CN210109463U - Near-to-eye display device - Google Patents
Near-to-eye display device Download PDFInfo
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- CN210109463U CN210109463U CN201920782436.9U CN201920782436U CN210109463U CN 210109463 U CN210109463 U CN 210109463U CN 201920782436 U CN201920782436 U CN 201920782436U CN 210109463 U CN210109463 U CN 210109463U
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Abstract
The utility model discloses a near-to-eye display device, include: the LED Micro-display comprises a red Micro-LED Micro-display, a green Micro-LED Micro-display, a blue Micro-LED Micro-display, a light-combining prism and an eyepiece unit; the red Micro-LED Micro-display is positioned on one side of a first light incoming surface of the light combining prism, the green Micro-LED Micro-display is positioned on one side of a second light incoming surface of the light combining prism, and the blue Micro-LED Micro-display is positioned on one side of a third light incoming surface of the light combining prism; the first light incident surface and the third light incident surface of the light combination prism are arranged oppositely, and the second light incident surface of the light combination prism is arranged oppositely to the light emergent surface of the light combination prism; the light combining prism is used for combining the emergent light of the red Micro-LED Micro-display, the green Micro-LED Micro-display and the blue Micro-LED Micro-display into one beam; the eyepiece unit is positioned on the light-emitting surface of the light-combining prism and used for transmitting the emergent light passing through the light-combining prism and the live-action light to human eyes. The embodiment of the utility model provides a near-to-eye display device has realized the colored demonstration of hi-lite.
Description
Technical Field
The embodiment of the utility model provides a relate to optics near-to-eye display technology field, especially relate to a near-to-eye display device.
Background
Head-mounted displays (HMDs) transmit optical signals to eyes through various display devices, can achieve different effects such as Virtual Reality (VR), Augmented Reality (AR), and mixed Reality (Mix Reality, MR), and have characteristics such as immersive performance, interactivity, and improved situational awareness. The display device can project virtual images to human eyes when people look up surrounding environment, the projected virtual images can be superposed on the real world sensed by users, and the display device is widely applied to the fields of virtual reality and augmented reality such as military, industrial design and manufacture, medical treatment, entertainment and the like.
In the prior art, an image source of a Display device includes a Liquid Crystal on Silicon (LCoS) Display, an Organic Light Emitting Diode (OLED) Display, a Liquid Crystal Display (LCD) Display, and a Micro-LED Micro-array (Micro-LED) Display. The LCoS display, the OLED display and the LCD display are low in display brightness, and the Micro-LED display is mostly in monochrome display and difficult to colorize, so that the user experience of the display device is poor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a near-to-eye display device to realize near-to-eye display device's high brightness color display.
An embodiment of the utility model provides a near-to-eye display device, include:
the LED Micro-display comprises a red Micro-LED Micro-display, a green Micro-LED Micro-display, a blue Micro-LED Micro-display, a light-combining prism and an eyepiece unit;
the red Micro-LED Micro-display is positioned on one side of a first light incoming surface of the light combining prism, the green Micro-LED Micro-display is positioned on one side of a second light incoming surface of the light combining prism, and the blue Micro-LED Micro-display is positioned on one side of a third light incoming surface of the light combining prism;
the first light incident surface and the third light incident surface of the light combination prism are arranged oppositely, and the second light incident surface of the light combination prism is arranged oppositely to the light emergent surface of the light combination prism;
the light combining prism is used for combining the emergent light of the red Micro-LED Micro-display, the green Micro-LED Micro-display and the blue Micro-LED Micro-display into one beam;
the eyepiece unit is positioned on the light-emitting surface of the light-combining prism and used for transmitting emergent light passing through the light-combining prism and live-action light to human eyes.
Optionally, the near-eye display device further includes:
a first polarizing plate, a second polarizing plate, and a third polarizing plate;
the first polaroid is positioned between the red Micro-LED Micro-display and the first light incident surface of the light combining prism, the second polaroid is positioned between the green Micro-LED Micro-display and the second light incident surface of the light combining prism, and the third polaroid is positioned between the blue Micro-LED Micro-display and the third light incident surface of the light combining prism;
the light-combining prism includes:
a first coated surface and a second coated surface;
the first film coating surface is used for reflecting emergent light passing through the third polaroid;
the second film coating surface is used for reflecting emergent light passing through the first polaroid;
the first film coating surface and the second film coating surface both transmit emergent light passing through the second polaroid.
Optionally, the first polarizer is the same as the third polarizer in polarization direction of emergent light, and the second polarizer in polarization direction of emergent light is orthogonal to the first polarizer in polarization direction of emergent light.
Optionally, the emergent light passing through the first polarizer and the third polarizer is s-polarized light, and the emergent light passing through the second polarizer is p-polarized light;
or emergent light passing through the first polaroid and the third polaroid is p-polarized light, and emergent light passing through the second polaroid is s-polarized light.
Optionally, the first film-coated surface is a long-wave-pass bicolor filter film, and the second film-coated surface is a short-wave-pass bicolor filter film.
Optionally, the reflectance of the first plated film facing blue s-polarized light is greater than 95%, the transmittance of the first plated film facing blue p-polarized light is greater than 95%, and the transmittance of the first plated film facing red light and green light is greater than 95%;
the reflectance of the second plating film to red s-polarized light is greater than 95%, the transmittance of the second plating film to red p-polarized light is greater than 95%, and the transmittance of the second plating film to blue light and green light is greater than 95%;
or the reflectivity of the first coating film facing blue p-polarized light is more than 95%, the transmissivity of the first coating film facing blue s-polarized light is more than 95%, and the transmissivity of the first coating film facing red light and green light is more than 95%;
the reflectance of the second plating film to red p-polarized light is greater than 95%, the transmittance of the second plating film to red s-polarized light is greater than 95%, and the transmittance of the second plating film to blue light and green light is greater than 95%.
Optionally, an included angle between the first film-coated surface and the second polarizer is 45 degrees, and an included angle between the first film-coated surface and the third polarizer is 45 degrees;
the included angle between the second film-coated surface and the second polaroid is 45 degrees, and the included angle between the second film-coated surface and the first polaroid is 45 degrees.
Optionally, the light-combining prism is a regular quadrangular prism;
the regular quadrangular prism includes four triangular prisms.
Optionally, the eyepiece unit includes:
a main prism and a reflection lens;
the reflecting lens is positioned at one end of the main prism far away from the light-combining prism;
the reflection lens comprises a reflection surface, and the reflection surface is positioned at one end of the reflection lens, which is far away from the main prism, and is used for reflecting emergent light of the main prism;
the main body prism comprises a semi-transparent semi-reflecting surface, and the semi-transparent semi-reflecting surface is used for reflecting light rays reflected by the reflecting surface to human eyes and transmitting real scene light to the human eyes.
Optionally, an included angle between the semi-transmitting and semi-reflecting surface and the optical axis of the main prism is 45 °.
The embodiment of the utility model provides a technical scheme utilizes monochromatic red Micro-LED Micro display, green Micro-LED Micro display and blue Micro-LED Micro display as the image source, through closing light prism with red Micro-LED Micro display, green Micro-LED Micro display and blue Micro-LED Micro display's emergent light closes into a branch of, and will be through the emergent light and the live-action light transmission to people's eye that close light prism through the eyepiece unit, the problem that near-to-eye display device luminance and colorization can't be compromise among the prior art has been solved, near-to-eye display device's high brightness color display has been realized.
Drawings
FIG. 1 is a schematic structural diagram of a Micro-LED display using RGB three-color LED combination method in the prior art;
fig. 2 is a schematic structural diagram of a near-eye display device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another near-eye display device according to an embodiment of the present invention;
FIG. 4 is a spectrum diagram of the outgoing light of a green Micro-LED microdisplay and a blue Micro-LED microdisplay;
FIG. 5 is a functional diagram of a first polarizer and a third polarizer;
fig. 6 is a functional diagram of the second polarizer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Head-mounted displays (HMDs) transmit optical signals to eyes through various display devices, can achieve different effects such as Virtual Reality (VR), Augmented Reality (AR), Mixed Reality (MR), and have characteristics such as immersive performance, interactivity, and improved situational awareness. The display device can project virtual images to human eyes when people look up surrounding environment, the projected virtual images can be superposed on the real world sensed by users, and the display device is widely applied to the fields of virtual reality and augmented reality such as military, industrial design and manufacture, medical treatment, entertainment and the like.
Currently, an image source of a Display device includes a liquid Crystal on Silicon (LCoS) Display, an Organic Light Emitting Diode (OLED) Display, a Liquid Crystal Display (LCD) Display, and a Micro-LED Micro-array (Micro-LED) Display. The LCoS display, the OLED display and the LCD display are low in display brightness and not beneficial to outdoor use of users.
Micro-LED is a new generation display technology, and compared with the existing OLED technology, the Micro-LED has the advantages of higher brightness, better luminous efficiency and lower power consumption. The existing Micro-LED display colorization technology comprises an RGB three-color LED combination method and a UV/blue light LED + luminous medium method.
Fig. 1 is a schematic structural view of a Micro-LED display adopting an RGB three-color LED combination method in the prior art, and as shown in fig. 1, each pixel P includes three LEDs, namely a blue LED P1, a green LED P2, and a red LED P3, so that the Micro-LED display can be colored, but since each pixel P includes three LEDs, it is difficult to make the size of the pixel P small, and thus the technical requirements of a Head-mounted display (HMD) cannot be met.
The UV/blue light LED + luminescent medium method can be called as quantum dot colorization technology, the luminescent medium is generally fluorescent powder or quantum dots, and the technology is immature and has great technical difficulty.
Therefore, the Micro-LED display is mostly monochrome display, and colorization is difficult, so that the user experience of the display device is poor.
Based on the technical problem, the embodiment of the utility model provides a near-to-eye display device utilizes monochromatic red Micro-LED Micro display, green Micro-LED Micro display and blue Micro-LED Micro display as the image source, closes the emergent light of red Micro-LED Micro display, green Micro-LED Micro display and blue Micro-LED Micro display into a branch through closing the light prism to emergent light and the real scene light transmission of closing the light prism to people's eye through the eyepiece unit, realize near-to-eye display device's high brightness color display.
Above is the core thought of the utility model, will combine the attached drawing in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model clearly, describe completely. Based on the embodiments in the present invention, under the premise that creative work is not done by ordinary skilled in the art, all other embodiments obtained all belong to the protection scope of the present invention.
Fig. 2 is a schematic structural view of a near-to-eye display device provided by an embodiment of the present invention, as shown in fig. 2, an embodiment of the present invention provides a near-to-eye display device including: the Micro-LED Micro-display comprises a red Micro-LED Micro-display 11, a green Micro-LED Micro-display 12, a blue Micro-LED Micro-display 13, a light-combining prism 14 and an eyepiece unit 15.
The light combining prism 14 is used for combining the emergent light of the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 into one beam, and the eyepiece unit 15 is used for transmitting the emergent light passing through the light combining prism and the live-action light to human eyes.
Fig. 3 is a schematic structural view of another near-to-eye display device provided in the embodiment of the present invention, as shown in fig. 3, the red Micro-LED Micro display 11 is located on one side of the first light incident surface 141 of the light combining prism 14, the green Micro-LED Micro display 12 is located on one side of the second light incident surface 142 of the light combining prism, and the blue Micro-LED Micro display 13 is located on one side of the third light incident surface 143 of the light combining prism 14. The first light incident surface 141 and the third light incident surface 143 of the light combining prism 14 are disposed opposite to each other, and the second light incident surface 142 of the light combining prism 14 is disposed opposite to the light emitting surface 144 of the light combining prism 14. The eyepiece unit 15 is located on the light emitting surface 144 of the light combining prism 14, and is configured to transmit the light emitted by the light combining prism 14 and the real-scene light to human eyes.
The embodiment of the utility model provides a technical scheme utilizes monochromatic red Micro-LED Micro display 11, green Micro-LED Micro display 12 and blue Micro-LED Micro display 13 as the image source, through closing optical prism 14 with red Micro-LED Micro display 11, green Micro-LED Micro display 12 and blue Micro-LED Micro display 13's emergent light closes for a branch, and through eyepiece unit 15 with emergent light and the real scene light transmission to people's eye that closes optical prism 14, the problem that near-to-eye display device luminance and colorization can't be compromise among the prior art has been solved, the high brightness color display of near-to-eye display device has been realized.
As shown in fig. 3, the near-to-eye display device according to an embodiment of the present invention further includes: a first polarizer 16, a second polarizer 17 and a third polarizer 18. The first polarizer 16 is located between the red Micro-LED microdisplay 11 and the first light incident surface 141 of the light combining prism 14, the second polarizer 17 is located between the green Micro-LED microdisplay 12 and the second light incident surface 142 of the light combining prism 14, and the third polarizer 18 is located between the blue Micro-LED microdisplay 13 and the third light incident surface 143 of the light combining prism 14. The light-combining prism 14 includes: a first coating side 145 and a second coating side 146. The first film coating surface 145 is used for reflecting the emergent light passing through the third polarizing film 18, the second film coating surface 146 is used for reflecting the emergent light passing through the first polarizing film 16, and the first film coating surface 145 and the second film coating surface 146 both transmit the emergent light passing through the second polarizing film 17.
Wherein, the red Micro-LED Micro-display 11 emits light in red waveband, the green Micro-LED Micro-display 12 emits visible light in green waveband, and the blue Micro-LED Micro-display 13 emits visible light in blue waveband. Fig. 4 is a spectrogram of the outgoing light of the green Micro-LED Micro-display and the blue Micro-LED Micro-display, as shown in fig. 4, the abscissa is the wavelength, the ordinate is the light intensity, the full width at half maximum (FWHM) of the green light emitted by the green Micro-LED Micro-display 12 is 22nm, the full width at half maximum (FWHM) of the blue light emitted by the blue Micro-LED Micro-display 13 is 20nm, the red Micro-LED Micro-display 11 emits the light of the red waveband, the green Micro-LED Micro-display 12 emits the visible light of the green waveband, and the visible light linewidths of the blue waveband emitted by the blue Micro-LED Micro-display 13 are all less than 25nm and extremely narrow, so that the near-eye display device has good colority.
With continued reference to fig. 3, the light exiting the red Micro-LED microdisplay 11 is converted into polarized light by the first polarizer 16, then enters the x-cube 14, is reflected by the second coated surface 146 and transmitted to the eyepiece unit 15, exits the x-cube 14, enters the eyepiece unit 15 and is transmitted to the human eye. The outgoing light of the blue Micro-LED Micro-display 13 is converted into polarized light by the third polarizer 18, then enters the light combining prism 14, is reflected by the first film coating surface 145 and is transmitted to the eyepiece unit 15, exits the light combining prism 14, enters the eyepiece unit 15, and is transmitted to the human eye. The outgoing light of the green Micro-LED Micro-display 12 is converted into polarized light by the second polarizer 18, then enters the light combining prism 14, is transmitted to the eyepiece unit 15 through the first coated surface 145 and the second coated surface 146, exits the light combining prism 14, enters the eyepiece unit 15, and is transmitted to the human eye. Therefore, the emergent light of the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 is combined into one beam by the light combining prism 14 and transmitted to human eyes.
Optionally, the polarization direction of the emergent light passing through the first polarizing plate 16 is the same as that of the emergent light passing through the third polarizing plate 18, and the polarization direction of the emergent light passing through the second polarizing plate 17 is orthogonal to that of the emergent light passing through the first polarizing plate 16.
The polarization directions of the red light and the blue light emitted by the first polarizing film 16 and the third polarizing film 18 are the same, the blue light emitted by the third polarizing film 18 is reflected by the first film coating surface 145, and the red light emitted by the first polarizing film 16 is reflected by the second film coating surface 146. The polarization direction of the green light emitted by the second polarizer 17 is orthogonal to the polarization direction of the red light emitted by the first polarizer 16, and the first film coating surface 145 and the second film coating surface 146 both transmit the green light emitted by the second polarizer 17, so that the emitted lights of the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 are combined into one beam.
Optionally, the emergent light passing through the first polarizer 16 and the third polarizer 18 is s-polarized light, and the emergent light passing through the second polarizer 17 is p-polarized light; alternatively, the light emitted from the first polarizing plate 16 and the third polarizing plate 18 is p-polarized light, and the light emitted from the second polarizing plate 17 is s-polarized light.
For example, fig. 5 is a functional schematic diagram of the first polarizer and the third polarizer, and fig. 6 is a functional schematic diagram of the second polarizer, as shown in fig. 5 and fig. 6, after red light emitted by the red Micro-LED microdisplay 11 passes through the first polarizer 16, only S light with a polarization direction parallel to the incident plane can pass through, and therefore, the red light emitted by the red Micro-LED microdisplay 11 is converted into red S-polarized light after passing through the first polarizer 16. Similarly, after the red light emitted from the blue Micro-LED microdisplay 13 passes through the third polarizer 18, only s light with the polarization direction perpendicular to the incident surface can pass through the third polarizer, and therefore, the blue light emitted from the blue Micro-LED microdisplay 13 is converted into blue s-polarized light after passing through the first polarizer 17.
The red and blue light exiting through the first polarizer 16 and the third polarizer 18 are both s-polarized light, the first coated surface 145 reflects the blue s-polarized light exiting through the third polarizer 18, and the second coated surface 146 reflects the red s-polarized light exiting through the first polarizer 16. The green light emitted by the second polarizer 17 is p-polarized light, and because the p-polarized light is orthogonal to the s-polarized light, the first film coating surface 145 and the second film coating surface 146 both transmit the green p-polarized light emitted by the second polarizer 17, so that the emitted light of the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 is combined into one beam.
Alternatively, the red and blue light exiting through the first polarizer 16 and the third polarizer 18 are both p-polarized light, the first coated surface 145 reflects the blue p-polarized light exiting through the third polarizer 18, and the second coated surface 146 reflects the red p-polarized light exiting through the first polarizer 16. The green light emitted by the second polarizer 17 is s-polarized light, and because the s-polarized light is orthogonal to the p-polarized light, the first film coating surface 145 and the second film coating surface 146 both transmit the green s-polarized light emitted by the second polarizer 17, so that the emitted lights of the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 are combined into one beam.
Optionally, the first film coating surface 145 is a long-wave-pass bicolor filter film, and the second film coating surface 146 is a short-wave-pass bicolor filter film.
The first film coating surface 145 is a long-wave-pass bicolor filter film, blue light with a shorter wavelength is reflected by the first film coating surface 145, and red light and green light are transmitted by the first film coating surface 145; the second coated surface 146 is a short-wavelength-pass dichroic filter, red light with a longer wavelength is reflected by the second coated surface 146, and blue light and green light are transmitted through the second coated surface 146. So that blue light emitted from the blue Micro-LED Micro-display 13 is reflected by the first coated surface 145, transmitted by the second coated surface 146, and transmitted to the eyepiece unit 15. So that red light emitted from the red Micro-LED Micro-display 11 is reflected by the second coated surface 146, transmitted through the first coated surface 145, and transmitted to the eyepiece unit 15. The green light emitted by the green Micro-LED Micro-display 12 is transmitted through the first film coating surface 145 and the second film coating surface 146 and is directly transmitted to the eyepiece unit 15, so that the emergent light of the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 is combined into one beam.
Optionally, the reflectivity of the first film-coated surface 145 to the blue s-polarized light is greater than 95%, the transmittance of the first film-coated surface 145 to the blue p-polarized light is greater than 95%, and the transmittance of the first film-coated surface 145 to the red light and the green light is greater than 95%; the reflectance of the second coated surface 146 to red s-polarized light is greater than 95%, the transmittance of the second coated surface 146 to red p-polarized light is greater than 95%, and the transmittance of the second coated surface 146 to blue light and green light is greater than 95%.
Or, the reflectivity of the first coated surface 145 to blue p-polarized light is greater than 95%, the transmissivity of the first coated surface 145 to blue s-polarized light is greater than 95%, and the transmissivity of the first coated surface 145 to red light and green light is greater than 95%; the reflectance of the second coated surface 146 to red p-polarized light is greater than 95%, the transmittance of the second coated surface 146 to red s-polarized light is greater than 95%, and the transmittance of the second coated surface 146 to blue light and green light is greater than 95%.
Blue light emitted by the blue Micro-LED Micro-display 13 is converted into blue s-polarized light through the third polarizing film 18, the reflectivity of the first film coating surface 145 to the blue s-polarized light is larger than 95%, the transmissivity of the second film coating surface 146 to the blue light is larger than 95%, therefore, the blue s-polarized light can pass through the second film coating surface 146, and the blue s-polarized light is reflected by the first film coating surface 145 and then enters the eyepiece unit 15, so that the blue s-polarized light is transmitted to human eyes. The red light emitted by the red Micro-LED Micro-display 11 is converted into red s-polarized light by the first polarizer 16, the reflectivity of the second film-coated surface 146 to the red s-polarized light is larger than 95%, and the transmissivity of the first film-coated surface 145 to the red light is larger than 95%, so that the red s-polarized light can pass through the first film-coated surface 145, and the red s-polarized light is reflected by the second film-coated surface 146 and then enters the eyepiece unit 15, so as to be transmitted to human eyes. The green light emitted from the green Micro-LED microdisplay 12 is converted into green p-polarized light by the second polarizer 17, the transmittance of the first coated surface 145 for green light is greater than 95%, and the transmittance of the second coated surface 146 for green light is greater than 95%, so that the green p-polarized light can pass through the first coated surface 145 and the second coated surface 146, directly enter the eyepiece unit 15, and be transmitted to the human eye. Therefore, the emergent light of the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 is combined into one beam. Because the reflectivity and the transmissivity of the first film coating surface 145 and the second film coating surface 146 to different light rays are both larger than 95%, the loss of combining the emergent light of the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 into one beam through the light combining prism 14 is very small, and the brightness of the combined colored light is ensured.
With continued reference to fig. 3, optionally, the light-combining prism 14 is a regular quadrangular prism; the regular quadrangular prism includes four triangular prisms.
In an exemplary embodiment, the light combining prism 14 includes four triangular prisms, the first film coating surface 145 and the second film coating surface 146 are disposed at corresponding positions of the four triangular prisms, and then the four triangular prisms are bonded to form a regular quadrangular prism, thereby simplifying a manufacturing process of the light combining prism 14.
Optionally, the triangular prism is a right triangular prism.
Optionally, an included angle between the first film coating surface 145 and the second polarizer 17 is 45 °, and an included angle between the first film coating surface 145 and the third polarizer 18 is 45 °; the included angle between the second film coating surface 146 and the second polaroid 17 is 45 degrees, and the included angle between the second film coating surface 146 and the first polaroid 16 is 45 degrees, so that the consistency of the directions of emergent light emitted by the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 through the light-combining prism 14 is ensured.
Alternatively, the eyepiece unit 15 includes: a main body prism 151 and a reflection lens 152; the reflecting lens 152 is positioned at one end of the main prism 151 far away from the light combination prism 14; the reflection lens 152 includes a reflection surface 1521, and the reflection surface 1521 is located at an end of the reflection lens 152 away from the main prism 151 and is used for reflecting the outgoing light from the main prism 151. The main prism 151 includes a half-mirror 1511, and the half-mirror 1511 is used for reflecting the light reflected by the reflection surface 1521 to human eyes and transmitting the real scene light to the human eyes.
Monochromatic light emitted by the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 is combined into a beam by the light combining prism 14 and then converted into a colored light beam, so that the color display of the near-to-eye display device is realized. The color light beam enters the main body prism 151 in the eyepiece unit 15, then passes through the half-transmitting and half-reflecting surface 1511 of the main body prism 151, reaches the reflecting lens 152, is reflected by the reflecting surface 1521 of the reflecting lens 152, is partially reflected by the half-transmitting and half-reflecting surface 1511, exits into the air, enters the human eye, and realizes near-to-eye display. Real-scene light of an external environment can be transmitted into human eyes through the semi-transmitting and semi-reflecting surface 1511 of the main prism 151, so that the human eyes can simultaneously see real-scene images and images displayed by the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13, and AR near-to-eye display is achieved. The reflective lens 152 also has a magnifying function, so that the image projected by the display to the human eye is large enough for the user to view.
Optionally, the main prism 151 includes a trapezoidal prism and a triangular prism, the half-transmissive and half-reflective surface 1511 is disposed at a corresponding position of the trapezoidal prism and the triangular prism, and then the trapezoidal prism and the triangular prism are attached together, thereby simplifying a manufacturing process of the main prism 151.
Optionally, an included angle between the half-transmitting and half-reflecting surface 1511 and the optical axis of the main prism 151 is 45 °, so as to ensure that the color light beam emitted from the light-combining prism 14 is consistent with the direction of the real scene light projected to human eyes.
Optionally, the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 have the same size, so that the size of the monochromatic images displayed by the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 is ensured to be the same, and the light combining prism 14 is convenient to synthesize the monochromatic images displayed by the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 into the color image.
Optionally, the sizes of the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 are S, where S is less than or equal to 1 inch.
Where dimension S is the diagonal length of the display.
Illustratively, the red Micro-LED microdisplay 11, the green Micro-LED microdisplay 12, and the blue Micro-LED microdisplay 13 are each 16:9 0.7 inch Micro-LED microdisplays. Wherein, 16:9 is the proportion of the long side and the short side of the Micro-LED Micro-display. Continuing to refer to fig. 3, the edges of the red Micro-LED Micro-display 11, the green Micro-LED Micro-display 12 and the blue Micro-LED Micro-display 13 are shown as the short edges of the Micro-LED Micro-displays, so that the near-to-eye display device is compact in structure, light and portable.
The embodiment of the utility model provides a near-to-eye display device utilizes monochromatic red Micro-LED Micro display 11, green Micro-LED Micro display 12 and blue Micro-LED Micro display 13 as the image source, through closing optical prism 14 with red Micro-LED Micro display 11, the emergent light of green Micro-LED Micro display 12 and blue Micro-LED Micro display 13 closes for a branch of, and through eyepiece unit 15 with emergent light and the real scene light transmission to people's eye that close optical prism 14, the problem that near-to-eye display device luminance and colorization can't be compromise among the prior art has been solved, the high brightness color display of near-to-eye display device has been realized.
Because adopt monochromatic Micro-LED Micro display, the embodiment of the utility model provides a near-to-eye display device shows that the color is gorgeous, the saturation is high, and luminance is high, the energy consumption is low, standby time is long, can use in outdoor highlight environment.
The emergent light that closes light prism 14 with red Micro-LED Micro display 11, green Micro-LED Micro display 12 and blue Micro-LED Micro display 13 closes into a branch of, through the method of optics, makes the utility model discloses the near-to-eye display device that the embodiment provided compact structure, with low costs, the technological requirement is low, easily realizes.
The embodiment of the utility model provides a near-to-eye Display device has satisfied the little requirement of monochromatic pixel point size of AR, can be used to near-to-eye demonstration, be used as the hi-lite AR Display device who is fit for outdoor demonstration, the problem of adopting silica-based Liquid Crystal (Light Crystal on Silicon, LCoS) Display among the prior art, Organic Light emitting diode (Organic Light emitting diode Display, OLED) Display, the demonstration luminance that Liquid Crystal (Liquid Crystal Display, LCD) Display caused is low is solved, Display device's hi-lite color Display has been realized.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A near-eye display device, comprising:
the LED Micro-display comprises a red Micro-LED Micro-display, a green Micro-LED Micro-display, a blue Micro-LED Micro-display, a light-combining prism and an eyepiece unit;
the red Micro-LED Micro-display is positioned on one side of a first light incoming surface of the light combining prism, the green Micro-LED Micro-display is positioned on one side of a second light incoming surface of the light combining prism, and the blue Micro-LED Micro-display is positioned on one side of a third light incoming surface of the light combining prism;
the first light incident surface and the third light incident surface of the light combination prism are arranged oppositely, and the second light incident surface of the light combination prism is arranged oppositely to the light emergent surface of the light combination prism;
the light combining prism is used for combining the emergent light of the red Micro-LED Micro-display, the green Micro-LED Micro-display and the blue Micro-LED Micro-display into one beam;
the eyepiece unit is positioned on the light-emitting surface of the light-combining prism and used for transmitting emergent light passing through the light-combining prism and live-action light to human eyes.
2. The near-eye display device of claim 1, further comprising:
a first polarizing plate, a second polarizing plate, and a third polarizing plate;
the first polaroid is positioned between the red Micro-LED Micro-display and the first light incident surface of the light combining prism, the second polaroid is positioned between the green Micro-LED Micro-display and the second light incident surface of the light combining prism, and the third polaroid is positioned between the blue Micro-LED Micro-display and the third light incident surface of the light combining prism;
the light-combining prism includes:
a first coated surface and a second coated surface;
the first film coating surface is used for reflecting emergent light passing through the third polaroid;
the second film coating surface is used for reflecting emergent light passing through the first polaroid;
the first film coating surface and the second film coating surface both transmit emergent light passing through the second polaroid.
3. The near-eye display device according to claim 2, wherein the polarization direction of the light exiting through the first polarizing plate is the same as the polarization direction of the light exiting through the third polarizing plate, and the polarization direction of the light exiting through the second polarizing plate is orthogonal to the polarization direction of the light exiting through the first polarizing plate.
4. The near-eye display device according to claim 2, wherein light exiting through the first polarizing plate and the third polarizing plate is s-polarized light, and light exiting through the second polarizing plate is p-polarized light;
or emergent light passing through the first polaroid and the third polaroid is p-polarized light, and emergent light passing through the second polaroid is s-polarized light.
5. The near-to-eye display device of claim 2 wherein the first coated surface is a long wavelength pass bi-color filter and the second coated surface is a short wavelength pass bi-color filter.
6. The near-eye display device of claim 2 wherein the reflectance of the first coating to blue s-polarized light is greater than 95%, the transmittance of the first coating to blue p-polarized light is greater than 95%, and the transmittance of the first coating to red and green light is greater than 95%;
the reflectance of the second plating film to red s-polarized light is greater than 95%, the transmittance of the second plating film to red p-polarized light is greater than 95%, and the transmittance of the second plating film to blue light and green light is greater than 95%;
or the reflectivity of the first coating film facing blue p-polarized light is more than 95%, the transmissivity of the first coating film facing blue s-polarized light is more than 95%, and the transmissivity of the first coating film facing red light and green light is more than 95%;
the reflectance of the second plating film to red p-polarized light is greater than 95%, the transmittance of the second plating film to red s-polarized light is greater than 95%, and the transmittance of the second plating film to blue light and green light is greater than 95%.
7. The near-eye display device of claim 2,
the included angle between the first coating surface and the second polaroid is 45 degrees, and the included angle between the first coating surface and the third polaroid is 45 degrees;
the included angle between the second film-coated surface and the second polaroid is 45 degrees, and the included angle between the second film-coated surface and the first polaroid is 45 degrees.
8. The near-to-eye display device of claim 1 wherein the x-cube is a regular quadrangular prism;
the regular quadrangular prism includes four triangular prisms.
9. The near-eye display device according to claim 1, wherein the eyepiece unit comprises:
a main prism and a reflection lens;
the reflecting lens is positioned at one end of the main prism far away from the light-combining prism;
the reflection lens comprises a reflection surface, and the reflection surface is positioned at one end of the reflection lens, which is far away from the main prism, and is used for reflecting emergent light of the main prism;
the main body prism comprises a semi-transparent semi-reflecting surface, and the semi-transparent semi-reflecting surface is used for reflecting light rays reflected by the reflecting surface to human eyes and transmitting real scene light to the human eyes.
10. The near-to-eye display device of claim 9 wherein the angle between the transflective surface and the optical axis of the bulk prism is 45 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920782436.9U CN210109463U (en) | 2019-05-28 | 2019-05-28 | Near-to-eye display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920782436.9U CN210109463U (en) | 2019-05-28 | 2019-05-28 | Near-to-eye display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031978A (en) * | 2019-05-28 | 2019-07-19 | 深圳市思坦科技有限公司 | A kind of nearly eye display device |
| WO2023061299A1 (en) * | 2021-10-14 | 2023-04-20 | 雷鸟创新技术(深圳)有限公司 | Ar glasses |
-
2019
- 2019-05-28 CN CN201920782436.9U patent/CN210109463U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031978A (en) * | 2019-05-28 | 2019-07-19 | 深圳市思坦科技有限公司 | A kind of nearly eye display device |
| WO2023061299A1 (en) * | 2021-10-14 | 2023-04-20 | 雷鸟创新技术(深圳)有限公司 | Ar glasses |
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