CN111123526A - Image processing device and near-to-eye imaging apparatus - Google Patents
Image processing device and near-to-eye imaging apparatus Download PDFInfo
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- CN111123526A CN111123526A CN202010073055.0A CN202010073055A CN111123526A CN 111123526 A CN111123526 A CN 111123526A CN 202010073055 A CN202010073055 A CN 202010073055A CN 111123526 A CN111123526 A CN 111123526A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0112—Head-up displays characterised by optical features comprising device for genereting colour display
- G02B2027/0114—Head-up displays characterised by optical features comprising device for genereting colour display comprising dichroic elements
Abstract
The invention provides an image processing device and near-eye imaging equipment, and relates to the technical field of near-eye imaging, wherein the image processing device comprises: the image amplification assembly, the reflection assembly, the semi-reflection and semi-transmission assembly and the partial reflection assembly are arranged on the front side of the image amplification assembly; the image amplifying assembly is used for amplifying an image and transmitting the amplified image to the reflecting assembly; the reflection assembly is used for reflecting the image to the semi-reflection and semi-transmission assembly; the image which is emitted into the semi-reflective and semi-transparent component through the reflection component is reflected to the partial reflection component through the semi-reflective and semi-transparent component, and the image which is processed by the partial reflection component is transmitted through the semi-reflective and semi-transparent component. The invention provides an image processing device which can enlarge an image in a small size space and further increase the field angle and the eye movement range.
Description
Technical Field
The invention relates to the technical field of near-eye imaging, in particular to an image processing device and near-eye imaging equipment.
Background
A near-eye display optical system is a type of optical device that projects and magnifies an image from a microdisplay and transmits the magnified image to the human eye, and allows the human eye to see the real world at the same time. The user can see the fused image of the virtual image and the real image through the near-eye display optical system, the size of the field angle determines the range of the visual field, the larger the field angle is, the larger the visual field is, and the larger the eye movement range (EYEBOX) is. The near-eye imaging device is formed by the optical machine and the waveguide sheet, although the eye movement range can be enlarged, the field angle is small, the light effect is low, and the color quality is poor. By adopting the mode of combining the folding lens with the OLED or LCOS screen, the field angle is limited by the size of the chip, so that the field angle and the eye movement range are smaller.
Disclosure of Invention
The invention aims to provide an image processing device and a near-eye imaging device, which can enlarge an image in a smaller size space and further increase the field angle and the eye movement range.
In a first aspect, the present invention provides an image processing apparatus comprising: the image amplification assembly, the reflection assembly, the semi-reflection and semi-transmission assembly and the partial reflection assembly are arranged on the front side of the image amplification assembly;
the image amplifying assembly is used for amplifying an image and transmitting the amplified image into the reflecting assembly;
the reflection component is used for reflecting the image to the semi-reflecting and semi-transmitting component;
the image which is emitted into the semi-reflective and semi-transparent component through the reflection component is reflected to the partial reflection component through the semi-reflective and semi-transparent component, and the image processed by the partial reflection component is transmitted through the semi-reflective and semi-transparent component.
With reference to the first aspect, the present disclosure provides a first possible implementation manner of the first aspect, wherein the image magnifying assembly includes a lens group.
With reference to the first possible implementation manner of the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the lens group includes: first plastic lens, second plastic lens and cemented lens, first plastic lens second plastic lens with cemented lens is with the optical axis, just cemented lens sets up first plastic lens with between the second plastic lens.
With reference to the second possible implementation manner of the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein the cemented lens includes: the lens comprises a first glass lens and a second glass lens, wherein the first glass lens is connected with the second glass lens in a gluing mode.
In combination with the second possible implementation manner of the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the lens group further comprises a third glass lens;
and the third glass lens is arranged between one of the first plastic lens and the second plastic lens and the cemented lens.
With reference to the first possible implementation manner of the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein an optical axis of the lens group is parallel to a first direction, and an included angle between the first direction and the reflection assembly is smaller than 90 degrees;
the optical axis of the partial reflection assembly is parallel to a second direction, and an included angle between the second direction and the semi-reflecting and semi-transmitting assembly is smaller than 90 degrees;
the first direction and the second direction have an included angle.
With reference to the fifth possible implementation manner of the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein an included angle between the first direction and the reflection assembly is 40 degrees to 50 degrees;
the included angle between the second direction and the semi-reflecting and semi-transmitting component is 35-60 degrees.
With reference to the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein the partially reflecting assembly includes: the concave mirror and the half-reflecting and half-transmitting film are arranged on one side, facing the half-reflecting and half-transmitting assembly, of the concave mirror.
In a second aspect, the present invention provides a near-eye imaging device comprising: a first optical imaging device and a second optical imaging device, each of the first optical imaging device and the second optical imaging device including: the image processing device comprises an image source and the image processing device provided by the first aspect, wherein an image emitted by the image source is transmitted into the image amplifying assembly.
In combination with the second aspect, the present disclosure provides a first possible implementation manner of the second aspect, wherein the first optical imaging device and the second optical imaging device are symmetrical with respect to a central plane.
The embodiment of the invention has the following beneficial effects: adopt the image amplification subassembly to enlarge the image, and the image after will enlarging jets into the reflection subassembly, reflect the image to the semi-reflection and semi-transparent subassembly through the reflection subassembly, the image that jets into the semi-reflection and semi-transparent subassembly through the reflection subassembly is reflected to partial reflection subassembly through the semi-reflection and semi-transparent subassembly, the image transmission semi-reflection and semi-transparent subassembly after partial reflection subassembly is handled, can enlarge the processing to the image through partial reflection subassembly, and make the image after enlargeing permeate half-reflection and semi-transparent subassembly and get into the human eye and form the virtual image, can obtain great angle of field in less size space, and can increase the eye movement scope.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a position relationship between an image processing apparatus, an image source and a human eye according to an embodiment of the present invention;
fig. 2 is a schematic view of an image source and a first image magnifying assembly provided by an embodiment of the present invention;
fig. 3 is a schematic view of an image source and a second image magnification assembly provided by an embodiment of the present invention;
fig. 4 is a front view of an image processing apparatus and an image source along a second direction provided by an embodiment of the present invention;
fig. 5 is a front view of an image processing apparatus and an image source provided by an embodiment of the present invention along a first direction;
fig. 6 is a schematic diagram of a near-eye imaging apparatus provided by an embodiment of the invention.
Icon: 1-an image magnification component; 11-a first plastic lens; 12-a second plastic lens; 13-a cemented lens; 131-a first glass lens; 132-a second glass lens; 14-a third glass lens; 2-a reflective component; 3-a semi-reflecting and semi-permeable component; 4-a partially reflective component; 41-concave mirror; 42-a semi-reflecting and semi-permeable membrane; 5-an image source; 6-human eyes; 7-the central plane; x-a first direction; y-a second direction; z-a third direction.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "physical quantity" in the formula, unless otherwise noted, is understood to mean a basic quantity of a basic unit of international system of units, or a derived quantity derived from a basic quantity by a mathematical operation such as multiplication, division, differentiation, or integration.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1, an image processing apparatus according to an embodiment of the present invention includes: the device comprises an image amplification component 1, a reflection component 2, a semi-reflection and semi-transmission component 3 and a partial reflection component 4; the image amplifying assembly 1 is used for amplifying an image and transmitting the amplified image to the reflecting assembly 2; the reflection component 2 is used for reflecting the image to the semi-reflecting and semi-transmitting component 3; the image which is transmitted into the transflective assembly 3 through the reflecting assembly 2 is reflected to the partial reflecting assembly 4 through the transflective assembly 3, and the image processed by the partial reflecting assembly 4 is transmitted through the transflective assembly 3.
Specifically, image amplification subassembly 1 can carry out the first time magnification to the image that image source 5 produced, image after reflection subassembly 2 reflection jets into semi-reflection and semi-transparent subassembly 3, the image entering part reflection subassembly 4 through semi-reflection and semi-transparent subassembly 3 reflection, part reflection subassembly 4 can carry out the second time amplification with the image, the image after enlargies reflects to semi-reflection and semi-transparent subassembly 3 through part reflection subassembly 4, image transmission semi-reflection and semi-transparent subassembly 3 gets into people's eye 6, thereby form the virtual image, and then through the mode of light path folding, realize enlargiing twice to the image in less size space, can obtain great angle of field and eye movement scope, compare in the mode that uses ray apparatus and waveguide piece formation of image, the light efficiency is higher, image quality is better. The image processing device is applied to near-eye imaging equipment such as a head-mounted display system, the field angle can reach more than 60 degrees, and the eye movement range can reach 12mm multiplied by 8 mm.
In the embodiment of the present invention, the image magnifying assembly 1 includes a lens group.
Specifically, the lens group can adopt a single-chip lens or a multi-chip lens combination. The lenses are coaxial, and images sequentially transmit the lenses to realize image amplification. The material of lens can be for plastic material also can be for glass material, and the glass lens also can be the veneer lens, and the mode that this embodiment adopted plastic lens and glass lens to mix, and the whole focus of lens group is 7mm ~ 15 mm.
As shown in fig. 1 and 2, the lens group includes: the lens comprises a first plastic lens 11, a second plastic lens 12 and a cemented lens 13, wherein the first plastic lens 11, the second plastic lens 12 and the cemented lens 13 are coaxial, and the cemented lens 13 is arranged between the first plastic lens 11 and the second plastic lens 12. The first plastic lens 11 and the second plastic lens 12 may both be aspheric lenses.
Specifically, an image generated by the image source 5 sequentially passes through the first plastic lens 11, the cemented lens 13 and the second plastic lens 12, and both the first plastic lens 11 and the second plastic lens 12 can amplify the image. The cemented lens 13 can not only magnify the image but also eliminate or reduce chromatic aberration.
Further, the cemented lens 13 includes: a first glass lens 131 and a second glass lens 132, the first glass lens 131 and the second glass lens 132 being connected by gluing. The first glass lens 131 and the second glass lens 132 are spherical lenses.
As shown in fig. 1 and 3, the lens group further includes a third glass lens 14; a third glass lens 14 is disposed between one of the first plastic lens 11 and the second plastic lens 12 and the cemented lens 13. Wherein, the third glass lens 14 adopts a spherical lens. Under the condition of additionally arranging the third glass lens 14, the second plastic lens 12 adopts an aspheric lens; the first glass lens 131 and the second glass lens 132 are both spherical lenses, and the first plastic lens 11 is an aspheric lens.
It should be noted that, when the image source 5 adopts a 0.5 ″ OLED, the image processing device is used to perform near-eye imaging display, the resolution is 1600 × 1200, the viewing angle can reach 60 °, the focal length is 11mm, the viewing distance is 18mm, the eye movement range is 12mm × 18mm, and the distortion is less than 2%.
As shown in fig. 1, 4 and 5, the reflection assembly 2 may employ a mirror, which functions to reflect the image enlarged by the image enlarging assembly 1. A metal or dielectric highly reflective film may be plated on the reflector to make the reflectivity of the reflective assembly 2 greater than 90%. The included angle between the reflecting component 2 and the optical axis of the image amplifying component 1 is 40-50 degrees, for example: the angle between the reflecting assembly 2 and the optical axis of the image amplifying assembly 1 can be set to be 42 degrees, 45 degrees or 48 degrees.
Further, the optical axis of the lens group is parallel to the first direction x, and the included angle between the first direction x and the reflection assembly 2 is smaller than 90 degrees; the optical axis of the partial reflection assembly 4 is parallel to the second direction y, and the included angle between the second direction y and the transflective assembly 3 is less than 90 degrees; the first direction x and the second direction y have an angle. The first direction x, the second direction y and the third direction z are perpendicular to each other, an image amplified by the image amplifying assembly 1 is shot into the reflecting assembly 2 along the first direction x, an image reflected by the reflecting assembly 2 is shot into the semi-reflective and semi-transparent assembly 3, an image reflected by the semi-reflective and semi-transparent assembly 3 is shot into the partial reflecting assembly 4, the image is amplified by the partial reflecting assembly 4, and the image is shot into human eyes 6 along the second direction y.
Specifically, the semi-reflective and semi-transparent component 3 can adopt a semi-transparent plate reflecting lens, the semi-transparent plate reflecting lens is plated with a semi-reflective and semi-transparent material, the ratio of the reflectivity to the transmissivity can be selected to be 2:8, 3:7, 4:6 or 5:5, the overall light efficiency can be improved by increasing the reflectivity ratio, the brightness can be increased, and meanwhile the external illumination intensity can be reduced.
Furthermore, the included angle between the first direction x and the reflection assembly 2 is 40-50 degrees; the included angle between the second direction y and the semi-reflecting and semi-permeable component 3 is 35-60 degrees. The included angle between the first direction x and the reflective assembly 2 can be configured to be 42 degrees, 45 degrees, 47.5 degrees or 48 degrees, and the included angle between the second direction y and the transflective assembly 3 can be configured to be 40 degrees, 45 degrees, 50 degrees or 55 degrees.
Further, the partially reflecting member 4 includes: concave mirror 41 and semi-reflecting and semi-transmitting film 42, and semi-reflecting and semi-transmitting film 42 is arranged on the side of concave mirror 41 facing semi-reflecting and semi-transmitting component 3.
In particular, the partially reflective element 4 has a reflectivity to transmissivity ratio of 2:8, 3:7, 4:6 or 5:5, and the partially reflective element 4 has an optical power, preferably a focal length of typically 15mm to 30 mm. If the surface of the partial reflection component 4 is spherical, the material can be selected from glass, and if the surface is aspheric, the material can be selected from plastic. The concave mirror 41 is provided with an inner cavity, the semi-reflecting and semi-transmitting film 42 is coated on the inner surface of the inner cavity close to the semi-reflecting and semi-transmitting assembly 3, one part of the image shot into the partial reflection assembly 4 is reflected by the semi-reflecting and semi-transmitting film 42, and the other part of the image is reflected by the inner surface of the concave mirror 41 far away from the semi-reflecting and semi-transmitting assembly 3.
Example two
As shown in fig. 6, a near-eye imaging apparatus provided by an embodiment of the present invention includes: first optical imaging device and second optical imaging device, first optical imaging device and second optical imaging device each include: the image source 5 and the image processing device provided in the first embodiment, the image emitted from the image source 5 is incident into the image magnifying assembly 1.
Specifically, the near-eye imaging device may be configured as a head-mounted display system, and the near-eye imaging device has the same technical effect as the image processing apparatus, and therefore, the detailed description thereof is omitted. Note that the image source 5 includes: organic Light Emitting Diodes (OLEDs), Liquid Crystal On Silicon (LCOS), micro-light emitting diodes (micro-LEDs), or digital micro-mirrors (DMDs). If the image source 5 adopts a liquid crystal on silicon or a digital micromirror, an illumination device is additionally arranged to project an image on the liquid crystal on silicon or the digital micromirror to the image processing device.
In the present embodiment, the first optical imaging device and the second optical imaging device are symmetrical with respect to the center plane 7. The central plane 7 is perpendicular to the optical axis of the image magnification assembly 1, and the first optical imaging device and the second optical imaging device project images to two eyes in a one-to-one correspondence manner, so that the two eyes can acquire virtual images of the images.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An image processing apparatus characterized by comprising: the device comprises an image amplification component (1), a reflection component (2), a semi-reflection and semi-transmission component (3) and a partial reflection component (4);
the image amplifying assembly (1) is used for amplifying an image and emitting the amplified image into the reflecting assembly (2);
the reflection component (2) is used for reflecting the image to the semi-reflecting and semi-transmitting component (3);
the image which is emitted into the semi-reflective and semi-transparent component (3) through the reflection component (2) is reflected to the partial reflection component (4) through the semi-reflective and semi-transparent component (3), and the image processed by the partial reflection component (4) is transmitted through the semi-reflective and semi-transparent component (3).
2. An image processing apparatus according to claim 1, characterized in that the image magnification arrangement (1) comprises a lens group.
3. The image processing apparatus according to claim 2, wherein said lens group comprises: first plastic lens (11), second plastic lens (12) and cemented lens (13), first plastic lens (11) second plastic lens (12) with cemented lens (13) are with the optical axis, just cemented lens (13) set up first plastic lens (11) with between second plastic lens (12).
4. An image processing apparatus according to claim 3, wherein the cemented lens (13) comprises: the lens comprises a first glass lens (131) and a second glass lens (132), wherein the first glass lens (131) is connected with the second glass lens (132) in a gluing mode.
5. An image processing apparatus according to claim 3, characterized in that said lens group further comprises a third glass lens (14);
and the third glass lens (14) is arranged between one of the first plastic lens (11) and the second plastic lens (12) and the cemented lens (13).
6. An image processing apparatus according to claim 2, wherein the optical axis of said lens group is parallel to a first direction (x), and the angle between said first direction (x) and said reflective component (2) is smaller than 90 degrees;
the optical axis of the partial reflection assembly (4) is parallel to a second direction (y), and an included angle between the second direction (y) and the semi-reflecting and semi-transmitting assembly (3) is smaller than 90 degrees;
the first direction (x) has an angle with the second direction (y).
7. The image processing apparatus according to claim 6, wherein the first direction (x) is at an angle of 40-50 degrees to the reflective component (2);
the included angle between the second direction (y) and the semi-reflecting and semi-permeable component (3) is 35-60 degrees.
8. Image processing device according to claim 1, characterized in that the partially reflecting component (4) comprises: the light-emitting module comprises a concave mirror (41) and a semi-reflecting and semi-permeable film (42), wherein the semi-reflecting and semi-permeable film (42) is arranged on one side, facing the semi-reflecting and semi-permeable assembly (3), of the concave mirror (41).
9. A near-eye imaging device, comprising: a first optical imaging device and a second optical imaging device, each of the first optical imaging device and the second optical imaging device including: image source (5) and image processing device according to any of claims 1 to 8, the image emitted by the image source (5) being incident on the image magnification assembly (1).
10. A near-eye imaging apparatus according to claim 9, wherein the first optical imaging device and the second optical imaging device are symmetrical with respect to a central plane (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010073055.0A CN111123526A (en) | 2020-01-21 | 2020-01-21 | Image processing device and near-to-eye imaging apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010073055.0A CN111123526A (en) | 2020-01-21 | 2020-01-21 | Image processing device and near-to-eye imaging apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660808A (en) * | 2020-12-24 | 2022-06-24 | 宁波舜宇光电信息有限公司 | Near-to-eye display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660808A (en) * | 2020-12-24 | 2022-06-24 | 宁波舜宇光电信息有限公司 | Near-to-eye display device |
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