CN1235085C - Lens cap assembly - Google Patents
Lens cap assembly Download PDFInfo
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- CN1235085C CN1235085C CN02101651.8A CN02101651A CN1235085C CN 1235085 C CN1235085 C CN 1235085C CN 02101651 A CN02101651 A CN 02101651A CN 1235085 C CN1235085 C CN 1235085C
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- lens cap
- lens
- mirror plate
- order
- gear unit
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Abstract
The present invention relates to a lens cap assembly which is a projection opening for a user to open and close a projector. The lens cap assembly comprises a power switch, a lens cap, a transmission unit, a closing detection unit, an opening detection unit and a control unit, wherein the power switch, the transmission unit, the closing detection unit and the opening detection unit are all connected with the control unit; when a user turns on or turns off the power switch, the control unit drives the transmission unit to rotate so that the lens cap moves forward or turns back. When the lens cap touches the opening detection unit or the closing detection unit, the control unit drives the transmission unit to stop rotating so that the lens cap opens or closes the projection opening.
Description
Technical field
The present invention is about a kind of lens cap assembly, and particularly is available for users to ease of Use and opens or close the lens cap assembly of mirror plate to order about lens cap about a kind of.
Background technology
The modern often utilizes projector (Projector) to do bulletin, meeting and education and training, especially, as the user with projector with after computer connects, the user just can evolve to the multimedia computer bulletin by the plane projection of originally traditional dullness, be that the user can be projeced into the briefing material in the computer on the bigger plane or screen by projector, allow participant on the scene can be clear that briefing material, quite convenient.Wherein, projector must be by camera lens to be projected to the external world with briefing material, when if the camera lens surface is subjected to scratch or is stained with dust, projector will be smudgy by the image that camera lens throwed, so the user must keep the cleaning of camera lens and avoid extraneous dust to be stained with the surface that is distributed in camera lens.In addition, camera lens is can be designed to stretch a pattern inside and outside projector, and its structure is as follows with description of drawings.
Please refer to Figure 1A, it is depicted as camera lens and shrinks diagrammatic cross-section in projector.In Figure 1A, projector 102 comprises casing 104, camera lens 106 and lens cap 108 at least, the left end of projector 102 is to have housing side wall 104a and mirror plate 110, and mirror plate 110 is to be disposed among the housing side wall 104a, and camera lens 106 is to be disposed at casing 104 and to stretch out in outside the housing side wall 104a via mirror plate 110 in telescopic mode.In addition, the housing side wall 104a snapping that lens cap 108 is and mirror plate 110 is other makes lens cap 108 can cover mirror plate 110, avoids extraneous dust to enter in the casing 104 via mirror plate 110 and prevents that dust is stained with on the surface that is distributed in camera lens 106.
When user's desire is used projector 102, the user can pull away the direction of lens cap 108 along the arrow 150 of Figure 1A in housing side wall 104a earlier, then, the user can controls lens 106, makes camera lens 106 also along the direction elongation of the arrow 150 of Figure 1A and by mirror plate 110.Then, projector 102 can be projected to the external world by camera lens 106, and shown in Figure 1B, wherein, the camera lens that Figure 1B is depicted as Figure 1A extends the diagrammatic cross-section outside projector.Certainly, when if the user does not use projector 102, the user can shrink camera lens 106 in casing 104 along the direction of the arrow 160 of Figure 1B, then, the user is buckled in lens cap 108 the housing side wall 104a on mirror plate 110 sides again, make lens cap 108 cover mirror plate 110 again, and for example shown in Figure 1A.
It should be noted that when the user operates projector 102 and lens cap 108 is placed in one side of projector 102,, so, be easy to generate the phenomenon of losing lens cap 108, quite inconvenience because lens cap 108 is not to link together with casing 104.In addition, when user's desire plug lens cap 108, the user must help casing 104 earlier on the other hand, and then, another hand of user side can plug lens cap 108 smoothly on housing side wall 104a, quite trouble.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of lens cap assembly, allows the user open or during the powered-down switch, can order about lens cap closure or openness mirror plate, break away from the user with the design of the traditional lens cap of manual plug yoke, simple to operate and meet modern's demand.
According to purpose of the present invention, a kind of lens cap assembly is proposed, be configurable in projector and use mirror plate for user's folding projector, projector comprises casing and camera lens at least, and camera lens is to be disposed in the casing, in order to the projection image, and mirror plate is to be disposed in the casing and corresponding to camera lens, and lens cap assembly is to comprise power switch, lens cap, gear unit, detection closed cell, detect and open unit and control module.Wherein, power switch is to be disposed in the casing, uses for the user and opens or close and distinguish to produce according to this and open signal or closed signal, and lens cap is to be disposed in a movable manner on the inwall of casing, in order to this mirror plate of open and close.Gear unit is to be disposed on the inwall of casing and in order to order about lens cap to move, and detect closed cell is the one side that is disposed on the inwall of casing and is positioned at mirror plate, touch and produce according to this closed stop signal in order to what receive lens cap, and detecting and opening the unit is to be disposed on the inwall of casing, in order to receive touching and the stop signal of generation unlatching according to this of lens cap.Control module is to be disposed in the casing and to open the unit with power switch, gear unit, detection closed cell and detection to connect, and control module is to open signal, closed signal, closed stop signal and open stop signal in order to receive.
When user's desire during with the closed mirror plate of lens cap, the user can the powered-down switch, power switch will be exported closed signal to control module, and control module receives behind the closed signal and orders about gear unit and rotate, and make lens cap move along with the rotation of gear unit and advance; When lens cap approaches to detect closed cell, lens cap will touch the detection closed cell, detect closed cell and will export closed stop signal to control module, control module receives and will order about this gear unit behind the closed stop signal and stop operating, make lens cap stop to move to advance and close mirror plate, in order to keep the cleaning of camera lens.
When user's desire is opened mirror plate with lens cap, the user can the power-on switch, power switch will be exported and open signal to control module, and control module receives behind the unlatching signal and orders about gear unit and rotate, and make lens cap move along with the rotation of gear unit and retreat; When lens cap approaches to detect the unlatching unit, lens cap will touch to detect opens the unit, detect the unlatching unit and will export the unlatching stop signal to control module, control module receives to open and will order about gear unit behind the stop signal and stop operating, make lens cap stop to move and retreat and open mirror plate, the image that camera lens throwed can be by mirror plate to projector.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Figure 1A is depicted as camera lens and shrinks diagrammatic cross-section in projector.
The camera lens that Figure 1B is depicted as Figure 1A extends the diagrammatic cross-section outside projector.
Figure 2 shows that synoptic diagram according to the lens cap assembly of the preferred embodiments of the present invention.
Figure 3 shows that the lens cap of Fig. 2 closes the synoptic diagram of mirror plate.
The number in the figure explanation
102,202: projector
104,204: casing
104a: housing side wall
106,206: camera lens
108,208: lens cap
110,210: mirror plate
150,160,250,260,350,360: arrow
212: power switch
214: control module
216: gear unit
216a: teeth portion
218a: tooth-strip part
220a: detect and open the unit
220b: detect closed cell
222a, 222b: guide bar
224a, 224b, 226a, 226b: fixed leg
Embodiment
The special design of the present invention one lens cap assembly, use mirror plate for user's folding projector, lens cap assembly comprises power switch, lens cap, gear unit, detection closed cell, detects and open unit and control module, and power switch, gear unit, detection closed cell and detection are opened the unit and all connected with control module.
Wherein, when the user opens or the powered-down switch, control module will order about gear unit and rotate, and make lens cap move to advance or retreat.When lens cap touches detection unlatching unit or detects closed cell, control module will order about this gear unit and stop operating, and make lens cap open or close mirror plate.Practical application as for lens cap assembly of the present invention will be as follows with the preferred embodiment description of drawings.
Please refer to Fig. 2, the synoptic diagram that it is depicted as according to the lens cap assembly of the preferred embodiments of the present invention is by the visual outward diagram that becomes in projector inside.In Fig. 2, projector 202 comprises casing 204, camera lens 206, lens cap assembly 208 and guidance device, and casing 204 is to have a mirror plate 210, and camera lens 206 is to be disposed in the casing 204, in order to the projection image.When if mirror plate 210 is not covered by anything, the image that camera lens 206 is throwed can be by mirror plate 210 to projector 202, to carry out the projection work of projector 202.Wherein, lens cap assembly 206 is to be disposed in the projector 202, and lens cap assembly 206 is to comprise power switch 212, control module 214, gear unit 216, lens cap 218, detection unlatching unit 220a and detect closed cell 220b.But lens cap 218 is the modes with folding to be disposed on the inwall of casing 204, in order to open or to close mirror plate 210.
More smooth and easy for lens cap 218 can be moved, the present invention can dispose guidance device in the inwall and the mirror plate 210 of casing 204, in order to moving of guiding lens cap 218, for example be guide bar 222a and the 222b that is parallel to each other, with the two ends, the relative left and right sides that slidably connect lens cap 218 respectively, make lens cap 218 to move around along the direction of the arrow 250 of Fig. 2; Simultaneously, mirror plate 210 is to be arranged between guide bar 222a and the 222b, makes lens cap 218 central authorities can align mirror plate 210, so by moving lens skull 218 to open or to close mirror plate 210.Wherein, guide bar 222a and 222b are the both sides that is positioned at mirror plate 210, with the drop shadow effect that does not have influence on camera lens 206 is principle, and the two ends end to end of guide bar 222a are to be disposed on the inwall of casing 204 by fixed leg 224a and 224b respectively, promptly have one between the inwall of guide bar 222a and casing 204 at interval.And the two ends end to end of guide bar 222b are to be disposed on the inwall of casing 204 by fixed leg 226a and 226b respectively, promptly also have this between the inwall of guide bar 222b and casing 204 at interval, in order to offer lens cap 217 space of slip are arranged.
The length that it should be noted that guide bar 222a and 222b must be enough long, allows the lens cap 218 can complete opening or close mirror plate 210, and the masked area of lens cap 218 must design the openings of sizes greater than mirror plate 210.So lens cap 218 can cover mirror plate 210 fully, to close mirror plate 210, prevent that extraneous dust from entering in the casing 204 via mirror plate 210, also avoid dust to be stained with and be distributed in camera lens 206, keep the cleaning of camera lens 206.
Detect closed cell 220b and be on the inwall that is disposed at casing 204 and be positioned at the right of mirror plate 210 and guide bar 222a, it is one side of the lower end of guidance device, in order to the shake-up of the teat 218b of the right-hand member of accepting lens cap 218 and export a closed stop signal according to this, promptly detect closed cell 220b and will cover 218 in order to detector lens and whether arrive at first precalculated position, with closed mirror plate 210.Detecting unlatching unit 220a is disposed on the inwall of casing 204, and be positioned at the right of guide bar 222a and detect the top of closed cell 220b, it is one side of the upper end of guidance device, in order to the shake-up of the teat 218b of the right-hand member of accepting lens cap 218 and export one according to this and open stop signal, promptly detect folding unit 220a and will cover 218 in order to detector lens and whether arrive at second precalculated position, to open mirror plate 210.
Refer again to Fig. 2, when the user does not use projector 202 and desire that lens cap 218 is closed mirror plate 210, at first, the user can also export closed signal to control module 214 by powered-down switch 212 according to this, then, control module 214 will be controlled gear unit 216 after receiving closed signal, make gear unit 216 rotate along the direction of the arrow 260 of Fig. 2.Then, because the cause of the 216a of teeth portion of gear unit 216 and the tooth-strip part 218b of lens cap 218 engagement, make lens cap 218 will be along with the rotation of gear unit 216 move along the direction of the arrow 250 of Fig. 2, i.e. lens cap 218 beginnings are moved to the lower end of guidance device.At this moment, teat 218b also leaves in detection unlatching unit 220a and follows lens cap 218 to move together and advance.
Then, when continuing to move, lens cap 218 advances and teat 218b when approaching to detect closed cell 220b, protrusion 218b will touch and detect closed cell 220b, promptly detect closed cell 220b and detect lens cap 218 and arrived at first precalculated position, detect closed cell 220b and will export closed stop signal to control module 214.Then, control module 214 receives will be controlled gear unit 216 behind the closed stop signal and stop operating, and lens cap 218 also stops to move.At this moment, lens cap 218 is just closed mirror plate 210, and lens cap 218 is also between camera lens 206 and mirror plate 210; avoid dust to enter in the casing 204 and len 206; as shown in Figure 3, wherein, Figure 3 shows that the lens cap of Fig. 2 closes the synoptic diagram of mirror plate.
Please refer to Fig. 3, when user's desire uses projector 202 and desire that lens cap 218 is opened mirror plate 210, at first, the user can also export the unlatching signal to control module 214 by power-on switch 212 according to this, then, control module 214 will be controlled gear unit 216 after receiving and opening signal, make gear unit 216 rotate along the direction of the arrow 360 of Fig. 3.Then, lens cap 218 will be along with the rotation of gear unit 216 moves along the direction of the arrow 350 of Fig. 3, i.e. lens cap 218 beginnings are moved to the upper end of guidance device.At this moment, teat 218b also leaves in detecting closed cell 220b and then lens cap 218 and moves together and retreat.
Then, when continuing to move, lens cap 218 retreats and teat 218b approaches to detect when opening unit 220a, protrusion 218b will touch to detect and open unit 220a, i.e. detection unlatching unit 220a detects lens cap 218 and has arrived at second precalculated position, detects unlatching unit 220a and will export the unlatching stop signal to control module 214.Then, control module 214 receives to open and will control gear unit 216 behind the stop signal and stop operating, and lens cap 218 also stops to move.At this moment, lens cap 218 is just opened mirror plate 210, and is and for example shown in Figure 2, and the image that camera lens 206 is throwed can be by mirror plate 210 to projector 202, to carry out the projection work of projector 202.
Wherein, when projector's power switch 212 was closed (Off), camera lens 206 was positioned a reception position and is accommodated in the casing 204; When projector's power switch 212 was opened (On), camera lens 206 was positioned a projected position and outside projection opening 210 stretches out in casing 204.
In addition, when user's powered-down switch 212, camera lens 206 can move to reception position from the projection position earlier, and camera lens 206 will be accommodated in the casing 204, and then, gear unit 216 just can begin to drive lens cap 218 and move to the lower end of guide bar 222a and 222b.In like manner, when user's power-on switch 212, gear unit 216 can pioneer's index glass skull 218 moves to the upper end of guide bar 222a and 222b, then, camera lens 206 just can begin to move to projected position from reception position, and camera lens 206 will be outside projection opening 210 stretches out in casing 204.
Right ripe this skill person can understand that all technology of the present invention is not limited thereto, for example lens cap assembly can be applied to digital camera (Digital Still Camera, DSC) and digital code camera (Digital VideoCamdera, DVC) etc. on the board, allow user the controls lens lid and the action of opening and closing easily, quite convenient.
The lens cap assembly that the above embodiment of the present invention is disclosed, allow the user open or during the powered-down switch, can order about lens cap closure or openness mirror plate, break away from the design yoke of user with the traditional lens cap of manual plug, so, lens cap assembly of the present invention simple to operate and meet modern's demand.
In sum; though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any insider; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking the accompanying Claim book person of defining.
Claims (12)
1. lens cap assembly, configurable in a projector and use a mirror plate for this projector of user's folding, this projector comprises a casing and a camera lens at least, and this configurations of lenses is in this casing, in order to the projection image, and this mirror plate is disposed in this casing and corresponding to this camera lens, this lens cap assembly comprises:
One power switch is disposed on this casing;
One lens cap is disposed on the inwall of this casing in a movable manner;
One gear unit is disposed on the inwall of this casing, moves in order to order about this lens cap;
One detects closed cell, is disposed on the inwall of this casing and is positioned at one side of this mirror plate, in order to receive touching of this lens cap; And
One detect to open the unit, is disposed on the inwall of this casing and is positioned at by another of this mirror plate, in order to receive touching of this lens cap;
Wherein, this user can close this power switch, rotates to order about this gear unit, drives this lens cap and moves; After this lens cap touches this detection closed cell, this detection closed cell will make this gear unit stop operating, and make this lens cap stop and closing this mirror plate, in order to keep the cleaning of this camera lens;
Wherein, this user can open this power switch, rotates to order about this gear unit, drives this lens cap and moves; After this lens cap touches this detection unlatching unit, this gear unit will stop operating, and make this lens cap stop to move and opening this mirror plate, and the image that this camera lens throwed can be by this mirror plate to this projector.
2. lens cap assembly as claimed in claim 1, wherein this gear unit has a teeth portion.
3. lens cap assembly as claimed in claim 2, wherein an end of this lens cap has a tooth-strip part, in order to mesh with this teeth portion.
4. lens cap assembly as claimed in claim 1, wherein the other end of this lens cap has a teat, opens unit and this detection closed cell in order to touch this detection.
5. a projector, this projector comprises:
One power switch;
One casing, this casing has a mirror plate;
One guidance device is located at by this mirror plate, and this guidance device has one first end and one second end;
One lens cap is arranged on this guidance device in a movable manner;
One first detecting unit is arranged at by this first end of this guidance device, whether arrives at one first precalculated position in order to detect this lens cap;
One second detecting unit is arranged at by this second end of this guidance device, whether arrives at one second precalculated position in order to detect this lens cap; And
One gear unit is connected in this power switch, this first detecting unit and this second detecting unit, in order to optionally to drive between this second end that this lens cap is displaced into this first end of this guidance device and this guidance device;
Wherein, when this user closed this power switch, this gear unit began to drive this lens cap and moves to this first end of this guidance device, detects this lens cap up to this first detecting unit and arrives at this first precalculated position;
Wherein, when this user opened this power switch, this gear unit began to drive this lens cap and moves to this second end of this guidance device, detects this lens cap up to this second detecting unit and arrives at this second precalculated position.
6. projector as claimed in claim 5, wherein this gear unit has a teeth portion, and this lens cap is to have a tooth-strip part, in order to mesh with this teeth portion.
7. projector as claimed in claim 6, wherein this guidance device is two parallel guidance bars, this mirror plate is to be arranged between this two parallel guidance bar, and this two parallel guidance bar is the two opposite sides that slidably are linked to this lens cap respectively, makes these lens cap central authorities can align this mirror plate.
8. projector as claimed in claim 5, more comprise a telescopic camera lens, when this power switch is closed, this camera lens is positioned a reception position and is accommodated in this casing, when this power switch is opened, this camera lens be positioned a projected position and certainly this mirror plate stretch out in outside this casing, wherein, when this user closes this power switch, this camera lens can move to this reception position from this projected position earlier, this gear unit just can begin to drive this lens cap and moves to this first end of this guidance device then, when this user opens this power switch, this gear unit will drive this lens cap earlier and move to this second end of this guidance device, and this camera lens can will move to this projected position by this reception position then, and this camera lens will stretch out in this casing from this mirror plate.
9. according to the lens cap assembly of claim 1, it is characterized in that
Described power switch produces one respectively and opens a signal or a closed signal when the user opens or closes;
Described detection closed cell produces a closed stop signal according to touching of this lens cap of receive;
Described detection is opened the unit and is produced a unlatching stop signal according to touching of this lens cap of receive; And
Also comprise a control module, be disposed in this casing and with this power switch, this gear unit, this detections closed cell and this detection unlatching unit and connect, this control module is in order to receive this unlatching signal, this closure signal, this closure stop signal and this unlatching stop signal;
Wherein, when this user's desire during with closed this mirror plate of this lens cap, this user can close this power switch, this power switch will be exported this closure signal to this control module, this control module receives behind this closure signal and orders about this gear unit and rotate, and makes this lens cap move along with the rotation of this gear unit and advances; When this lens cap approaches this detection closed cell, this lens cap will touch this detection closed cell, this detects closed cell will export this closure stop signal to this control module, this control module receives and will order about this gear unit behind this closure stop signal and stop operating, make this lens cap stop to move to advance and close this mirror plate, in order to keep the cleaning of this camera lens;
Wherein, when this user's desire is opened this mirror plate with this lens cap, this user can open this power switch, this power switch will be exported this unlatching signal to this control module, this control module receives behind this unlatching signal and orders about this gear unit and rotate, and makes this lens cap move along with the rotation of this gear unit and retreats; When this lens cap approaches this detection unlatching unit, this lens cap will touch this detection and open the unit, this detects the unlatching unit will export this unlatching stop signal to this control module, this control module receives and will order about this gear unit behind this unlatching stop signal and stop operating, make this lens cap stop to move and retreat and open this mirror plate that the image that this camera lens throwed can be by this mirror plate to this projector.
10. lens cap assembly as claimed in claim 9, wherein this gear unit has a teeth portion.
11. lens cap assembly as claimed in claim 10, wherein an end of this lens cap has a tooth-strip part, in order to mesh with this teeth portion.
12. lens cap assembly as claimed in claim 9, wherein the other end of this lens cap has a teat, opens unit and this detection closed cell in order to touch this detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02101651.8A CN1235085C (en) | 2002-01-14 | 2002-01-14 | Lens cap assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02101651.8A CN1235085C (en) | 2002-01-14 | 2002-01-14 | Lens cap assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1432862A CN1432862A (en) | 2003-07-30 |
| CN1235085C true CN1235085C (en) | 2006-01-04 |
Family
ID=27627345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02101651.8A Expired - Fee Related CN1235085C (en) | 2002-01-14 | 2002-01-14 | Lens cap assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1235085C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963658B (en) * | 2005-11-11 | 2010-12-08 | 亚洲光学股份有限公司 | Closure door apparatus of camera |
| JP4940002B2 (en) * | 2007-02-07 | 2012-05-30 | 株式会社リコー | Imaging lens drive control device, drive control method, and imaging device |
| CN101498882B (en) * | 2008-02-03 | 2011-01-26 | 联想(北京)有限公司 | Projection equipment |
| CN102221770B (en) * | 2011-05-25 | 2013-06-26 | 苏州佳世达光电有限公司 | Lens cap device and projection machine |
| CN102879990B (en) * | 2011-07-11 | 2015-02-18 | 亚洲光学股份有限公司 | Lens cover switching device for projection machine |
| CN102608849A (en) * | 2012-03-23 | 2012-07-25 | 深圳雅图数字视频技术有限公司 | Projector lens protection device and projector |
| CN103246127B (en) * | 2013-04-15 | 2016-08-10 | 华为技术有限公司 | Shielding cover slide construction and there is the video device of this shielding cover slide construction |
| CN105068366B (en) * | 2015-09-01 | 2017-03-15 | 深圳市中影院线有限公司 | Scialyscope self-action dust prevention system |
| CN107065115B (en) * | 2017-06-16 | 2019-07-12 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Self-adapting electric lens cover mechanism and its cap-opening control method |
| CN109669309B (en) * | 2017-10-13 | 2021-03-05 | 深圳光峰科技股份有限公司 | Projection device |
| CN108267921A (en) * | 2018-01-22 | 2018-07-10 | 苏州戎维邦信息技术有限公司 | Can remote control projector lens block/open control box |
-
2002
- 2002-01-14 CN CN02101651.8A patent/CN1235085C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1432862A (en) | 2003-07-30 |
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Owner name: QISDA TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BENQ CORPORATION. Effective date: 20100408 |
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Granted publication date: 20060104 Termination date: 20110114 |