CN107121779B - Display device - Google Patents
Display device Download PDFInfo
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- CN107121779B CN107121779B CN201710564929.0A CN201710564929A CN107121779B CN 107121779 B CN107121779 B CN 107121779B CN 201710564929 A CN201710564929 A CN 201710564929A CN 107121779 B CN107121779 B CN 107121779B
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- lens
- display device
- housing
- adjusting
- containing unit
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0176—Head mounted characterised by mechanical features
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The present invention relates to a display device including: a housing; a lens holding unit supported in the housing; a display screen containing unit supported in the housing and disposed opposite to the lens containing unit; focal length adjusting units disposed on opposite ends of the housing; the focal length adjusting unit comprises a fixed block fixedly arranged on the side wall of the shell; the adjusting boss is positioned on one side of the fixed block; and the adjusting rod is used for connecting the fixed block and the adjusting lug boss in series from the other side of the fixed block. The display device has a simple and reasonable structure and a precise focusing function, so that a user can intuitively experience the imaging quality of the lens.
Description
Technical Field
The present disclosure relates to display devices, and particularly to a head-mounted lens optical performance display device.
Background
VR (Virtual Reality) is Virtual Reality, and a user can be immersed in the Virtual Reality by constructing a three-dimensional dynamic real scene, so that the Virtual Reality can give people a feeling of being personally on the scene, can vividly express the environment of a Virtual world, can influence various industries, and brings vivid visual and sensory experiences to people. VR has been widely used in entertainment games, shopping, video media, medical health, research and teaching, real estate, travel industry, urban planning, military space and flight, etc. changing aspects of life. The VR device which is most widely used at present is a VR helmet, and the inside of the helmet for optical imaging is an optical lens. At present, plastic aspheric lenses or Fresnel lenses are mainly adopted for the optical lenses, an injection molding process is adopted, and the most direct mode for detecting the imaging quality of the existing VR lenses is direct experience.
In the prior art, the head-mounted display device for experiencing the imaging quality of the VR lens is complex in structure, does not have a precise focusing function, and cannot ensure the imaging quality, so that the development of a display device which can experience the imaging quality of the plastic aspheric lens or the Fresnel lens and is high in precision is imminent.
Disclosure of Invention
The invention aims to provide a display device which has a simple and reasonable structure and a precise focusing function and enables a user to visually experience the imaging quality of a lens.
To achieve the above object, the present invention provides a display device comprising:
a housing;
a lens holding unit supported in the housing;
a display screen containing unit supported in the housing and disposed opposite to the lens containing unit;
focal length adjusting units disposed on opposite ends of the housing; the focal length adjusting unit comprises a fixed block fixedly arranged on the side wall of the shell;
the adjusting boss is positioned on one side of the fixed block; and
and the adjusting rod is used for connecting the fixed block and the adjusting lug boss in series from the other side of the fixed block.
According to an aspect of the present invention, the fixing block includes a through hole;
the adjusting boss is provided with a threaded hole;
the adjusting rod comprises a fixing part fixed in the through hole of the fixing block and an adjusting part screwed into the fixing part and the threaded hole.
According to an aspect of the present invention, the regulating portion has graduation marks equally dividing an outer circumferential surface 50 thereof, and the outer circumferential surface of the fixing portion has graduation marks in a minimum unit of 0.01mm.
According to one aspect of the invention, the housing comprises a recess for mounting the lens containing unit;
the limiting plate is arranged on the back of the groove and close to the inner wall of the shell;
and a guide groove provided on the same side of the housing as the fixed block;
the guide groove is provided with a slide rail.
According to one aspect of the invention, the recess comprises at least three clamping grooves for clamping the lens-holding unit.
According to an aspect of the present invention, the guide grooves are symmetrically disposed at both ends of the housing, and two guide grooves are disposed at each end.
According to one aspect of the invention, the lens containing unit comprises a lens holder and a pressing ring;
the lens supporting seat comprises two lens containing grooves which are symmetrically arranged around the central line of the lens supporting seat and are used for containing lenses;
the lens containing groove comprises at least two positioning holes which are matched with the pressing ring to position the lens.
According to one aspect of the invention, the lens supporting seat further comprises at least two fixing buckles which are arranged on one side wall of the lens supporting seat and can be matched and connected with the clamping grooves;
at least one sliding groove is formed in one side, opposite to the side wall where the fixed buckle is located, of the lens supporting seat, and a movable buckle which is connected with the lens supporting seat through a spring and can be connected with the clamping groove in a matched mode is installed in the sliding groove.
According to one aspect of the invention, the two fixing buckles are symmetrically arranged about the central line of the lens supporting seat;
the central line of the movable buckle is superposed with the central line of the lens supporting seat.
According to one aspect of the invention, the pressing ring comprises a pressing ring body and at least two positioning parts which are arranged at one end of the pressing ring body and can be matched and clamped with the positioning holes for pressing the lens;
the cross section of the positioning part is L-shaped.
According to an aspect of the present invention, the display screen accommodating unit includes an installation groove for installing the display screen;
the bulge is positioned on the back surface of the mounting groove and corresponds to the limiting plate;
the guide rails are positioned at two ends of the display screen containing unit and are connected with the guide grooves in a one-to-one correspondence manner; and
the mounting lugs are positioned at two ends of the display screen containing unit and are positioned between the two guide rails;
the guide rail has a threaded hole.
According to an aspect of the present invention, the mounting lug includes a threaded through hole for coupling with the adjustment part of the adjustment lever;
and a hole for fixedly connecting the adjusting boss.
According to an aspect of the present invention, the housing is integrally provided in a rectangular parallelepiped shape, and the limit plate and the projection are provided adjacent to four corners of the housing in correspondence with each other.
According to an aspect of the present invention, the stopper plate and the protrusion have a spring hole, and a return spring is disposed between the spring hole and the spring hole.
According to one aspect of the invention, the display device further comprises a positioning piece which is in threaded connection with the threaded hole of the guide rail and can move in the sliding rail in a reciprocating mode.
According to one aspect of the invention, the end of the housing near the adjustment lever is provided with a pull ring.
According to the display device provided by the invention, the lens containing unit is fixedly connected with the shell, the display screen containing unit is movably connected with the shell, the distance between the display screen containing unit and the lens containing unit can be adjusted through the focal length adjusting unit, namely, the display device is focused, so that an observer can visually observe the imaging condition of the lens, and further evaluate the imaging quality of the lens.
According to the focal length adjusting unit, the adjusting rod penetrates through the through hole to be connected with the threaded hole in the adjusting boss through threads, and scales are arranged on the outer circle surfaces of the fixing part and the adjusting part of the adjusting rod. When the adjusting part of the adjusting lever is rotated, the adjusting part moves up or down, so that the adjusting boss moves up or down, and the moving distances of the adjusting part and the adjusting boss are equal. The display device comprises a lens containing unit, a focal length adjusting unit, a lens containing unit and a lens, wherein the lens containing unit is arranged on the lens containing unit, and the lens containing unit is arranged on the lens containing unit. Because the minimum scale on the surface of the excircle of the fixing part of the adjusting rod is 0.01mm, the precision focusing of the display device can be realized, and the focusing precision can reach 0.01mm.
When the lens containing unit is installed and fixed on the shell, the two fixed buckles on the lens containing unit are firstly placed into the two corresponding clamping grooves for fixing, and then the movable buckle is placed into the corresponding clamping groove for fixing. Because the movable buckle is connected with the lens supporting seat through the spring, the movable buckle can be placed into the corresponding clamping groove when the spring is in a compression state, and the movable buckle is matched and fixedly connected with the clamping groove under the action of the elastic force of the spring. The benefit of so setting is when satisfying structural strength, has simplified the fixed mode that the lens held the unit in the casing, and the activity buckle is favorable to in time adjusting the position state that the lens held the unit.
According to the display device, the adjusting part penetrates through the threaded hole in the adjusting boss to be in threaded connection with the threaded through hole in the mounting lug of the display screen containing unit, the adjusting boss is fixedly connected with the mounting lug, when the adjusting part of the adjusting rod is adjusted, the adjusting boss drives the display screen containing unit to move in the guide groove of the shell in a directional mode, the change of the distance between the display screen containing unit and the lens containing unit is achieved, namely the distance between the lens and the display screen is changed, and focusing is completed. And the fixed part of adjusting the pole and the excircle surface of regulating part all have the scale, and the minimum scale on the fixed part excircle surface is 0.01mm, has realized accurate focusing, and the focusing precision has reached 0.01mm.
Drawings
Fig. 1 and 2 schematically show a perspective view of a display device according to an embodiment of the present invention;
fig. 3 is a perspective view schematically showing a focus adjusting unit according to an embodiment of the present invention;
FIG. 4 is a perspective view schematically illustrating a housing according to an embodiment of the present invention;
fig. 5 is a perspective view schematically showing a lens containing unit according to an embodiment of the present invention;
FIG. 6 is a perspective view schematically illustrating a housing according to an embodiment of the present invention;
fig. 7 and 8 are perspective views schematically showing a display screen containing unit according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings, which is for convenience and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above-described terms should not be construed as limiting the present invention.
The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.
Fig. 1 and 2 are perspective views schematically showing a display device according to an embodiment of the present invention.
As shown in fig. 1 and 2, the display device according to the present invention includes a housing 1, a lens containing unit 2, a display screen containing unit 3, and a focus adjusting unit 4. In the present embodiment, the housing 1 according to the present invention is used to support the lens containing unit 2 and the display screen containing unit 3. The lens holds unit 2 supporting in casing 1 one side, and the lens holds unit 2 and casing 1 fixed connection, and the display screen holds unit 3 and the lens holds unit 2 and supports the opposite side at casing 1 with setting up relatively, as shown in figure 1 and figure 2 promptly, and the display screen holds unit 3 and sets up at the back that holds unit 2 place casing 1 for the lens, and the display screen holds unit 3 and casing 1 be swing joint. In the present embodiment, the lens containing unit 2 and the display screen containing unit 3 are detachably connected to the housing 1. The focus adjusting units 4 according to the present invention are provided on opposite ends of the housing 1 in the length direction of the lens containing unit 2, that is, on the left and right ends of the housing 1 in fig. 1, 2. The focus adjusting unit 4 is respectively fixedly connected with the shell 1 and two ends of the display screen containing unit 3. According to the display device of the present invention, the housing 1 and the lens containing unit 2 may be integrally formed.
According to the display device provided by the invention, the lens containing unit 2 is fixedly connected with the shell 1, the display screen containing unit 3 is movably connected with the shell 1, and the distance between the display screen containing unit 3 and the lens containing unit 2 can be adjusted through the focal length adjusting unit 4, namely, the display device is focused. By the display device, an observer can intuitively observe the imaging condition of the lens on the display screen, and intuitively experience the optical performance of the lens, so that the imaging quality of the lens is accurately evaluated.
Fig. 3 is a perspective view schematically showing a focus adjusting unit according to an embodiment of the present invention. As shown in fig. 3, one end of the housing 1 according to the present invention is fixedly connected to the focus adjusting unit 4, and the focus adjusting unit 4 includes a fixing block 401, an adjusting boss 402, and an adjusting lever 403. In the present embodiment, the focus adjusting unit 4 is connected to the housing 1 through a fixing block 401, the fixing block 401 has a screw hole, and the fixing block 401 is fixed to a sidewall of the housing 1 by a bolt connection. Of course, the fixed connection between the fixing block 401 and the housing 1 may also be implemented by other manners, for example, the fixing block 401 is fixed to the housing 1 by adhesion, as long as the fixing connection manners meeting the strength requirement all meet the condition.
As shown in fig. 3, an adjusting boss 402 according to the present invention is disposed below the fixing block 401, and the adjusting boss 402 is fixedly connected to the fixing block 401. The fixed block 401 is provided with through hole 4011 along its direction of height, is provided with screw hole 4021 on adjusting boss 402, and screw pitch is 0.5mm, and the screw hole runs through whole adjusting boss 402, and through hole 4011 coincides with screw hole 4021's center. The adjustment lever 403 according to the present invention includes a fixing portion 4031 and an adjustment portion 4032. The fixing portion 4031 is fixed in the through hole 4011 of the fixing block 401, the adjusting portion 4032 passes through the fixing portion 4031 and the through hole 4011 to be connected with the threaded hole 4021 of the adjusting boss 402 by a screw thread, and the adjusting rod 403 connects the fixing block 401 and the adjusting boss 402 in series through the adjusting portion 4032. In the present embodiment, the adjustment portion 4032 has 50 graduation marks on the upper end outer circumferential surface, a screw at the lower end, and a pitch of 0.5mm. The outer circle surface of the fixing portion 4031 has a scale mark with a minimum unit of 0.01mm, the inside of the fixing portion 4031 is of an internal thread structure, and the thread pitch is 0.5mm. In addition, in the present embodiment, the fixing block 401 and the adjusting boss 402 according to the present invention are made of metal materials, but may be made of any other materials that can satisfy structural strength.
According to the focal length adjusting unit 4 of the present invention, the adjusting rod 403 passes through the through hole 4011 and is connected with the threaded hole 4021 on the adjusting boss 402 by a screw, and the outer circumferential surfaces of the fixing portion 4031 and the adjusting portion 4032 of the adjusting rod 403 are provided with scales. When the adjusting portion 4032 of the adjustment lever 403 is rotated, the adjusting portion 4032 moves upward or downward, so that the adjustment boss 402 moves upward or downward, and the adjusting portion 4032 and the adjustment boss 402 move by the same distance. Since the focal length adjusting unit 4 is fixedly connected with the display screen containing unit 3, the adjusting boss 402 can drive the display screen containing unit 3 to move when moving, that is, the distance between the display screen containing unit 3 and the lens containing unit 2 is changed, so that the display device according to the invention can be focused. Because the minimum scale on the excircle surface of the fixing part 4031 of the adjusting rod 403 is 0.01mm, the precision focusing of the display device can be realized, and the focusing precision can reach 0.01mm.
Fig. 4 is a perspective view schematically showing a housing according to an embodiment of the present invention. As shown in fig. 4, the case 1 according to the present invention includes a groove 101 and a tab 104. In this embodiment, the housing 1 according to the present invention is provided in a rectangular parallelepiped shape as a whole, and the recess 101 in the housing 1 is used for mounting the lens containing unit 2. At least three clamping grooves 1011 are formed in the groove 101, and the lens containing unit 2 is fixed in the groove 101 of the housing 1 through the clamping grooves 1011. In the present embodiment, 3 card slots 1011 are provided. As shown in fig. 4, in the present embodiment, two pull rings 104 are provided, the two pull rings 104 are respectively located above the left and right ends of the housing 1, the pull rings 104 are fixedly connected to the housing 1, and the two pull rings 104 are used for mounting a headband, so as to facilitate wearing and using of the display device.
Fig. 5 is a perspective view schematically showing a lens-holding unit according to an embodiment of the present invention. As shown in fig. 5, the lens containing unit 2 according to the present invention includes a lens holder 201 and a pressing ring 202. In this embodiment, the lens supporting seat 201 includes two lens holding grooves 2011, the lens holding grooves 2011 are used for holding lenses, and the two lens holding grooves 2011 are symmetrically arranged about the center line of the lens holding unit 2. As shown in fig. 5, the clamping ring 202 according to the present invention includes a clamping ring body 2021 and positioning portions 2022, the positioning portions 2022 are provided at the lower end of the clamping ring body 2021, and the number of the positioning portions 2022 is at least two. At least two positioning holes 2011a are formed in the lens holding groove 2011, the positioning holes 2011a and the positioning portion 2022 are correspondingly formed, and the positioning portion 2022 and the positioning holes 2011a can be mutually clamped and matched. In the present embodiment, two positioning portions 2022 and two positioning holes 2011a are provided.
According to the lens containing unit 2 of the present invention, the pressing ring 202 is located above the lens containing groove 2011, and the positioning portion 2022 on the pressing ring 202 is L-shaped. Firstly, the lens is placed in the lens holding groove 2011, the L-shaped positioning portion 2022 on the pressing ring 202 extends into the positioning hole 2011a opposite to the lens holding groove 2011, and then the pressing ring 202 is rotated by 5 degrees to 15 degrees, so that the positioning portion 2022 is clamped in the positioning hole 2011a, and the lens is fixedly mounted. So set up and make lens fixed and dismantlement at lens holding groove 2011 become very convenient and fast.
As shown in fig. 5, at least two fixing buckles 2012 are disposed on the sidewall of the lens holder 201 according to the present invention, in this embodiment, the number of the fixing buckles 2012 is 2, and the two fixing buckles 2012 are disposed symmetrically with respect to the center line of the lens holder 201. At least one sliding groove 2013 is arranged on the side of the lens supporting seat 201 opposite to the side wall where the fixed buckle 2012 is located, and a movable buckle 2014 is installed in the sliding groove 2013 in a matching mode. The movable buckle 2014 is connected with the lens supporting seat 201 through a spring, and the center line of the movable buckle 2014 is superposed with the center line of the lens supporting seat 201. Two fixed buckles 2012 and movable buckles 2014 according to the present invention are disposed in one-to-one correspondence with the three slots 1011 in fig. 4, and the fixed buckles 2012 and the movable buckles 2014 can be fixed in cooperation with the slots 1011, that is, the lens containing unit 2 is fixed in the housing 1 by the fixed buckles 2012 and the movable buckles 2014 in cooperation with the slots 1011. Of course, the central lines of the two fixed buckles 2012 and the central line of the movable clamping groove 2014 may not coincide with the central line of the lens supporting seat 201, so long as the arrangement of the fixed buckles 2012 and the movable clamping groove 2014 corresponding to the clamping groove 1011 is ensured, and the requirement of use strength is ensured. Likewise, the number of the fixed buckles 2012 and the movable buckles 2014 is not limited.
When the lens containing unit 2 is mounted and fixed on the housing 1, the two fixed fasteners 2012 on the lens containing unit 2 are first placed into the two corresponding slots 1011 for fixing, and then the movable fasteners 2014 are placed into the corresponding slots 1011 for fixing. Because the movable buckle 2014 is connected with the lens supporting seat 201 through the spring, the movable buckle 2014 can be placed into the corresponding clamping groove 1011 when the spring is in a compressed state, and the movable buckle 2014 is matched and fixedly connected with the clamping groove 1011 under the action of the elastic force of the spring. The benefit that so sets up is when satisfying structural strength, has simplified the fixed mode that the lens held unit 2 in casing 1, and activity buckle 2014 is favorable to in time adjusting the position state that the lens held unit 2.
Fig. 6 is a perspective view schematically showing a housing according to an embodiment of the present invention. As shown in fig. 6, according to the housing 1 of the present invention, a limiting plate 102 is provided on the other side opposite to the side where the lens containing unit 2 is installed, that is, the limiting plate 102 is provided on the back side of the housing 1 where the lens containing unit 2 is installed. In the present embodiment, the number of the limiting plates 102 is 4, the 4 limiting plates 102 are respectively disposed near four corners of the housing 1, and each limiting plate 1021 has a spring hole 1021. The housing 1 according to the present invention further includes a guide groove 103, and the housing 1 is movably connected to the display screen accommodating unit 3 through the guide groove 103. The guide grooves 103 are provided on the same side of the focus adjusting unit 4, i.e., on both left and right ends of the housing 1 in fig. 6. In the present embodiment, the guide grooves 103 are symmetrically provided at both ends of the housing 1, and two guide grooves 103 are provided at each end, and each guide groove 103 is provided with a slide rail 1031 along the height direction thereof.
Fig. 7 and 8 are perspective views schematically showing a display screen containing unit according to an embodiment of the present invention. As shown in fig. 7 and 8, the display screen containing unit 3 according to the present invention includes a mounting groove 301, a projection 302, and a guide rail 303. The mounting groove 301 is used for mounting a display screen, and display screens with different sizes can be inserted into the mounting groove 301. The protrusion 302 according to the present invention is located on the back of the mounting groove 301, the protrusion 302 is located corresponding to the position-limiting plate 102 on the housing 1, the protrusion 302 is provided with the spring hole 3021, and the return spring is located between the spring hole 1021 of the position-limiting plate 102 and the spring hole 3021 of the protrusion 302, which is advantageous in that the position accuracy of the display screen containing unit 3 and the lens containing unit 2 in the housing 1 can be maintained, that is, the parallelism and the center coincidence degree of the lens containing unit 2 and the display screen containing unit 3 can be ensured.
As shown in fig. 7, the guide rails 303 according to the present invention are provided in one-to-one correspondence with the guide grooves 103 of the housing 1 in fig. 6, that is, the guide rails 303 are symmetrically provided at both ends of the display screen holding unit 3, and two guide rails 303 are provided at each end, and the guide rails 303 can relatively slide in the guide grooves 103. Referring to fig. 3, 6 and 7, the guide rail 303 according to the present invention is provided with a threaded hole, and the positioning member 5 is fixedly connected to the guide rail 303 through the threaded hole, so that the guide rail cannot be separated from the guide groove 103 when sliding in the guide groove 103 due to the presence of the positioning member 5, thereby ensuring the reciprocating movement of the guide rail 303 in the guide groove 103.
As shown in fig. 7, the display screen holding unit 3 according to the present invention further includes two mounting ears 304, the two mounting ears 304 are disposed at two ends of the display screen holding unit 3, and each mounting ear 304 is located between the two guide rails 303 on the same side. The mounting ears 304 are provided with threaded through holes 3041 and 3042. In the present embodiment, the adjusting projection 402 of the focus adjusting unit 4 is fixedly connected to the display screen containing unit 3 through the hole 3042. The center of the threaded through hole 3041 on the mounting ear 304 coincides with the center of the threaded hole 4021 on the adjustment boss 402, and the adjustment portion 4032 of the adjustment rod 403 passes through the threaded hole 4021 and is in threaded connection with the threaded through hole 3041 of the mounting ear 304.
According to the display device of the invention, since the adjusting portion 4032 passes through the threaded hole 4021 on the adjusting boss 402 to be in threaded connection with the threaded through hole 3041 on the mounting ear 304 of the display screen containing unit 3, and the adjusting boss 402 is fixedly connected with the mounting ear 304, when the adjusting portion 4032 of the adjusting rod 403 is adjusted, the adjusting boss 402 drives the display screen containing unit 3 to move directionally in the guide groove 103 of the housing 1, so that the change of the distance between the display screen containing unit 3 and the lens containing unit 2 is realized, that is, the distance between the lens and the display screen is changed to complete focusing. The excircle surfaces of the fixing part 4031 and the adjusting part 4032 of the adjusting rod 403 are provided with scales, and the minimum scale on the excircle surface of the fixing part 4031 is 0.01mm, so that precise focusing is realized, and the focusing precision reaches 0.01mm.
According to the display device provided by the invention, when in use, lenses needing user experience are placed in the lens containing units 2, then the lens containing units 2 are installed on the shell 1, then proper display screens are selected and placed in the display screen containing units 3, and then the display screen containing units 3 are installed on the shell 1. At this time, the user can wear the display device of the invention on the head to observe in a head wearing manner, and the user can adjust the distance between the display screen and the lens through the focal length adjusting unit 4 during observation, so that the user can observe the images displayed by the lens at different focal lengths through the display screen, that is, the user can visually experience the optical performance of the lens through the display device of the invention, and can directly judge the optical performance of the lens, thereby accurately evaluating the imaging quality of the lens and the like.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A display device, comprising:
a housing (1);
a lens containing unit (2) supported in the housing (1);
a display screen containing unit (3) supported in the housing (1) and disposed opposite to the lens containing unit (2);
focal length adjustment units (4) provided on opposite ends of the housing (1); the focus adjusting unit (4) is characterized by comprising a fixed block (401) fixedly arranged on the side wall of the shell (1);
the adjusting boss (402) is positioned on one side of the fixing block (401); and
the adjusting rod (403) is used for connecting the fixing block (401) and the adjusting boss (402) in series from the other side of the fixing block (401);
the housing (1) comprises a groove (101) for mounting the lens containing unit (2);
the limiting plate (102) is arranged on the back of the groove (101) and close to the inner wall of the shell (1);
and a guide groove (103) provided on the same side of the housing (1) as the fixed block (401);
the guide groove (103) has a slide rail (1031).
2. The display device according to claim 1, wherein the fixing block (401) comprises a through hole (4011);
the adjustment boss (402) has a threaded hole (4021);
the adjusting rod (403) comprises a fixing part (4031) fixed in the through hole (4011) of the fixing block (401), and an adjusting part (4032) screwed into the fixing part (4031) and the threaded hole (4021).
3. The display device according to claim 2, wherein the adjustment portion (4032) has graduation marks equally dividing an outer circumferential surface 50 thereof, and the outer circumferential surface of the fixing portion (4031) has graduation marks in a minimum unit of 0.01mm.
4. Display device according to claim 1, wherein the recess (101) comprises at least three clamping grooves (1011) for clamping the lens containing unit (2).
5. A display device as claimed in claim 4, characterised in that the guide slots (103) are arranged symmetrically at both ends of the housing (1), and that two guide slots (103) are provided at each end.
6. Display device according to claim 5, characterised in that the lens containing unit (2) comprises a lens holder (201) and a pressing ring (202);
the lens supporting seat (201) comprises two lens containing grooves (2011) which are symmetrically arranged around the central line of the lens supporting seat and are used for containing lenses;
the lens holding groove (2011) includes at least two positioning holes (2011 a) that cooperate with the pressing ring (202) to position the lens.
7. The display device according to claim 6, wherein the lens holder (201) further comprises at least two fixing clips (2012) disposed on one side wall thereof and capable of being engaged with the engaging groove (1011);
at least one sliding groove (2013) is formed in one side, opposite to the side wall where the fixed buckle (2012) is located, of the lens supporting seat (201), and a movable buckle (2014) which is connected with the lens supporting seat (201) through a spring and can be connected with the clamping groove (1011) in a matched mode is installed in the sliding groove (2013).
8. The display device according to claim 7, wherein the fixing buckles (2012) are provided in two, the two fixing buckles (2012) being symmetrically provided about a center line of the lens holder (201);
the central line of the movable buckle (2014) is superposed with the central line of the lens supporting seat (201).
9. The display device according to claim 8, wherein the pressing ring (202) comprises a pressing ring body (2021) and at least two positioning portions (2022) mounted at one end of the pressing ring body (2021) and capable of being matched and clamped with the positioning holes (2011 a) for pressing against lenses;
the cross section of the positioning part (2022) is L-shaped.
10. The display apparatus according to claim 9, wherein the display screen containing unit (3) comprises a mounting groove (301) for mounting a display screen;
the bulge (302) is positioned on the back surface of the mounting groove (301) and corresponds to the limiting plate (102);
the guide rails (303) are positioned at two ends of the display screen containing unit (3) and are connected with the guide grooves (103) in a one-to-one correspondence manner; and
the mounting ears (304) are positioned at two ends of the display screen containing unit (3) and are positioned between the two guide rails (303);
the guide rail (303) has a threaded hole.
11. The display device according to claim 10, wherein the mounting ear (304) comprises a threaded through hole (3041) for connecting the adjustment portion (4032) of the adjustment lever (403);
and a hole (3042) for fixedly connecting the adjusting boss (402).
12. The display device according to claim 11, wherein the housing (1) is provided in a rectangular parallelepiped shape as a whole, and the stopper plate (102) and the projection (302) are provided adjacent to four corners of the housing (1) in correspondence with each other.
13. The display device as claimed in claim 12, wherein the stopper plate (102) and the protrusion (302) have spring holes (1021, 3021), and a return spring is disposed between the spring holes (1021) and (3021).
14. The display device according to claim 13, further comprising a positioning member (5) threadedly coupled to the threaded hole of the guide rail (303) and reciprocally movable in the slide rail (1031).
15. Display device according to one of claims 1 to 14, characterised in that the end of the housing (1) close to the adjustment lever (403) is provided with a pull ring (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710564929.0A CN107121779B (en) | 2017-07-12 | 2017-07-12 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710564929.0A CN107121779B (en) | 2017-07-12 | 2017-07-12 | Display device |
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| CN107121779A (en) | 2017-09-01 |
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