CN113109985B - Lens adjusting device and projector - Google Patents
Lens adjusting device and projector Download PDFInfo
- Publication number
- CN113109985B CN113109985B CN202010023438.7A CN202010023438A CN113109985B CN 113109985 B CN113109985 B CN 113109985B CN 202010023438 A CN202010023438 A CN 202010023438A CN 113109985 B CN113109985 B CN 113109985B
- Authority
- CN
- China
- Prior art keywords
- fixing frame
- screw
- lens
- optical lens
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
Abstract
The invention provides a lens adjusting device and a projector, the lens adjusting device comprises: a base; the fixing frame is arranged in the base; the optical lens is fixed in the fixing frame; the transmission part is used for pushing the fixing frame; the first screw penetrates through the base; the first screw is adjusted to move along a first direction, the first screw pushes the transmission part, the transmission part pushes the fixing frame along a second direction, the fixing frame drives the optical lens to move along the second direction, and the first direction is perpendicular to the second direction. The lens adjusting device has the advantages of small number of used elements, simple assembly and easy operation.
Description
Technical Field
The invention relates to the field of lenses, in particular to a lens adjusting device and a projector.
Background
The optical lens is positioned in the projector system through machine components, and the complete optical path system is constructed through the assembly of the machine components. The manufacturing tolerance of the mechanism parts and the assembly tolerance between the mechanism parts can influence the optical path deviation of the optical path system. Therefore, the problem of optical path deviation caused by the tolerance can be compensated by adjusting the optical lens in the lens.
The existing adjusting mode comprises unilateral bidirectional adjustment and ipsilateral bidirectional adjustment, wherein the unilateral bidirectional adjusting mode requires the requirements on two side spaces to achieve a bidirectional adjusting function, and increases the requirements on adjusting the space and has high difficulty in adjusting action; and the homonymy bidirectional adjustment mode needs to use the adjusting screw structure for the space that whole camera lens adjusting device occupied is great, is unfavorable for the spatial configuration of other parts, increases the equipment degree of difficulty.
In view of the above, a new lens adjusting apparatus is needed to overcome the above problems.
Disclosure of Invention
The invention aims to solve the problems of large occupied space, inconvenience in adjustment and the like of the conventional lens adjusting device.
In view of the above, the present invention provides a lens adjusting apparatus, which includes:
a base;
the fixing frame is arranged in the base;
the optical lens is fixed in the fixing frame;
the transmission part is used for pushing the fixing frame; and
the first screw penetrates through the base;
when the first screw is adjusted to move along a first direction, the first screw pushes the transmission part, the transmission part pushes the fixing frame along a second direction, the fixing frame drives the optical lens to move along the second direction, and the first direction is perpendicular to the second direction.
Preferably, the transmission portion includes a guide surface, and the guide surface is a convex arc-shaped curved surface or a guide inclined surface.
Preferably, the transmission part is a first lug part extending from the fixing frame; or the transmission part is an arc-shaped elastic sheet arranged on one side of the fixing frame.
Preferably, the transmission portion is an arc-shaped elastic piece, the arc-shaped elastic piece includes a first portion and a second portion, wherein when the first screw is adjusted to move along the first direction, the first screw pushes against the first portion, the first portion moves along the second direction, so that the second portion pushes against the fixing frame along the second direction, and the fixing frame drives the optical lens to move along the second direction.
Preferably, the arc-shaped elastic sheet further comprises a third part, the third part bridges the first part and the second part, wherein the first part is in a bent sheet structure; the structure of the second part is an arc-shaped plate structure; the structure of the third part is a horizontal plate structure.
Preferably, the fixing frame further includes a second ear and a first elastic member, the first elastic member is disposed between the second ear and the second sidewall of the base, wherein the first elastic member elastically pushes against an outer side of the second ear.
Preferably, the device further comprises a second screw and a second elastic piece; the fixing frame also comprises fixing lug parts; the second elastic piece is arranged between the fixed lug part and the end face of the first bottom plate of the base; the second screw penetrates through the fixing lug part and fixes the fixing lug part on the end face, wherein when the second screw is adjusted to move along the first direction, a screw cap of the second screw presses against the fixing lug part, the fixing lug part moves along the first direction, and the fixing frame drives the optical lens to move along the first direction.
Preferably, the device further comprises a third screw, wherein the third screw is arranged in the base in a penetrating manner; the fixing frame also comprises an adjusting bulge; when the third screw is adjusted to move along the first direction, the third screw pushes against the adjusting protrusion, the adjusting protrusion moves along the first direction, and the fixing frame drives the optical lens to move along the first direction.
Preferably, the fixing frame further comprises a plurality of hooks, and the plurality of hooks are engaged with the edge of the optical lens.
Based on the above object, the present invention further provides a projector, which includes the lens adjustment apparatus described in any one of the above embodiments.
Compared with the prior art, the lens adjusting device provided by the invention has the advantages that the adjustment of the optical lens in the vertical direction and the horizontal direction is realized only through the interaction among the screw, the transmission part and the fixing frame, and the adoption of an additional switching or steering mechanism is avoided, so that the lens adjusting device has the advantages of small number of used elements, simplicity in assembly and easiness in operation.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 is a schematic view of a lens adjustment apparatus according to a first embodiment of the invention.
Fig. 2 is an enlarged schematic view of the dotted line region in fig. 1.
Fig. 3 is an exploded view of the lens adjusting apparatus in fig. 1.
Fig. 4 is a schematic view of a lens adjustment apparatus according to a second embodiment of the invention.
Fig. 5 is a schematic view of another angle of view of a lens adjustment apparatus according to a second embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a lens adjusting device which is suitable for adjusting the position of an optical lens in a device provided with the optical lens, in particular adjusting the position of the optical lens in a two-dimensional direction.
The lens adjusting device comprises a base, a fixing frame, an optical lens, a transmission part and a first screw, wherein the fixing frame is arranged in the base, the optical lens is fixed in the fixing frame, the first screw penetrates through the base, when the first screw is adjusted to enable the first screw to move along a first direction, the first screw pushes the transmission part, the transmission part pushes the fixing frame along a second direction, the fixing frame drives the optical lens to move along the second direction, and the first direction is perpendicular to the second direction.
The transmission part and the fixing frame can be of an integrated structure, and the transmission part and the fixing frame can also be of a split structure. When the structure is an integrated structure, the transmission part is, for example, an ear part or an oblique block extending from the fixing frame; when the structure is a split structure, the transmission part is, for example, an arc-shaped elastic sheet arranged on one side of the fixing frame.
Wherein, above-mentioned "ear", "sloping block" and "arc shell fragment" all include the guide surface, first screw and guide surface interact, and the effort of the first direction that first screw was exerted on transmission portion is converted into the effort of second direction, and then realizes that first screw pushes away along first direction and supports transmission portion, and transmission portion removes along the second direction for the mount drives optical lens and removes along the second direction.
The lens adjusting device will be described below by using specific embodiments, and particularly, the mutual cooperation between the transmission part, the fixing frame and the first screw will be described in detail to more clearly understand the inventive concept of the present invention.
FIG. 1 is a schematic view of a lens adjustment apparatus according to a first embodiment of the present invention; FIG. 2 is an enlarged schematic view of the dashed area of FIG. 1; fig. 3 is an exploded view of the lens adjusting apparatus in fig. 1.
As shown in fig. 1 to 3, the lens adjusting apparatus 10 includes a base 11, a fixing frame 12, an optical lens 13, a transmission portion 122 and a first screw 14, wherein the base 11 includes an accommodating cavity 114; the optical lens 13 is accommodated in the accommodating cavity 114, and the optical lens 13 is fixed by the fixing frame 11; the transmission portion 122 includes a guide surface 1221; a first screw 14 is arranged in the base 11 in a penetrating manner; the first screw 14 is adjusted to move along the first direction, the first screw 14 pushes against the guiding surface 1221 of the transmission part 122, so that the transmission part 122 moves towards the second direction, the transmission part 122 drives the fixing frame 12 and the optical lens 13 to move along the second direction, and the first direction is perpendicular to the second direction.
In this embodiment, the transmission portion 122 is, for example, a first ear portion extending from the fixing frame 12, the first ear portion is located between the optical lens 13 and the first sidewall 112 of the base 11, and preferably, the first ear portion is integrally formed with the fixing frame 12.
The guide surface 1221 of the transmission part 122 is, for example, a convex arc curved surface; when the first screw 14 is adjusted to move along the first direction, the first end 141 of the first screw 14 pushes against the convex arc-shaped curved surface, which is equivalent to the first screw 14 applying a force in the first direction to the transmission portion 122 (the first ear portion of the fixing frame 12). Because the surface of the first screw 14 that pushes against the first end 141 is the convex arc-shaped curved surface, the first screw 14 slides along the convex arc-shaped curved surface, and simultaneously presses the convex arc-shaped curved surface, so that the transmission portion 122 moves toward the second direction, and the fixing frame 12 drives the optical lens 13 to move toward the second direction.
The process of matching the transmission portion 122 and the first screw 14 is described above by taking the transmission portion 122 as the first ear portion extending from the fixing frame 12 as an example. It should be noted that, in other embodiments of the present invention, the transmission portion may also be an inclined block disposed on the fixing frame, the inclined block protrudes toward the first screw, the first screw is adjusted to move along the first direction, the first screw pushes against the guiding inclined surface on the inclined block and slides along the guiding inclined surface, and the inclined block is pressed to move along the second direction, so that the fixing frame and the optical lens move along the second direction together. The inclined block can be integrated with the fixing frame, or the inclined block and the fixing frame can be separated. When the slanting block and the fixing frame are separated, the slanting block is pushed and extruded by the first screw and pushed against the fixing frame along the second direction, so that the fixing frame drives the optical lens to move along the second direction.
In this embodiment, the first direction is, for example, a vertical direction, and the second direction is, for example, a horizontal direction.
Referring to the lens adjusting apparatus 10 shown in fig. 1, the vertical direction corresponds to the Y direction, and the horizontal direction corresponds to the X direction. However, the horizontal direction may correspond to the Y direction and the vertical direction may correspond to the X direction during actual use of the lens adjustment device 10. In the lens adjusting device 10 of the present invention, the optical lens 13 is driven by the fixing frame 12 on a plane perpendicular to the light emitting direction of the optical lens 13, wherein the light emitting direction of the optical lens 13 is a direction perpendicular to the XY plane (not shown), so as to perform two-dimensional direction adjustment.
In addition, the above-mentioned "adjusting the first screw 14 along the first direction" means to adjust the first screw 14 to be screwed in and/or out on the base 11 along the vertical direction for a plurality of times, so as to change the depth of the first end 141 of the first screw 14 extending into the accommodating cavity 114. The first screw 14 is screwed on the base 11, that is, the first screw 14 is matched with the threaded hole on the base 11 and moves towards the accommodating cavity 114 (or, the first screw 14 moves vertically downwards relative to the base 11); the first screw 14 is screwed out of the base 11, that is, the first screw 14 is engaged with the threaded hole of the base 11 and moves away from the receiving cavity 114 (or the first screw 14 moves vertically upward relative to the base 11).
Continuing with the lens adjusting apparatus 10 shown in fig. 1 as a reference, when the first screw 14 is adjusted to move vertically downward relative to the base 11, the first end portion 141 of the first screw 14 pushes against the first ear portion 122, and meanwhile, the first end portion 141 slides along the guiding surface 1221 (convex arc curved surface), the first screw 14 slides to the left side of the guiding surface 1221, the first ear portion 122 is pressed to move to the right side, and the fixing frame 12 drives the optical lens 13 to move horizontally rightward; when the first screw 14 is adjusted to move vertically upward relative to the base 11, the first screw 14 gradually does not abut against the most protruding position of the guiding surface 1221, and as the first end 141 of the first screw 14 moves higher than the most protruding position, the first ear 122 moves horizontally to the left, and the fixing frame 12 drives the optical lens 13 to move horizontally to the left. That is, the first screw 14 is screwed in or out on the base 11, the first screw 14 is vertically upward or vertically downward, and the fixing frame 12 drives the optical lens 13 to move to the right or left, so as to adjust the position of the optical lens 13 in the horizontal direction.
The fastening frame 12 further comprises a second ear portion 123, and a first elastic element 16 is disposed between the second ear portion 123 and the base 11, and the first elastic element 16 elastically abuts against an outer side 1231 of the second ear portion 123 and an inner wall 1131 of the second side wall 113 of the base 11. When the first screw 14 pushes against the transmission portion 122, the first elastic member 16 provides an elastic force, so that the two always abut against each other. The first screw 14 always abuts against the transmission portion 122, so that the fixing frame 12 is limited in the horizontal direction and does not shake in the accommodating cavity 114, thereby improving the stability of the lens adjusting device 10. The direction of the elastic force is opposite to the second direction, and the second direction is horizontal to the right and the direction of the elastic force is horizontal to the left with reference to the lens adjusting device 10 shown in fig. 1.
In addition, referring to the lens adjusting apparatus 10 shown in fig. 1, when the first screw 14 does not abut against the most protruding position of the guiding surface 1221, the elastic force provided by the first elastic member 16 can push the second ear portion 123 to move horizontally to the left, and the fixing frame 12 drives the optical lens 13 to move horizontally to the left.
As shown in fig. 3, the base 11 includes a first bottom plate 111, and a first sidewall 112 and a second sidewall 113 extending from two opposite sides of the first bottom plate 111, and a space between the first bottom plate 111, the first sidewall 112 and the second sidewall 113 forms the accommodating cavity 114. One end of the first sidewall 112 extends out of the cantilever portion 1121, and the first screw 14 is inserted into a threaded hole of the cantilever portion 1121 and screwed into or out of the threaded hole. Preferably, the cantilever 1121 is perpendicular to the first sidewall 112.
In addition, the cantilever portion 1121 is disposed close to the first ear 122, so that the problem of low adjustment efficiency caused by an excessively long first screw 14 screwed into or screwed out of the threaded hole can be avoided.
The fixing frame 12 is interposed between the base 11 and the optical lens 13. The fixing frame 12 includes a second base plate 124, a plurality of hooks 121, a transmission portion 122, a second ear portion 123 and a fixing ear portion 125 extend from an edge of the second base plate 124, and the plurality of hooks 121, the transmission portion 122 and the second ear portion 123 extend from the edge of the second base plate 124 toward the optical lens 13 respectively; the fixing ears 125 extend from the edge of the second bottom plate 124 toward the base 11.
Fixing lug 125 is provided with fixing hole 1251, end 1111 of first base plate 111 of base 11 is provided with another screw hole, and second screw 15 passes through fixing hole 1251 and another screw hole of fixing lug 125 in order to fix fixing frame 12 on base 11. Preferably, the fixing holes 1251 are runway holes, which provide a space for the movement of the fixing frame 12 in the horizontal direction.
Further, a second elastic member 17 is disposed between the fixing ear 125 and the end surface 1111 of the first base plate 111, and the second elastic member 17 elastically pushes the fixing ear 125 and the end surface 1111 of the first base plate 111. The second screw 15 is adjusted to move along the first direction, the nut of the second screw 15 presses against the fixing lug 125, and the fixing lug 125 compresses the second elastic element 17 and moves along the first direction, so that the fixing frame 12 drives the optical lens 13 to move along the first direction.
The mounting ears 125 are integrally formed with the second base plate 124 of the holder 12.
Referring to the lens adjusting apparatus 10 shown in fig. 1, when the second screw 15 is screwed into the base 11 in the vertical direction, the second screw 15 moves vertically downward, the nut of the second screw 15 exerts a vertically downward force on the fixing lug 125, the fixing lug 125 compresses the second elastic member 17 and moves vertically downward, and the fixing frame 12 drives the optical lens 13 to move vertically downward; when the second screw 15 is screwed out relative to the base 11, the second elastic element 17 provides an elastic force to push the fixing lug 125 to move vertically upward, and the fixing frame 12 drives the optical lens 13 to move vertically upward together. In summary, the second elastic element 17 is disposed between the fixing ear 125 and the end surface 1111 of the first bottom plate 111 of the base 11, and when the second adjusting screw 17 moves along the vertical direction, the fixing frame 12 drives the adjusting optical lens 13 to move in the vertical direction for position adjustment.
In this embodiment, adjusting the second screw 15 to screw in and/or screw out along the vertical direction on the base 11 substantially changes the depth of the second screw 15 extending into the threaded hole on the end surface 1111 of the first base plate 111.
As shown in fig. 1, the fixing frame 12 is accommodated in the accommodating cavity 114, and the front end of the transmission portion 122 and the front end of the second ear portion 123 are respectively clamped on the first side wall 112 and the second side wall 113. The transmission portion 122 and the second ear 123 are substantially L-shaped. The transmission portion 122 and the second ear portion 123 are symmetrically disposed on the edge of the second bottom plate 124 by taking the fixing ear portion 125 as a center.
As shown in fig. 1 and fig. 3, the number of the plurality of hooks 121 is three, the three hooks 121 are uniformly arranged along the circumferential direction of the second base plate 124, and the three hooks 121 clamp the optical lens 13 together to fix the optical lens 13 by the fixing frame 12. The space defined by the three hooks 121 and the second base plate 124 can be regarded as the receiving space 1241 of the optical lens 13.
In addition, the process of assembling the optical lens 13 to the mount 12 includes: first, at least one of the three hooks 121 is pulled outward; next, the optical lens 13 is placed in the accommodation space 1241; finally, the opened hooks 121 are released, and the hooks 121 are folded inward to hold the edge of the optical lens 13, so that the optical lens 13 is stably fixed.
In a preferred embodiment, the material of the fixing frame 12 can be selected from a metal plate or plastic, i.e., the fixing frame 12 needs to have a certain rigidity, including bearing the force applied by the first screw 14 and the second screw 15, and carrying the optical lens 13, and also needs to have a certain flexibility, including being deformed properly to hold the base 11 and the optical lens 13.
As can be seen from the above, referring to the lens adjusting device 10 shown in fig. 1 and fig. 3, the first screw 14 is screwed in and/or out, the first screw 14 applies a vertical force to the transmission portion 122, the first screw 14 pushes and slides along the guiding surface 1221 of the transmission portion 122, the transmission portion 122 moves along the horizontal direction, and the fixing frame 12 drives the optical lens 13 to move in the horizontal direction, so as to adjust the position of the optical lens 13 in the horizontal direction. In addition, a first elastic element 16 is disposed between the second ear portion 123 of the fixing frame 12 and the base 11, and provides an elastic force to make the first screw 14 always abut against the transmission portion 122, and at the same time, the second ear portion 123 moves along the horizontal direction, so that the fixing frame 12 drives the optical lens 13 to move in the horizontal direction. In addition, the second screw 15 is screwed in and/or out, the nut of the second screw 15 applies a vertical acting force to the fixing lug 125 or the second elastic member 17 provides a vertical acting force to the fixing lug 125, the fixing lug 125 moves in the vertical direction, and the fixing frame 12 drives the optical lens 13 to move in the vertical direction, so that the position of the optical lens 13 in the vertical direction is adjusted.
In this embodiment, the first elastic member 16 and the second elastic member 17 are coil springs, respectively.
In the lens adjusting device 10, the fixing frame 12 is matched with the adjusting screws (the first screw 14 and the second screw 15) to adjust the optical lens 13 in the vertical direction and the horizontal direction, and an additional switching or steering mechanism is avoided, so that the lens adjusting device has the advantages of being few in used elements, simple in assembly and easy to operate. In addition, the optical lens 13 and the fixing frame 12 are fixed by the hook 121, so that the fixing by glue, screw locking and the like is avoided.
FIG. 4 is a diagram illustrating a lens adjustment apparatus according to a second embodiment of the present invention; fig. 5 is a schematic view illustrating another angle of view of a lens adjustment apparatus according to a second embodiment of the present invention.
As shown in fig. 4 and 5, the lens adjusting device 20 can drive the optical lens 23 to adjust the position in the vertical direction and the horizontal direction through the fixing frame 22, and the main difference between the lens adjusting device 20 and the lens adjusting device 10 (shown in fig. 1 to 3) is that the fixing frame 22 and the transmission portion 24 in the lens adjusting device 20 are of a split structure.
The lens adjusting device 20 includes a base 21, a fixing frame 22, an optical lens 23, a transmission portion 24 and a first screw 25, wherein the base 21 has an accommodating cavity 211; the optical lens 23 is accommodated in the accommodating cavity 211; the optical lens 23 is fixed by the fixing frame 22; the transmission part 24 is positioned in the accommodating cavity 211; the first screw 25 is arranged in the base 21 in a penetrating way; the first screw 25 is adjusted to move along a first direction, the first screw 25 pushes the transmission portion 24, the transmission portion 24 pushes the fixing frame 22 along a second direction, so that the fixing frame 22 drives the optical lens 23 to move along the second direction, and the first direction is perpendicular to the second direction.
Referring to the lens adjusting apparatus 20 shown in fig. 4 and 5, the first direction is, for example, a vertical direction (corresponding to the Y direction), and the second direction is, for example, a horizontal direction (corresponding to the X direction).
In this embodiment, the transmission portion 24 is, for example, an arc-shaped elastic sheet, and the arc-shaped elastic sheet is accommodated in the accommodating cavity 211 and located at one side of the optical lens 23. The arc-shaped elastic piece comprises a first portion 241 and a second portion 242, the first screw 25 pushes against the first portion 241, and the second portion 242 elastically pushes against one side of the fixing frame 22.
The first portion 241 includes a guiding surface 2411, the guiding surface 2411 is, for example, a convex arc-shaped curved surface, the first screw 25 is adjusted to move along the first direction, the first end 251 of the first screw 25 pushes against the convex arc-shaped curved surface, slides along the convex arc-shaped curved surface while pressing the convex arc-shaped curved surface, the first portion 241 moves towards the second direction, and the second portion 242 pushes the fixing frame 22 along the second direction, so that the fixing frame 22 drives the optical lens 23 to move along the second direction.
In this embodiment, the first portion 241 of the transmission portion 24 is matched with the first screw 25, the first direction acting force applied on the first portion 241 by the first screw 25 is converted into the second direction acting force, the second portion 242 of the transmission portion 24 can transmit the second direction acting force to the fixing frame 22, and the fixing frame 22 drives the optical lens 23 to move along the second direction.
As shown in fig. 5, a third portion 243 is disposed between the first portion 241 and the second portion 242 of the transmission portion 24, and the third portion 243 bridges the first portion 241 and the second portion 242, wherein the first portion 241 has a bent plate structure, the second portion 242 has an arc-shaped plate structure, and the third portion 243 has a horizontal plate structure. Or one end of the horizontal plate structure is bent to form a bent plate structure, and the other end of the horizontal plate structure opposite to the bent plate structure extends out of the arc-shaped plate structure. Preferably, the bent plate structure and the horizontal plate structure are both located on the same side of the horizontal plate structure.
In addition, the other end 244 of the second portion 242, remote from the first portion 241, is secured to the base 11.
In a preferred embodiment, the material of the transmission portion 24 is selected from a metal plate or a plastic, for example, and has both rigidity and flexibility. The first portion 241, the second portion 242, and the third portion 243 are integrally formed to form the transmission portion 24.
As shown in fig. 5, when the first screw 25 is adjusted to move toward the first part 241 in the first direction, the first end 251 of the first screw 25 first contacts the junction between the first part 241 and the third part 243 and gradually moves toward the first part 241 as the first end 251 moves downward. The first direction force applied by the first screw 25 is gradually converted into the second direction force as the first end 251 slides along the outwardly convex curved surface and toward the maximum protruding position of the outwardly convex curved surface.
The lens adjusting device 20 further includes a third screw 26, and the third screw 26 is inserted into the base 21; the fixing frame 22 further includes an adjusting protrusion 221 corresponding to the third screw 26; the third screw 26 is adjusted to move along the first direction, the third adjusting screw 26 pushes against the adjusting protrusion 221, and the adjusting protrusion 221 moves along the first direction, so that the fixing frame 22 drives the optical lens 23 to move along the first direction.
In this embodiment, the second end 261 of the third screw 26 abuts against a top surface of the adjusting protrusion 221, which is, for example, a plane, but not limited thereto. In other embodiments of the present invention, the top surface may also be a concave curved surface, and the second end portion abuts against the bottom of the concave curved surface.
The fixing frame 22 further comprises a first resilient protrusion 222 and a second resilient protrusion 223, the first resilient protrusion 222 corresponding to the second portion 242 of the transmission portion 24; the second rebound projection 223 corresponds to the regulation projection 221. In a preferred embodiment, the first resilient protrusion 222 and the second resilient protrusion 223 are, for example, but not limited to, metal elastic sheets formed on the fixing frame 22. In other embodiments of the present invention, the first resilient protrusion and the second resilient protrusion may also be springs fixed on the periphery of the bottom plate of the fixing frame.
Referring to the lens adjusting apparatus 20 shown in fig. 5, when the first screw 25 is adjusted to move along a first direction (vertically downward), the first screw 25 pushes against the guiding surface 2441 of the first portion 241 of the transmission portion 24, and the second portion 242 of the transmission portion 24 pushes against the fixing frame 22 to move along a second direction (horizontally leftward) to drive the optical lens 23, the first resilient protrusion 222 abuts against the inner side 212 of the base 21, and the first resilient protrusion 222 provides an opposite force (horizontally rightward force) to make the fixing frame 22 drive the optical lens 23 to move toward an opposite direction (horizontally rightward). Similarly, the second screw 26 is adjusted to move in a first direction (vertically downward), the second screw 26 pushes against the adjusting protrusion 221, so that the fixing frame 22 drives the optical lens 23 to move in the first direction (vertically downward), the second resilient protrusion 223 abuts against the inner side 212 of the base 21, and the second resilient protrusion 223 provides an opposite force (vertically upward) so that the fixing frame 22 drives the optical lens 23 to move in an opposite direction (vertically upward). The first resilient protrusions 222 and the second resilient protrusions 223 cooperate with the inner side 212 of the base 21 to provide opposite forces, so that the fixing frame 22 drives the optical lens 23 to adjust in opposite directions.
It should be noted that the adjustment manners of the first screw 25 and the third screw 26 in the lens adjustment apparatus 20 are both screwed in and/or out relative to the base 21 by matching with the threaded hole on the base 21, and for the specific description, reference may be made to the related description of the adjustment manner of the first screw 14 in the lens adjustment apparatus 10 of the first embodiment, which is not repeated herein.
In this embodiment, the optical lens 23 is sandwiched between the fixing frame 22 and the base 21. The fixing frame 22 is provided with a plurality of hooks (not shown), the plurality of hooks extend from the periphery of the bottom plate of the fixing frame 22 toward the optical lens 23, and the plurality of hooks are used for clamping the optical lens 23 together, so that the fixing frame 22 fixes the optical lens 23. The arrangement of the plurality of hooks and the assembly of the optical lens 23 can be referred to the related description of the fixing frame 12 of the lens adjusting device 10 of the present invention.
In addition, a plurality of locking holes 224 extend from the fixing frame 22, and screws pass through the locking holes 224 to lock the fixing frame 22 in the accommodating cavity 211 of the base 21.
In a preferred embodiment, the material of the fixing frame 22 can be selected from a metal plate or a plastic, i.e., the fixing frame 22 needs to have a certain rigidity, including a certain force applied by the third screw 26, and a certain flexibility, including a proper deformation, to hold the optical lens 23.
As can be seen from the above, in the lens adjusting device 20 provided in the second embodiment of the present invention, the first screw 25 pushes the first portion 241 of the transmission portion 24 along the first direction, so that the second portion 242 of the transmission portion 24 pushes the fixing frame 22 along the second direction, and the fixing frame 22 drives the optical lens 21 to move along the second direction; the third screw 26 pushes against the adjusting protrusion 221 on the fixing frame 22 along the first direction, and the fixing frame 22 drives the optical lens 23 to move along the first direction. That is, the lens adjusting device 20 realizes the two-dimensional adjustment of the optical lens 23 only by the mutual cooperation between the two screws, the transmission part and the fixing frame. Because the screw, the transmission part and the fixing frame are all assembled on the base, the occupied space is very small, and the effect of quick assembly and disassembly can be achieved.
The invention also provides a projector which comprises the lens adjusting device 10 or the lens adjusting device 20.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (9)
1. A lens adjustment apparatus, comprising:
a base;
the fixing frame is movably arranged in the base;
the optical lens is fixed in the fixing frame;
the transmission part is used for pushing the fixing frame and comprises a guide surface which is an outward-convex arc-shaped curved surface or a guide inclined surface; and
the first screw penetrates through the base and is used for pushing the transmission part relative to the base;
when the first screw is adjusted to move along a first direction, the first screw pushes against the guide surface of the transmission part, the transmission part pushes against the fixing frame along a second direction, the fixing frame drives the optical lens to move along the second direction, and the first direction is perpendicular to the second direction.
2. The lens adjusting apparatus as claimed in claim 1, wherein the transmission portion is a first ear or a slanting block extending from the fixing frame, and the first ear or the slanting block has the guiding surface.
3. The lens adjusting apparatus as claimed in claim 2, wherein the transmission portion is a curved spring disposed at one side of the fixing frame, the curved spring includes a first portion and a second portion, the first portion includes the guiding surface, wherein when the first screw is adjusted to move along the first direction, the first screw pushes against the first portion, the first portion moves along the second direction, so that the second portion pushes against the fixing frame along the second direction, and the fixing frame drives the optical lens to move along the second direction.
4. The lens adjusting apparatus according to claim 3, wherein the arc-shaped elastic piece further comprises a third portion bridging the first portion and the second portion, wherein the first portion has a bent plate structure; the structure of the second part is an arc-shaped plate structure; the structure of the third part is a horizontal plate structure.
5. The lens adjusting apparatus as claimed in claim 1, wherein the fixing frame further includes a second ear and a first elastic member disposed between the second ear and the second sidewall of the base, wherein the first elastic member elastically pushes against an outer side of the second ear.
6. The lens adjusting apparatus according to claim 1, further comprising a second screw and a second elastic member; the fixing frame also comprises fixing lug parts; the second elastic piece is arranged between the fixed lug part and the end face of the first bottom plate of the base; the second screw penetrates through the fixing lug part and fixes the fixing lug part on the end face, wherein when the second screw is adjusted to move along the first direction, a screw cap of the second screw presses against the fixing lug part, the fixing lug part moves along the first direction, and the fixing frame drives the optical lens to move along the first direction.
7. The lens adjusting apparatus as claimed in claim 1, further comprising a third screw passing through the base; the fixing frame also comprises an adjusting bulge; when the third screw is adjusted to move along the first direction, the third screw pushes the adjusting protrusion, the adjusting protrusion moves along the first direction, and the fixing frame drives the optical lens to move along the first direction.
8. The lens adjusting apparatus as claimed in claim 1, wherein the fixing frame further comprises a plurality of hooks, and the plurality of hooks engage with the edge of the optical lens.
9. A projector comprising the lens adjustment apparatus according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010023438.7A CN113109985B (en) | 2020-01-09 | 2020-01-09 | Lens adjusting device and projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010023438.7A CN113109985B (en) | 2020-01-09 | 2020-01-09 | Lens adjusting device and projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113109985A CN113109985A (en) | 2021-07-13 |
| CN113109985B true CN113109985B (en) | 2022-07-22 |
Family
ID=76708625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010023438.7A Active CN113109985B (en) | 2020-01-09 | 2020-01-09 | Lens adjusting device and projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113109985B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201131207A (en) * | 2010-03-05 | 2011-09-16 | Delta Electronics Inc | Optical device |
| CN103716570A (en) * | 2013-11-12 | 2014-04-09 | 苏州佳世达光电有限公司 | Lens adjusting device and projector |
| CN105022133A (en) * | 2014-04-17 | 2015-11-04 | 中强光电股份有限公司 | Projection device, lens module, and position adjustment device applied to projection device and lens module |
| CN206178326U (en) * | 2016-11-15 | 2017-05-17 | 深圳市光峰光电技术有限公司 | Camera lens micromatic setting, camera lens adjustment module and projection equipment |
| CN206440871U (en) * | 2016-11-15 | 2017-08-25 | 深圳市光峰光电技术有限公司 | First lens adjusting mechanism, camera lens adjustment module and projector equipment |
| CN108072955A (en) * | 2016-11-15 | 2018-05-25 | 深圳市光峰光电技术有限公司 | Camera lens adjusts module and projector equipment |
| CN110012275A (en) * | 2019-04-03 | 2019-07-12 | 苏州佳世达光电有限公司 | Two-way eyeglass adjustment mould group and the projector using it |
-
2020
- 2020-01-09 CN CN202010023438.7A patent/CN113109985B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201131207A (en) * | 2010-03-05 | 2011-09-16 | Delta Electronics Inc | Optical device |
| CN103716570A (en) * | 2013-11-12 | 2014-04-09 | 苏州佳世达光电有限公司 | Lens adjusting device and projector |
| CN105022133A (en) * | 2014-04-17 | 2015-11-04 | 中强光电股份有限公司 | Projection device, lens module, and position adjustment device applied to projection device and lens module |
| CN206178326U (en) * | 2016-11-15 | 2017-05-17 | 深圳市光峰光电技术有限公司 | Camera lens micromatic setting, camera lens adjustment module and projection equipment |
| CN206440871U (en) * | 2016-11-15 | 2017-08-25 | 深圳市光峰光电技术有限公司 | First lens adjusting mechanism, camera lens adjustment module and projector equipment |
| CN108072955A (en) * | 2016-11-15 | 2018-05-25 | 深圳市光峰光电技术有限公司 | Camera lens adjusts module and projector equipment |
| CN110012275A (en) * | 2019-04-03 | 2019-07-12 | 苏州佳世达光电有限公司 | Two-way eyeglass adjustment mould group and the projector using it |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113109985A (en) | 2021-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108089276B (en) | Optical element adjusting assembly, light emitting module and projection equipment | |
| US10042139B2 (en) | Camera lens module | |
| EP3820136A1 (en) | Camera apparatus, sma driving device and manufacturing method, driving method and wiring method thereof | |
| WO2021239122A1 (en) | Filter holder and light shield | |
| US8172408B2 (en) | Lens position adjusting mechanism | |
| CN108306609B (en) | Jig and plate-like component assembling system having the same | |
| US20150247967A1 (en) | Display device | |
| CN113109985B (en) | Lens adjusting device and projector | |
| US9143666B2 (en) | Surveillance device capable of focusing | |
| US20070051810A1 (en) | Optical reading head of scanning apparatus | |
| US6966671B2 (en) | Adjusting apparatus for projection lamp | |
| US10359562B2 (en) | Light guide plate, backlight source and display device | |
| CN212623270U (en) | Lens adjustable mounting base and projector | |
| CN213149445U (en) | Adjustable optical module and projector | |
| CN110012275B (en) | Bidirectional lens adjusting module and projector using same | |
| CN113075841B (en) | Optical machine and projector | |
| CN108803206B (en) | Lens adjusting mechanism | |
| CN111812924B (en) | Lens module and projection equipment | |
| KR101595126B1 (en) | Focus unit fastening device for projectot | |
| CN213182288U (en) | Light path adjusting structure and projection equipment | |
| CN212391699U (en) | Fixed module, projection lens assembly and projector | |
| CN220455656U (en) | Projector with a light source for projecting light | |
| CN216956493U (en) | Lens driving mechanism | |
| CN218548273U (en) | Automatic reset focusing key structure for projector | |
| CN214375761U (en) | DMD subassembly, ray apparatus, projecting apparatus and 3D printer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |