技术领域technical field
本发明涉及一种虚像显示装置，特别涉及一种用于移动设备的虚像显示装置。The invention relates to a virtual image display device, in particular to a virtual image display device for mobile equipment.
背景技术Background technique
随着移动通讯技术的发展，智能手机、智能手表或平板电脑等移动设备或穿戴式设备已成为现代人生活中不可或缺的配备之一。以智能手表为例，目前智能手表的设计皆是以微型化或轻量化为主流，且智能手表因受限于轻薄短小的要求，其显示屏幕的尺寸大多介于1～2英寸之间。With the development of mobile communication technology, mobile devices or wearable devices such as smartphones, smart watches or tablet computers have become one of the indispensable equipment in modern life. Take smart watches as an example. At present, the design of smart watches is mainly based on miniaturization or light weight, and the size of the display screen of smart watches is mostly between 1 to 2 inches due to the limitation of thinness and shortness.
然而，对于许多用户而言，较小尺寸的显示屏幕难以清楚地观看显示屏幕上的信息，而增加显示屏幕的尺寸则容易造成穿戴或携带上的不便。因此，如何在放大显示屏幕与方便携带之间作权衡，便成为移动设备设计上的一大难题。However, for many users, it is difficult to clearly view the information on the display screen with a smaller size, and increasing the size of the display screen will easily cause inconvenience in wearing or carrying. Therefore, how to make a trade-off between the enlarged display screen and the convenience of portability has become a major problem in the design of mobile devices.
发明内容Contents of the invention
本发明实施例的目的在于，提供一种用于移动设备的虚像显示装置，以在不增加显示屏幕尺寸的情况下，有效地放大显示屏幕上的信息。The purpose of the embodiments of the present invention is to provide a virtual image display device for a mobile device, so as to effectively enlarge the information on the display screen without increasing the size of the display screen.
本发明的用于移动设备的虚像显示装置包括凹面镜。其中凹面镜的反射面设有光学镀膜层，且凹面镜枢接于包括图像显示面的移动设备的一端，以使得凹面镜可相对于移动设备进行枢转。其中凹面镜的反射面用于反射移动设备的图像显示面的图像光线至用户的眼睛，以形成用户所见的放大虚像。The virtual image display device for mobile equipment of the present invention includes a concave mirror. The reflective surface of the concave mirror is provided with an optical coating layer, and the concave mirror is pivotally connected to one end of the mobile device including the image display surface, so that the concave mirror can pivot relative to the mobile device. The reflective surface of the concave mirror is used to reflect the image light on the image display surface of the mobile device to the user's eyes, so as to form a magnified virtual image seen by the user.
优选地，前述的光学镀膜层可以为半穿透半反射光学镀膜层或全反射光学镀膜层。Preferably, the aforementioned optical coating layer may be a semi-transmissive and semi-reflective optical coating layer or a total reflection optical coating layer.
优选地，前述的光学镀膜层可以为偏极光学镀膜层或非偏极光学镀膜层。其中若光学镀膜层为偏极光学镀膜层，则图像光线的偏极方向与光学镀膜层的偏极方向为相同或相异的。Preferably, the aforementioned optical coating layer may be a polarized optical coating layer or a non-polarized optical coating layer. Wherein if the optical coating layer is a polarized optical coating layer, the polarization direction of the image light is the same as or different from that of the optical coating layer.
优选地，前述的凹面镜可相对于移动设备进行枢转，以使得凹面镜与移动设备之间形成大于或者等于0度，并且小于或者等于90度的夹角。其中在用户看到放大虚像时，夹角大于或者等于20度，并且小于或者等于80度。Preferably, the aforementioned concave mirror can be pivoted relative to the mobile device, so that an angle greater than or equal to 0 degree and less than or equal to 90 degrees is formed between the concave mirror and the mobile device. Wherein, when the user sees the enlarged virtual image, the included angle is greater than or equal to 20 degrees and less than or equal to 80 degrees.
此外，优选地，在用户看到放大虚像时，图像光线自移动设备的图像显示面投射至凹面镜的反射面的距离小于凹面镜的焦距。In addition, preferably, when the user sees the magnified virtual image, the distance from the image light projected from the image display surface of the mobile device to the reflection surface of the concave mirror is smaller than the focal length of the concave mirror.
优选地，前述的凹面镜可以为平凹镜、凸凹镜或双凹镜。Preferably, the aforementioned concave mirror may be a plano-concave mirror, a convex-concave mirror or a double-concave mirror.
优选地，前述的移动设备可以为智能手表、智能手机、平板电脑或个人数字助理(PDA)。Preferably, the aforementioned mobile device may be a smart watch, a smart phone, a tablet computer or a personal digital assistant (PDA).
承上所述，根据本发明的用于移动设备的虚像显示装置，其可具有一个或多个下述优点：Based on the above, according to the virtual image display device for mobile devices of the present invention, it may have one or more of the following advantages:
(1)本发明的用于移动设备的虚像显示装置利用凹面镜有效地放大用户所见的移动设备的显示图像，以使得用户在携带或配戴较小显示屏幕尺寸的移动设备的同时，亦能清楚地观看移动设备的显示屏幕上的信息。(1) The virtual image display device for mobile equipment of the present invention utilizes a concave mirror to effectively magnify the display image of the mobile equipment seen by the user, so that the user can carry or wear a mobile equipment with a smaller display screen size while also The information on the display screen of the mobile device can be viewed clearly.
(2)本发明的用于移动设备的虚像显示装置将凹面镜枢接于移动设备的一端，以便于用户收折凹面镜。(2) In the virtual image display device for mobile devices of the present invention, the concave mirror is pivotally connected to one end of the mobile device, so that the user can fold the concave mirror.
(3)本发明的用于移动设备的虚像显示装置可利用半穿透半反射光学镀膜层，以使得用户能够透过凹面镜观看到外界的景物。(3) The virtual image display device for mobile devices of the present invention can use a semi-transmissive and semi-reflective optical coating layer, so that the user can watch the outside world through the concave mirror.
(4)本发明的用于移动设备的虚像显示装置不仅可利用偏极光学镀膜层提高用户所见的放大虚像的亮度，更可透过光学镀膜层及图像光线之间的偏极方向来调整图像光线的穿透与否。(4) The virtual image display device for mobile devices of the present invention can not only improve the brightness of the magnified virtual image seen by the user by using the polarized optical coating layer, but also adjust the polarization direction between the optical coating layer and the image light Whether the image light is transmitted or not.
为了便于进一步理解本发明的技术特征及所达到的功效，下面将以配合优选的实施例详细说明如后。In order to facilitate a further understanding of the technical features and achieved effects of the present invention, the following will be described in detail in conjunction with preferred embodiments.
附图说明Description of drawings
图1为本发明的用于移动设备的虚像显示装置的第一实施例的示意图。FIG. 1 is a schematic diagram of a first embodiment of a virtual image display device for a mobile device according to the present invention.
图2为本发明的用于移动设备的虚像显示装置的第二实施例的示意图。FIG. 2 is a schematic diagram of a second embodiment of a virtual image display device for mobile devices according to the present invention.
图3A及图3B为本发明的用于移动设备的虚像显示装置的第二实施例的凹面镜收折时，光学镀膜层及图像光线之间的偏极方向与图像光线穿透与否的示意图。3A and 3B are schematic diagrams of the polarization direction between the optical coating layer and the image light and whether the image light penetrates or not when the concave mirror of the second embodiment of the virtual image display device for mobile devices of the present invention is folded .
图4A、图4B及图4C为本发明的用于移动设备的虚像显示装置的凹面镜分别为平凹镜、凸凹镜及双凹镜的示意图。FIG. 4A , FIG. 4B and FIG. 4C are schematic diagrams of the concave mirrors of the virtual image display device for mobile devices according to the present invention, which are plano-concave mirrors, convex-concave mirrors and double-concave mirrors, respectively.
附图标记说明Explanation of reference signs
10：移动设备10: Mobile devices
11：图像显示面11: Image display surface
12：图像光线12: image light
20：凹面镜20: concave mirror
21：反射面21: reflective surface
22：光学镀膜层22: Optical coating layer
30：枢接部30: pivot joint
40：用户的眼睛40: User's eyes
50：景物50: Scenery
51：景物的光线51: The light of the scene
60：平凹镜60: plano-concave mirror
70：凸凹镜70: Convex mirror
80：双凹镜80: double concave mirror
具体实施方式detailed description
以下将参照相关图式，说明根据本发明的用于移动设备的虚像显示装置的实施例，为使便于理解，下述实施例中的相同元件以相同的符号标示来说明。Embodiments of a virtual image display device for a mobile device according to the present invention will be described below with reference to related drawings. For ease of understanding, the same components in the following embodiments are described with the same symbols.
参照图1、图4A、图4B及图4C，图1为本发明的用于移动设备的虚像显示装置的第一实施例的示意图。图4A、图4B及图4C为本发明的用于移动设备的虚像显示装置的凹面镜分别为平凹镜、凸凹镜及双凹镜的示意图。Referring to FIG. 1 , FIG. 4A , FIG. 4B and FIG. 4C , FIG. 1 is a schematic diagram of a first embodiment of a virtual image display device for a mobile device according to the present invention. FIG. 4A , FIG. 4B and FIG. 4C are schematic diagrams of the concave mirrors of the virtual image display device for mobile devices according to the present invention, which are plano-concave mirrors, convex-concave mirrors and double-concave mirrors, respectively.
本发明的用于移动设备10的虚像显示装置包括凹面镜20。其中，凹面镜20可以为平凹镜60、凸凹镜70或双凹镜80。而移动设备10可以为智能手表、智能手机、平板电脑或个人数字助理(PDA)，但本发明不限于此，任何可显示图像的移动设备10，均应属于本发明所请求保护的范围。The virtual image display device for the mobile device 10 of the present invention includes a concave mirror 20 . Wherein, the concave mirror 20 may be a plano-concave mirror 60 , a convex-concave mirror 70 or a double-concave mirror 80 . The mobile device 10 may be a smart watch, a smart phone, a tablet computer or a personal digital assistant (PDA), but the present invention is not limited thereto. Any mobile device 10 capable of displaying images shall fall within the scope of protection claimed by the present invention.
凹面镜20可以通过枢接部30枢接于包括图像显示面11的移动设备10的一端，以使得凹面镜20可相对于移动设备10进行枢转，使得凹面镜20与移动设备10之间可形成大于或者等于0度，并且小于或者等于90度的夹角θ。其中，夹角θ可以为凹面镜20的反射面21两端所构成的平面与移动设备10的图像显示面11之间的夹角。The concave mirror 20 can be pivotally connected to one end of the mobile device 10 including the image display surface 11 through the pivot joint 30, so that the concave mirror 20 can pivot relative to the mobile device 10, so that the concave mirror 20 can be connected to the mobile device 10. An included angle θ greater than or equal to 0 degrees and less than or equal to 90 degrees is formed. Wherein, the included angle θ may be the included angle between the plane formed by the two ends of the reflective surface 21 of the concave mirror 20 and the image display surface 11 of the mobile device 10 .
凹面镜20的反射面21可以为以蒸镀、溅镀等方式设置的光学镀膜层22，使得移动设备10的图像显示面11所投射的图像光线12能够通过反射面21反射至用户的眼睛40，以形成用户所见的放大虚像。The reflective surface 21 of the concave mirror 20 can be an optical coating layer 22 provided by evaporation, sputtering, etc., so that the image light 12 projected by the image display surface 11 of the mobile device 10 can be reflected to the user's eyes 40 through the reflective surface 21 , to form a magnified virtual image as seen by the user.
在第一实施例中，光学镀膜层22可以为全反射光学镀膜层，因此当移动设备10的图像显示面11的图像光线12投射至凹面镜20时，可通过设有全反射光学镀膜层的反射面21将图像光线12全反射至用户的眼睛40，进而有效地放大移动设备10的图像显示面11所显示的图像。In the first embodiment, the optical coating layer 22 can be a total reflection optical coating layer, so when the image light 12 of the image display surface 11 of the mobile device 10 is projected onto the concave mirror 20, it can pass through the optical coating layer provided with the total reflection optical coating layer. The reflective surface 21 totally reflects the image light 12 to the user's eyes 40 , thereby effectively amplifying the image displayed on the image display surface 11 of the mobile device 10 .
此外，当凹面镜20为收折状态时(如图4A、图4B及图4C所示)，凹面镜20与移动设备10之间的夹角θ可以为0度。接着，当用户欲通过凹面镜20观看放大虚像时，则需将凹面镜20通过枢接部30朝着远离移动设备10的方向进行枢转，使得凹面镜20形成使用状态(如图1所示)，并且与移动设备10之间形成大于或者等于20度，并且小于或者等于80度的夹角θ。In addition, when the concave mirror 20 is folded (as shown in FIG. 4A , FIG. 4B and FIG. 4C ), the angle θ between the concave mirror 20 and the mobile device 10 may be 0 degrees. Then, when the user wants to view the magnified virtual image through the concave mirror 20, the concave mirror 20 needs to be pivoted toward a direction away from the mobile device 10 through the pivot joint 30, so that the concave mirror 20 forms a use state (as shown in FIG. 1 ), and forms an included angle θ greater than or equal to 20 degrees and less than or equal to 80 degrees with the mobile device 10.
此外，当用户欲通过凹面镜20观看放大虚像时，图像光线12自移动设备10的图像显示面11投射至凹面镜20的反射面21的距离d需小于凹面镜20的焦距。如此一来便可有效地放大移动设备10的图像显示面11所显示的图像。其中，用户所见的放大虚像的大小可以约为图像显示面11所显示的图像的大小的1.5倍至3倍。In addition, when the user wants to view the magnified virtual image through the concave mirror 20 , the distance d from the image display surface 11 of the mobile device 10 to the reflective surface 21 of the concave mirror 20 needs to be smaller than the focal length of the concave mirror 20 . In this way, the image displayed on the image display surface 11 of the mobile device 10 can be effectively enlarged. Wherein, the size of the magnified virtual image seen by the user may be about 1.5 times to 3 times the size of the image displayed on the image display surface 11 .
参照图2、图3A及图3B，图2为本发明的用于移动设备的虚像显示装置的第二实施例的示意图。图3A及图3B为本发明的用于移动设备的虚像显示装置的第二实施例的凹面镜收折时，光学镀膜层及图像光线之间的偏极方向与图像光线穿透与否的示意图。其中，第一实施例与第二实施例的差别仅在于光学镀膜层22，因此在第二实施例中仅针对光学镀膜层22进行描述，其余元件则不在赘述。Referring to FIG. 2 , FIG. 3A and FIG. 3B , FIG. 2 is a schematic diagram of a second embodiment of a virtual image display device for a mobile device according to the present invention. 3A and 3B are schematic diagrams of the polarization direction between the optical coating layer and the image light and whether the image light penetrates or not when the concave mirror of the second embodiment of the virtual image display device for mobile devices of the present invention is folded . Wherein, the difference between the first embodiment and the second embodiment is only the optical coating layer 22 , so only the optical coating layer 22 will be described in the second embodiment, and the rest of the components will not be repeated.
在第二实施例中，光学镀膜层22可以为半穿透半反射光学镀膜层，因此凹面镜20不仅可通过设有半穿透半反射光学镀膜层的反射面21将图像光线12反射至用户的眼睛40，以有效地放大移动设备10的图像显示面11所显示的图像，更可使得外界景物50的光线51穿透凹面镜20而投射至用户的眼睛40以使得用户能够透过凹面镜20观看到外界的景物50。In the second embodiment, the optical coating layer 22 can be a semi-transmitting and semi-reflecting optical coating layer, so the concave mirror 20 can not only reflect the image light 12 to the user through the reflective surface 21 provided with the semi-transmitting and semi-reflecting optical coating layer the eyes 40 of the mobile device 10 to effectively magnify the image displayed on the image display surface 11 of the mobile device 10, and also allow the light 51 of the external scene 50 to pass through the concave mirror 20 and project to the user's eyes 40 so that the user can see through the concave mirror 20 watching the scene 50 of the outside world.
此外，光学镀膜层22还可以为偏极光学镀膜层或非偏极光学镀膜层。其中，当凹面镜20为使用状态时(如图2所示)，若光学镀膜层22为偏极光学镀膜层，则可将光学镀膜层22的偏极方向调整为垂直于图像光线12的偏极方向(光学镀膜层22的偏极方向可以为P偏极，图像光线12的偏极方向可以为S偏极)，以利用偏极光学镀膜层提高用户所见的放大虚像的亮度。In addition, the optical coating layer 22 can also be a polarized optical coating layer or a non-polarized optical coating layer. Wherein, when the concave mirror 20 is in use (as shown in FIG. 2 ), if the optical coating layer 22 is a polarized optical coating layer, the polarization direction of the optical coating layer 22 can be adjusted to be perpendicular to the polarization direction of the image light 12. polar direction (the polarization direction of the optical coating layer 22 can be P polarization, and the polarization direction of the image light 12 can be S polarization), so that the polarized optical coating layer can be used to improve the brightness of the magnified virtual image seen by the user.
此外，当凹面镜20为收折状态时(如图3A及图3B所示)，若图像光线12的偏极方向与光学镀膜层22的偏极方向相同(如互相平行)，则图像光线12便可穿透凹面镜20而投射至用户的眼睛40，进而使得用户可透过凹面镜20观看到移动设备10的图像显示面11所显示的图像；反之，若图像光线12的偏极方向与光学镀膜层22的偏极方向相异(如互相垂直)，则图像光线12便无法穿透凹面镜20，进而使得用户无法透过凹面镜20观看到移动设备10的图像显示面11所显示的图像。In addition, when the concave mirror 20 is in a retracted state (as shown in FIGS. 3A and 3B ), if the polarization direction of the image light 12 is the same as that of the optical coating layer 22 (such as parallel to each other), the image light 12 It can pass through the concave mirror 20 and be projected to the user's eyes 40, so that the user can watch the image displayed on the image display surface 11 of the mobile device 10 through the concave mirror 20; otherwise, if the polarization direction of the image light 12 is the same as If the polarization directions of the optical coating layers 22 are different (such as being perpendicular to each other), the image light 12 cannot pass through the concave mirror 20, so that the user cannot see the image displayed on the image display surface 11 of the mobile device 10 through the concave mirror 20. image.
以上所述仅为示例，而非为限制。任何未脱离本发明的精神与范畴，而对其进行的等效修改或变更，均应包括于本发明的权利要求书的保护范围中。The foregoing are examples only, not limitations. Any equivalent modification or change made without departing from the spirit and scope of the present invention shall be included in the protection scope of the claims of the present invention.
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| CN106918915A (en)* | 2017-05-16 | 2017-07-04 | 核桃智能科技（常州）有限公司 | Near-eye display system |
| CN109613688A (en)* | 2017-10-05 | 2019-04-12 | 怡利电子工业股份有限公司 | virtual display |
| CN109613688B (en)* | 2017-10-05 | 2021-10-15 | 怡利电子工业股份有限公司 | virtual display |
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| WO2021212897A1 (en)* | 2020-04-20 | 2021-10-28 | 华为技术有限公司 | Desktop display apparatus and electronic device |
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| TW201624175A (en) | 2016-07-01 |
| TWI563361B (en) | 2016-12-21 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | Application publication date:20161005 | |
| WW01 | Invention patent application withdrawn after publication |