WO2014082298A1 - Projection objective lens system with infrared monitoring - Google Patents
Projection objective lens system with infrared monitoring Download PDFInfo
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- WO2014082298A1 WO2014082298A1 PCT/CN2012/085664 CN2012085664W WO2014082298A1 WO 2014082298 A1 WO2014082298 A1 WO 2014082298A1 CN 2012085664 W CN2012085664 W CN 2012085664W WO 2014082298 A1 WO2014082298 A1 WO 2014082298A1
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- projection objective
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 83
- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 230000001939 inductive effect Effects 0.000 claims description 2
- 238000003384 imaging method Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 230000002452 interceptive effect Effects 0.000 description 8
- 230000003993 interaction Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
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- 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
- G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects
Definitions
- the present invention relates to a projection apparatus, and more particularly to a projection objective system with infrared monitoring.
- the conventional interactive projection system is generally composed of a projection module 10, an infrared CMOS camera monitoring module 20, and an infrared laser emitting module 30, each of which is an independent device, and the projection screen 40 and the infrared monitoring screen cannot
- the infrared monitor screen is generally larger than the projection screen, and the optical axis of the infrared monitor lens is often difficult to achieve the vertical monitor image, so that the sensing area on the infrared CMOS chip is relatively small, so that the image resolution is reduced, and the brightness is reduced.
- the uniformity is worse, the picture is distorted, the sensitivity is reduced and the response speed is delayed during interactive operation; and when the projected picture size is changed, the interactive algorithm needs to recalibrate the position of the monitoring point.
- the technical problem to be solved by the present invention is to provide a projection objective system with infrared monitoring for the above-mentioned drawbacks of the prior art.
- the technical solution adopted by the present invention to solve the technical problem is: constructing a projection objective system with infrared monitoring, comprising a projection module, an infrared monitoring module, and an infrared laser emitting module, wherein the projection module includes a projection a light source, and a projection objective connected to the projection light source, wherein the projection objective is provided with a light splitting component that reflects infrared light and transmits visible light, the infrared monitoring module is connected to the projection objective, and the infrared monitoring module
- the optical axis passes through the beam splitting element and is coaxial with the optical axis of the projection objective.
- the beam splitting element comprises a beam splitting prism.
- the beam splitting prism comprises two right-angled prisms bonded to each other, and the bonding surface of the two right-angle prisms is provided with a beam splitting film.
- the beam splitting element comprises a beam splitter.
- the projection objective system with infrared monitoring according to the present invention, wherein the infrared monitoring module comprises a monitoring lens and an inductive chip disposed in the monitoring lens.
- the projection objective system with infrared monitoring according to the present invention, wherein the infrared laser emitting module comprises an infrared laser pen.
- the projection objective system with infrared monitoring wherein the projection objective comprises a housing, a first lens group and a second lens group disposed in the housing, and the beam splitting element is located in the first lens Between the group and the second lens set, and the first lens set is movable back and forth within the housing.
- the projection objective system with infrared monitoring according to the present invention, wherein the projection objective system further comprises an automatic focusing device.
- the projection objective system with infrared monitoring wherein the auto focus device comprises a separate infrared light source, an arithmetic processor, and a motor for driving the first lens group to move back and forth, the sensor chip And the motor are electrically connected to the operation processor.
- the auto focus device comprises a separate infrared light source, an arithmetic processor, and a motor for driving the first lens group to move back and forth, the sensor chip And the motor are electrically connected to the operation processor.
- the projection objective system with infrared monitoring according to the present invention, wherein the infrared laser plane projected by the infrared laser emitting module is close to and parallel to the projection plane of the projection module.
- the projection objective system with infrared monitoring of the invention has the following beneficial effects: the projection plane and the infrared monitoring screen are coincident, so that the sensing area on the infrared monitoring module can be as large as possible, so that the image resolution is higher and the brightness is uniform. The performance is better, the image distortion is small; at the same time, because the infrared monitoring module and the projection module share a set of imaging system, the sensing area of the monitoring picture on the sensing chip is fixed, and does not change with the size of the projection picture, so that the interaction The algorithm does not need to re-calibrate the position of the monitoring point; since the projection objective is synchronized with the infrared monitoring lens, it is easy to realize the auto-focusing function.
- FIG. 1 is a schematic structural view of an interactive projection objective system in the prior art
- FIG. 2 is a schematic structural view of a first embodiment of a projection objective system with infrared monitoring according to the present invention
- FIG. 3 is a schematic diagram showing the principle of a first embodiment of a projection objective system with infrared monitoring according to the present invention
- FIG. 4 is a schematic structural view of a second embodiment of a projection objective system with infrared monitoring according to the present invention.
- FIG. 5 is a schematic structural view of a third embodiment of a projection objective system with infrared monitoring according to the present invention.
- the projection objective system with infrared monitoring includes a projection module, an infrared monitoring module 300, and an infrared laser emitting module 400, wherein the projection module further
- the projection light source 100 and the projection objective lens 200 connected to the projection light source 100 are provided.
- the projection objective lens 200 is provided with a light splitting component 500 that reflects infrared light and transmits visible light.
- the infrared monitoring module 300 is connected to the projection objective lens 200, and the infrared monitoring module 300 is connected.
- the optical axis passes through the splitting element 500 and is coaxial with the optical axis of the projection objective 200.
- the light beam is emitted from the projection light source 100 and then projected onto the projection plane 600 through the projection objective lens 200.
- the infrared laser emission module 400 emits an infrared laser plane.
- the human hand makes an action within the range of the infrared laser plane, the light beam is played.
- the infrared laser on the human hand is reflected into the infrared monitoring module 300, thereby recognizing the movement of the human hand and realizing the interactive function.
- visible light represented by A in FIG. 3
- infrared light represented by B in FIG.
- infrared monitoring module 300 On plane 600, through projection objective 200, upon reaching spectroscopic element 500, infrared light is reflected into infrared monitoring module 300.
- the invention has the advantages that the projection plane 600 and the infrared monitoring screen coincide with each other, so that the sensing area on the infrared monitoring module 300 can be as large as possible, the image resolution is higher, the brightness uniformity is better, and the image distortion is small;
- the infrared monitoring module shares a set of imaging systems with the 300 projection module. The monitoring image will remain in the same position as the projected image changes synchronously.
- the interactive algorithm does not need to recalibrate the monitoring point position.
- the spectroscopic element 500 may be a dichroic prism.
- the beam splitting prism comprises two right-angled prisms 501 (shown in FIG. 3), and the polarizing film 502 is disposed on the bonding surface of the two right-angle prisms 501.
- the beam splitting element 500 can also be a light splitting sheet, and the working principle is the same as that of the two rectangular prisms 501 which are bonded to each other.
- the infrared monitoring module 300 includes a monitoring lens and a sensing chip 301 disposed in the monitoring lens.
- the projection objective lens 200 comprises a housing, a first lens group 201 and a second lens group 202 disposed in the housing, the light splitting element 500 is located between the first lens group 201 and the second lens group 202, and the first lens Group 201 is moveable back and forth within the housing.
- the projection objective 200 can realize the focusing function, and at the same time, the monitoring lens in the infrared monitoring module 300 can realize the synchronous focusing function, and the sensing area of the monitoring screen on the sensing chip 301 is always fixed, and will not be As the size of the projected picture changes, there is no need to re-calibrate the position of the control point, making the interactive algorithm simpler and the monitoring position more accurate.
- the components and functions of the projection objective system are substantially the same as those of the previous embodiment, except that in the embodiment, the projection objective system further includes Automatic focusing device.
- the auto-focusing device includes a separate infrared light source 700, an arithmetic processor, and a motor for driving the first lens group 201 to move back and forth.
- the sensing chip and the motor are electrically connected to the arithmetic processor.
- the focusing principle of the auto-focusing device is such that when the infrared light source 700 emits a signal pattern to the screen, the infrared light is reflected into the infrared monitoring lens to form an image.
- the image in the infrared monitoring lens is bound to be blurred.
- the image algorithm in the arithmetic processor analyzes the image in the infrared monitoring lens. An adjustment command is issued to the motor to adjust the first lens group 201 until the projection objective and the infrared monitoring lens are focused to a preset standard.
- the infrared laser light plane projected by the infrared laser emitting module 400 is close to and parallel to the projection plane of the projection module.
- the components and functions of the projection objective system are the same as those of the previous embodiment, except that in the embodiment, the infrared laser emitting module 400 is adopted. It is an infrared laser pointer 401.
- the infrared laser pen 401 throws an infrared spot onto the projection plane 600.
- the infrared monitoring module 300 can directly capture the position information of the infrared spot from the projection plane 600, and recognize the spot movement, thereby realizing an interactive function.
- the infrared laser emitting module 400 can also be other components that can emit infrared light, and the principle of interaction is the same as that of the infrared laser pen.
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Abstract
A projection objective lens system with infrared monitoring, comprising a projection module, an infrared monitoring module (300), and an infrared laser emitting module (400), wherein the projection module comprises a projection light source (100) and a projection objective lens (200) connected to said projection light source (100), and a light-splitting element (500) that reflects infrared light rays and transmits visible light rays is provided inside the projection objective lens. The infrared monitoring module and the projection objective lens are connected. Once the optical axis of the infrared monitoring module passes through the light-splitting element, said axis shares an axis with the optical axis of the projection objective lens. The coincidence of the projection surface and the infrared monitoring screen allows for the maximization of the size of the sensing area on the infrared monitoring module and, at the same time, provides for high image resolution, even brightness, and minimal image distortion. Because the infrared monitoring module and the projection module share the same imaging system, the sensing area of the monitoring tableau on the sensing chip is fixed, and does not change when there are changes to the size of the projection tableau; thus, redrawing the positions of the monitoring points is unnecessary.
Description
本发明涉及一种投影装置，更具体地说，涉及一种带红外监控的投影物镜系统。 The present invention relates to a projection apparatus, and more particularly to a projection objective system with infrared monitoring.
如图1所示，传统互动投影系统一般是由投影模组10，红外CMOS摄像头监控模组20，红外激光发射模组30组成，各自之间为独立的器件，投影屏幕40和红外监控屏幕不能重合一致，红外监控屏幕一般要大于投影屏幕，而且红外监控镜头的光轴往往很难做到垂直所要监控的画面，这样在红外CMOS芯片上的感应区域相对较小，使图像分辨率降低，亮度均匀性变差，图片失真大，会造成互动操作时灵敏度降低和反应速度滞后等；并且改变投影画面大小时，互动算法需要重新标定监控点位置。
As shown in FIG. 1 , the conventional interactive projection system is generally composed of a projection module 10, an infrared CMOS camera monitoring module 20, and an infrared laser emitting module 30, each of which is an independent device, and the projection screen 40 and the infrared monitoring screen cannot The coincidence, the infrared monitor screen is generally larger than the projection screen, and the optical axis of the infrared monitor lens is often difficult to achieve the vertical monitor image, so that the sensing area on the infrared CMOS chip is relatively small, so that the image resolution is reduced, and the brightness is reduced. The uniformity is worse, the picture is distorted, the sensitivity is reduced and the response speed is delayed during interactive operation; and when the projected picture size is changed, the interactive algorithm needs to recalibrate the position of the monitoring point.
本发明要解决的技术问题在于，针对现有技术的上述缺陷，提供一种带红外监控的投影物镜系统。 The technical problem to be solved by the present invention is to provide a projection objective system with infrared monitoring for the above-mentioned drawbacks of the prior art.
本发明解决其技术问题所采用的技术方案是：构造一种带红外监控的投影物镜系统，包括投影模组、红外监控模组、以及红外激光发射模组，其中，所述投影模组包括投影光源、以及与所述投影光源连接的投影物镜，所述投影物镜内设有反射红外光线而透射可见光线的分光元件，所述红外监控模组与所述投影物镜连接，所述红外监控模组的光轴过所述分光元件后与所述投影物镜的光轴同轴。
The technical solution adopted by the present invention to solve the technical problem is: constructing a projection objective system with infrared monitoring, comprising a projection module, an infrared monitoring module, and an infrared laser emitting module, wherein the projection module includes a projection a light source, and a projection objective connected to the projection light source, wherein the projection objective is provided with a light splitting component that reflects infrared light and transmits visible light, the infrared monitoring module is connected to the projection objective, and the infrared monitoring module The optical axis passes through the beam splitting element and is coaxial with the optical axis of the projection objective.
本发明所述的带红外监控的投影物镜系统，其中，所述分光元件包括分光棱镜。 The projection objective system with infrared monitoring according to the present invention, wherein the beam splitting element comprises a beam splitting prism.
本发明所述的带红外监控的投影物镜系统，其中，所述分光棱镜包括两块相互粘接的直角棱镜，两所述直角棱镜的粘接面上设有分光膜。
The projection objective system with infrared monitoring according to the present invention, wherein the beam splitting prism comprises two right-angled prisms bonded to each other, and the bonding surface of the two right-angle prisms is provided with a beam splitting film.
本发明所述的带红外监控的投影物镜系统，其中，所述分光元件包括分光片。 The projection objective system with infrared monitoring according to the present invention, wherein the beam splitting element comprises a beam splitter.
本发明所述的带红外监控的投影物镜系统，其中，所述红外监控模组包括监控镜头、以及设置在所述监控镜头内的感应芯片。
The projection objective system with infrared monitoring according to the present invention, wherein the infrared monitoring module comprises a monitoring lens and an inductive chip disposed in the monitoring lens.
本发明所述的带红外监控的投影物镜系统，其中，所述红外激光发射模组包括红外激光笔。 The projection objective system with infrared monitoring according to the present invention, wherein the infrared laser emitting module comprises an infrared laser pen.
本发明所述的带红外监控的投影物镜系统，其中，所述投影物镜包括壳体、设置在所述壳体内的第一镜片组和第二镜片组，所述分光元件位于所述第一镜片组和第二镜片组之间，且所述第一镜片组在所述壳体内可前后移动。
The projection objective system with infrared monitoring according to the present invention, wherein the projection objective comprises a housing, a first lens group and a second lens group disposed in the housing, and the beam splitting element is located in the first lens Between the group and the second lens set, and the first lens set is movable back and forth within the housing.
本发明所述的带红外监控的投影物镜系统，其中，该投影物镜系统还包括自动调焦装置。 The projection objective system with infrared monitoring according to the present invention, wherein the projection objective system further comprises an automatic focusing device.
本发明所述的带红外监控的投影物镜系统，其中，所述自动调焦装置包括单独的红外光源、运算处理器、以及用于推动所述第一镜片组前后移动的马达，所述感应芯片和所述马达均与所述运算处理器电性连接。
The projection objective system with infrared monitoring according to the present invention, wherein the auto focus device comprises a separate infrared light source, an arithmetic processor, and a motor for driving the first lens group to move back and forth, the sensor chip And the motor are electrically connected to the operation processor.
本发明所述的带红外监控的投影物镜系统，其中，所述红外激光发射模组投射的红外激光平面与所述投影模组的投影平面靠近并平行。
The projection objective system with infrared monitoring according to the present invention, wherein the infrared laser plane projected by the infrared laser emitting module is close to and parallel to the projection plane of the projection module.
实施本发明的带红外监控的投影物镜系统，具有以下有益效果：投影平面和红外监控屏幕重合一致，使得红外监控模组上的感应区域可以尽可能的大，使图像分辨率更高，亮度均匀性更好，图像失真小；同时由于红外监控模组与投影模组共用一套成像系统，监控画面在感应芯片上的感应区域是固定的，不会随着投影画面大小变化而变化，使互动算法不需重新标定监控点位置；由于投影物镜与红外监控镜头同步调焦，这样就很容易实现自动调焦功能。
The projection objective system with infrared monitoring of the invention has the following beneficial effects: the projection plane and the infrared monitoring screen are coincident, so that the sensing area on the infrared monitoring module can be as large as possible, so that the image resolution is higher and the brightness is uniform. The performance is better, the image distortion is small; at the same time, because the infrared monitoring module and the projection module share a set of imaging system, the sensing area of the monitoring picture on the sensing chip is fixed, and does not change with the size of the projection picture, so that the interaction The algorithm does not need to re-calibrate the position of the monitoring point; since the projection objective is synchronized with the infrared monitoring lens, it is easy to realize the auto-focusing function.
下面将结合附图及实施例对本发明作进一步说明，附图中： The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:
图1是现有技术中互动投影物镜系统的结构示意图； 1 is a schematic structural view of an interactive projection objective system in the prior art;
图2是本发明一种带红外监控的投影物镜系统第一实施例的结构示意图； 2 is a schematic structural view of a first embodiment of a projection objective system with infrared monitoring according to the present invention;
图3是本发明一种带红外监控的投影物镜系统第一实施例的原理简图； 3 is a schematic diagram showing the principle of a first embodiment of a projection objective system with infrared monitoring according to the present invention;
图4是本发明一种带红外监控的投影物镜系统第二实施例的结构示意图； 4 is a schematic structural view of a second embodiment of a projection objective system with infrared monitoring according to the present invention;
图5是本发明一种带红外监控的投影物镜系统第三实施例的结构示意图。 FIG. 5 is a schematic structural view of a third embodiment of a projection objective system with infrared monitoring according to the present invention.
如图2所示，在本发明的第一实施例中，该带红外监控的投影物镜系统包括投影模组、红外监控模组300、以及红外激光发射模组400，其中，投影模组又进一步包括投影光源100、以及与投影光源100连接的投影物镜200，投影物镜200内设有反射红外光线而透射可见光线的分光元件500，红外监控模组300与投影物镜200连接，红外监控模组300的光轴过分光元件500后与投影物镜200的光轴同轴。
As shown in FIG. 2, in the first embodiment of the present invention, the projection objective system with infrared monitoring includes a projection module, an infrared monitoring module 300, and an infrared laser emitting module 400, wherein the projection module further The projection light source 100 and the projection objective lens 200 connected to the projection light source 100 are provided. The projection objective lens 200 is provided with a light splitting component 500 that reflects infrared light and transmits visible light. The infrared monitoring module 300 is connected to the projection objective lens 200, and the infrared monitoring module 300 is connected. The optical axis passes through the splitting element 500 and is coaxial with the optical axis of the projection objective 200.
光束从投影光源100内射出，然后经过投影物镜200投射到投影平面600上，红外激光发射模组400将会发射一个红外激光平面，当人手在该红外激光平面的范围内做出动作时，打在人手上的红外激光会被反射到红外监控模组300内，从而对人手的动作做出识别，实现互动功能。在投影过程中，可见光线（由图3中的A表示）可以直接通过投影物镜200内的分光元件500，使得可见光线的投影图像可以直接通过分光元件500投射到投影平面600上，而在投影平面600上接收到红外光线（由图3中的B表示）经过投影物镜200，到达分光元件500时，红外光线被反射到红外监控模块300内。这样相当于红外监控模块300与投影物镜200的光轴为同一光轴（如图3所示）。本发明的优点是投影平面600和红外监控屏幕重合一致，使得红外监控模组300上的感应区域可以尽可能的大，使图像分辨率更高，亮度均匀性更好，图像失真小；同时由于红外监控模组与300投影模组共用一套成像系统，监控画面会随着投影画面同步变化而保持相对位置不变，互动算法不需重新标定监控点位置。
The light beam is emitted from the projection light source 100 and then projected onto the projection plane 600 through the projection objective lens 200. The infrared laser emission module 400 emits an infrared laser plane. When the human hand makes an action within the range of the infrared laser plane, the light beam is played. The infrared laser on the human hand is reflected into the infrared monitoring module 300, thereby recognizing the movement of the human hand and realizing the interactive function. During projection, visible light (represented by A in FIG. 3) may pass directly through the spectroscopic element 500 within the projection objective 200 such that a projected image of visible light may be projected directly onto the projection plane 600 through the spectroscopic element 500, while being projected Upon receipt of infrared light (represented by B in FIG. 3) on plane 600, through projection objective 200, upon reaching spectroscopic element 500, infrared light is reflected into infrared monitoring module 300. This corresponds to the same optical axis of the infrared monitoring module 300 and the projection objective 200 (as shown in FIG. 3). The invention has the advantages that the projection plane 600 and the infrared monitoring screen coincide with each other, so that the sensing area on the infrared monitoring module 300 can be as large as possible, the image resolution is higher, the brightness uniformity is better, and the image distortion is small; The infrared monitoring module shares a set of imaging systems with the 300 projection module. The monitoring image will remain in the same position as the projected image changes synchronously. The interactive algorithm does not need to recalibrate the monitoring point position.
优选地，上述分光元件500可以选用分光棱镜。进一步地，该分光棱镜包括两块相互粘接的直角棱镜501（如图3所示），两直角棱镜501的粘接面上设有分光膜502。分光元件500也可以采用分光片，工作原理与采用两块相互粘接的直角棱镜501是一样的。
Preferably, the spectroscopic element 500 may be a dichroic prism. Further, the beam splitting prism comprises two right-angled prisms 501 (shown in FIG. 3), and the polarizing film 502 is disposed on the bonding surface of the two right-angle prisms 501. The beam splitting element 500 can also be a light splitting sheet, and the working principle is the same as that of the two rectangular prisms 501 which are bonded to each other.
进一步地，红外监控模组300包括监控镜头、以及设置在监控镜头内的感应芯片301。而优选地，投影物镜200包括壳体、设置在壳体内的第一镜片组201和第二镜片组202，分光元件500位于第一镜片组201和第二镜片组202之间，且第一镜片组201是可以在壳体内前后移动的。因此使得该投影物镜200可以实现调焦功能，同时也使红外监控模组300中的监控镜头，能够实现同步调焦功能，始终使得监控画面在感应芯片301上的感应区域是固定的，不会随着投影画面大小变化而变化，不需要重新标定控制点位置，使互动算法更简单，监控位置更精确。
Further, the infrared monitoring module 300 includes a monitoring lens and a sensing chip 301 disposed in the monitoring lens. Preferably, the projection objective lens 200 comprises a housing, a first lens group 201 and a second lens group 202 disposed in the housing, the light splitting element 500 is located between the first lens group 201 and the second lens group 202, and the first lens Group 201 is moveable back and forth within the housing. Therefore, the projection objective 200 can realize the focusing function, and at the same time, the monitoring lens in the infrared monitoring module 300 can realize the synchronous focusing function, and the sensing area of the monitoring screen on the sensing chip 301 is always fixed, and will not be As the size of the projected picture changes, there is no need to re-calibrate the position of the control point, making the interactive algorithm simpler and the monitoring position more accurate.
如图4所示，在本发明的第二实施例中，该投影物镜系统的各个组成部分和功能与上一实施例基本相同，不同的是，在本实施例中，该投影物镜系统还包括自动调焦装置。该自动调焦装置包括单独的红外光源700、运算处理器以及用于推动第一镜片组201前后移动的马达，感应芯片和马达均与运算处理器电性连接。自动调焦装置的调焦原理是这样的，当红外光源700打出信号图案到屏幕，红外光反射到红外监控镜头内形成图像。由于投影物镜200与红外监控镜头同步聚焦，因此在投影图像没有聚焦时，红外监控镜头内的图像势必也是模糊的，此时运算处理器内的图像算法会对红外监控镜头内的图像进行分析，发出调节指令给马达调节第一镜片组201，直到投影物镜和红外监控镜头聚焦达到预设的标准。
As shown in FIG. 4, in the second embodiment of the present invention, the components and functions of the projection objective system are substantially the same as those of the previous embodiment, except that in the embodiment, the projection objective system further includes Automatic focusing device. The auto-focusing device includes a separate infrared light source 700, an arithmetic processor, and a motor for driving the first lens group 201 to move back and forth. The sensing chip and the motor are electrically connected to the arithmetic processor. The focusing principle of the auto-focusing device is such that when the infrared light source 700 emits a signal pattern to the screen, the infrared light is reflected into the infrared monitoring lens to form an image. Since the projection objective lens 200 and the infrared monitoring lens are simultaneously focused, when the projected image is not focused, the image in the infrared monitoring lens is bound to be blurred. At this time, the image algorithm in the arithmetic processor analyzes the image in the infrared monitoring lens. An adjustment command is issued to the motor to adjust the first lens group 201 until the projection objective and the infrared monitoring lens are focused to a preset standard.
上述各优选实施例中，红外激光发射模组400投射的红外激光平面与投影模组的投影平面靠近并平行。 In each of the above preferred embodiments, the infrared laser light plane projected by the infrared laser emitting module 400 is close to and parallel to the projection plane of the projection module.
如图5所示，在本发明的第三实施例中，该投影物镜系统的各个组成部分和功能与上一实施例相同，不同的是，在本实施例中，红外激光发射模组400采用的是红外激光笔401。红外激光笔401投出一个红外光斑到投影平面600上，红外监控模组300可以直接从投影平面600上抓取到该红外光斑的位置信息，并对光斑移动作出识别，从而实现互动功能。当然红外激光发射模组400也可以是其他可以发射红外光的部件，实现互动的原理与红外激光笔一样。
As shown in FIG. 5, in the third embodiment of the present invention, the components and functions of the projection objective system are the same as those of the previous embodiment, except that in the embodiment, the infrared laser emitting module 400 is adopted. It is an infrared laser pointer 401. The infrared laser pen 401 throws an infrared spot onto the projection plane 600. The infrared monitoring module 300 can directly capture the position information of the infrared spot from the projection plane 600, and recognize the spot movement, thereby realizing an interactive function. Of course, the infrared laser emitting module 400 can also be other components that can emit infrared light, and the principle of interaction is the same as that of the infrared laser pen.
以上实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据此实施，并不能限制本发明的保护范围。凡跟本发明权利要求范围所做的均等变化与修饰，均应属于本发明权利要求的涵盖范围。
The above embodiments are merely illustrative of the technical concept and the features of the present invention. The purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention without limiting the scope of the present invention. Equivalent changes and modifications made within the scope of the claims of the present invention should fall within the scope of the appended claims.
Claims (10)
1、一种带红外监控的投影物镜系统，包括投影模组、红外监控模组（300）、以及红外激光发射模组（400），其中，所述投影模组包括投影光源（100）、以及与所述投影光源（100）连接的投影物镜（200），其特征在于，所述投影物镜（200）内设有反射红外光线而透射可见光线的分光元件（500），所述红外监控模组（300）与所述投影物镜（200）连接，所述红外监控模组（300）的光轴过所述分光元件（500）后与所述投影物镜（200）的光轴同轴。A projection objective system with infrared monitoring, comprising a projection module, an infrared monitoring module (300), and an infrared laser emitting module (400), wherein the projection module comprises a projection light source (100), and a projection objective (200) connected to the projection light source (100), wherein the projection objective (200) is provided with a spectroscopic component (500) that reflects infrared light and transmits visible light, and the infrared monitoring module (300) is connected to the projection objective (200), and an optical axis of the infrared monitoring module (300) passes through the light splitting element (500) and is coaxial with an optical axis of the projection objective (200).
2、根据权利要求1所述的带红外监控的投影物镜系统，其特征在于，所述分光元件（500）包括分光棱镜。
2. Projection objective system with infrared monitoring according to claim 1, characterized in that the beam splitting element (500) comprises a beam splitting prism.
3、根据权利要求2所述的带红外监控的投影物镜系统，其特征在于，所述分光棱镜包括两块相互粘接的直角棱镜（501），两所述直角棱镜（501）的粘接面上设有分光膜（502）。3. The projection objective system with infrared monitoring according to claim 2, wherein the beam splitting prism comprises two mutually orthogonal rectangular prisms (501), and the bonding faces of the two right-angle prisms (501). A spectroscopic film (502) is disposed thereon.
4、根据权利要求1所述的带红外监控的投影物镜系统，其特征在于，所述分光元件包括分光片。4. The projection objective system with infrared monitoring according to claim 1, wherein the spectroscopic element comprises a beam splitter.
5、根据权利要求1-4任一项所述的带红外监控的投影物镜系统，其特征在于，所述红外监控模组（300）包括监控镜头、以及设置在所述监控镜头内的感应芯片（301）。
The projection objective system with infrared monitoring according to any one of claims 1 to 4, wherein the infrared monitoring module (300) comprises a monitoring lens and an inductive chip disposed in the monitoring lens. (301).
6、根据权利要求5所述的带红外监控的投影物镜系统，其特征在于，所述红外激光发射模组（400）包括红外激光笔。
6. The projection objective system with infrared monitoring according to claim 5, wherein the infrared laser emitting module (400) comprises an infrared laser pen.
7、根据权利要求6所述的带红外监控的投影物镜系统，其特征在于，所述投影物镜（200）包括壳体、设置在所述壳体内的第一镜片组（201）和第二镜片组（202），所述分光元件（500）位于所述第一镜片组（201）和第二镜片组（202）之间，且所述第一镜片组（201）在所述壳体内可前后移动。
7. The projection objective system with infrared monitoring according to claim 6, wherein the projection objective (200) comprises a housing, a first lens group (201) and a second lens disposed in the housing. a group (202), the light splitting element (500) is located between the first lens group (201) and the second lens group (202), and the first lens group (201) is movable in the housing mobile.
8、根据权利要求7所述的带红外监控的投影物镜系统，其特征在于，该投影物镜系统还包括自动调焦装置。
8. The projection objective system with infrared monitoring according to claim 7, wherein the projection objective system further comprises an auto-focusing device.
9、根据权利要求8所述的带红外监控的投影物镜系统，其特征在于，所述自动调焦装置包括单独的红外光源、运算处理器、以及用于推动所述第一镜片组（201）前后移动的马达，所述感应芯片（301）和所述马达均与所述运算处理器电性连接。9. The projection objective system with infrared monitoring according to claim 8, wherein said auto focus device comprises a separate infrared light source, an arithmetic processor, and for pushing said first lens group (201) The motor that moves back and forth, the sensing chip (301) and the motor are electrically connected to the arithmetic processor.
10、根据权利要求1-4任一项所述的带红外监控的投影物镜系统，其特征在于，所述红外激光发射模组（400）投射的红外激光平面与所述投影模组的投影平面靠近并平行。The projection objective system with infrared monitoring according to any one of claims 1-4, wherein the infrared laser emitting plane projected by the infrared laser emitting module (400) and the projection plane of the projection module Close and parallel.
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| PCT/CN2012/085664 WO2014082298A1 (en) | 2012-11-30 | 2012-11-30 | Projection objective lens system with infrared monitoring |
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