CN113504692A - Camera shooting and projection integrated module and control method thereof - Google Patents
Camera shooting and projection integrated module and control method thereof Download PDFInfo
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- CN113504692A CN113504692A CN202110746642.6A CN202110746642A CN113504692A CN 113504692 A CN113504692 A CN 113504692A CN 202110746642 A CN202110746642 A CN 202110746642A CN 113504692 A CN113504692 A CN 113504692A
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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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/48—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus
- G03B17/54—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with projector
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
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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
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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
- G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
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- Computer Vision & Pattern Recognition (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
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Abstract
The invention provides a camera shooting and projection integrated module and a control method thereof, wherein the camera shooting and projection integrated module comprises a projection module, a camera shooting module, a processor and a controller, wherein the camera shooting module is used for collecting image information projected by the projection module; the processor is used for acquiring the definition of the image information according to the image information and judging whether the definition is greater than or equal to a preset definition; and the control is used for adjusting the back focal length of the projection module according to the judgment result until the definition is greater than or equal to the preset definition. According to the technical scheme, the projection module and the camera module are combined, the camera module is used for detecting the definition of the projection image detected by the projection module and adjusting the back focal length of the projection module as feedback, so that the automatic focusing of the projection module is realized, the definition of the projection image is improved, and the use experience of a user is improved.
Description
Technical Field
The invention relates to the technical field of projection equipment, in particular to a shooting and projection integrated module and a control method thereof.
Background
With the development of the micro projector technology, large-screen equipment has good visual effect, but is generally fixed in position and poor in portability. The projectors are currently being developed toward miniaturization and portability. At present, popular entertainment display equipment mainly comprises a mobile phone, a flat panel, a display and the like, and has respective advantages and disadvantages. However, although many small-screen projection devices are proposed in the prior art to improve the portability of the projector, the portable projector in the prior art has poor projection effect, cannot realize automatic focusing, and is easy to cause visual fatigue of users.
Disclosure of Invention
The invention mainly aims to provide a camera shooting and projection integrated module and a control method thereof, and aims to solve the technical problem that a portable projector in the prior art cannot automatically focus.
In order to achieve the above object, the present invention provides a camera projection integrated module, which includes a projection module, a camera module, a processor and a controller, wherein the camera module is used for collecting image information projected by the projection module; the processor is used for acquiring the definition of the image information according to the image information and judging whether the definition is greater than or equal to a preset definition; and the control is used for adjusting the back focal length of the projection module according to the judgment result until the definition is greater than or equal to the preset definition.
Optionally, the camera module includes a camera lens and a photoelectric sensor, and the photoelectric sensor is located on an optical path of the camera lens; the projection module comprises a projection lens and a micro display device, and the projection lens is positioned on the light path of the micro display device; the camera lens and the projection lens are arranged in parallel, and the shooting direction of the camera lens is parallel to the projection direction of the projection module.
Optionally, the projection module further includes a driving motor, the driving motor is electrically connected to the controller, the driving motor is connected to the projection lens, and the driving motor drives the upper projection lens to move.
Optionally, the projection lens is provided with, in order from an image side to the microdisplay device side: a first front lens group having negative refractive power and a first rear lens group having positive refractive power, the first rear lens group being close to the microdisplay device side, the first front lens group being close to the image side.
Optionally, the first front lens group is provided with, in order from an image side to the microdisplay device side: the lens comprises a first lens with negative refractive power, and a second lens with positive refractive power.
Optionally, the first rear lens group is provided with, in order from an image side to the microdisplay device side: a third lens with positive refractive power, a fourth lens with positive refractive power.
Optionally, the imaging lens is provided with, in order from the object side to the photosensor side: a second front lens group having negative refractive power and a second rear lens group having positive refractive power, the second rear lens group being close to the photosensor side, the second front lens group being close to the object side.
In addition, in order to solve the above problem, the present invention further provides a control method of a camera projection integrated module, where the control method is applied to the camera projection integrated module, and the control method includes:
collecting image information projected by a projection module;
acquiring the definition of the image information according to the image information;
judging whether the definition is greater than or equal to a preset definition;
and adjusting the back focal length of the projection module according to the judgment result until the definition is greater than or equal to the preset definition.
Optionally, the step of obtaining the definition of the image information according to the image information includes:
analyzing the image information and acquiring a black-and-white line pair image of the image information;
and calculating the definition according to the black-white line pair graph.
Optionally, the step of calculating the sharpness according to the black-and-white line pair map includes:
acquiring the white line brightness and the black line brightness in the black-and-white line pair image;
and calculating the ratio of the white line brightness to the black line brightness, and taking the ratio as the definition.
According to the technical scheme, the projection module and the camera module are combined, the camera module is used for detecting the definition of the projection image detected by the projection module and adjusting the back focal length of the projection module as feedback, so that the automatic focusing of the projection module is realized, the definition of the projection image is improved, and the use experience of a user is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a camera shooting and projection integrated module according to the present invention;
FIG. 2 is a schematic diagram of the optical path propagation of the projection lens in the integrated camera-projection module according to the present invention;
FIG. 3 is a schematic diagram of the optical path propagation of the camera lens in the integrated camera-projection module according to the present invention;
FIG. 4 is a schematic flow chart of a control method according to a first embodiment of the present invention;
FIG. 5 is a flowchart illustrating a control method according to a second embodiment of the present invention;
fig. 6 is a flowchart illustrating a control method according to a third embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 11 | |
111 | Second |
| 112 | Second |
12 | |
| 21 | |
211 | First |
| 2111 | |
2112 | |
| 2113 | Prism | 212 | First |
| 2121 | |
2122 | |
| 22 | |
30 | Driving motor |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a camera shooting and projection integrated module, please refer to fig. 1, which comprises a projection module, a camera shooting module, a processor and a controller, wherein the camera shooting module is used for collecting image information projected by the projection module; the processor is used for acquiring the definition of the image information according to the image information and judging whether the definition is greater than or equal to a preset definition; and the control is used for adjusting the back focal length of the projection module according to the judgment result until the definition is greater than or equal to the preset definition.
The camera shooting and projection integrated module can be applied to mobile phones or other handheld portable devices and the like, and in order to meet the projection function of the mobile phones in the prior art, a separately purchased projection module needs to be matched to project the screen content of the mobile phones to a curtain, a wall or other positions. However, the projection module has a larger volume and a thickness twice as thick as a mobile phone, and if the projection module is mounted with the mobile phone for a long time, the hand feeling of daily use is affected, and the projection module can only be carried independently; in addition, in the prior art, a DLP (Digital Light Processing) technology is also utilized, and a projection portion includes an illumination system, a relay system and an imaging system, however, the overall size is large, and the heat of a system chip and an LED is very high, which may cause the mobile phone to be hot after long-term use. In cell-phone and other handheld devices, how to reduce the volume, simplify the structure and be the final pursuit of trade, each components and parts all require the volume as little as possible, consequently in this application, the projection module adopts Micro-LED (miniature LED luminescence unit), Micro-OLED (miniature OLED luminescence unit) or self-luminous LCOS (Liquid Crystal on Silicon, Liquid Crystal Silicon), utilizes its self-luminous characteristic, as Micro display piece 22 or the light source of projection module to save illumination part and relay part among the projection module, very big volume saving has reduced cost and volume.
According to the invention, the projection module and the camera module are combined, the camera module can be used independently, and can also be matched with the projection module to perform feedback adjustment on a projection image of the projection module, so that the definition of the projection module is improved. As an embodiment, when the camera module is used alone, the camera module includes a camera lens 11 and a photosensor 12, the photosensor 12 is located on an optical path of the camera lens 11, and the photosensor 12 may adopt a CMOS (Complementary Metal-Oxide-Semiconductor) sensor; in the field of image pickup, an object is a scene shot at a distance, an image is a CMOS sensor, and the image pickup module can adopt mechanical focusing, that is, the focal length of the image pickup lens 11 is adjusted by driving the motor 30, or the back focal length of the image pickup lens 11 (that is, the distance between the image pickup lens 11 and the photoelectric sensor 12) is adjusted, so that the images of the objects at different positions are focused on the CMOS sensor, and the image on the CMOS sensor is the clearest.
As another embodiment, the camera module is used in cooperation with the projection module; the projection module comprises a projection lens 21 and a micro display device 22, and the projection lens 21 is positioned on the light path of the micro display device 22; in the field of projection, "object" is a microdisplay device 22 (e.g., LCOS/Micor-LED), and "image" is a distant projection position (e.g., a screen or a wall), and the projection module also needs to focus according to the distance of the projection position to form the most clear image on the projection position, according to the same principle as the above-described image capturing module. Therefore, in this embodiment, the projection module is combined with the camera module, the camera lens 11 is arranged in parallel with the projection lens 21, and the shooting direction of the camera lens 11 is parallel to the projection direction of the projection module, so as to ensure that the camera module can accurately acquire the image information of the image projected by the projection module. It should be noted that, the projection module and the camera module can also be set at a distance to ensure that the camera module can acquire the image projected by the projection module.
When the projection function is used, when projection is performed through a mobile phone or a portable handheld device, the application scenes of each projection are different, and the projection distance is different, so that the projection focal length of the projection module needs to be adjusted. The projection lens 21 operates to project the image on the microdisplay device 22 onto a remote wall or curtain. At this time, the image projected by the projection module, that is, the image projected by the projection lens 21 and located on the far wall or the curtain, is collected by the camera module in real time, and is processed by a system algorithm in the processor, so as to determine whether the projected image meets the preset definition requirement. When the requirement of the preset definition is met, the projection focal length of the projection lens 21 is kept; when the requirement of the preset definition is not satisfied, the focal length of the projection lens 21 is adjusted, for example, the focal length of the projection lens 21 is adjusted by driving the motor 30, or the back focal length of the projection lens 21 (that is, the distance between the projection lens 21 and the microdisplay device 22) is adjusted, so that the projected image presents the clearest picture at different distances, and the automatic focusing effect is realized.
According to the technical scheme, the projection module and the camera module are combined, the camera module is used for detecting the definition of the projection image detected by the projection module and adjusting the back focal length of the projection module as feedback, so that the automatic focusing of the projection module is realized, the definition of the projection image is improved, and the use experience of a user is improved.
Specifically, the projection module further includes a driving motor 30, the driving motor 30 is electrically connected to the controller, the driving motor 30 is connected to the projection lens 21, and the driving motor 30 drives the upper projection lens 21 to move so as to adjust the distance between the projection lens 21 and the microdisplay device 22. In this embodiment, the projection lens 21 is connected to the driving motor 30, so that the driving motor 30 drives the projection lens 21 to move, so as to adjust a distance between the projection lens 21 and the microdisplay device 22, that is, adjust a back focal length of the projection lens 21, thereby adjusting a definition of an image projected by the projection module, and making the image projected by the projection module clearer.
Referring to fig. 2, the projection lens 21 includes, in order from an image side to the microdisplay device: a first front lens group 212 having negative refractive power, and a first rear lens group 211 having positive refractive power, the first rear lens group 211 being close to the microdisplay device 22 side, the first front lens group 212 being close to the image side. The focal power of the first front lens group 212 is-0.062-0.06, and the focal power of the first rear lens group 211 is 0.06-0.061. The driving motor 30 can also independently drive the first front lens group 212 to move or independently drive the first rear lens group 211 to move, so as to adjust the distance between the first front lens group 212 and the first rear lens group 211, on one hand, the different distances between the first front lens group 212 and the first rear lens group 211 enable the image projected by the projection module to present the clearest picture at different distances; on the other hand, the propagation path of the light beam is changed, and the size of the image projected by the projection module is adjusted, so that the projected image is enlarged or reduced.
Specifically, the first front lens group 212 is provided with, in order from the image side to the micro display device side: a first lens 2121 having negative refractive power, a second lens 2122 having positive refractive power; the first rear lens group 211 is provided with, in order from the image side to the microdisplay device side: a third lens 2111 having positive refractive power, a fourth lens 2112 having positive refractive power; the surface of the first lens 2121 is a glass aspheric surface, and the focal power range of the first lens 2121 can be set between-0.15 and-0.152; the surface of the second lens 2122 is a glass spherical surface, and the focal power range of the second lens 2122 can be set between 0.09 and 0.091; the surface type of the third lens 2111 is a glass cemented sphere, and the focal power range of the third lens 2111 can be set between 0.014 and 0.0145; the surface of the fourth lens 2112 is a glass aspheric surface, and the focal power range of the fourth lens 2112 can be set between 0.046 and 0.0461; a prism 2113 is further provided between the fourth lens 2112 and the microdisplay device 22, and the prism 2113 is used for collecting light. In this embodiment, the structures of the first front lens group 212 and the first rear lens group 211 in the projection lens 21 and the focal power of the lenses thereof are reasonably adjusted, so as to improve the display effect of the projection module and further improve the user experience of the shooting and projection integrated module of the present invention.
It can be understood that, like the projection module, the camera module can also adjust the distance between the camera lens 11 and the photoelectric sensor 12 through the driving motor 30, that is, adjust the back focal length of the camera lens 11, so as to realize the focusing of the camera module and improve the definition of the image shot by the camera module. The imaging lens 11 is provided with, in order from the object side to the photoelectric sensor 12 side: a second front lens group 111 having negative refractive power, and a second rear lens group 112 having positive refractive power, the second rear lens group 112 being close to the photosensor side 12, the second front lens 111 group being close to the object side. The focal power of the second front lens group 111 is-0.0117-0.01165, and the focal power of the second rear lens group 112 is 0.0336-0.03361.
The second front lens group 111 and the second rear lens group 112 can also be respectively and independently connected with a driving motor, the driving motor can adjust the distance between the second front lens group 111 and the second rear lens group 112 to achieve zooming in or zooming out of a shot image, for example, a scene 2 meters away needs to be shot, the driving motor is needed to adjust the distance between the second front lens group 111 and the second rear lens group 112 to be 1mm, so that the image on the photoelectric sensor 12 is most clear; when shooting a subject 10cm away, the distance between the second front lens group 111 and the second rear lens group 112 needs to be adjusted by the driving motor 30 to be 3mm, so that the image on the photoelectric sensor 12 is most clear. It should be noted that the driving motor in the projection module and the driving motor in the camera module are independent and do not affect each other, the structures of the second front lens group 111 and the second rear lens group 112 in the camera lens 11 are also different from the structures of the first front lens group 212 and the first rear lens group 211 in the projection lens 21, and the structures of the camera lens 11 and the projection lens 21 can be adjusted according to the requirements of the application scene, so as to improve the compatibility and wide adaptability of the camera and projection integrated module of the present invention.
Specifically, referring to fig. 3, the structure of the camera lens 11 is also improved in the present embodiment, as shown in fig. 3, a plurality of lenses are sequentially disposed from left to right, and according to the sequence from left to right in fig. 3, the second front lens group 111 is sequentially disposed: a glass spherical lens with positive focal power, a glass spherical lens with negative focal power, a glass cemented spherical lens with positive focal power, a glass spherical lens with positive focal power; the second rear lens group 112 is sequentially provided with: a glass spherical lens having a positive optical power, a glass cemented spherical lens having a negative optical power, a glass spherical lens having a positive optical power, a glass cemented spherical lens having a positive optical power, and a glass spherical lens having a negative optical power. In the embodiment, by adding a combination mode of a plurality of lenses, the path of the light beam in the camera lens 11 is adjusted, the shooting effect of the camera module is improved, and the user experience of the camera projection integrated module is further improved.
In addition, in order to solve the above problems, the present invention further provides a control method of a camera projection integrated module, where the control method is applied to the camera projection integrated module, and please refer to fig. 4, the control method includes the following steps:
step S10: collecting image information projected by a projection module;
step S20: obtaining the definition of the image information according to the image information
Step S30: judging whether the definition is greater than or equal to a preset definition;
step S40: and adjusting the back focal length of the projection module according to the judgment result until the definition is greater than or equal to the preset definition.
The control method is applied to the camera shooting and projection integrated module, the camera shooting and projection integrated module is applied to a mobile phone or other portable handheld devices, and due to the fact that the application scenes of projection are different every time when the mobile phone or the portable handheld devices are used for projection, the projection distances are different, focusing is needed to be carried out according to the distance of the projection position when the projection is carried out, and the projected image is formed most clearly on the projection position. In order to realize the automatic focusing function, firstly, after the projection function is used, the projection module projects an image on a far wall surface or a curtain, at this time, the camera module collects the image projected by the projection module in real time, namely, the image projected by the projection lens 21 and located on the far wall surface or the curtain, analyzes the image to obtain the definition of the image, and judges whether the definition meets the preset definition requirement. When the requirement of the preset definition is met, keeping the current focal length for projection; and when the requirement of the preset definition is not met, adjusting the focal length of the projection module, acquiring the image again through the camera module, analyzing the definition of the acquired image, repeating the step S10 and the step S20, and adjusting the focal length of the projection module until the definition of the image meets the requirement of the preset definition.
According to the technical scheme, the projection module and the camera module are combined, the camera module is used for detecting the definition of the projection image detected by the projection module and adjusting the back focal length of the projection module as feedback, so that the automatic focusing of the projection module is realized, the definition of the projection image is improved, and the use experience of a user is improved.
Further, referring to fig. 5, the step S20 specifically includes:
step S21: analyzing the image information and acquiring a black-and-white line pair image of the image information;
step S22: and calculating the definition according to the black-white line pair graph.
After the image projected by the projection module is obtained, the image is analyzed to obtain the black-and-white line pair diagram of the graph, namely, the image projected by the projection module is presented in a mode of combining black lines and white lines, the brightness of the black lines and the brightness of the white lines are obtained through the black-and-white line pair diagram, and therefore the definition of the image is calculated through the brightness of the black lines and the brightness of the white lines. When the requirement of the preset definition is met, keeping the current focal length for projection; and when the requirement of the preset definition is not met, adjusting the focal length of the projection module, acquiring the image again through the camera module, analyzing the definition of the acquired image, repeating the step S10 and the step S20, and adjusting the focal length of the projection module until the definition of the image meets the requirement of the preset definition.
Further, referring to fig. 6, the step S22 specifically includes:
step S221: acquiring the white line brightness and the black line brightness in the black-and-white line pair image;
step S222: and calculating the ratio of the white line brightness to the black line brightness, and taking the ratio as the definition.
After the black-and-white line pair image of the image projected by the projection module is obtained, the brightness of the black line and the brightness of the white line in the black-and-white line pair image are further obtained, and the definition of the image is calculated according to the brightness of the black line and the brightness of the white line. The definition is a ratio of the white line luminance to the black line luminance, and specifically, the definition is white line luminance/black line luminance, for example, when the white line luminance is 50 and the black line luminance is 1, the definition is 50; the preset definition threshold is 50-70, it can be understood that this embodiment includes but is not limited to the above-mentioned scheme, the preset definition may be adjusted according to different application scenes, and the fact that the preset definition of the image projected by the projection module reaches the preset definition means that a user can clearly and comfortably see the image projected by the projection module under the observation of naked eyes, for example, when the preset definition is 60, when the ratio of the white line brightness to the black line brightness is greater than or equal to 60, it indicates that the definition meets the requirement of the preset definition.
When the definition is less than when predetermineeing the definition, the back focal length of projection module among the integrated module of projection of increase camera shooting or the back focal length of projection module among the integrated module of projection of reducing camera shooting.
When the definition meets the requirement of the preset definition, the projection focal length of the projection module is kept; and when the definition does not meet the requirement of the preset definition, adjusting the focal length of the projection module. Specifically, the position of the projection lens 21 in the projection module can be adjusted by the driving motor, so as to adjust the distance between the projection lens 21 and the microdisplay device 22 in the projection module, that is, adjust the back focal length of the projection module, and further adjust the definition of the image projected by the projection module, so that the image projected by the projection module is clearer. In addition, the projection lens 21 includes a first front lens group 212 and a first rear lens group 211, the first front lens group 212 and the first rear lens group 211 are disposed at an interval, and the optical paths of the first front lens group 212 and the first rear lens group 211 are overlapped. On one hand, the distance between the first front lens group 212 and the first rear lens group 211 is different, so that the image projected by the projection module presents the clearest picture at different distances; on the other hand, the propagation path of the light beam is changed, and the size of the image projected by the projection module is adjusted, so that the projected image is enlarged or reduced.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides an integrated module of projection of making a video recording, its characterized in that, the integrated module of projection of making a video recording includes:
a projection module;
the camera module is used for collecting the image information projected by the projection module;
the processor is used for acquiring the definition of the image information according to the image information and judging whether the definition is greater than or equal to a preset definition;
and the controller is used for adjusting the back focal length of the projection module according to the judgment result until the definition is greater than or equal to the preset definition.
2. The camera-shooting projection integrated module according to claim 1, wherein the camera-shooting module comprises a camera lens and a photoelectric sensor, and the photoelectric sensor is positioned on an optical path of the camera lens;
the projection module comprises a projection lens and a micro display device, and the projection lens is positioned on the light path of the micro display device;
the camera lens and the projection lens are arranged in parallel, and the shooting direction of the camera lens is parallel to the projection direction of the projection module.
3. The camera-shooting projection integration module of claim 2, wherein the projection module further comprises a driving motor, the driving motor is electrically connected to the controller, the driving motor is connected to the projection lens, and the driving motor drives the upper projection lens to move.
4. The camera projection integration module of claim 2, wherein the projection lens is provided with, in order from an image side to the microdisplay device side: a first front lens group having negative refractive power and a first rear lens group having positive refractive power, the first rear lens group being close to the microdisplay device side, the first front lens group being close to the image side.
5. The camera projection integration module of claim 4 wherein the first front lens group is sequentially disposed from an image side to the microdisplay device side: the lens comprises a first lens with negative refractive power, and a second lens with positive refractive power.
6. The camera projection integration module of claim 4 wherein the first rear lens group is sequentially disposed from an image side to the microdisplay device side: a third lens with positive refractive power, a fourth lens with positive refractive power.
7. The integrated camera-projector module of claim 2, wherein the camera lens comprises, in order from the object side to the photosensor side: a second front lens group having negative refractive power and a second rear lens group having positive refractive power, the second rear lens group being close to the photosensor side, the second front lens group being close to the object side.
8. A control method of a camera shooting projection integrated module, which is applied to the camera shooting projection integrated module according to any one of claims 1-7, the control method comprising:
collecting image information projected by a projection module;
acquiring the definition of the image information according to the image information;
judging whether the definition is greater than or equal to a preset definition;
and adjusting the back focal length of the projection module according to the judgment result until the definition is greater than or equal to the preset definition.
9. The control method according to claim 8, wherein the step of obtaining the sharpness of the image information from the image information comprises:
analyzing the image information and acquiring a black-and-white line pair image of the image information;
and calculating the definition according to the black-white line pair graph.
10. The control method according to claim 9, wherein the step of calculating the sharpness from the black-and-white line pair map comprises:
acquiring the white line brightness and the black line brightness in the black-and-white line pair image;
and calculating the ratio of the white line brightness to the black line brightness, and taking the ratio as the definition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110746642.6A CN113504692B (en) | 2021-06-30 | 2021-06-30 | Camera shooting and projection integrated module and control method thereof |
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| CN114812439A (en) * | 2022-04-14 | 2022-07-29 | 深圳市菲森科技有限公司 | Focusing method of projection imaging lens group of structured light three-dimensional measurement system |
| CN115394253A (en) * | 2022-09-22 | 2022-11-25 | 福州大学 | Integrated optical structure with self-luminous display and image sensor co-layer mixed arrangement |
| CN115561958A (en) * | 2022-09-22 | 2023-01-03 | 福州大学 | Laminated optical engine structure integrating micro-projection display and camera optical module |
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| CN115561958A (en) * | 2022-09-22 | 2023-01-03 | 福州大学 | Laminated optical engine structure integrating micro-projection display and camera optical module |
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