CN202771144U - Automatic focusing projector - Google Patents
Automatic focusing projector Download PDFInfo
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- CN202771144U CN202771144U CN 201220307347 CN201220307347U CN202771144U CN 202771144 U CN202771144 U CN 202771144U CN 201220307347 CN201220307347 CN 201220307347 CN 201220307347 U CN201220307347 U CN 201220307347U CN 202771144 U CN202771144 U CN 202771144U
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Abstract
The utility model discloses an automatic focusing projector, comprising an optical engine, a lens module, and a processor. The optical engine is connected with the lens module and the processor. The processor controls the optical engine to project through the lens module. The automatic focusing projector also comprises a lens drive module and a distance detection module. The lens drive module is connected with the lens module and is used to drive the lens module to move to focus. The distance detection module is connected with the processor and is used to detect a distance between the projector and an object in the front. The projector with the structure not only can automatically adjust focal length, but also can suspend projection automatically once a person or an object in front of the projector is detected. The automatic focusing projector prevents hard lights from directly shooting in human eyes and damaging human eyes, especially eyes of children, and safety performance of the projector is improved.
Description
Technical field
The utility model relates to a kind of projector, especially a kind of projector that can automatic focusing.
Background technology
Projector is used for the PC screen is amplified demonstration at present, by being connected with apparatus such as computer, the content that needs are shown projects on the screen, mainly be in the places such as meeting room, classroom, to connect external mechanical (desktop computer for people, the notes computer, camera with recording device etc.) projection goes out large picture.
In order to make things convenient for carrying and using of projector, the portable projector of numerous species has appearred in the market.Portable projector is general to be placed on the table or carries out projection on the floor.Because the placement location of projector and the distance between the projection screen are unfixing, therefore each this projector that uses carries out all needing again projector to be focused before the projection, until projected picture is clear, so that the use of this projector is very inconvenient.Particularly in some small projector, owing to inevitably can cause the change of projector placement location in the focusing process, need to repeatedly focus, so that focusing is more difficult and loaded down with trivial details.
The utility model content
For the deficiencies in the prior art, the purpose of this utility model is the projector that a kind of automatic focusing that can automatic focus adjustable will be provided.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of projector of automatic focusing, comprise light engine, camera lens module and processor, described light engine is connected with processor with described camera lens module respectively, described processor is controlled this light engine and is carried out projection by described camera lens module, also comprise a lens driving module and apart from detection module, described lens driving module is connected with described camera lens module, is used for driving described camera lens module and moves and focus; Describedly be connected with described processor apart from detection module, for detection of the distance between this projector and the objects in front.
In the technique scheme, described is a ultrasonic range finder or infrared ambulator or laser range finder apart from detection module.
For can more accurate measuring projector and the barrier in its place ahead or the distance between the projection screen, describedly be arranged near described camera lens module part apart from detection module, it covers the drop shadow spread of described camera lens module at least apart from sensing range.
In the technique scheme, described lens driving module comprises mechanical reduction gear and motor, described mechanical reduction gear respectively with described motor be connected camera lens module and be connected, be used for regulating the position of described camera lens module.
Further, described motor is connected with described processor, and this processor is controlled this revolution.
In the technique scheme, the distance of this projector normal projection is 2 to 3.5 meters, if described this projector and the distance between its place ahead barrier of measuring apart from detection module is 0 to 1.5 meter, described processor is controlled described light engine and is stopped projection, the barrier that prevents the place ahead of this projector is human body, the high light that this projector projection produces has greatly improved the security performance of this projector to the human eye injury.
With respect to prior art, the utility model detects the distance between projector and the projection screen automatically, and automatic focus adjustable is until projected picture is clear, and manually adjusting focal length has made things convenient for people's use.In addition on the one hand, this projector in projection process, in case detected human body or object gear in projector the place ahead, can also the automatic pause projection, prevent that the high light direct projection of projector from damaging human eye, especially children's eyes at human eye, improved the security performance of this projector.
In order to understand fully the purpose of this utility model, feature and effect, be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation.
Description of drawings
Fig. 1 is inner structure schematic diagram of the present utility model;
Fig. 2 is the utility model contour structures schematic diagram;
Fig. 3 is use view of the present utility model;
Among the figure:
The 1-processor; The 2-light engine; The 3-camera lens module; 4-lens driving module; The 41-mechanical reduction gear; The 42-motor; 5-is apart from detection module; The 6-remote signal receiver; The 7-projection screen; A-drop shadow spread; B-is apart from sensing range.
Embodiment
As shown in Figure 1 to Figure 3, a kind of autofocus projector, comprise light engine 2, camera lens module 3 and processor 1, described light engine 2 is connected with processor with described camera lens module 3 respectively and is connected, and described processor 1 this light engine 2 of control carries out projection by described camera lens module 3.
The utility model difference with the prior art is, projector described in the utility model also comprises a lens driving module 4 and apart from detection module 5, describedly be connected with described processor 1 apart from detection module 5, for detection of the distance of this projector objects in front to projector; Described lens driving module 4 is connected with described camera lens module 3, be used for according to this detect apart from detection module 5 and projection screen 7 between distance drive described camera lens module 3 and move and carry out automatic focusing.
Above-mentionedly can be a ultrasonic range finder or infrared ambulator apart from detection module 5.Ultrasound wave gap instrument generally comprises ultrasonic transmitting element and ultrasound wave receiving element, and the ultrasound wave that ultrasonic transmitting element sends returns after running into barrier, is received by the ultrasound wave receiving element.Therefore, this ultrasonic range finder can obtain the projection screen 7 in projector and the place ahead or the distance between the barrier by the time of calculating between the round barrier of this ultrasound wave.Infrared ambulator comes and goes the projection screen 7 in projector and the place ahead or the time between the barrier and obtains distance between projector and front projection's screen 7 or the barrier by calculating infrared ray.The course of work of this infrared ambulator and the process of ultrasonic range finder are similar, no longer give unnecessary details herein.The range measurement principle of laser range finder comprises and utilizes the laser range finder that phase method finds range and utilize and calculate the laser range finder that laser is found range two-way time.
See also Fig. 2, for the distance between more accurate measuring projector and the projection screen 7, and detect as early as possible object or the human body that when projection, enters in a of drop shadow spread, be arranged near described camera lens module 3 parts apart from detection module 5, it covers a of drop shadow spread of described camera lens module 3 at least apart from sensing range b.General, can be with should be wider by approximately 10%～20% than the angle of drop shadow spread a apart from the angle of sensing range b.
Lens driving module 4 comprises a mechanical reduction gear 41 and motor 42, described mechanical reduction gear 41 respectively with described motor 42 be connected camera lens module 3 and be connected, described motor 42 drives the position of regulating described camera lens module 3 by described mechanical reduction gear 41.Described motor 42 is connected with described processor 1, these motor 42 rotations of this processor 1 control.Motor 42 can drive camera lens module 3 and move, thereby can focusing regulate after slowing down through mechanical reduction gear 41.
See also Fig. 3, a is the drop shadow spread of camera lens module 3, the zone at the high light place of namely penetrating in the camera lens module 3; B is the human detection scope of proximity transducer 41.When using this projector to carry out projection on the projection screen 7, the distance between projector and the projection screen 7 is measured by emission ultrasound wave or infrared ray apart from detection module 5, and measurement result is sent to processor 1.Processor 1, so that moving a certain distance forward or backward of can responding of camera lens module 3, thereby is realized automatically projection focal length being adjusted apart from the rotating speed of control motor 42 with rotate the number of turns according to this, reaches the effect of clear projection and projection.
Since apart from detection module 5 be slightly larger than a of this drop shadow spread apart from sensing range b so that in the certain distance scope, can sense object or human body proximity apart from detection module 5.Because the distance of projector normal projection is 2 to 3.5 meters, if in the process of projector projection, object or human body appear between projector and projection screen 7, after can automatically detecting distance between the measurement target in projector and the place ahead apart from detection module 5 and having become 0 to 1.5 meter, this distance that will detect apart from detection module 5 is sent to processor 1, after processor 1 detects this current measuring distance, cut off the power supply of light engine 2, temporarily stop projection, the high light direct projection of avoiding projection to produce enters among the human eye, to the human eye injury.Again after the start, this processor 1 starts the power supply of light engine 2 automatically, proceeds projection.
On the one hand, this projector also comprises a remote signal receiver 6 that is connected with processor 1, can be by telepilot to remote signal receiver 6 sending controling instructions in addition.After remote signal receiver 6 receives steering order, this steering order is sent to processor 1 processes.Therefore, also can come adjusting focal length by telepilot.
With respect to prior art, the utility model detects the distance between projector and the projection screen 7, and automatic focus adjustable is until projected picture is clear, and manually adjusting focal length has made things convenient for people's use.In addition on the one hand, this projector is in projection process, in case detected human body or object gear in projector the place ahead, all right automatic pause projection, prevent that the high light direct projection of projector from damaging human eye, especially children's eyes at human eye, improve the security performance of this projector, after telepilot is controlled, can proceed projection.
More than describe preferred embodiment of the present utility model in detail, the ordinary skill that should be appreciated that this area need not creative work and just can make many modifications and variations according to design of the present utility model.Therefore, all in the art technician according to the utility model design on the prior art basis by logic analysis, reasoning or according to the available technical scheme of limited experiment, all should be among the determined protection domain by these claims.
Claims (6)
1. the projector of an automatic focusing, comprise light engine, camera lens module and processor, described light engine is connected with processor with described camera lens module respectively, described processor is controlled this light engine and is carried out projection by described camera lens module, it is characterized in that, also comprise a lens driving module and apart from detection module, described lens driving module is connected with described camera lens module, be used for driving described camera lens module and move and focus; Describedly be connected with described processor apart from detection module, for detection of the distance between this projector and the objects in front.
2. the projector of a kind of automatic focusing as claimed in claim 1 is characterized in that, described is a ultrasonic range finder or infrared ambulator or laser range finder apart from detection module.
3. the projector of a kind of automatic focusing as claimed in claim 2 is characterized in that, describedly is arranged near described camera lens module part apart from detection module, and it covers the drop shadow spread of described camera lens module at least apart from sensing range.
4. such as the projector of each described a kind of automatic focusing of claims 1 to 3, it is characterized in that, described lens driving module comprises mechanical reduction gear and motor, described mechanical reduction gear respectively with described motor be connected camera lens module and be connected, be used for regulating the position of described camera lens module.
5. the projector of a kind of automatic focusing as claimed in claim 4 is characterized in that, described motor is connected with described processor, and this processor is controlled this revolution.
6. the projector of a kind of automatic focusing as claimed in claim 5 is characterized in that, after described this projector of measuring apart from detection module and the distance between its place ahead barrier were 0 to 1.5 meter, described processor was controlled described light engine and stopped projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220307347 CN202771144U (en) | 2012-06-28 | 2012-06-28 | Automatic focusing projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220307347 CN202771144U (en) | 2012-06-28 | 2012-06-28 | Automatic focusing projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202771144U true CN202771144U (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220307347 Expired - Fee Related CN202771144U (en) | 2012-06-28 | 2012-06-28 | Automatic focusing projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202771144U (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576431A (en) * | 2013-11-20 | 2014-02-12 | 巴可伟视(北京)电子有限公司 | Method and system device applied to using field of high-brightness laser projection machine and used for protecting human eyes |
| CN103576436A (en) * | 2013-09-29 | 2014-02-12 | 深圳市天辅乘云科技有限公司 | Projector optical machine with automatic focusing function |
| CN103744176A (en) * | 2014-01-21 | 2014-04-23 | 武汉虹识技术有限公司 | Liquid lens focusing system and method based on phase-locked ring |
| CN104598034A (en) * | 2015-02-09 | 2015-05-06 | 联想(北京)有限公司 | Information processing method and information processing equipment |
| CN104698728A (en) * | 2015-03-27 | 2015-06-10 | 百度在线网络技术（北京）有限公司 | Micro-projector as well as operating method and operating device of micro-projector |
| CN105208261A (en) * | 2014-06-23 | 2015-12-30 | 展讯通信（上海）有限公司 | Automatic focusing method, automatic focusing device and camera device |
| CN105301885A (en) * | 2015-11-30 | 2016-02-03 | 成都市极米科技有限公司 | Focus determining system, focus determining method and remote controller pairing method of projection device |
| CN106154721A (en) * | 2015-04-27 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of distance-finding method, automatic focusing method and device |
| CN106254369A (en) * | 2016-04-19 | 2016-12-21 | 广东丰光科技有限公司 | A kind of rotatable projector based on ICP/IP protocol and control system thereof |
| CN106950789A (en) * | 2017-03-29 | 2017-07-14 | 联想(北京)有限公司 | Projector equipment |
| CN107290918A (en) * | 2016-03-31 | 2017-10-24 | 深圳市海勤科技有限公司 | A kind of projector intelligent focusing design method based on ultrasonic ranging |
| CN109634044A (en) * | 2017-10-08 | 2019-04-16 | 湖南光学传媒有限公司 | A kind of device of elevator projector auto-focusing |
| CN110719449A (en) * | 2019-09-29 | 2020-01-21 | 深圳市火乐科技发展有限公司 | Focusing method of intelligent projector and related product |
| CN112118431A (en) * | 2019-06-20 | 2020-12-22 | 青岛海信激光显示股份有限公司 | Projection method and device |
| CN114740681A (en) * | 2022-04-19 | 2022-07-12 | 深圳市和天创科技有限公司 | Intelligent distance measurement adjusting system of single-chip liquid crystal projector with rotary lens |
-
2012
- 2012-06-28 CN CN 201220307347 patent/CN202771144U/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576436A (en) * | 2013-09-29 | 2014-02-12 | 深圳市天辅乘云科技有限公司 | Projector optical machine with automatic focusing function |
| CN103576431A (en) * | 2013-11-20 | 2014-02-12 | 巴可伟视(北京)电子有限公司 | Method and system device applied to using field of high-brightness laser projection machine and used for protecting human eyes |
| CN103744176A (en) * | 2014-01-21 | 2014-04-23 | 武汉虹识技术有限公司 | Liquid lens focusing system and method based on phase-locked ring |
| CN105208261A (en) * | 2014-06-23 | 2015-12-30 | 展讯通信（上海）有限公司 | Automatic focusing method, automatic focusing device and camera device |
| CN104598034A (en) * | 2015-02-09 | 2015-05-06 | 联想(北京)有限公司 | Information processing method and information processing equipment |
| CN104598034B (en) * | 2015-02-09 | 2019-03-29 | 联想(北京)有限公司 | Information processing method and information processing equipment |
| US9848175B2 (en) | 2015-02-09 | 2017-12-19 | Lenovo (Beijing) Co., Ltd. | Projection method and electronic device |
| CN104698728A (en) * | 2015-03-27 | 2015-06-10 | 百度在线网络技术（北京）有限公司 | Micro-projector as well as operating method and operating device of micro-projector |
| CN106154721A (en) * | 2015-04-27 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of distance-finding method, automatic focusing method and device |
| US10698308B2 (en) | 2015-04-27 | 2020-06-30 | Zte Corporation | Ranging method, automatic focusing method and device |
| CN105301885A (en) * | 2015-11-30 | 2016-02-03 | 成都市极米科技有限公司 | Focus determining system, focus determining method and remote controller pairing method of projection device |
| CN107290918A (en) * | 2016-03-31 | 2017-10-24 | 深圳市海勤科技有限公司 | A kind of projector intelligent focusing design method based on ultrasonic ranging |
| CN106303480A (en) * | 2016-04-19 | 2017-01-04 | 广东丰光科技有限公司 | A kind of rotatable projector based on NB IOT agreement and control system thereof |
| CN106254369A (en) * | 2016-04-19 | 2016-12-21 | 广东丰光科技有限公司 | A kind of rotatable projector based on ICP/IP protocol and control system thereof |
| CN106950789A (en) * | 2017-03-29 | 2017-07-14 | 联想(北京)有限公司 | Projector equipment |
| CN106950789B (en) * | 2017-03-29 | 2019-02-05 | 联想(北京)有限公司 | Projection device |
| CN109634044A (en) * | 2017-10-08 | 2019-04-16 | 湖南光学传媒有限公司 | A kind of device of elevator projector auto-focusing |
| CN112118431A (en) * | 2019-06-20 | 2020-12-22 | 青岛海信激光显示股份有限公司 | Projection method and device |
| US11829057B2 (en) | 2019-06-20 | 2023-11-28 | Hisense Laser Display Co., Ltd | Projection method and projection apparatus |
| CN110719449A (en) * | 2019-09-29 | 2020-01-21 | 深圳市火乐科技发展有限公司 | Focusing method of intelligent projector and related product |
| CN110719449B (en) * | 2019-09-29 | 2021-12-21 | 深圳市火乐科技发展有限公司 | Focusing method of intelligent projector and related product |
| CN114740681A (en) * | 2022-04-19 | 2022-07-12 | 深圳市和天创科技有限公司 | Intelligent distance measurement adjusting system of single-chip liquid crystal projector with rotary lens |
| CN114740681B (en) * | 2022-04-19 | 2023-10-03 | 深圳市和天创科技有限公司 | Intelligent ranging adjustment system of monolithic liquid crystal projector with rotary lens |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20170628 |
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| CF01 | Termination of patent right due to non-payment of annual fee |