CN205827036U - A kind of projection lens focussing mechanism - Google Patents
A kind of projection lens focussing mechanism Download PDFInfo
- Publication number
- CN205827036U CN205827036U CN201620744520.8U CN201620744520U CN205827036U CN 205827036 U CN205827036 U CN 205827036U CN 201620744520 U CN201620744520 U CN 201620744520U CN 205827036 U CN205827036 U CN 205827036U
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- lens group
- lens barrel
- group lens
- projection
- back segment
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- 238000013016 damping Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 230000033001 locomotion Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Lens Barrels (AREA)
Abstract
This utility model provides a kind of projection lens focussing mechanism, including: front lens group lens barrel, rear lens group lens barrel, outer sleeve, adjusting slider, regulation driving lever, limited post and lead with flange；It is provided with the first confined planes on described front lens group lens barrel；Shifting chute, the first spacing post holes, the first guiding post holes it is provided with on described rear lens group lens barrel；Oblique cannelure, the second spacing post holes, the second guiding post holes and the second confined planes it is provided with on described outer sleeve；This projection module focussing mechanism focusing mode simple in construction, focusing especially finely tune convenient and swift, the change with the relative position of rear foot lens set of the front focus lens group can be realized, to the picture resolution of diverse location more preferably, good stability, can focus fast and accurately, reach preferable drop shadow effect.
Description
Technical field
This utility model relates to digital projection Display Technique field, more particularly, it relates to a kind of projection lens focusing dress
Put.
Background technology
Along with the development of science and technology, the particularly promotion of semiconductor technology, portable electronic equipment is constantly set
Meter manufactures.The lifting of portable electric appts function so that user is to the requirement of the display device of man machine interface increasingly
Develop towards miniature, giant-screen and high-resolution direction.Under the promoting of users' tight demand, scialyscope skill in recent years
Art development is swift and violent, and the product such as DLP, LCOS is proposed that performance is high, size is little and lightweight portable scialyscope one after another.
In projection field, owing to using the difference of scene, the perspective plane that projector equipment and its projection picture are projected
Distance the most different；Typically to regulate the focal length of camera lens accordingly, the effect of focussing mechanism is used to compensate respectively
The out of focus that the factor of kind causes, can obtain apparent projected picture.Conventional projector focus adjustment method, is that focusing ring is enclosed within mirror
Head exposed junction, drives camera lens along the optical axis direction movable realization focusing of camera lens, this usual tune by rotating focusing ring
Burnt method operates the most efficient and convenient, is affected cannot be finely adjusted again by camera lens focusing stroke itself simultaneously.
Utility model content
For above-mentioned technical problem, the purpose of this utility model is to provide a kind of simple in construction, and focusing is especially finely tuned
Convenient and swift, good stability, the projection lens focussing mechanism that can focus fast and accurately.
For achieving the above object, this utility model provides and includes: front lens group lens barrel, rear lens group lens barrel, with method
Blue outer sleeve, adjusting slider, regulation driving lever, limited post and lead；It is provided with for limiting on described front lens group lens barrel
First confined planes of front lens group lens barrel axially-movable processed；It is provided with shifting chute, the first limited post on described rear lens group lens barrel
Hole, the first guiding post holes；Oblique cannelure, the second spacing post holes, the second guiding post holes and use it is provided with on described outer sleeve
In the second confined planes limiting rear lens group lens barrel axially-movable；Described limited post passes the first spacing post holes and the second limited post
Hole is fixing with front lens group lens barrel to be connected, and described lead is led a post holes and second through first and guided post holes and rear lens group mirror
Cylinder is fixing to be connected；Described adjusting slider is inserted shifting chute and can move along the circumferencial direction of shifting chute, and regulation driving lever is through described
Oblique cannelure on outer sleeve is fixing with adjusting slider to be connected.
Preferably, described front lens group lens barrel set is divided into leading portion (10a) and back segment (10b), leading portion (10a) and back segment
(10b) it is round tubular structure；The external diameter of described leading portion (10a) is more than the external diameter of back segment (10b)；Described first confined planes sets
Put on the joint face of leading portion (10a) and back segment (10b).
Preferably, leading portion (10a) and the back segment (10b) of described front lens group lens barrel set are one-body molded.
Preferably, the external diameter of described front lens group lens barrel back segment (10b) is slightly smaller than rear lens group lens barrel with front
The internal diameter of lens set lens barrel coupling part, the back segment (10b) of front lens group lens barrel is inserted in rear lens group
The inside of lens barrel, the back segment (10b) of front lens group lens barrel is connected for damping with rear lens group lens barrel.
Preferably, described second confined planes is arranged in the second spacing post holes on the end face of front lens group lens barrel.
Preferably, described rear lens group lens barrel set is divided into leading portion (20a) and back segment (20b), and described back segment (20b) arranges one
Projection anchor ring, is shifting chute between leading portion (20a) and projection anchor ring；The external diameter of leading portion (20a) is more than or equal to projection anchor ring S3
External diameter, the external diameter of projection anchor ring S3 is more than the external diameter of back segment (20b) other parts.
Preferably, leading portion (20a) and the back segment (20b) of described rear lens group lens barrel set are one-body molded.
Preferably, described adjusting slider is semicircular arc structure, can be tight with the shifting chute being arranged on rear lens group lens barrel
Closely connected conjunction.
Preferably, described shifting chute is semi-annular slot or cannelure.
Preferably, described regulation driving lever and adjusting slider are that screw thread links.
Compared with prior art, this utility model has the advantages that projection lens focussing mechanism includes: front lens
Group lens barrel, rear lens group lens barrel, outer sleeve, adjusting slider, regulation driving lever, limited post and lead；Described front lens group mirror
The first confined planes it is provided with on Tong；Shifting chute, the first spacing post holes, the first lead it is provided with on described rear lens group lens barrel
Hole；Oblique cannelure, the second spacing post holes, the second guiding post holes and the second confined planes it is provided with on described outer sleeve；This throwing
Shadow module focusing device focusing mode simple in construction, focusing especially finely tune convenient and swift, front focus lens group and the rear foot can be realized
The change of the relative position of lens set, to the picture resolution of diverse location more preferably, good stability, can regulate fast and accurately
Focal length, reaches preferable drop shadow effect.
Accompanying drawing explanation
Fig. 1 is a kind of projection lens focussing mechanism embodiment explosive view of the present utility model；
Fig. 2 is a kind of projection lens focussing mechanism embodiment combination assumption diagram of the present utility model；
Fig. 3 is a kind of projection lens focussing mechanism front lens group lens barrel schematic diagram of the present utility model；
Fig. 4 is a kind of projection lens focussing mechanism rear lens group lens barrel schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings, detailed description of the invention of the present utility model is described in detail, it is to be understood that this practicality
Novel protection domain is not limited by detailed description of the invention.
Explicitly indicating that unless otherwise other, otherwise in entire disclosure and claims, term " includes " or it becomes
Change and such as " comprising " or " including " etc. will be understood to comprise stated element or ingredient, and do not get rid of other
Element or other ingredient.
Fig. 1 is a kind of projection lens focussing mechanism embodiment explosive view of the present utility model；As it is shown in figure 1, this practicality is new
The projection lens focussing mechanism of type includes: front lens group lens barrel 10, rear lens group lens barrel 20, the outer sleeve 30 with flange, tune
Joint slide block 40, regulation driving lever 50, limited post 60 and lead 70；It is provided with on described front lens group lens barrel 10 before limiting
First confined planes S1 of lens set lens barrel axially-movable；It is provided with shifting chute 21, first spacing on described rear lens group lens barrel 20
Post holes 23, first guides post holes 22；It is provided with oblique cannelure the 31, second spacing post holes 33 on described outer sleeve 30, second leads
To post holes 32 and for limiting the second confined planes S2 of rear lens group lens barrel axially-movable.
Wherein, described first spacing post holes 23, the second spacing post holes 33, and second guide post holes 32 could be arranged to lead to
Hole；Described first guides post holes 22 is set to non through hole；Described oblique cannelure 31 is the groove penetrating outer sleeve 30.
Fig. 3 is a kind of projection lens focussing mechanism front lens group lens barrel schematic diagram of the present utility model；As it is shown on figure 3, institute
Stating front lens group lens barrel set 10 is divided into leading portion 10a and back segment 10b, leading portion 10a and back segment 10b to be round tubular structure, described
The external diameter of the leading portion 10a external diameter more than back segment 10b, leading portion 10a and back segment 10b can be one-body molded, it is also possible to by pasting, weldering
Connect or connector links into an integrated entity.
Fig. 4 is a kind of projection lens focussing mechanism rear lens group lens barrel schematic diagram of the present utility model；As shown in Figure 4, institute
Stating rear lens group lens barrel set 20 is divided into leading portion 20a and back segment 20b, described back segment 20b to arrange a projection anchor ring S3 circumferentially, front
It is provided with shifting chute 21 between section 20a and projection anchor ring S3；Shifting chute 21 is arranged along the radial circumference of rear lens group lens barrel 20, front
The external diameter of the section 20a external diameter more than or equal to projection anchor ring S3, the external diameter of projection anchor ring S3 is more than outside other parts of back segment 20b
Footpath；Leading portion 20a and back segment 20b can be one-body molded, it is also possible to is linked into an integrated entity by stickup or connector.Front lens group lens barrel
The external diameter of 10 back segment 10b is slightly smaller than rear lens group lens barrel 20 leading portion 20a internal diameter so that front lens group lens barrel set 10 and rear lens group
During lens barrel set 20 connection, the back segment 10b of front lens group lens barrel set 10 is inserted in the leading portion 20a of rear lens group lens barrel set 20.Before described
The back segment 10b of lens set lens barrel 10 is connected for damping with the leading portion 20a of rear lens group lens barrel 20, is provided with damping between the two
Oil.
Wherein, the external diameter of leading portion 20a is slightly smaller than the internal diameter of outer sleeve 30 so that rear lens group lens barrel set 20 can be nested into
In outer sleeve 30, form damping with outer sleeve 30 and be connected.
Described shifting chute 21 can also be the one section of groove arranged on rear lens group lens barrel set 20, is directly rear lens group mirror
Annular peripherally disposed on jacket casing 20 or partial annular grooves.The external diameter of groove part overlaps 20 less than rear lens group lens barrel
The external diameter of other parts.
Fig. 2 is a kind of projection lens focussing mechanism embodiment combination assumption diagram of the present utility model；As in figure 2 it is shown, it is described
When front lens group lens barrel 10, rear lens group lens barrel 20 and outer sleeve 30 three combine, first by after front lens group lens barrel set 10
Section 10b is inserted in the leading portion 20a of rear lens group lens barrel set 20, described adjusting slider 40 is inserted shifting chute 21 so that it is with setting
Shifting chute 21 on rear lens group lens barrel 20 back segment 20b fits tightly and can move along the circumferencial direction of shifting chute 21；Again will
It is outside that outer sleeve 30 is set to rear lens group lens barrel set 20.
Wherein, the position of the first spacing post holes 23 and the second spacing post holes 33 after combination, is made to overlap or partially overlap, the
One guides post holes 22 and second guides the position coincidence of post holes 32 or partially overlaps.After combination connects, described limited post 60 passes
First spacing post holes 23 and the second spacing post holes 33 are fixed with front lens group lens barrel 10 and are connected；Described lead 70 is led through first
Guide post holes 32 to post holes 22 and second to fix with rear lens group lens barrel 20 and be connected；Oblique cannelure 31 on described outer sleeve 30
Corresponding with the position of shifting chute 21, regulation driving lever 50 is through the oblique cannelure 31 on described outer sleeve 30 and adjusting slider 40
Fixing connection.
When projection lens focussing mechanism is focused, stir regulation driving lever 50 with hands so that regulation driving lever 50 drives to be adjusted
Joint slide block 40 is taken exercises along the oblique cannelure 31 of outer sleeve 30, and described motion can be analyzed to the movement along rear lens group lens barrel 20
The motion of the circumferencial direction of groove 21 and moving along a straight line before and after projection lens optical axis direction.Due to limited post 60 and lead
The effect of 70, the adjusting slider 40 reciprocating motion in oblique cannelure 31 can drive rear lens group lens barrel 20 at outer sleeve
Tandem motion is done vertically in 30.Simultaneously because adjusting slider 40 does circumferencial direction along the oblique cannelure 31 of outer sleeve 30
Motion, can increase shift length, it is achieved the fine setting of the tandem direction of motion relatively.
Rear lens group lens barrel set 20 with front lens group lens barrel 10 simultaneously along optical axis direction forward (i.e. towards front lens group mirror
The direction of cylinder 10) move along a straight line during, when the limited post 60 being attached on rear lens group lens barrel set 20 with on outer sleeve 30
The second confined planes S2 contact after, front lens group lens barrel 10 travels forward stopping, and rear lens group lens barrel 20 moves forward, from
And spacing between lens set reaches the purpose of focusing before and after changing in lens barrel；Rear lens group lens barrel 20 with front lens group mirror
During cylinder 10 moves along a straight line backward along optical axis direction, when on the front end in contact front lens group lens barrel 10 of outer sleeve 30 simultaneously
The first confined planes S1 after, make front lens group lens barrel 10 stop rearward movement, rear lens group lens barrel 20 continues rearward movement, thus
Before and after changing in lens barrel, spacing between lens set reaches the purpose of focusing.Due to front lens group lens barrel 10 and rear lens group lens barrel
Use damping oil to carry out damping between 20 to connect, in the case of axially not contacting any confined planes, front lens group lens barrel 10 with
Rear lens group lens barrel 20 keeps relative invariant position, moves together.
In the present embodiment, described adjusting slider 40 is semicircular arc structure, described shifting chute 21 be semi-annular slot or
Cannelure；Adjusting slider 40 can fit tightly with the shifting chute 21 being arranged on rear lens group lens barrel 20 back segment 20b, adjusting slider
40 can insert shifting chute 21 by modes such as embeddings so that it is can move along shifting chute 21 circumferencial direction in shifting chute 21；
Described regulation driving lever 50 links for screw thread with adjusting slider 40.
In the present embodiment, described fixing connection includes pasting, and welding or connector connect.
It should be noted that the spacing post holes on described rear lens group lens barrel 20 and/or outer sleeve 30 and guide post holes also
It is not restricted to the mode of embodiment, spacing post holes can be adjusted as required and guide position and the number of post holes.
In the present embodiment, for limiting the first confined planes S1 of front lens group lens barrel axially-movable and after limiting
Second confined planes S2 of lens set lens barrel axially-movable is not limited to use the concrete mode described in the present embodiment, it is also possible to by it
The confined planes that he is similar to realizes front lens group lens barrel and the restriction of rear lens group lens barrel axial-movement.Such as, can be front
On lens set lens barrel, spacing hole is set, the position of the close rear lens group lens barrel of spacing hole is arranged the first confined planes；Or
On the joint face of rear lens group lens barrel leading portion and back segment, the second confined planes S2 is set；Etc., as long as ensure that the spacing of setting
Face can be in order to limit front lens group lens barrel and the axially-movable within the specific limits of rear lens group lens barrel.
In sum, this projection module focussing mechanism focusing mode simple in construction, focusing especially finely tune convenient and swift, can
The change of focus lens group and the relative position of rear foot lens set before realizing, to the picture resolution of diverse location more preferably, stability
Good, can focus fast and accurately, reach preferable drop shadow effect.
The aforementioned description to specific illustrative embodiment of the present utility model illustrates that and the purpose of illustration.These
Describe and be not wishing to be defined to this utility model disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can carry out
A lot of changes and change.The purpose selected exemplary embodiment and describe is to explain certain principles of the present utility model
And reality application, so that those skilled in the art is capable of and utilizes various different example of the present utility model
Property embodiment and various different selection and change.Scope of the present utility model be intended to by claims and etc. similar shape
Formula is limited.
Claims (10)
1. a projection lens focussing mechanism, it is characterised in that including: front lens group lens barrel, rear lens group lens barrel, with flange
Outer sleeve, adjusting slider, regulation driving lever, limited post and lead；It is provided with for limiting on described front lens group lens barrel
First confined planes of front lens group lens barrel axially-movable；Be provided with on described rear lens group lens barrel shifting chute, the first spacing post holes,
First guides post holes；It is provided with oblique cannelure, the second spacing post holes on described outer sleeve, second guides post holes and for limiting
Second confined planes of rear lens group lens barrel axially-movable processed；
Described limited post is connected through the first spacing post holes and the second spacing post holes are fixing with front lens group lens barrel, described lead
Lead a post holes and second through first to guide post holes and rear lens group lens barrel and fix and be connected；Described adjusting slider inserts shifting chute also
Can move along the circumferencial direction of shifting chute, regulation driving lever is fixing even through the oblique cannelure on described outer sleeve and adjusting slider
Connect.
Projection lens focussing mechanism the most according to claim 1, it is characterised in that before described front lens group lens barrel set is divided into
Section (10a) and back segment (10b), leading portion (10a) and back segment (10b) are round tubular structure；The external diameter of described leading portion (10a) is big
External diameter in back segment (10b)；Described first confined planes is arranged on the joint face of leading portion (10a) and back segment (10b).
Projection lens focussing mechanism the most according to claim 2, it is characterised in that the leading portion of described front lens group lens barrel set
(10a) one-body molded with back segment (10b).
Projection lens focussing mechanism the most according to claim 2, it is characterised in that described front lens group lens barrel back segment
(10b) external diameter is slightly smaller than the internal diameter of rear lens group lens barrel and front lens group lens barrel coupling part, the back segment of front lens group lens barrel
(10b) being inserted in the inside of rear lens group lens barrel, the back segment (10b) of front lens group lens barrel is connected for damping with rear lens group lens barrel.
Projection lens focussing mechanism the most according to claim 1, it is characterised in that described second confined planes is arranged on second
In spacing post holes on the end face of front lens group lens barrel.
Projection lens focussing mechanism the most according to claim 1, it is characterised in that before described rear lens group lens barrel set is divided into
Section (20a) and back segment (20b), described back segment (20b) arranges a projection anchor ring, for mobile between leading portion (20a) and projection anchor ring
Groove；The external diameter of leading portion (20a) more than or equal to the external diameter of projection anchor ring S3, the external diameter of projection anchor ring S3 more than back segment (20b) its
The external diameter of his part.
Projection lens focussing mechanism the most according to claim 6, it is characterised in that the leading portion of described rear lens group lens barrel set
(20a) one-body molded with back segment (20b).
Projection lens focussing mechanism the most according to claim 1, it is characterised in that described adjusting slider is semicircular arc knot
Structure, can fit tightly with the shifting chute being arranged on rear lens group lens barrel.
Projection lens focussing mechanism the most according to claim 1, it is characterised in that described shifting chute be semi-annular slot or
Cannelure.
Projection lens focussing mechanism the most according to claim 1, it is characterised in that described regulation driving lever and adjusting slider
Link for screw thread.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620744520.8U CN205827036U (en) | 2016-07-15 | 2016-07-15 | A kind of projection lens focussing mechanism |
| PCT/CN2016/093427 WO2018010235A1 (en) | 2016-07-15 | 2016-08-05 | Focusing device for projection lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620744520.8U CN205827036U (en) | 2016-07-15 | 2016-07-15 | A kind of projection lens focussing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205827036U true CN205827036U (en) | 2016-12-21 |
Family
ID=57563245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620744520.8U Active CN205827036U (en) | 2016-07-15 | 2016-07-15 | A kind of projection lens focussing mechanism |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN205827036U (en) |
| WO (1) | WO2018010235A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420849A (en) * | 2017-06-19 | 2017-12-01 | 再兴电子(深圳)有限公司 | Fireworks projecting lamp |
| CN111308839A (en) * | 2020-03-16 | 2020-06-19 | 管凯迎 | Short-focus lens for projector |
| CN112305700A (en) * | 2019-07-29 | 2021-02-02 | 青岛海信激光显示股份有限公司 | Projection lens and laser projection device |
| CN113391512A (en) * | 2020-12-23 | 2021-09-14 | 深圳市安华光电技术有限公司 | Focusing mechanism of projector with automatic focusing function, lens and projector |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102120384B1 (en) * | 2018-08-31 | 2020-06-08 | 주식회사 엠티에스 | Line blind valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7460313B1 (en) * | 2007-05-22 | 2008-12-02 | Av Tech Corporation | Zoom lens structure |
| CN102998768A (en) * | 2011-09-09 | 2013-03-27 | 亚洲光学股份有限公司 | Lens module |
| CN204229108U (en) * | 2014-12-03 | 2015-03-25 | 深圳市安华光电技术有限公司 | A kind of projector lens focus control |
| JP2016122079A (en) * | 2014-12-25 | 2016-07-07 | キヤノン株式会社 | Lens barrel with shake correction function |
| CN205210392U (en) * | 2015-12-01 | 2016-05-04 | 河北汉光重工有限责任公司 | Accommodation degree structure of back -and -forth movement eyepiece |
-
2016
- 2016-07-15 CN CN201620744520.8U patent/CN205827036U/en active Active
- 2016-08-05 WO PCT/CN2016/093427 patent/WO2018010235A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420849A (en) * | 2017-06-19 | 2017-12-01 | 再兴电子(深圳)有限公司 | Fireworks projecting lamp |
| CN112305700A (en) * | 2019-07-29 | 2021-02-02 | 青岛海信激光显示股份有限公司 | Projection lens and laser projection device |
| CN112305700B (en) * | 2019-07-29 | 2022-09-09 | 青岛海信激光显示股份有限公司 | Projection lens and laser projection device |
| CN111308839A (en) * | 2020-03-16 | 2020-06-19 | 管凯迎 | Short-focus lens for projector |
| CN111308839B (en) * | 2020-03-16 | 2021-10-12 | 宿州青智网络科技有限公司 | Short-focus lens for projector |
| CN113391512A (en) * | 2020-12-23 | 2021-09-14 | 深圳市安华光电技术有限公司 | Focusing mechanism of projector with automatic focusing function, lens and projector |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018010235A1 (en) | 2018-01-18 |
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| C14 | Grant of patent or utility model | ||
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Effective date of registration: 20231226 Granted publication date: 20161221 |
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| PP01 | Preservation of patent right |