CN114326121B - Pupil distance diopter push-pull rotation adjusting mechanism - Google Patents
Pupil distance diopter push-pull rotation adjusting mechanism Download PDFInfo
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- CN114326121B CN114326121B CN202111599222.6A CN202111599222A CN114326121B CN 114326121 B CN114326121 B CN 114326121B CN 202111599222 A CN202111599222 A CN 202111599222A CN 114326121 B CN114326121 B CN 114326121B
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- 230000033001 locomotion Effects 0.000 claims abstract description 76
- 230000003287 optical effect Effects 0.000 claims abstract description 29
- 239000011521 glass Substances 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 4
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- 230000004048 modification Effects 0.000 description 2
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Abstract
The invention relates to a pupil distance diopter push-pull rotary adjusting mechanism, which comprises two adjusting components, wherein the adjusting components comprise a left-right moving unit for driving an optical machine component to move left and right, a left-right guiding unit for guiding the optical machine component to move left and right, a front-back moving unit for driving the diopter adjusting component to move back and forth, a front-back guiding unit arranged on the optical machine component for guiding the diopter adjusting component to move back and forth, and a push-pull driving component; the back-and-forth movement unit is connected with the diopter adjusting component in a left-and-right sliding way through a left-and-right sliding component; the push-pull driving assembly comprises a left output unit and a right output unit which drive the left motion unit and the right motion unit to work, a front output unit and a rear output unit which drive the front motion unit and the rear motion unit to work, an adjusting input unit and a push-pull clutch unit which carries out input-output clutch adjustment; the purpose of accurately controlling the monocular adjusting value can be simply and conveniently realized by carrying out distribution adjustment through the two adjusting components.
Description
Technical Field
The invention relates to the technical field of pupil distance diopter adjustment, in particular to a pupil distance diopter push-pull rotation adjustment mechanism.
Background
The diopter and interpupillary distance adjustment of the intelligent glasses on the market mainly comprises the following modes: ① An internal cam and a thread are adopted, and an external manual roller is used for adjustment; ② Sliding adjustment is performed through an external toggle key; ③ The binocular simultaneous adjustment is realized through a gear train, and the external manual roller is adjusted; when diopter and interpupillary distance are adjusted, the single-eye adjusting value can not be accurately controlled only through direct pushing and direct sliding double-eye linkage adjustment.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the pupil distance diopter push-pull rotation adjusting mechanism aiming at the defects in the prior art.
The technical scheme adopted for solving the technical problems is as follows:
The pupil distance diopter push-pull rotary adjusting mechanism is constructed and comprises two adjusting components, wherein the adjusting components comprise a left-right moving unit for driving an optical machine component to move left and right, a left-right guiding unit for guiding the optical machine component to move left and right, a front-back moving unit for driving the diopter adjusting component to move back and forth, a front-back guiding unit arranged on the optical machine component for guiding the diopter adjusting component to move back and forth, and a push-pull driving component; the back-and-forth movement unit is connected with the diopter adjusting component in a left-and-right sliding way through a left-and-right sliding component; the push-pull driving assembly comprises a left output unit and a right output unit which drive the left motion unit and the right motion unit to work, a front output unit and a rear output unit which drive the front motion unit and the rear motion unit to work, an adjusting input unit and a push-pull clutch unit for carrying out input-output clutch adjustment.
The invention relates to a pupil distance diopter push-pull rotation adjusting mechanism, wherein a push-pull clutch unit comprises a rotation driving piece and a push-pull main shaft connected with the rotation driving piece; the push-pull main shaft is connected with the adjusting input unit and driven to move by the adjusting input unit.
The invention relates to a pupil distance diopter push-pull rotary adjusting mechanism, wherein the left and right output units comprise left and right driving gears, the left and right driving gears are provided with first through holes for the push-pull main shafts to pass through, and one side surfaces of the left and right driving gears are provided with first grooves matched with a rotary driving piece; the outer side surface of the rotary driving piece is provided with a rotary driving piece salient point, and the inner wall of the first groove is provided with a first annular key groove matched with the rotary driving piece salient point; the inner diameter of the first groove is larger than that of the first through hole.
The invention discloses a pupil distance diopter push-pull rotary adjusting mechanism, wherein a front output unit and a rear output unit comprise diopter adjusting wheels, one side surface of each diopter adjusting wheel is provided with a second groove matched with a rotary driving piece, and the inner wall of each second groove is provided with a second annular key groove matched with the rotary driving piece in a protruding point mode.
The invention relates to a pupil distance diopter push-pull rotation adjusting mechanism, wherein the front and rear output units further comprise front and rear driving gears which are coaxially fixed with diopter adjusting wheels; the front-back movement unit comprises a front-back movement screw rod and a front-back movement thread block matched with the front-back movement screw rod; and a transmission bevel gear meshed with the front and rear driving gears is coaxially arranged on the front and rear movement screw rod.
The invention discloses a pupil distance diopter push-pull rotation adjusting mechanism, wherein a left sliding component and a right sliding component comprise sliding seats fixedly connected with the diopter adjusting component, and the sliding seats are provided with sliding components which are connected with a front-back movement threaded block in a left-right sliding mode.
The invention relates to a pupil distance diopter push-pull rotation adjusting mechanism, wherein a left-right movement unit comprises a left-right movement screw rod and a left-right movement thread block matched with the left-right movement screw rod; the left-right movement thread block is fixedly arranged on the optical machine component; the left and right movement screw is coaxially provided with a left and right movement gear, and further comprises a left and right movement pinion meshed with the left and right movement gear, and the left and right movement pinion is meshed with the left and right driving gear.
The invention relates to a pupil distance diopter push-pull rotation adjusting mechanism, which further comprises a left and right adjusting bracket for installing a left and right output unit and a front and rear adjusting bracket for installing a front and rear output unit;
The left and right adjusting brackets are provided with mounting plates, the left and right driving gears are coaxially connected with connecting seats, and the first through holes are formed in the connecting seats; the mounting plate is provided with a second through hole matched with the connecting seat; the driving gear connecting piece is connected with the connecting seat, and an annular boss matched with the second through hole is arranged on the surface of one side of the driving gear connecting piece facing the connecting seat; the driving gear connecting piece is provided with a third through hole for the push-pull main shaft to pass through.
The invention relates to a pupil distance diopter push-pull rotation adjusting mechanism, wherein an adjusting input unit comprises an adjusting knob and a movable shaft which are connected; the movable shaft is fixedly connected with the push-pull main shaft; the glasses main body shell is provided with a fourth through hole for the movable shaft to pass through, and the outer side surface of the movable shaft is coaxially provided with a first annular groove and a second annular groove side by side; one or more elastic beads are arranged on the inner wall of the fourth through hole; the front end of the movable shaft is provided with an accommodating groove for accommodating the driving gear connecting piece; the mounting plate is provided with a positioning groove matched with the front end of the movable shaft.
The invention relates to a pupil distance diopter push-pull rotation adjusting mechanism, wherein a left guide unit and a right guide unit comprise a left guide sleeve and a right guide sleeve which are fixedly arranged on an optical machine assembly and a left guide shaft and a right guide shaft which are arranged on an optical machine bracket and matched with the left guide sleeve and the right guide sleeve; the front and rear guide unit comprises a front and rear guide shaft arranged on the diopter adjusting component and a front and rear guide sleeve fixedly arranged on the optical machine component and matched with the front and rear guide shaft.
The invention has the beneficial effects that: the push-pull operation of the push-pull clutch unit is used for switching and adjusting the input unit to be matched with the left-right output unit or matched with the front-back output unit, when the push-pull clutch unit is matched with the left-right output unit, the rotary motion of the input unit is used for driving the left-right motion unit to work, the optical machine component is driven to move left and right under the guiding action of the left-right guiding unit to finish the adjustment of the interpupillary distance, at the moment, the diopter adjusting component moves left and right along with the optical machine component under the action of the front-back guiding unit and the left-right sliding component, when the diopter adjusting component is matched with the front-back output unit, the rotary motion of the input unit is used for driving the front-back motion unit to work, the diopter adjusting component is driven to move back and forth under the guiding action of the front-back guiding unit, and the diopter adjusting components are distributed and adjusted, and the purpose of accurately controlling the monocular adjusting value can be achieved simply and conveniently.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, in which the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained by those skilled in the art without inventive effort:
FIG. 1 is an overall view of a preferred embodiment of the pupil distance diopter push-pull rotation adjustment mechanism of the present invention;
FIG. 2 is another angular overview of the pupil distance diopter push-pull rotation adjustment mechanism of the preferred embodiment of the present invention;
FIG. 3 is a schematic illustration of the adjustment of the pupil distance diopter push-pull rotation adjustment mechanism according to the preferred embodiment of the present invention;
FIG. 4 is an exploded view of the adjustment assembly of the pupil distance diopter push-pull rotation adjustment mechanism of the preferred embodiment of the present invention;
FIG. 5 is a cross-sectional view showing the diopter adjustment state of the pupil distance diopter push-pull rotation adjustment mechanism of the preferred embodiment of this invention;
FIG. 6 is a sectional view showing the pupil distance adjusting state of the pupil distance diopter push-pull rotary adjusting mechanism according to the preferred embodiment of the present invention;
FIG. 7 is an exploded view of the right and left drive gears, front and rear drive gears and rotary drive member of the pupil distance diopter push-pull rotary adjustment mechanism of the preferred embodiment of the present invention;
Fig. 8 is an enlarged schematic view of the diopter adjustment wheel of the pupil distance diopter push-pull rotation adjustment mechanism of the preferred embodiment of this invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
The pupil distance diopter push-pull rotation adjusting mechanism of the preferred embodiment of the invention is shown in fig. 1, and simultaneously referring to fig. 2-8, and comprises two adjusting components, wherein the adjusting components comprise a left-right moving unit 2 for driving the optical machine component 1 to move left and right, a left-right guiding unit 3 for guiding the optical machine component 1 to move left and right, a front-back moving unit 5 for driving the diopter adjusting component 4 to move back and forth, a front-back guiding unit 6 arranged on the optical machine component 1 for guiding the diopter adjusting component 4 to move back and forth, and a push-pull driving component; the front-back movement unit 5 is connected with the diopter adjusting component 4 in a left-right sliding way through a left-right sliding component 7; the push-pull driving assembly comprises a left output unit 80 for driving the left motion unit 2 to work, a front output unit 81 for driving the front motion unit 5 to work, an adjusting input unit 82 and a push-pull clutch unit 83 for carrying out input-output clutch adjustment;
The push-pull operation of the push-pull clutch unit 83 is used for switching the adjustment input unit 82 to be matched with the left-right output unit 80 or matched with the front-back output unit 81, when the push-pull clutch unit is matched with the left-right output unit 80, the rotation motion of the adjustment input unit 82 drives the left-right motion unit 2 to work, the optical machine component 1 is driven to move left and right under the guiding action of the left-right guiding unit 3 to finish the adjustment of the interpupillary distance, at the moment, the diopter adjusting component 4 moves left and right along with the optical machine component 1 under the action of the front-back guiding unit 6 and the left-right sliding component 7, when the push-pull clutch unit is matched with the front-back output unit 81, the rotation motion of the adjustment input unit 82 drives the front-back motion unit 5 to work, the diopter adjusting component 4 is driven to move back and forth under the guiding action of the front-back guiding unit 6, and the two adjusting components are distributed to adjust, and the purpose of accurately controlling the monocular adjusting value can be realized simply and conveniently;
preferably, the push-pull clutch unit 83 includes a rotary driving member 830 and a push-pull main shaft 831 coupled thereto; the push-pull main shaft 831 is connected with and driven to move by the adjustment input unit 82; the structure is succinct, convenient assembling.
Preferably, the left and right output unit 80 includes a left and right driving gear 800, a first through hole 8000 is provided on the left and right driving gear 800 for the push-pull main shaft 831 to pass through, and a first groove 8001 is provided on one side surface of the left and right driving gear 800 to be matched with the rotation driving member 830; the outer side surface of the rotation driving member 830 is provided with a rotation driving member convex point 8300, and the inner wall of the first groove 8001 is provided with a first annular key groove 8002 matched with the rotation driving member convex point 8300; the inner diameter of the first groove 8001 is larger than the inner diameter of the first through hole 8000; when the push-pull adjusting input unit 82 makes the push-pull spindle 831 drive the rotation driving member 830 to move into the first groove 8001, the rotation driving member protruding point 8300 is clamped into the first annular key groove 8002, and at this time, the rotation adjusting input unit 82 can drive the left and right driving gears 800 to rotate and output for adjustment.
Preferably, the front and rear output unit 81 includes a diopter adjustment wheel 810, one side surface of the diopter adjustment wheel 810 is provided with a second groove 8100 matched with the rotary driving member 830, and the inner wall of the second groove 8100 is provided with a second annular key groove 8101 matched with the rotary driving member protruding point 8300; the principle at this time is consistent with the left-right adjustment principle;
Through foretell control and front and back complex mode, just can be quick succinct and reliable realization control and front and back switching operation, and overall structure is very compact, occupation space is little.
Preferably, the front-rear output unit 81 further includes a front-rear driving gear 811 coaxially fixed with the diopter adjustment wheel 810; the back and forth movement unit 5 includes a back and forth movement screw 50 and a back and forth movement screw block 51 engaged therewith; a transmission bevel gear 52 meshed with the front-rear driving gear 811 is coaxially provided on the front-rear moving screw 50; preferably, the front and rear driving gears are bevel gears; in this way, a simple and reliable back-and-forth adjustment movement is possible.
Preferably, the left and right sliding assembly 7 comprises a sliding seat 70 fixedly connected with the diopter adjusting assembly 4, and a sliding assembly 71 which is connected with the front and back moving screw block 51 in a left and right sliding manner is arranged on the sliding seat 70; the preferred sliding component is a sliding groove which is in sliding fit with the front-back movement thread block; of course, other existing sliding forms such as sliding rails can also be used; the whole structure is reasonable and compact, the stability is good, and the control precision is high.
Preferably, the left-right movement unit 2 includes a left-right movement screw 20 and a left-right movement screw block 21 engaged therewith; the left-right movement thread block 21 is fixedly arranged on the optical machine component 1; the left and right movement screw 20 is coaxially provided with a left and right movement gear 22, and further comprises a left and right movement pinion gear 23 meshed with the left and right movement gear 22, wherein the left and right movement pinion gear 23 is meshed with a left and right driving gear 800; the transmission reliability is good, and the control precision is high.
Preferably, the pupil distance diopter push-pull rotation adjusting mechanism further includes a left and right adjusting bracket 90 for mounting the left and right output units and a front and rear adjusting bracket 91 for mounting the front and rear output units;
The left and right adjusting bracket 90 is provided with a mounting plate 900, the left and right driving gear 800 is coaxially connected with a connecting seat 801, and a first through hole 8000 is arranged on the connecting seat 801; the mounting plate 900 is provided with a second through hole 9000 matched with the connecting seat 801; the driving gear connecting piece 802 is connected with the connecting seat 801, and an annular boss 8020 matched with the second through hole 9000 is arranged on one side surface of the driving gear connecting piece 802 facing the connecting seat 801; the driving gear connection piece 802 is provided with a third through hole 8021 for the push-pull main shaft 831 to pass through; the integral is good, the structure is very compact, the volume is small, and the concentricity and the strength are good.
Preferably, the adjustment input unit 82 includes an adjustment knob 820 and a movable shaft 821 connected; the movable shaft 821 is fixedly connected with the push-pull main shaft 831; a fourth through hole 100 through which the movable shaft 821 passes is provided in the glasses main body case 10 (only a part of which is shown in the drawings of the specification), and a first annular groove 8210 and a second annular groove 8211 are coaxially provided side by side on the outer side surface of the movable shaft 821; one or more elastic beads 1000 (spring and glass bead combination) are arranged on the inner wall of the fourth through hole 100; the front end of the movable shaft 821 is provided with a receiving groove 8212 for receiving the driving gear connection 802; the mounting plate 900 is provided with a positioning groove 9001 which is matched with the front end of the movable shaft 821; the integral is good, the structure is very compact, the volume is small, and the concentricity and the strength are good.
Preferably, the left and right guiding units 3 comprise left and right guiding sleeves 30 fixedly arranged on the optical machine assembly 1 and left and right guiding shafts 31 arranged on the optical machine bracket 11 and matched with the left and right guiding sleeves; the front and rear guiding unit 6 comprises a front and rear guiding shaft 60 arranged on the diopter adjusting component 4 and a front and rear guiding sleeve 61 fixedly arranged on the optical machine component 1 and matched with the front and rear guiding shaft; the positions of the guide shaft and the guide sleeve can be interchanged; of course, other existing guiding mechanisms can be substituted, and simple substitution based on such principles is within the scope of the present application.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (4)
1. The pupil distance diopter push-pull rotary adjusting mechanism is characterized by comprising two adjusting components, wherein each adjusting component comprises a left-right movement unit for driving an optical machine component to move left and right, a left-right guiding unit for guiding the optical machine component to move left and right, a front-back movement unit for driving the diopter adjusting component to move back and forth, a front-back guiding unit arranged on the optical machine component for guiding the diopter adjusting component to move back and forth, and a push-pull driving component; the back-and-forth movement unit is connected with the diopter adjusting component in a left-and-right sliding way through a left-and-right sliding component; the push-pull driving assembly comprises a left output unit and a right output unit which drive the left motion unit and the right motion unit to work, a front output unit and a rear output unit which drive the front motion unit and the rear motion unit to work, an adjusting input unit and a push-pull clutch unit which carries out input-output clutch adjustment;
The push-pull clutch unit comprises a rotary driving piece and a push-pull main shaft connected with the rotary driving piece; the push-pull main shaft is connected with the adjusting input unit and driven to move by the adjusting input unit; the left and right output units comprise left and right driving gears, the left and right driving gears are provided with first through holes for the push-pull main shaft to pass through, and one side surfaces of the left and right driving gears are provided with first grooves matched with the rotary driving piece;
The outer side surface of the rotary driving piece is provided with a rotary driving piece salient point, and the inner wall of the first groove is provided with a first annular key groove matched with the rotary driving piece salient point; the inner diameter of the first groove is larger than that of the first through hole; the front and rear output units comprise diopter adjusting wheels, a second groove matched with the rotary driving piece is formed in one side surface of each diopter adjusting wheel, and a second annular key groove matched with the rotary driving piece in a protruding point mode is formed in the inner wall of each second groove;
The front and rear output unit further comprises a front and rear driving gear coaxially fixed with the diopter adjusting wheel; the front-back movement unit comprises a front-back movement screw rod and a front-back movement thread block matched with the front-back movement screw rod; a transmission bevel gear meshed with the front and rear driving gears is coaxially arranged on the front and rear movement screw rod;
The pupil distance diopter push-pull rotary adjusting mechanism further comprises a left adjusting bracket and a right adjusting bracket which are provided with the left output unit and the right output unit, and a front adjusting bracket and a rear adjusting bracket which are provided with the front output unit and the rear output unit; the left and right adjusting brackets are provided with mounting plates, the left and right driving gears are coaxially connected with connecting seats, and the first through holes are formed in the connecting seats; the mounting plate is provided with a second through hole matched with the connecting seat; the driving gear connecting piece is connected with the connecting seat, and an annular boss matched with the second through hole is arranged on the surface of one side of the driving gear connecting piece facing the connecting seat; the driving gear connecting piece is provided with a third through hole for the push-pull main shaft to pass through;
The adjusting input unit comprises an adjusting knob and a movable shaft which are connected; the movable shaft is fixedly connected with the push-pull main shaft; the glasses main body shell is provided with a fourth through hole for the movable shaft to pass through, and the outer side surface of the movable shaft is coaxially provided with a first annular groove and a second annular groove side by side; one or more elastic beads are arranged on the inner wall of the fourth through hole; the front end of the movable shaft is provided with an accommodating groove for accommodating the driving gear connecting piece; the mounting plate is provided with a positioning groove matched with the front end of the movable shaft; the push-pull operation of the push-pull clutch unit is used for switching and adjusting the input unit to be matched with the left and right output units or matched with the front and rear output units, when the input unit is matched with the left and right output units, the rotary motion of the input unit can drive the left and right motion units to work, and the optical machine component is driven to move left and right under the guiding action of the left and right guiding units to complete the adjustment of the interpupillary distance.
2. The pupil distance diopter push-pull rotation adjustment mechanism of claim 1, wherein the left and right sliding assembly comprises a sliding seat fixedly connected with the diopter adjustment assembly, and a sliding assembly which is connected with the front and back movement threaded block in a left and right sliding manner is arranged on the sliding seat.
3. The pupil distance diopter push-pull rotation adjustment mechanism according to any one of claims 1 and 2, wherein the left-right movement unit includes a left-right movement screw rod and a left-right movement screw block matched with the left-right movement screw rod; the left-right movement thread block is fixedly arranged on the optical machine component; the left and right movement screw is coaxially provided with a left and right movement gear, and further comprises a left and right movement pinion meshed with the left and right movement gear, and the left and right movement pinion is meshed with the left and right driving gear.
4. The pupil distance diopter push-pull rotation adjustment mechanism of claim 3, wherein the left and right guide units comprise left and right guide sleeves fixedly arranged on the optical machine assembly and left and right guide shafts arranged on an optical machine bracket and matched with the left and right guide sleeves; the front and rear guide unit comprises a front and rear guide shaft arranged on the diopter adjusting component and a front and rear guide sleeve fixedly arranged on the optical machine component and matched with the front and rear guide shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111599222.6A CN114326121B (en) | 2021-12-24 | 2021-12-24 | Pupil distance diopter push-pull rotation adjusting mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111599222.6A CN114326121B (en) | 2021-12-24 | 2021-12-24 | Pupil distance diopter push-pull rotation adjusting mechanism |
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| CN114326121A CN114326121A (en) | 2022-04-12 |
| CN114326121B true CN114326121B (en) | 2024-06-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN216526539U (en) * | 2021-12-24 | 2022-05-13 | 深圳纳德光学有限公司 | Pupil distance diopter push-and-pull rotary adjusting mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1039189A (en) * | 1996-07-24 | 1998-02-13 | Minolta Co Ltd | Visibility adjusting mechanism for binoculars |
| CN106873155B (en) * | 2015-12-11 | 2020-01-17 | 深圳纳德光学有限公司 | Head-mounted display |
| CN206431363U (en) * | 2016-10-13 | 2017-08-22 | 成都虚拟世界科技有限公司 | A kind of head-wearing display device |
| CN206741089U (en) * | 2016-10-13 | 2017-12-12 | 成都虚拟世界科技有限公司 | A kind of interpupillary distance adjusting means, diopter adjusting means and wear display device |
| CN106483661B (en) * | 2016-11-24 | 2019-02-26 | 歌尔科技有限公司 | Wear-type virtual reality device interpupillary adjustment mechanism and wear-type virtual reality device |
| CN206990926U (en) * | 2017-03-31 | 2018-02-09 | 昆明理工大学 | A kind of VR glasses of adjustable focal length and interpupillary distance |
| CN206848589U (en) * | 2017-04-21 | 2018-01-05 | 歌尔股份有限公司 | A kind of head-mounted display apparatus |
| CN209560199U (en) * | 2018-05-31 | 2019-10-29 | 成都虚拟世界科技有限公司 | A kind of interpupillary adjustment mechanism and wear display equipment |
| TWI714450B (en) * | 2020-02-06 | 2020-12-21 | 雙瑩科技股份有限公司 | Interpupillary distance and diopter adjustment mechanism |
| CN113267891A (en) * | 2020-02-14 | 2021-08-17 | 双莹科技股份有限公司 | Pupil distance and diopter adjusting mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN216526539U (en) * | 2021-12-24 | 2022-05-13 | 深圳纳德光学有限公司 | Pupil distance diopter push-and-pull rotary adjusting mechanism |
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