Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
It should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In one aspect of the embodiment of the present application, as shown in fig. 1, a projection display module is provided, which includes an installation frame 100 and a projection lens group 200, wherein an opening 110 is disposed on the installation frame 100, the projection lens group 200 is connected to the installation frame 100, and an image plane of the projection lens group 200 corresponds to the opening 110, so that when a display device is located on the image plane side of the projection lens group 200, the projection lens group 200 can smoothly receive an outgoing light beam of the display device through the opening 110. The mounting frame 100 can be disposed in a docking manner with the display device, and the opening 110 on the mounting frame 100 corresponds to the display surface 310 of the display device, so that the display surface 310 of the display device can smoothly emit light beams to the projection lens group 200 through the opening 110 on the mounting frame 100.
In order to ensure that the image projected by the projection lens group 200 is relatively clear, when the mounting bracket 100 is mounted on a display device, the display surface 310 of the display device is exactly located at the position of the image surface of the projection lens group 200, that is, the image surface of the projection lens group 200 coincides with the display surface 310 of the display device, and in order to further improve the user experience, the mounting bracket 100 may be further provided with a limiting structure, that is, when the mounting bracket 100 is mounted on the display device, the display device is limited by the limiting structure, so that the user can rapidly mount the display device in place in a blind operation manner, and the display surface 310 coincides with the image surface, on the basis, the mounting bracket 100 may be further provided with a mounting mark, and by observing whether the display surface 310 of the display device is located in the mounting mark, the user is helped to rapidly judge whether the display device is mounted in place, further shortening the time required for installation before use by the user.
It should be noted that, the specific docking manner of the mounting bracket 100 of the projection display module and the display device is not limited in the embodiment of the present application, as long as the mounting bracket 100 of the projection display module and the display device can be connected with each other. For example, the display device can be aligned and fixed by a snap connection, which is stable in structure and easy to detach, but the snap connection has specific requirements on the structural size and shape of the display device, and the display device exceeding the size threshold may be difficult to mount, or the display device can be aligned and fixed by magnetic attraction, adhesion, and the like, which has less limitation on the alignment relationship between the display device and the mounting frame 100.
The projection display module of this application embodiment can cooperate in special dedicated display device's projection function to realize, sets up and carries out detachable connection projection and alternate segregation's use and storage separately with this special dedicated display device connection structure of mutually supporting, and in addition very important one side can also be applied to various existing display device among the prior art, for example cell-phone, children's wrist-watch, motion bracelet, wear recreation equipment etc.. For example, when the display device is a mobile phone, the projection display module in the embodiment of the present application can be disposed at a desired position on the display screen of the mobile phone in a magnetic attraction or pasting manner, so that the partial image in a certain selection area range on the screen of the mobile phone is displayed through the projection display module, and when the partial image in other area ranges needs to be displayed in a moving manner, the projection display module in the embodiment of the present application can be moved to a corresponding position along the screen of the mobile phone.
Install projection mirror group 200 in display device back through mounting bracket 100 according to above-mentioned mounting means, can be at start-up display device, and when the demonstration has image information of certain luminance on display device's display surface 310, the light beam that forms image information is by the display surface 310 through the battery of lens in the opening 110 incidence projection mirror group 200, under the imaging of battery of lens, thereby cooperate the diaphragm to carry out projection display in one side that mounting bracket 100 was kept away from to projection mirror group 200, the projection display curtain can be by the wall, ground, the palm etc. acts as, do not restrict in this application.
From this, can install projection mirror group 200 in different display device through mounting bracket 100 to make different display device can correspond the extension and realize the projection function, form projection equipment promptly, borrow the use scene separately by different display device, also make projection equipment's use scene no longer limit and fixed, can cooperate display device to merge into the use scene, effectively promoted projection equipment's use flexibility.
In order to further improve the imaging effect of the lens group 200, as shown in fig. 2, the lens group 200 may include a negative lens group 230 and a positive lens group 240 sequentially arranged along the light exiting direction, that is, the image plane is located on the light entering side of the negative lens group 230, and the projection plane is located on the light exiting side of the positive lens group 240. In different embodiments, the number of lenses included in each of the negative lens group 230 and the positive lens group 240 may be different, and may be appropriately selected and set according to actual requirements.
Alternatively, as shown in fig. 2, the diaphragm 233 may be disposed such that the center of the diaphragm 233 coincides with the optical axis of the projection lens group 200, and the plane of the diaphragm 233 is perpendicular to the optical axis. When the diaphragm 233 is arranged, the position of the diaphragm 233 in the negative lens group 230 can be reasonably selected, different parts of light beams are selected by the diaphragm 233 to participate in imaging, that is, the part of light beams with better imaging quality can be selected, and the part of light beams with poorer imaging quality is blocked, so that the imaging quality is improved, and meanwhile, the radial size of the projection lens group 200 can be reduced by reasonably selecting the position of the diaphragm 233.
In different embodiments, the stop 233 may be located in the negative lens group 230, between the negative lens group 230 and the positive lens group 240, or in the positive lens group 240, for example, as shown in fig. 2, taking the stop 233 in the negative lens group 230 as an example: after being converged by the biconvex lens 231 of the negative lens group 230, the light beam enters the first cylindrical lens 232, exits to the diaphragm 233 under the magnifying effect of the first cylindrical lens 232, and is shielded and filtered by the diaphragm 233, so that the light beam with better quality enters the subsequent second cylindrical lens, thereby improving the imaging quality of the projection lens group 200.
Optionally, in order to ensure that projected images can be clearly presented when the projection lens group 200 is installed in different display devices and used in different scenes, the projection lens group 200 may have a certain zoom capability, for example, the zoom ratio of the projection lens group 200 is set to be in a range of 1:1.5 to 2:1.5, which can satisfy the projection distance in daily use, and meanwhile, when the projection distance is not changed and the zoom ratio is increased, the size of a picture that can be projected by the projection lens group 200 is also increased, so that the zoom ratio can be reasonably set according to actual needs.
In implementing the zooming function of the projection lens group 200, in some embodiments, zooming can be implemented by using an automatic zooming technique, for example, using a liquid zoom lens, using an electric adjusting lens, or the like; in other embodiments, a manual zoom function may also be used, and the manual zoom will be described as an example below:
referring to fig. 1, the projection lens assembly 200 further includes an outer barrel 210, the outer barrel 210 includes a lower barrel 211 and an upper barrel 212, the negative lens assembly 230 is disposed in the lower barrel 211, the positive lens assembly 240 is disposed in the upper barrel 212, the lower barrel 211 and the upper barrel 212 are connected by a screw thread, the outer barrel 210 is connected with the mounting frame 100 by the lower barrel 211, and those skilled in the art should know that, in order to ensure normal projection of the projection lens assembly 200, light holes should be disposed at two opposite ends of the lower barrel 211 and the upper barrel 212, so that light beams can smoothly enter the negative lens assembly 230 and exit from the positive lens assembly 240.
As shown in fig. 1, when the focal length of the projection lens group 200 needs to be adjusted, the upper tube 212 may be rotated clockwise or counterclockwise (determined according to the focal length to be adjusted), so that the upper tube 212 may be rotated relative to the lower tube 211 through a screw, and while rotating, the axial distance of the upper tube 212 relative to the lower tube 211 may also be correspondingly changed, that is, the distance between the negative lens group 230 and the positive lens group 240 is changed, so as to correspondingly adjust the focal length of the projection lens group 200, so that when the projection distance is not changed, the projection lens group 200 can clearly project an image on a curtain. The manual thread focusing mode can not only reduce the parts required for zooming and reduce the volume of the projection lens group 200, but also realize fine adjustment by improving the thread density, thereby being convenient for realizing rapid and accurate focusing. In order to improve the user experience, an identifier may be further disposed on the outer barrel 210, and the focal length corresponding to the rotation direction is marked to adjust the size, so as to assist the user to get on hand quickly. Optionally, for further improvement of flexibility and variability of the projection display module, the projection lens assembly 200 and the mounting bracket 100 may be detachably connected to each other, so that the quick-release and quick-installation functions can be realized when different mounting brackets 100 or different projection lens assemblies 200 need to be replaced. The zoom ratio and the projection images with different sizes can be achieved by replacing different projection lens sets 200, and the different display devices with wider ranges can be matched by replacing different mounting brackets 100, so that the scenes into which the projection display module can be integrated can be further enlarged.
As shown in fig. 1, one of the ways of detachably connecting the projection lens assembly 200 to the mounting frame 100 is shown: clamping protrusions 220 are arranged on the periphery of the lower barrel 211, clamping grooves 120 are arranged on the inner edge of the opening 110 in the mounting frame 100, the number of the clamping protrusions 220 is matched with the number of the clamping grooves 120, and of course, the number of the clamping grooves 120 can be larger than that of the clamping protrusions 220; the positions of the clamping protrusion 220 and the clamping groove 120 should be matched with each other to ensure that the clamping protrusion and the clamping groove can be accurately aligned and clamped; the clamping protrusions 220 may be annularly and uniformly spaced along the periphery of the lower drawing, or may be disposed at unequal intervals.
The clamping groove 120 includes a sliding connection section 121 formed along the axial direction of the opening 110 from one side of the mounting projection lens group 200 to the inside, and a clamping connection section 122 connected to the end of the sliding connection section 121, and the sliding connection section 121 and the clamping connection section 122 form a preset included angle. The engaging protrusion 220 and the engaging groove 120 may be respectively provided with one, two, three, four, etc.
Referring to fig. 1, when installing projection mirror group 200, first, projection mirror group 200 is close to mounting bracket 100 downwards, and joint protrusion 220 is aligned with clamping groove 120, so that joint protrusion 220 firstly enters clamping groove 120 downwards along sliding section 121, when joint protrusion 220 is located at the joint of sliding section 121 and clamping section 122, rotary projection mirror group 200 rotates by a certain angle, so that joint protrusion 220 on projection mirror group 200 slides in along clamping section 122, so that projection mirror group 200 and mounting bracket 100 form a joint limit along opening 110 axial direction. The sliding connection section 121 and the clamping connection section 122 form a preset included angle, the preset included angle can be an acute angle, a right angle and an obtuse angle, and when the preset included angle is the right angle, the sliding connection section 121 and the clamping connection section 122 form an L shape.
In addition, in order to improve the joint stability of the projection lens group 200 and the mounting bracket 100, an elastic member can be further arranged on the inner wall of the joint section 122, so that when the joint bulge 220 slides into the joint section 122, the elastic member can be extruded in a manner of restoring force, the elastic member is utilized to improve the joint stability, and the projection lens group 200 is not easy to slide out of the mounting bracket 100. For example: an arc surface or an inclined surface may be further disposed at a junction or a transition of the sliding connection section 121 and the clamping connection section 122, and an elastic member is disposed on a side wall away from the arc surface or the inclined surface, so that, when the clamping connection protrusion 220 slides into the clamping groove 120 and is located at the junction of the sliding connection section 121 and the clamping connection section 122, a component force along the inclined surface or the arc surface may be generated by the clamping connection protrusion 220 through the arc surface or the inclined surface, so as to directly guide the clamping connection protrusion 220 to slide into the clamping connection section 122, and when the clamping connection protrusion 220 slides along the arc surface or the inclined surface, the elastic member is deformed correspondingly by compression, and after the clamping connection protrusion 220 is located at the clamping connection section 122, the elastic member is deformed again to limit the clamping connection protrusion 220 in the clamping connection section 122, so that, when the projection lens group 200 is mounted, the projection lens group 200 only needs to be pressed into the clamping groove 120 in a vertical direction, and the projection lens group 200 does not need to be rotated.
Of course, in other embodiments, various detachable connection modes such as a threaded connection and the like may be adopted, and are not described herein again. For further application scope of improvement projection display module assembly, make mounting bracket 100 can match and install in not unidimensional display device, can set up mounting bracket 100 into size adjustable structure, for example mounting bracket 100 has horizontal alignment jig and vertical alignment jig, be provided with horizontal joint structure on horizontal alignment jig, be provided with vertical joint structure on vertical alignment jig, therefore, make mounting bracket 100 can correspond the regulation according to display device's horizontal size and vertical size, thereby make the horizontal joint structure and the vertical joint structure of mounting bracket can correspond along horizontal and vertical joint display device, accomplish and be connected with display device, thereby correspond and realize the projection function.
Optionally, referring to fig. 2, the negative lens group 230 has a negative refractive index, and the positive lens group 240 has a positive refractive index, so that after the light beam of the display surface 310 enters the negative lens group 230, the light beam can be diffused by the negative lens group 230, and the quality of the diffused light beam can be improved by combining with the diaphragm 233, and the diffused light beam is converged again by the positive lens group 240 and imaged on the curtain.
In one embodiment: referring to fig. 2, the negative lens group 230 includes a biconvex lens 231, a first cylindrical lens 232, and a second cylindrical lens 234, which are sequentially disposed, and the positive lens group 240 includes a planoconvex lens 241; the projection lens assembly 200 further includes a diaphragm 233, the diaphragm 233 is disposed between the first cylindrical lens 232 and the second cylindrical lens 234, that is, the biconvex lens 231, the first cylindrical lens 232, the diaphragm 233, the second cylindrical lens 234 and the planoconvex lens 241 are sequentially disposed along the light-emitting direction, the incident surface of the first cylindrical lens 232 is a convex surface, the emergent surface of the second cylindrical lens 234 is a convex surface, and the emergent surface of the planoconvex lens 241 is a convex surface, so that the light beam of the display surface 310 is converged after entering the biconvex lens 231 through the opening 110, then enters the first cylindrical lens 232 through the incident surface of the first cylindrical lens 232, and then exits through the first cylindrical lens 232 after being diffused, and then, under the action of the diaphragm 233, the light beam with better quality is selected to enter the second cylindrical lens 234, exits through the emergent surface of the second cylindrical lens 234 under the converging action of the second cylindrical lens 234, then enters the planoconvex lens 241, and exits through the emergent surface of the planoconvex lens 241 under the converging action of the planoconvex lens 241, and finally forming an image on the curtain. It should be understood that, in order to enable the projection display module of the embodiment of the present application to better meet the use requirement of a user, other optical elements may be further added on the basis of the structure, so as to have a better display effect.
In some embodiments, the projection display module itself has a display device, and the display device is fixedly disposed (detachably and fixedly disposed) on the mounting frame 100, and the following description will be made by taking different display devices as examples:
one of them: when the display device is a self-luminous display device, such as a watch, a mobile phone, a tablet, a computer, etc. having an OLED, miniLED, or micro led screen, the mounting bracket 100 may be installed on the watch, the mobile phone, the tablet, etc. to provide a light source or an image source for the projection display module by using the self-luminous characteristic.
The other one is as follows: when the display device is a liquid crystal display device, such as a watch, a mobile phone, a tablet, a computer, etc. having an LCD screen, the mounting bracket 100 may be installed on the watch, the mobile phone, the tablet, etc. to provide a light source or an image source for the projection display module by using the light-emitting characteristic of the LCD backplane.
One more of them: as shown in fig. 3, when the display device is a liquid crystal on silicon display device, at this time, a light supplement device 250 and a polarization beam splitting element 260 may be further disposed on the light exit side of the liquid crystal on silicon display device, an image displayed by the liquid crystal on silicon display device and a light beam emitted from the light supplement device 250 respectively pass through the polarization beam splitting element 260 and the projection mirror group 200 in sequence and then are projected and displayed, so that the light supplement device 250 collimates and captures the image on the surface of the liquid crystal on silicon display device, the light supplement device 250 includes but is not limited to an LED or a laser light source, and when the light supplement device 250 is a laser light source, a speckle elimination unit may be further disposed, so that the laser light beam has a better application effect; when the light supplement device 250 is an LED light source, a collimating element may be further disposed, so that the provided light beam is a collimated light beam.
Based on the imaging specificity of the LCOS display device, a polarization beam splitter 260 (PBS) can be further added to the projection mirror assembly 200, and the PBS is absorbed into the surface of the LCOS display device through the PBS 260 and then projected and imaged through the projection mirror assembly 200.
On the other hand of the embodiment of this application, provide a wearing equipment, including wearing display device, and above-mentioned any kind of projection display module that does not contain display device itself, will wear display device detachable fixed the setting on projection display module's mounting bracket 100 (for example joint, spiro union etc.), with this, be applied to projection display module in the wearing equipment, make wearing equipment expand the projection function, combine wearing equipment's use scene, the variety that the user used can be further enriched, for example whenever and wherever the user needs show or when sharing the display screen who wears display device, can form images on the curtain through projection mirror group 200 in the projection display module, realize and many people's sharing, the less pain point that is difficult to show and share of wearing equipment picture has been solved.
Of course, the display device of the projection display module can be used as a wearable display device in wearable equipment, such as a self-luminous display device, a liquid crystal display device, or a liquid crystal on silicon display device. On this basis, if the wearable display device is a liquid crystal on silicon display device, the required light supplement device, the polarization beam splitting element, and the like can all adopt the examples and descriptions of the display device, and are not described herein again.
Optionally, the wearing equipment still includes memory and the controller of being connected with wearing display device electricity respectively, the storage has a plurality of images of predetermineeing in the memory, the controller can select to transfer a plurality of images of predetermineeing in the memory and projection display, therefore, when sharing or show, the user can wear display device through the operation, thereby make the controller of wearing display device can transfer the predetermined image of prestoring in the memory according to user's instruction, and show it on the display surface of wearing display device, correspond by projection mirror group 200 with the image projection on the curtain, so, make projection display module assembly and user possess certain interactivity. The wearable device may be a smart watch, a head-mounted device, or the like.
When the wearable device is applied to an interactive scene shared by multiple people, for example, when a multiplayer game CS is performed, during navigation, a map may be pre-stored in the memory of the wearable display device, and when a user needs to retrieve the map or zoom in or out the map, the pre-stored map may be retrieved by the controller, and an instruction is sent by the controller to correspondingly complete the map zooming in or out, in this process, the projection display may be completed in the whole course by the projection lens group 200 in the projection display module.
In addition, the wearing equipment further comprises a GPS arranged on the wearing display device, and the GPS is electrically connected with the controller and used for displaying the positioning position of the GPS in a mode of superposing on the image displayed by projection. For example, when the controller has called out a map, the controller may also locate the current wearable device by the GPS and mark the map correspondingly according to the location information, so that the user can correspondingly and clearly locate the location when the map is displayed by using the projection lens group 200 in a projection manner.
In addition, the wearable device can be further provided with a communication module electrically connected with the controller, the positions of other wearable devices can be obtained through the communication module, and the positions of other wearable devices are marked on a map, so that the position sharing of a user of the current wearable device and other users can be conveniently realized, the position sharing among multiple users can be conveniently realized, and the position sharing is particularly suitable for the position sharing during the multi-user game; the method can also be applied to travel sharing during driving, namely when the user A wears the wearable device and is in the process of taking a bus, the user B can call the map, and therefore the respective position information of the user A and the user B is displayed on the map.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.