

[0124] Accordingly, while adjusting the diopter, the present invention will adjust the image to solve the image quality problems caused by different myopic users due to different diopters, and has the effects of reducing visual fatigue, discomfort and improving image quality.

[0125] <Second Embodiment>

[0126] Referring to Figure 2 As shown, the optical lens module provided by the second embodiment of the present invention is different from the first embodiment in that:

[0127] The toothed structure 71 and the rotary encoder 72 included in the detection unit 70 are in indirect engagement, that is, the detection unit 70 further includes a transmission belt 73.

[0128] Wherein the toothed structure 71 is provided on the outer circumferential surface of the operating element 10 and includes a plurality of first tooth portions 711.

[0129] The rotary encoder 72 is disposed on the carrier barrel 40 and has an encoder body 721 and a rotating shaft 722 disposed on the encoder body 721. The rotating shaft 722 has a second tooth portion 723 spaced apart from the first tooth portion 711 by a distance.

[0130] The transmission belt 73 is an annular shape and has a plurality of third tooth portions 731. Some of the third tooth portions 731 are engaged with the first tooth portions 711 of the toothed structure 71, and some of the third tooth portions 731 are engaged with the second tooth portions 723 of the rotating shaft 722.

[0131] By the arrangement of the transmission belt 73, when the operating element 10 is rotated, the rotating shaft 722 can be indirectly driven to rotate, thereby constituting another implementation manner.

[0132] <Third Embodiment>

[0133] Referring to Figures 3A to 3E As shown, the optical lens module provided by the third embodiment of the present invention is different from the first embodiment in that:

[0134] The detection unit 70A includes an impedance element 71A and a contact probe 72A.

[0135] The impedance element 71A is disposed on the outer circumferential surface of the operating element 10 along a circumferential direction and has the same resistivity in the circumferential direction. In this embodiment, the impedance element 71A is a thin film plated on the outer surface of the operating element 10, and the material is stainless steel or indium tin oxide (ITO). In addition, one end of the impedance element 71A is electrically connected to a power supply 73A through a wire, that is, one end of the impedance element 71A is electrically connected to the first power supply end 731A of the power supply 73A.

[0136] AsFigure 3A As shown, the contact probe 72A is disposed on the loading barrel 40 and has a probe base 721A and a probe portion 722A that connects the probe base 721A and is in electrical contact with the impedance element 71A. The contact probe 72A is electrically connected to the second power supply terminal 732A of the power supply 73A, such that the contact probe 72A, the impedance element 71A, and the power supply 73A form a loop (as Figure 3E ).

[0137] Accordingly, with reference to Table 2 below, after the user rotates the operating element 10, in addition to driving the second lens unit 30 (or the first lens unit 20) to displace along the central axis X and changing the distance between the first lens unit 20 and the second lens unit 30 on the central axis X, while the operating element 10 is being rotated, the position where the probe portion 722A of the contact probe 72A is in electrical contact with the impedance element 71A is changed, thereby measuring different magnitudes of current I. That is, by applying a fixed voltage or a fixed current as input, the resistance value R can be calculated using the formula R = V / I, and this resistance value R is the feedback signal. The principle is based on the formula L = RA / ρ, where ρ: resistivity (Ω·m), L: resistance length (m), A: resistance cross-sectional area (m 2 ), with the material resistivity ρ and the material cross-sectional area A fixed, the resistance length L can be calculated; knowing L, the rotation angle can be calculated, and then corresponding to the diopter and distortion degree (as shown in Table 3). In Table 2, "calculating the length L between the two measurement ends" is the resistance length, which refers to the distance between the positions where the wire 73A and the probe portion 722A are in contact with the impedance element 71A. "Rotation angle θ" in Table 2 refers to the rotation angle of the operating element 10, and "corresponding diopter D" in Table 2 refers to the diopter formed by the first lens unit 20 and the second lens unit 30 after the operating element 10 is rotated.

[0138]

[0139]

[0140] For example, with reference to Table 2 and Table 3 above, the image quality correction data included in the image processor 60 is shown. It can be seen from Table 2 that when the material of the impedance element 71A is stainless steel, and the user actuates the operating element 10 and rotates its angle from 0.41 degrees to 59.54 degrees, the corresponding diopter changes from 0D to 6D, and the corresponding image quality correction data (distortion) changes from -27.39% to -32.24%. At this time, the image processor 60 provides the corresponding image signal to the image source element 50 according to the image quality correction data (-32.24%), so that the image light source provided by the image source element 50 passes through the first lens unit 20 and the second lens unit 30, presenting a non-distorted image. At the same time, when the present invention corrects the image quality, the image signal is pre-distorted in the opposite direction by the same amount to the image source element 50, and the image light source provided by the image source element 50 will show a non-distorted image after passing through the first lens unit 20 and the second lens unit 30. Similarly, when adjusting the diopter, the image will be adjusted at the same time to reduce visual fatigue, discomfort and improve image quality.

[0141] <Fourth Embodiment>

[0142] Refer to Figures 4A to 4C As shown, the optical lens module provided by the fourth embodiment of the present invention is different from the first embodiment in that:

[0143] The detection unit 70B includes a distance sensor 71B. The distance sensor 71B is provided in the first lens barrel 21 and is used to sense the distance between the first lens barrel 21 and the second lens barrel 31, and generate a corresponding feedback signal according to the size of the distance. In this embodiment, the distance sensor 71B is a ToF (Time of Flight) sensor, which emits a beam of infrared rays or lasers and measures the time for the light to be emitted and reflected back. According to the speed of light and time, the distance to the target object (the second lens barrel 31) is calculated.

[0144] Thus, when the operating element 10 is actuated, the operating element 10 drives the second lens unit 30 (or the first lens unit 20) to displace along the central axis X, changing the distance between the first lens unit 20 and the second lens unit 30 on the central axis X. At this time, the second lens barrel 31 of the second lens unit 30 will approach (or move away from) the first lens barrel 21. At the same time, the distance sensor 71B will also detect the distance between the second lens barrel 31 and the first lens barrel 21, and this distance is the feedback signal. The detection unit 70B then transmits the generated feedback signal to the image processor 60. The image processor 60 finds the corresponding image quality correction data based on the feedback signal, provides the corresponding image signal according to different image quality correction data, and gives the image signal to the image source element 50.

[0145] For example, with reference to Table 4 below, it shows the image quality correction data included in the image processor 60. It can be known from Table 4 that when the user actuates the operating element 10 and the distance between the first lens barrel 21 and the second lens barrel 31 changes from 4.389 mm to 2.756 mm, the corresponding diopter changes from 0 D to 3 D, and the corresponding image quality correction data (distortion) changes from -27.39% to -31.81%. At this time, the image processor 60 provides the corresponding image signal to the image source element 50 according to the image quality correction data (-31.81%), so that the image light source provided by the image source element 50 presents a non-distorted image after passing through the first lens unit 20 and the second lens unit 30. At the same time, when the present invention performs image quality correction, it pre-distorts the image signal in an equal amount in the opposite direction to the image source element 50, and the image displayed after the image light source provided by the image source element 50 passes through the first lens unit 20 and the second lens unit 30 will be a non-distorted image. Similarly, when adjusting the diopter, the image will be adjusted at the same time to reduce visual fatigue, discomfort and improve image quality.

[0146]

[0147] <Fifth Embodiment>

[0148] Refer to Figure 5A and Figure 5B As shown, the difference between the optical lens module provided by the fifth embodiment of the present invention and the fourth embodiment is that:

[0149] The detection unit 70B includes a distance sensor 71B. The distance sensor 71B is provided on the second lens barrel 31 and is used to sense the distance between the first lens barrel 21 and the second lens barrel 31, and generate the corresponding feedback signal according to the magnitude of the distance. Thus, another implementation manner is formed.

[0150] <Sixth Embodiment>

[0151] Refer to Figures 6A to 6F As shown, the difference between the sixth embodiment of the present invention and the first embodiment in providing an optical lens module lies in that:

[0152] The detection unit 70C includes a conductor member 71C, a sensing member 72C, a power supply 73C, and a resistor 74C.

[0153] The conductor member 71C includes a first conductor material. The conductor member 71C is disposed on the inner circumferential surface of the operating element 10 and is arranged in a triangular shape along the circumference of the operating element 10, but is not limited thereto. The sensing member 72C includes a second conductor material. The sensing member 72C is disposed on the outer surface of the first lens barrel 21 (or the second lens barrel 31). The conductor member 71C and the sensing member 72C have an overlapping area in the radial direction, and the size of the overlapping area varies with the actuation of the operating element 10. The overlapping area forms a capacitive induction to generate a corresponding feedback signal. Please refer to Figure 6E and 6F . The first power supply terminal 731C of the power supply 73C is electrically connected to the first resistor terminal 741C of the resistor 74C. The second power supply terminal 732C of the power supply 73C is electrically connected to the sensing member 72C. The second resistor terminal 742C of the resistor 74C is electrically connected to the conductor member 71C. Thus, the conductor member 71C, the sensing member 72C, the power supply 73C, and the resistor 74C form an RC series circuit.

[0154] Accordingly, with reference to Tables 5 and 6 below, after the user rotates the operating element 10, in addition to driving the second lens unit 30 to displace along the central axis X and changing the distance between the first lens unit 20 and the second lens unit 30 on the central axis X, while the operating element 10 is rotating, it changes the capacitive induction formed by the overlapping area of the conductor member 71C relative to the sensing member 72C in the radial direction, thereby measuring the current value to generate a corresponding feedback signal, that is, measuring the current of the RC series circuit formed by the conductor member 71C, the sensing member 72C, the power supply 73C, and the resistor 74C, and calculating the total impedance Z. The formula is Z = V / I. Given the resistance R, the capacitive reactance between the conductor member 71C and the sensing member 72C is calculated using the formula Given that the frequency f of the power supply 73C is 60 Hz, the capacitance value C between the conductor member 71C and the sensing member 72C is calculated using the formula C = 1 / (2πfXc). Given the distance d1 between the conductor member 71C and the sensing member 72C, the area distribution A of the conductor member 71C on the inner circumferential surface of the operating element 10 is calculated using the formula A = Cd1 / ε, where ε is the dielectric constant of air. Using the area distribution A, it can be calculated as Figure 6C or Figure 6DRegardless of where the sensing element 72C is located on the conductor element 71C, the rotation angle of the operating element 10 can be known. Given the rotation angle of the operating element 10, the corresponding diopter and distortion degree can be obtained (as shown in Table 6); in Table 5, the "rotation angle" refers to the rotation angle of the operating element 10, and the "corresponding diopter" in Table 5 refers to the diopter formed by the first lens unit 20 and the second lens unit 30 after the rotation of the operating element 10.

[0155]

[0156]

[0157] For example, referring to Table 5 and Table 6 above, the image quality correction data included in the image processor 60 is shown. It can be known from Table 5 that when the voltage of the power supply 73C is fixed at 24V, the resistance value of the resistor 74C is fixed at 91Ω, the distance between the conductor element 71C and the sensing element 72C is fixed at 0.1mm, and the user actuates the operating element 10 and rotates its angle from 0 degree to 30 degrees, the corresponding diopter changes from 0D to 3D, and the corresponding image quality correction data (distortion) changes from -27.39% to -31.81%. At this time, the image processor 60 provides the corresponding image signal to the image source element 50 according to the image quality correction data (-31.81%), so that the image light source provided by the image source element 50 passes through the first lens unit 20 and the second lens unit 30, presenting a non-distorted image. At the same time, when the present invention performs image quality correction, the image signal is pre-distorted in the opposite direction by an equal amount to the image source element 50, and the image presented after the image light source provided by the image source element 50 passes through the first lens unit 20 and the second lens unit 30 will be a non-distorted image. Similarly, when adjusting the diopter, the image will be adjusted at the same time to reduce visual fatigue and discomfort and improve the image quality.

[0158] It should be noted that in this embodiment, let the resistor 74C be R, the overlapping area be A, and the distance between the conductor element 71C and the sensing element 72C be d1, and satisfy the following relational expression: 57.31Ω*mm < (R*A / d1) < 3276.85Ω*mm. When the foregoing conditional expression is satisfied, the resolution of the detection unit 70C can be improved, providing the operating element 10 with better sensitivity and accuracy.

[0159] It is worth mentioning that the arrangement of the conductor member 71C and the sensing member 72C in the present invention is that the conductor member 71C is arranged on the rotating operating element 10, and the sensing member 72C is arranged on the stationary first lens barrel 21. In other embodiments, in addition to the interchangeable arrangement positions of the conductor member 71C and the sensing member 72C, if the second lens barrel 31 is of a fixed design structure, the sensing member 72C is arranged on the second lens barrel 31. Of course, the arrangement positions of the conductor member 71C and the sensing member 72C can also be interchanged.

[0160] <Seventh Embodiment>

[0161] Refer to Figures 7A to 7C As shown, the difference between the seventh embodiment of the present invention and the first embodiment in providing an optical lens module is that:

[0162] The detection unit 70D includes a first metal sheet 71D, a second metal sheet 72D, a power supply 73D and a resistor 74D.

[0163] The first metal sheet 71D is arranged on the first lens barrel 21. The second metal sheet 72D is fixedly arranged on the second lens barrel 31 and faces the first metal sheet 71D. When the operating element 10 is actuated, a corresponding capacitance induction is formed between the first metal sheet 71D and the second metal sheet 72D. According to the capacitance induction, a current value is measured, and a corresponding feedback signal is generated according to the current value. The first power supply terminal 731D of the power supply 73D is electrically connected to the first resistor terminal 741D of the resistor 74D, the second power supply terminal 732D of the power supply 73D is electrically connected to the first metal sheet 71D, and the second resistor terminal 742D of the resistor 74D is electrically connected to the second metal sheet 72D. So that the first metal sheet 71D, the second metal sheet 72D, the power supply 73D and the resistor 74D form an RC series circuit (as Figure 7D shown).

[0164] Accordingly, with reference to Tables 7 and 8 below, after the user rotates the operating element, the operating element 10 drives the second lens unit 30 to displace along the central axis X, changing the distance between the first lens unit 20 and the second lens unit 30 on the central axis X. At this time, the second lens barrel 31 of the second lens unit 30 approaches (or moves away from) the first lens barrel 21, thereby changing the capacitance induction between the first metal sheet 71D and the second metal sheet 72D, so as to measure the current value and generate a corresponding feedback signal, that is, measure the current of the RC series circuit formed by the first metal sheet 71D, the second metal sheet 72D, the power supply 73D and the resistor 74D and calculate the total impedance Z. The formula is Z = V / I. Given the resistance R, the capacitive reactance between the first metal sheet 71D and the second metal sheet 72D is calculated using the formula Given that the frequency f of the power supply 73D is 60 Hz, the capacitance value C between the first metal sheet 71D and the second metal sheet 72D is calculated using the formula C = 1 / (2πfXc). Given the overlapping area A between the first metal sheet 71D and the second metal sheet 72D, and ε being the dielectric constant of air, the distance d2 between the first metal sheet 71D and the second metal sheet 72D is calculated using the formula d2 = εA / C. Knowing the distance between the first metal sheet 71D and the second metal sheet 72D, the corresponding diopter and distortion degree can be found (as shown in Table 8); in Table 7, the "rotation angle" refers to the rotation angle of the operating element 10, and in Table 8, the "corresponding diopter" refers to the diopter formed by the first lens unit 2 and the second lens unit 30 after the operating element 10 rotates.

[0165]

[0166]

[0167] For example, with reference to Table 7 and Table 8 above, the image quality correction data included in the image processor 60 is shown. It can be known from Table 7 that when the voltage of the power supply 73D is fixed at 24V, the resistance value of the resistor 74D is fixed at 20Ω, and the intersection area between the first metal sheet 71D and the second metal sheet 72D is fixed at 0.5mm 2 , and when the user actuates the operating element 10 and rotates its rotation angle from 0 degrees to 60 degrees, the corresponding diopter changes from 0D to 6D, and the corresponding image quality correction data (distortion) changes from -27.39% to -32.24%. At this time, the image processor 60 provides the corresponding image signal to the image source element 50 according to the image quality correction data (-32.24%), so that the image light source provided by the image source element 50 passes through the first lens unit 20 and the second lens unit 30, presenting a non-distorted image. At the same time, when the present invention performs image quality correction, the image signal is pre-distorted in the opposite direction by the same amount to the image source element 50, and the image light source provided by the image source element 50 will display a non-distorted image after passing through the first lens unit 20 and the second lens unit 30. Similarly, when adjusting the diopter, the image will be adjusted at the same time to reduce visual fatigue, discomfort and improve image quality.

[0168] It should be noted that in this embodiment, let the distance between the first metal sheet 71D and the second metal sheet 72D be d2, the resistor 74D be R, and the intersection area between the first metal sheet 71D and the second metal sheet 72D be A, and the following relational expression is satisfied: 9.21Ω / mm < (d2*R / A) < 184.34Ω / mm. When the foregoing conditional expression is satisfied, the resolution of the detection unit 70D can be improved, providing the operating element 10 with better sensitivity and accuracy.

[0169] <Eighth Embodiment>

[0170] Refer to Figures 8A to 8C As shown, the difference between the eighth embodiment of the present invention and the first embodiment in providing an optical lens module lies in that:

[0171] The detection unit 70E includes a microstructure element 71E and a reader 72E.

[0172] The microstructure element 71E is provided on the outer circumferential surface of the operating element 10 and can generate a plurality of rough surfaces 711E of different patterns; in this embodiment, the microstructure element 71E is formed by surface treatment on the outer circumferential surface of the operating element 10. By means of the untreated part (smooth surface) and the treated part (rough surface 711E) on the operating element 10, optical scales of different codes are formed by arranging different sizes.

[0173] The optical reader 72E is fixedly provided on the carrier barrel 40 and has a reading head 721E for reading the rough surface 711E of the microstructure element 71E. The reading head 721E can be a small device (but not limited to this) with a light source and a light sensor, and maintains a certain distance and angle with the microstructure element 71E; the reading head 721E emits a light beam onto the microstructure element 71E and receives the reflected optical signal, and calculates the position or the moving distance according to the reflection energy of the light.

[0174] Accordingly, when the operating element 10 is actuated, the reading head 721E reads the rough surface 711E corresponding to the microstructure element 71E (for example, reads the reflection efficiency of the light source on the rough surface 711E) and generates a corresponding feedback signal according to the pattern of the rough surface 711E (such as the surface microstructure shape, density or material).

[0175]

[0176] For example, with reference to Table 9 above, the image quality correction data included in the image processor 60 is shown. It can be seen from Table 9 that when the user actuates the operating element 10 and rotates its angle from 0 degrees to 30 degrees, the corresponding diopter changes from 0D to 3D, and the corresponding image quality correction data (distortion) changes from -27.39% to -31.81%. At this time, the image processor 60 provides the corresponding image signal to the image source element 50 according to the image quality correction data (-31.81%), so that the image light source provided by the image source element 50 passes through the first lens unit 20 and the second lens unit 30, presenting a distortion-free image. At the same time, when the present invention corrects the image quality, it pre-distorts the image signal in an equal amount in the opposite direction to the image source element 50, and the image presented after the image light source provided by the image source element 50 passes through the first lens unit 20 and the second lens unit 30 will be a distortion-free image. Similarly, when adjusting the diopter, the image will be adjusted at the same time to reduce visual fatigue, discomfort and improve the image quality.

[0177] <Ninth Embodiment>

[0178] Refer to Figures 9A to 9C As shown, the difference between the ninth embodiment of the present invention and the first embodiment in providing an optical lens module is that:

[0179] The optical lens module further has an index cover 80, which is provided at the eye side end of the operating element 10. The detection unit 70F is an optical sensor 71F, which is used to detect the imaging distance of the image source element 50 passing through these lens units (or the focusing state of the optical sensor 71F, but not limited thereto), and generate a corresponding feedback signal according to the imaging distance (or the focusing state of the optical sensor 71F, but not limited thereto).

[0180] The optical lens module further includes an index cover 80 which is disposed at the object side end of the operating element 10. The detection unit 70F is an optical sensor 71F. In this embodiment, an auto-focus lens is taken as an example. The optical sensor 71F is disposed on the index cover 80 and can sense the change in focal length and provide the value of the focal length change through digital output or analog signal. By combining with the image processor 60 for calculation, the diopter change corresponding to the focal length change can be obtained. That is, the optical sensor 71F acquires an image and determines its clarity, then automatically adjusts the focal length to make the image most clear, and at the same time feeds back the imaging distance when the image is clear to the image processor 60. Then, the distortion degree corresponding to each diopter is obtained from the database of the image processor 60, and then a corresponding reverse distortion image signal is output from the image processor 60 to the image source element, and an undistorted image is presented after passing through these lens units, improving the viewing quality and comfort of the user.

[0181]

[0182] For example, with reference to Table 10 above, the image quality correction data in the image processor 60 is shown. It can be known from Table 10 that when the user actuates the operating element 10 and the virtual image distance measured by the detection unit 70F changes from 2500 mm to 333 mm, the corresponding diopter changes from 0 D to 3 D, and the corresponding image quality correction data (distortion) changes from -27.39% to -31.81%. At this time, the image processor 60 provides a corresponding image signal to the image source element 50 according to the image quality correction data (-31.81%), so that the image light source provided by the image source element 50 passes through the first lens unit 20 and the second lens unit 30 and presents an undistorted image. At the same time, in the present invention, when performing image quality correction, the image signal is pre-distorted in the same amount in the reverse direction to the image source element 50, and the image presented after the image light source provided by the image source element 50 passes through the first lens unit 20 and the second lens unit 30 will be an undistorted image. Similarly, the image will be adjusted while adjusting the diopter to reduce visual fatigue, discomfort and improve the image quality.

[0183] In addition, the optical lens module provided by the present invention can be applied to a head-mounted electronic device. Please refer to Figure 10 the schematic diagram of the wearable electronic device according to the tenth embodiment of the present invention shown. This wearable electronic device 91 is, for example but not limited to, a head-mounted display applying virtual reality technology. The optical lens module 92 is disposed on the frame 93. At the same time, the number of the optical lens modules 92 is two and they are electrically connected to a controller 94.

Claims

1. An optical lens module, characterized in that: It has a central axis and includes: An operating element includes a ring wall surrounding the central axis and a containing space surrounded by the ring wall, and a first lens unit and a second lens unit are arranged in sequence from the eye side to the image source side: The first lens unit includes a first lens barrel and a first lens group disposed in the first lens barrel; The second lens unit includes a second lens barrel and a second lens group disposed in the second lens barrel; a carrier lens barrel, arranged on the image source side of the second lens unit; An image source element is disposed in the carrier lens barrel; an image processor, electrically connected to the image source element, comprising image quality correction data and an image signal; and A detection unit, electrically connected to the image processor, providing a feedback signal; When the operating element is activated, the operating element drives the first lens unit or the second lens unit to move along the central axis, changing the distance between the first lens unit and the second lens unit on the central axis. The detection unit generates the feedback signal and transmits it to the image processor. The image processor obtains the corresponding image quality correction data according to the feedback signal and provides the corresponding image signal to the image source element.

2. The optical lens module according to claim 1, characterized in that: The image quality correction data includes distortion correction data, field angle correction data, lateral chromatic aberration correction data, or relative illumination correction data.

3. The optical lens module according to claim 1, characterized in that: The detection unit includes a tooth structure and a rotary encoder. The tooth structure is arranged on the operating element and includes a plurality of first teeth. The rotary encoder has an encoder body and a rotating shaft arranged on the encoder body. The rotating shaft has a second tooth portion that directly or indirectly meshes with the first tooth portion. When the operating element is actuated, the tooth structure drives the rotating shaft to rotate, and the encoder body detects the rotation angle of the rotating shaft and generates the corresponding feedback signal.

4. The optical lens module according to claim 1, characterized in that: The detection unit includes an impedance element and a contact probe. The impedance element is arranged on the operating element along a circumferential direction and has the same resistivity in the circumferential direction. The contact probe is fixed on the carrier lens barrel. When the operating element is actuated, the contact probe will contact the impedance element and generate the corresponding feedback signal according to the contact movement distance.

5. The optical lens module according to claim 1, characterized in that: The detection unit includes a distance sensor, which is arranged on the first lens barrel or the second lens barrel and is used to sense the distance between the first lens barrel and the second lens barrel, and generates the corresponding feedback signal according to the size of the distance.

6. The optical lens module according to claim 1, characterized in that: The detection unit includes a conductor and a sensor. The conductor includes a first conductor material, and the sensor includes a second conductor material. The conductor is disposed on the operating element, and the sensor is disposed on the first lens barrel or the second lens barrel. The conductor and the sensor have an overlapping area in the radial direction. The size of the overlapping area varies with the actuation of the operating element. The overlapping area forms a capacitive induction to generate the corresponding feedback signal.

7. The optical lens module according to claim 6, characterized in that: The detection unit includes a power source and a resistor, wherein a first power source end of the power source is electrically connected to a first resistor end of the resistor, a second power source end of the power source is electrically connected to the sensing element, and a second resistor end of the resistor is electrically connected to the conductor.

8. The optical lens module according to claim 7, characterized in that: The resistance is R, the overlap area is A, and the distance between the conductor and the sensor is d1, and the following relationship is satisfied: 57.31Ω*mm<(R*A / d1)<3276.85Ω*mm.

9. The optical lens module according to claim 1, characterized in that: The detection unit includes a first metal sheet and a second metal sheet. The first metal sheet is fixed on the first lens barrel, and the second metal sheet is fixed on the second lens barrel and faces the first metal sheet. When the operating element is actuated, a capacitive induction is formed between the first metal sheet and the second metal sheet to generate the corresponding feedback signal.

10. The optical lens module according to claim 9, characterized in that: The detection unit includes a power source and a resistor, wherein a first power source end of the power source is electrically connected to a first resistor end of the resistor, a second power source end of the power source is electrically connected to the first metal sheet, and a second resistor end of the resistor is electrically connected to the second metal sheet.

11. The optical lens module according to claim 10, characterized in that: The distance between the first metal sheet and the second metal sheet is d2, the resistance is R, the intersection area of ​​the first metal sheet and the second metal sheet is A, and the following relationship is satisfied: 9.21Ω / mm<(d2*R / A)<184.34Ω / mm.

12. The optical lens module according to claim 1, characterized in that: The detection unit includes a microstructure element and an optical reader. The microstructure element is arranged on the outer ring surface of the operating element and can produce a plurality of rough surfaces of different types. The optical reader is fixed on the carrier barrel and has a reading head for reading the rough surface of the microstructure element. When the operating element is actuated, the reader reads the rough surface corresponding to the microstructure element and generates the corresponding feedback signal according to the type of the rough surface.

13. The optical lens module according to claim 1, characterized in that: The optical lens module also has an indicator cover, which is arranged at the end of the eye side of the operating element. The detection unit is an optical sensor for detecting the imaging distance of the image source element through the lens units and generating the corresponding feedback signal according to the imaging distance.

14. A wearable electronic device, characterized in that: Include: a frame; and An optical lens module as described in any one of claims 1 to 13, arranged on the frame.

Images