TWM629871U - Augmented Reality Optical System and Head Mounted Display - Google Patents

Abstract

An augmented reality optical system and a head-mounted display. An augmented reality display module is arranged in a main frame of the head-mounted display. The lower part leads to the first partially penetrating partially reflective element and the second partially penetrating partially reflective element, and after multiple reflections to converge the image to produce the effect of augmented reality; at the same time, it is installed on the inner or outer side of the main frame. There is a detachable diopter adjustment module, which includes at least one diopter adjustment lens to achieve diopter adjustment, thereby providing a clearer image for users with refractive errors, and can be flexibly removed or replaced Refraction adjustment module, greatly improving the convenience of use.

Description

Augmented Reality Optical System and Head Mounted Display

The present invention relates to the field of augmented reality technology, in particular to an augmented reality optical system and a head-mounted display.

Augmented reality (AR) is a technology derived from virtual reality (VR). Operation, adding virtual objects and information to the real space, and then presenting the combination of virtual and real information through the display.

At present, head-mounted display (Head-mounted display) is the most common augmented reality device. Head-mounted displays are usually in the form of goggles or helmets, so that the display screen is close to the wearer's eyes, and the virtual image output by the display screen is projected into the wearer's eyes, so that the virtual image and the surrounding environment are combined to obtain Information that cannot be directly obtained in reality.

However, the optical display module of the current head-mounted display cannot adjust the diopter, and cannot meet the viewing needs of users with abnormal vision. Users with abnormal vision, especially those with refractive errors including nearsightedness, farsightedness, presbyopia or astigmatism, must wear vision correction glasses to correct their vision before they can see the display clearly. Vision correction glasses It occupies a certain amount of space and weight, which increases the trouble for users and makes it easy to feel uncomfortable; and there may also be structural conflicts between the vision correction glasses and the head-mounted display, which may not necessarily be worn at the same time, which greatly affects the User experience.

The main purpose of this creation is to provide an augmented reality optical system and a head-mounted display, which combine the augmented reality display module and the refraction adjustment module, and are respectively installed on the main frame and the head-mounted display. In the detachable sub-frame, users with refractive errors can watch clear virtual images without having to wear vision correction glasses, so as to obtain a complete experience of augmented reality.

Another object of the present invention is to provide an augmented reality optical system and a head-mounted display, wherein the diopter adjustment module is installed in a detachable sub-frame, which can be easily disassembled according to the user's usage requirements or vision level and replacement, so as to improve the convenience of use and reduce the cost of use.

In order to achieve the above-mentioned purpose, the present invention provides an augmented reality optical system, which is applied to a head-mounted display having a main frame and a sub-frame. The augmented reality optical system includes an augmented reality display module and a diopter adjustment module. The augmented reality display module is installed in the main frame, and includes: a display screen for emitting an image beam; a first part The partially penetrating reflecting element is disposed below the display screen, receives the image beam from the display screen, and makes the image beam partially penetrate and partially reflect; and a second partially penetrating partially reflecting element adjacent to the first partially penetrating and partially reflecting element , so that the image beam reflected by the first partial penetrating partial reflective element is received by the second partial penetrating partial reflective element, and then reflected back to the first partial penetrating partial reflective element by the second partial penetrating partial reflective element and penetrates the first partial penetrating partial reflective element. Partially reflective element, and then injected into the human eye. The refraction adjustment module is installed in the sub-frame, and the refraction adjustment module includes at least one refraction adjustment lens, and the refraction adjustment lens is arranged corresponding to the first partially penetrating partial reflective element or the second partially penetrating partial reflective element.

According to an embodiment of the present invention, the aforementioned sub-frame is installed on the inner side of the main frame, and the diopter adjustment lens is located between the first partially penetrating and partially reflective element and the human eye.

According to the embodiment of the present invention, the aforementioned display screen is fixed at the position of the shortest optical path of the image beam.

According to an embodiment of the present invention, the sub-frame is mounted on the outer side of the main frame, and the diopter adjustment lens is located on the side of the second partially penetrating and partially reflecting element away from the human eye.

According to the embodiment of the present invention, the above-mentioned display screen can be moved up and down to adjust the distance of the display screen relative to the first partially penetrating part of the reflective element, so as to adjust the focal length.

According to the embodiment of the present invention, the first partially penetrating and partially reflecting element has an inclined angle, so as to turn the optical path of the image beam.

According to an embodiment of the present invention, the first partially penetrating and partially reflective element and the second partially penetrating and partially reflective element are flat or curved surfaces, and their surfaces are coated or laminated.

According to the embodiment of the present invention, the aforementioned dioptric adjustment lens satisfies the condition of f < -0.1 m or f > 0.1 m, where f is the focal length of the dioptric adjustment lens.

According to the embodiment of the present invention, the aforementioned dioptric adjustment lens is a myopia lens, a hyperopia lens, an astigmatism lens or a presbyopic lens.

According to an embodiment of the present invention, a lens is further provided between the aforementioned display screen and the first partially penetrating partially reflective element to guide the image beam into the first partially penetrating partially reflective element.

In addition, the present invention also provides a head-mounted display, including the aforementioned augmented reality optical system, a main frame and a sub-frame, wherein the sub-frame is detachably installed on the inner side or the outer side of the main frame.

According to the embodiment of the present invention, the aforementioned sub-frame is magnetically adsorbed or clamped to the main frame.

The following describes in detail with specific embodiments, when it is easier to understand the purpose, technical content, characteristics and effects of this creation.

The embodiments of the present invention will be further explained below with the relevant drawings. Wherever possible, in the drawings and the description, the same reference numbers refer to the same or similar components. In the drawings, shapes and thicknesses may be exaggerated for simplicity and convenience. It should be understood that the elements not particularly shown in the drawings or described in the specification have forms known to those of ordinary skill in the art. Those skilled in the art can make various changes and modifications based on the content of the present creation.

Please refer to FIG. 1 and FIG. 2 , which are respectively a cross-sectional view and an exploded view of the head-mounted display and its augmented reality optical system 10 according to the first embodiment of the invention. The augmented reality optical system 10 of this embodiment is disposed in a head-mounted display. The head-mounted display has a main frame 20 and a sub-frame 30 , and the sub-frame 30 is detachably mounted on the main frame 20 . On the outer side (right side in FIG. 1 ), for example, the sub-frame 30 can be magnetically adsorbed or clamped on the main frame 20 . The augmented reality optical system 10 includes an augmented reality display module 110 and a refraction adjustment module 120 , and the augmented reality display module 110 is installed in the main frame 20 (the left side of FIG. 1 ), and the refraction adjustment The module 120 is installed in the sub-frame 30 . A display screen 111 is provided above the augmented reality display module 110 , a first partially penetrating and partially reflecting element 112 is provided below the display screen 111 , and a second partially penetrating and partially reflecting element 112 is provided on a side away from the human eye 40 . Partially penetrates the partially reflective element 113 . The dioptric adjustment module 120 includes a dioptric adjustment lens 121 . The dioptric adjustment lens 121 is disposed corresponding to the second partially penetrating and partially reflecting element 113 and is located on the side of the second partially penetrating and partially reflecting element 113 away from the human eye 40 .

As shown in FIG. 2 , in the first embodiment, the display screen 111 emits an image beam 130 , which is sent down to the first partially penetrating and partially reflecting element 112 . The first partially penetrating partially reflective element 112 receives the image beam 130 and partially reflects the passing image beam 130 to the second partially penetrating partially reflective element 113 , and the rest passes through the first partially penetrating partially reflective element 112 . The second partially penetrating partially reflective element 113 receives the image beam 130 reflected by the first partially penetrating partially reflective element 112, and partially re-reflects the passing image beam 130 back to the first partially penetrating partially reflective element 112, while the rest passes through The second portion penetrates the partially reflective element 113 , and the image beam 130 reflected back to the first partially penetrating partially reflective element 112 is partially reflected by the first partially penetrating partially reflective element 112 , and the rest of the image beam 130 passes through the first partially penetrating partially reflective element 112 . It is introduced into the human eye 40 through the partially reflective element 112 . On the other hand, after the ambient light beam 140 passes through the dioptric adjustment lens 121 and is partially reflected by the second partially penetrating partially reflecting element 113, the rest of the ambient light beam 140 sequentially passes through the second partially penetrating partially reflecting element 113 and the second partially penetrating partially reflecting element 113. A part penetrates the partially reflective element 112 , and is partially reflected to the display screen 111 through the first partially penetrating partially reflective element 112 , and the rest penetrates the first partially penetrating partially reflective element 112 and is guided into the human eye 40 . In this way, the human eye 40 can view the virtual image from the display screen 111 superimposed in the real environment after the dioptric adjustment lens 121 has undergone dioptric correction.

The first partially penetrating and partially reflective element 112 and the second partially penetrating and partially reflective element 113 in the present invention can be respectively flat or curved, and can be coated on the surface of the flat or curved substrate to form a function Sexual coating or sticking film. In the first embodiment, the first partially penetrating partial reflective element 112 forms a single-sided coating 114, and the second partially penetrating partial reflective element forms a double-sided coating 115, so as to partially penetrate the image beam 130, The function of partial reflection, and the first partial penetrating partial reflective element 112 has an inclined angle, so that the optical path of the image beam 130 is turned, and the image beam 130 of the display screen 111 can be received and reflected to the second partial penetrating partial reflection element 113 .

The dioptric adjustment module 120 set in this creation can be provided with one or more dioptric adjustment lenses 121 correspondingly according to the needs of the user. The dioptric adjustment lens 121 is the dioptric adjustment lens 121 of other corresponding degrees of myopia. In addition, the dioptric adjustment lens 121 in the present invention can be a myopia lens, a hyperopia lens, an astigmatism lens or a presbyopic lens. Roughly speaking, the dioptric adjustment lens 121 will satisfy the condition of f < -0.1 m or f > 0.1 m, where f is the focal length of the dioptric adjustment lens 121 .

In the first embodiment, the display screen 111 is arranged to be able to move up and down to adjust the distance of the display screen 111 relative to the first partially penetrating partial reflective element 112, and the function is to adjust the focal length; when the sub-frame 30 is not installed (ie When the sub-frame 30 is installed, the user with refractive error will not be able to see the virtual image from the display screen 111 clearly, and the external environment will also be unclear. After the sub-frame 30 is installed, the user can clearly see the external environment. , but if the virtual image still looks blurry, at this time, the position of the display screen 111 can be adjusted up and down to adjust the focus, so as to correct the clarity of viewing the virtual image.

Please refer to FIG. 3 and FIG. 4 , which are respectively a cross-sectional view and an exploded view of a head-mounted display and an augmented reality optical system 10 according to a second embodiment of the invention. The difference from the first embodiment is that in the head-mounted display of this embodiment, the sub-frame 30 is detachably installed on the inner side of the main frame 20, so that the dioptric adjustment lens in the diopter adjustment module 120 is detachable. 121 is disposed corresponding to the first partially penetrating and partially reflective element 112 and is located between the first partially penetrating and partially reflective element 112 and the human eye 40 .

As shown in FIG. 4 , in the second embodiment, the display screen 111 emits an image beam 130 , which is sent down to the first partially penetrating and partially reflecting element 112 . The first partially penetrating partially reflective element 112 receives the image beam 130 and partially reflects the passing image beam 130 to the second partially penetrating partially reflective element 113 , and the rest passes through the first partially penetrating partially reflective element 112 . The second partially penetrating partially reflective element 113 receives the image beam 130 reflected by the first partially penetrating partially reflective element 112, and partially re-reflects the passing image beam 130 back to the first partially penetrating partially reflective element 112, while the rest passes through The second portion penetrates the partially reflective element 113 , and the image beam 130 reflected back to the first partially penetrating partially reflective element 112 is partially reflected by the first partially penetrating partially reflective element 112 , and the rest of the image beam 130 passes through the first partially penetrating partially reflective element 112 . The partially reflective element 112 is passed through and then introduced into the human eye 40 through the dioptric adjustment lens 121 . On the other hand, after the ambient light beam 140 is partially reflected by the second partially penetrating partially reflecting element 113, the rest of the ambient light beam 140 passes through the second partially penetrating partially reflecting element 113 and the first partially penetrating partially reflecting element 112 in sequence, and partially reflected to the display screen 111 through the first partially penetrating and partially reflective element 112 , and the rest is transmitted through the first partially penetrating and partially reflective element 112 , and then introduced into the human eye 40 through the dioptric adjustment lens 121 , so that the The eye 40 can view the virtual image from the display screen 111 superimposed in the real environment after the dioptric adjustment lens 121 has undergone dioptric correction.

In the second embodiment, the display screen 111 can be directly fixed at the position of the shortest optical path of the image beam 130 , thereby shortening the distance between the display screen 111 and the first partially penetrating and partially reflecting element 112 , thereby reducing the augmented reality optics The volume of the system 10 reduces the size of the head-mounted display; when the sub-frame 30 is not installed (ie, removed), the user with refractive error will not be able to see the virtual image on the display screen 111. The image and the external environment will also be unclear. After the sub-frame 30 is installed, the refractive error of the human eye has been corrected by the dioptric adjustment lens 121. At this time, the user has a virtual image on the display screen 111 and the external environment. All can be seen. In addition, the display screen 111 can also be set to be able to move up and down to adjust the distance of the display screen 111 relative to the first partially penetrating partial reflective element 112; In this case, the upper and lower positions of the display screen 111 can be adjusted to help adjust the focus.

In addition, the augmented reality display module 110 in the present invention may further include a lens 116 for guiding light. As shown in FIGS. 5 and 6, in the third and fourth embodiments, a lens 116 is provided between the display screen 111 and the first partially penetrating and partially reflecting element 112, and the lens 116 may be a single piece A lens or a lens group composed of multiple lenses, the lens 116 can be a convex lens, a concave lens, or any combination of a convex lens and a concave lens, etc., and the direction of the concave and convex can also be changed arbitrarily. The lens 116 can guide the image light beam 130 emitted by the display screen 111 into the first partially penetrating and partially reflective element 112, and cooperate with other elements to complete imaging.

To sum up, the augmented reality optical system and head-mounted display provided according to this creation are mainly based on the augmented reality display module in the main frame, and then combined with the movable and detachable sub-frames. The frame can be optionally added with the function of a refractive adjustment module, so that users with refractive errors do not need to wear vision correction glasses in addition to the head-mounted display, and can clearly see the superimposed on the real environment. The virtual image from the display screen in , which can improve the comfort and convenience of the augmented reality experience. Moreover, users can easily disassemble and replace the diopter adjustment module according to the purpose of use and the degree of vision. It is easy to operate, has high flexibility, and can even be shared by many people, which greatly reduces the use cost and reduces refractive errors. Users with normal vision and ordinary users with normal vision can enjoy the full experience of augmented reality.

Only the above descriptions are only preferred embodiments of the present creation, and are not intended to limit the scope of the present creation. Therefore, all equivalent changes or modifications made in accordance with the features and spirit described in the scope of the application for this creation shall be included in the scope of the patent application for this creation.

10: Augmented reality optics 20: Main Frame 30: Sub frame 40: Human Eye 110: Augmented reality display module 111: Display 112: The first part penetrates part of the reflective element 113: The second partially penetrating partially reflective element 114: Coating 115: Coating 116: Lens 120: Diopter adjustment module 121: Dioptric adjustment lens 130: Image Beam 140: Ambient Beam

FIG. 1 is a cross-sectional view of the head-mounted display according to the first embodiment of the creation. FIG. 2 is an exploded view of the augmented reality optical system according to the first embodiment of the creation. FIG. 3 is a cross-sectional view of the head-mounted display according to the second embodiment of the invention. FIG. 4 is an exploded view of the augmented reality optical system according to the second embodiment of the creation. FIG. 5 is an exploded view of the augmented reality optical system according to the third embodiment of the creation. FIG. 6 is an exploded view of the augmented reality optical system according to the fourth embodiment of the creation.

40: Human Eye

111: Display

112: The first part penetrates part of the reflective element

113: The second partially penetrating partially reflective element

114: Coating

115: Coating

121: Dioptric adjustment lens

130: Image Beam

140: Ambient Beam

Claims (12)

An augmented reality optical system is applied to a head-mounted display, the head-mounted display has a main frame and a sub-frame, the sub-frame is detachably mounted on the inner or outer side of the main frame , the augmented reality optical system includes: An augmented reality display module is installed in the main frame and includes: a display screen for emitting an image beam; a first partially penetrating and partially reflective element disposed below the display screen to receive the image beam from the display screen, and to partially transmit and partially reflect the image beam; and A second partially penetrating partially reflective element adjacent to the first partially penetrating and partially reflective element, so that the image beam reflected by the first partially penetrating and partially reflective element is received by the second partially penetrating and partially reflective element, and then received by the second partially penetrating partially reflective element. The second partially penetrating partially reflective element reflects back to the first partially penetrating partially reflective element and penetrates the first partially penetrating partially reflective element before entering a human eye; and a dioptric adjustment module installed in the sub-frame, the dioptric adjustment module includes at least one dioptric adjustment lens, and the at least one dioptric adjustment lens corresponds to the first part of the penetrating part of the reflective element or the second part The penetrating partially reflective element is set. The augmented reality optical system according to claim 1, wherein the sub-frame is mounted on the inner side of the main frame, and the diopter adjustment lens is located between the first partially penetrating and partially reflecting element and the human eye. The augmented reality optical system of claim 2, wherein the display screen is fixed at a position of the shortest optical path of the image beam. The augmented reality optical system as claimed in claim 1, wherein the sub-frame is mounted on the outer side of the main frame, and the diopter adjustment lens is located at a part of the second partially penetrating and partially reflecting element away from the human eye side. The augmented reality optical system as claimed in claim 1, wherein the display screen can be moved up and down to adjust the distance of the display screen relative to the first partially penetrating partial reflective element to adjust the focal length. The augmented reality optical system as claimed in claim 1, wherein the first partially penetrating and partially reflecting element has an inclination angle so as to turn the optical path of the image beam. The augmented reality optical system according to claim 1, wherein the first partially penetrating partial reflective element and the second partially penetrating partial reflective element are planes or curved surfaces, and their surfaces are coated or covered with a film. The augmented reality optical system according to claim 1, wherein the dioptric adjustment lens satisfies the condition of f < -0.1 m or f > 0.1 m, and f is the focal length of the dioptric adjustment lens. The augmented reality optical system according to claim 1, wherein the dioptric adjustment lens is a myopia lens, a hyperopia lens, an astigmatism lens or a presbyopic lens. The augmented reality optical system as claimed in claim 1, wherein a lens is further provided between the display screen and the first partially penetrating partially reflective element to guide the image beam into the first partially penetrating partially reflective element. A head-mounted display, comprising the augmented reality optical system according to any one of claims 1 to 10, the main frame and the sub-frame, the sub-frame being detachably mounted on the main mirror inside or outside of the rack. The head-mounted display of claim 11, wherein the sub-frame is magnetically adsorbed or clamped to the main frame.

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