CN114624889A - Enhanced display type near-to-eye display projection optical device - Google Patents
Enhanced display type near-to-eye display projection optical device Download PDFInfo
- Publication number
- CN114624889A CN114624889A CN202210260161.9A CN202210260161A CN114624889A CN 114624889 A CN114624889 A CN 114624889A CN 202210260161 A CN202210260161 A CN 202210260161A CN 114624889 A CN114624889 A CN 114624889A
- Authority
- CN
- China
- Prior art keywords
- lens
- polarization beam
- beam splitter
- light source
- splitter prism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/004—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having four lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
-
- 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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
- G02B27/285—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining comprising arrays of elements, e.g. microprisms
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses an enhanced display type near-to-eye display projection optical device which comprises a display image source, a cemented lens, a polarization beam splitter prism, a concave reflector, an illuminating mechanism and an imaging lens, wherein the display image source, the cemented lens, the polarization beam splitter prism and the concave reflector are sequentially arranged, the concave surface of the concave reflector faces the display image source, a quarter-wave plate is arranged on the side wall, close to the concave reflector, of the polarization beam splitter prism and used for realizing polarization state conversion, and the illuminating mechanism and the imaging lens are oppositely arranged on two sides of the polarization beam splitter prism. Adopt illumination mechanism to realize throwing light on to showing the image source, wherein through dull and stereotyped speculum, turn light, can effectually make the system fold, compress the volume, cemented lens and polarization beam splitting prism share respectively in illumination light and formation of image picture, fold the light, further reach the effect that reduces the volume and reduce weight to improve the imaging quality, and improved the comfort level and the experience of wearing and felt.
Description
Technical Field
The invention belongs to the field of near-eye display, and particularly relates to an enhanced display type near-eye display projection optical device.
Background
In recent years, with the continuous development of social productivity and scientific technology, relative requirements of various industries on near-eye display technology are increasingly vigorous; the near-eye display technology has made great progress and gradually becomes a new scientific and technical field. Because the near-eye display device is a head-mounted device, it must be compact, small, lightweight, and comfortable to wear. In the near-to-eye display device of augmented reality based on optical waveguide who uses at present, in order to make the clear coupling that the index requirement of showing the image source projection can follow the optical waveguide enter into the optical waveguide, need use the ray apparatus module to realize this function.
The ray apparatus module is the work piece of core among the near-to-eye display device, and optical module has display element and lens unit to constitute usually, and the projection optical device that is used for near-to-eye to show of present tradition is that illumination light path separates with the formation of image light path to cause optical module bulky, weight is big, and the not good effect of formation of image quality, the travelling comfort and the experience that seriously influence was worn are felt.
Disclosure of Invention
The invention aims to provide a display-enhanced near-eye display projection optical device aiming at the problems that an optical module in the prior art is large in size and weight, the effect of poor imaging quality seriously influences wearing comfort and experience feeling.
In order to realize the purpose, the technical scheme adopted by the invention is as follows:
the invention provides an enhanced display type near-to-eye display projection optical device which comprises a display image source, a cemented lens, a polarization beam splitter prism, a concave reflector, an illuminating mechanism and an imaging lens, wherein the display image source, the cemented lens, the polarization beam splitter prism and the concave reflector are sequentially arranged, the concave surface of the concave reflector faces the display image source, a quarter-wave plate is arranged on the side wall, close to the concave reflector, of the polarization beam splitter prism and used for realizing polarization state conversion, the illuminating mechanism and the imaging lens are oppositely arranged on two sides of the polarization beam splitter prism, and the optical axes of the imaging lens and the cemented lens are perpendicular to each other.
The illumination mechanism comprises a first LED light source, a second LED light source, a dichroic mirror and a flat reflector, wherein the first LED light source and the second LED light source are respectively positioned at two sides of the dichroic mirror, light rays emitted by the first LED light source and the second LED light source form first light rays under the light mixing effect of the dichroic mirror, the flat reflector is obliquely arranged relative to the polarization splitting prism and used for reflecting the first light rays to enter the polarization splitting prism, the first light rays are reflected by the polarization splitting prism to enter the gluing lens and then reach the display image source for brightening, second light rays emitted by the display image source penetrate through the polarization splitting prism to reach the concave reflector, the second light rays are reflected by the concave reflector to enter the polarization splitting prism and then are reflected by the polarization splitting prism to enter the imaging lens and then are projected to the outside.
Preferably, the lighting mechanism further comprises a first collimating lens, a second collimating lens, a fly eye lens and a relay lens, the first collimating lens is located on the light emitting side of the first LED light source, the second collimating lens is located on the light emitting side of the second LED light source, the fly eye lens and the relay lens are both perpendicular to the optical axis of the cemented lens and located between the dichroic mirror and the flat plate reflector, and the first light rays sequentially pass through the fly eye lens and the relay lens and then reach the flat plate reflector.
Preferably, the first LED light source is a green light source and the second LED light source comprises a packaged red light source and a packaged blue light source.
Preferably, the imaging lens is a concave lens.
Preferably, the cemented lens includes a first lens and a second lens, the first lens is a convex lens, the second lens is a concave lens, the convex lens is close to the display image source, and the concave lens is far from the display image source.
Preferably, each collimating lens comprises a third lens and a fourth lens which are sequentially arranged along the light transmission direction, the third lens is a glass spherical lens, the fourth lens is a plastic aspheric lens, and the following aspheric formula is satisfied:
wherein z is the rise of the vector, Y is the central height of the lens, k is the conic coefficient, C is the curvature radius, aiThe i-th aspheric coefficient.
Preferably, the enhanced display type near-eye display projection optics satisfies a volume V < 3.5 cc.
Compared with the prior art, the invention has the beneficial effects that: adopt lighting mechanism to realize throwing light on to showing the image source, wherein through dull and stereotyped speculum, turn light, can effectually fold, the compression volume, cemented lens and polarization beam splitter prism share respectively in illumination light path and formation of image light path, fold the light, further reach the effect that reduces the volume and reduce weight to improve the imaging quality, and then improved and worn the comfort level and experienced and feel.
Drawings
FIG. 1 is a schematic view of a first viewing angle structure of an enhanced display near-eye display projection optical device according to the present invention;
FIG. 2 is a schematic diagram illustrating a second viewing angle structure of the enhanced display near-eye display projection optical device according to the present invention;
FIG. 3 is a schematic view of the structure of the illumination mechanism of the present invention;
FIG. 4 is a partial optical path diagram of an enhanced display near-to-eye display projection optical device according to the present invention;
FIG. 5 is a graph of MTF of the present invention;
FIG. 6 is a speckle pattern of the present invention.
Description of reference numerals: 1. displaying the image source; 2. a cemented lens; 3. an illumination mechanism; 31. a first LED light source; 32. a second LED light source; 33. a first collimating lens; 34. a second collimating lens; 35. a dichroic mirror; 36. a fly-eye lens; 37. a relay lens; 38. a flat plate mirror; 4. a polarization splitting prism; 5. a concave reflector; 6. an imaging lens; 7. a quarter-wave plate.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
As shown in fig. 1-4, an enhanced display type near-to-eye display projection optical device is provided, which includes a display image source 1, a cemented lens 2, a polarization splitting prism 4, a concave reflector 5, an illumination mechanism 3, and an imaging lens 6, wherein the display image source 1, the cemented lens 2, the polarization splitting prism 4, and the concave reflector 5 are sequentially disposed, a concave surface of the concave reflector 5 faces the display image source 1, a quarter-wave plate 7 is disposed on a side wall of the polarization splitting prism 4 close to the concave reflector 5, the quarter-wave plate 7 is used for realizing polarization state conversion, the illumination mechanism 3 and the imaging lens 6 are disposed on two sides of the polarization splitting prism 4, and optical axes of the imaging lens 6 and the cemented lens 2 are perpendicular to each other.
The illumination mechanism 3 comprises a first LED light source 31, a second LED light source 32, a dichroic mirror 35 and a flat reflector 38, the first LED light source 31 and the second LED light source 32 are respectively located at two sides of the dichroic mirror 35, and light emitted by the first LED light source 31 and the second LED light source 32 forms first light under the light mixing effect of the dichroic mirror 35, the flat reflector 38 is arranged in an inclined manner relative to the polarization splitting prism 4 and used for reflecting the first light to enter the polarization splitting prism 4, and then the first light is reflected by the polarization splitting prism 4 to enter the cemented lens 2 and then reach the display image source 1 for brightening, second light emitted by the display image source 1 penetrates through the polarization splitting prism 4 to reach the concave reflector 5, the concave reflector 5 reflects the second light to enter the polarization splitting prism 4, and then the second light is reflected by the polarization splitting prism 4 to enter the imaging lens 6 and then is projected to the outside.
Specifically, in the imaging optical path, the second light emitted by the image source 1 is first linearly polarized light, the transmission direction of the first linearly polarized light is consistent with the first polarization direction of the polarization beam splitter prism, the first linearly polarized light transmits through the PBS film of the polarization beam splitter prism 4, passes through the polarization beam splitter prism 4, and is converted in polarization state through the quarter-wave plate 7 to form circularly polarized light, the circularly polarized light reaches the concave reflector 5, the concave reflector 5 reflects the circularly polarized light through the quarter-wave plate 7 again to convert the circularly polarized light into the second linearly polarized light, the second polarized light is perpendicular to the second polarization direction, the second polarized light enters the polarization beam splitter prism 4, is totally reflected by the PBS film of the polarization beam splitter prism 4, enters the imaging lens 6, and is projected to the outside.
Taking fig. 1 as an example, the display image source 1 is located at an upper position, the concave reflector 5 is located at a lower position, the illumination mechanism 3 is located at a left position, the imaging lens 6 is located at a right position, the second LED light source 32 is located at a front position, and a side opposite to the second LED light source 32 is located at a rear position, the display image source 1, the cemented lens 2, the polarization beam splitter prism 4, and the concave reflector 5 are sequentially arranged from top to bottom, the imaging lens 6 is located at a right side of the polarization beam splitter prism 4, and the illumination mechanism 3 is located at a left side of the polarization beam splitter prism 4. The optical path transmitted by the first light is used as an illumination optical path, and the optical path transmitted by the second light is used as an imaging optical path; the display image source 1 can be one of micro led, OLED, LCD and LCOS, but is not limited to the above display image source; the display image source 1 has a reflective function, so that the light emitted by the illuminating mechanism 3 is reflected to make the display image source 1 emit light and brighten so as to provide illumination for the display image source 1; the polarization beam splitter prism 4 is an optical element for separating horizontal polarization and vertical polarization of light, and plays a role in converting a polarization state in a light path if a first polarization direction is vertical polarization and a second polarization direction is horizontal polarization, and the polarization beam splitter Prism (PBS) is generally formed by gluing oblique sides of two right-angle prisms or optical cement, and a polarization beam splitting film (PBS film) is plated on an inclined surface; the concave reflector 5 is used in an imaging light path and plays a role in reflecting and turning the light path and correcting aberration; the imaging lens 6 is used in an imaging light path and plays a role in aberration correction; for convenience of description, as shown in fig. 4, the four left, upper, right, and lower faces of the polarization splitting prism 4 are respectively denoted as S1, S2, S3, and S4, the quarter wave plate 7 is located on S4, and the dotted line arrow denotes an illumination optical path and the solid line arrow denotes an imaging optical path.
The device adopts lighting mechanism to realize throwing light on showing the image source, wherein through dull and stereotyped speculum, carries out the turn with light, can effectually fold, compresses the volume, and veneer lens and polarization beam splitting prism share respectively in illumination light path and formation of image light path, fold the light, further reach the effect that reduces the volume and reduce weight to improve the imaging quality, and then improved and worn the comfort level and experienced and feel.
In a specific embodiment, the illumination mechanism 3 further includes a first collimating lens 33, a second collimating lens 34, a fly eye lens 36, and a relay lens 37, the first collimating lens 33 is located on the light emitting side of the first LED light source 31, the second collimating lens 34 is located on the light emitting side of the second LED light source 32, the fly eye lens 36 and the relay lens 37 are both disposed perpendicular to the optical axis of the cemented lens 2 and are located between the dichroic mirror 35 and the flat plate reflecting mirror 38, and the first light reaches the flat plate reflecting mirror 38 after passing through the fly eye lens 36 and the relay lens 37 in sequence.
Specifically, as shown in fig. 1, an included angle between the front side of the dichroic mirror 35 and the horizontal plane is an acute angle, the second LED light source 32 and the second collimating lens 34 are vertically placed in front of the dichroic mirror 35 from front to back in sequence, the first LED light source 31 and the first collimating lens 33 are sequentially located above the dichroic mirror 35 from top to bottom, and angles of the first LED light source 31, the first collimating lens 33, the second LED light source 32 and the second collimating lens 34 can be adjusted according to actual correction requirements. Each collimating lens comprises a glass spherical lens and a plastic non-spherical lens, and each collimating lens has the function of collimating the LED light source; fly-eye lens 36 acts as a light uniformizing function; the relay lens 37 functions to modulate light.
In one embodiment, the first LED light source 31 is a green light source and the second LED light source 32 is a red light source and a blue light source.
Specifically, for convenience of representation, R is an abbreviation of red light source, G is an abbreviation of green light source, and B is an abbreviation of blue light source, and the dichroic mirror 35 plays a role in mixing three colors of R, G and B; the flat reflector 38 turns the light, so that the system can be effectively folded and the volume can be compressed; according to practical situations, the first LED light source 31 can be one or two of R, G and B, and when the first LED light source 31 is one of R, G and B, the second LED light source 32 is the other two of R, G and B; when the first LED light source 31 is R, G or B, the second LED light source 32 is R, G or B, and the light source types of the two channels can be divided into various cases.
In a particular embodiment, the imaging lens 6 is a concave lens.
In one embodiment, the cemented lens 2 includes a first lens and a second lens, the first lens is a convex lens, the second lens is a concave lens, the convex lens is close to the display image source 1, and the concave lens is far from the display image source 1.
Specifically, as shown in fig. 1, the cemented lens is formed by cementing a convex lens and a concave lens, and the convex lens is located above the concave lens.
In one embodiment, each collimating lens includes a third lens and a fourth lens sequentially arranged along the light transmission direction, the third lens is a glass spherical lens, the fourth lens is a plastic aspheric lens, and the following aspheric formula is satisfied:
wherein z is the rise of the vector, Y is the central height of the lens, k is the conic coefficient, C is the curvature radius, aiThe i-th aspheric coefficient.
In one particular embodiment, the augmented-display near-eye display projection optics satisfy a volume V < 3.5 cc.
The working principle of the enhanced display type near-to-eye display projection optical device is as follows:
the light rays emitted by each LED light source are collimated through the corresponding collimating lenses respectively;
the collimated light rays are respectively mixed through a dichroic mirror 35 to form first light rays;
the first light is homogenized through a fly-eye lens 36, so that the light is uniformly distributed;
then, the light is modulated by the relay lens 37;
the first light modulated by the relay lens 37 is vertically emitted to the flat reflector 38, and the flat reflector 38 reflects the light, so that the light is horizontally emitted to the polarization splitting prism 4;
then the light is totally reflected by a polarization beam splitter prism 4 and vertically upwards emitted into the cemented lens 2, and the cemented lens 2 modulates the light;
the cemented lens 2 emits light into the display image source 1, the picture on the display image source 1 is illuminated, and the second light emitted by the display image source 1 is a first linear polarized light;
the first linear polarized light is incident into the cemented lens 2, and the cemented lens 2 performs aberration correction to improve the imaging picture quality;
then the first linear polarized light is converted into a circular polarized light by penetrating through a PBS film of the polarization beam splitter prism 4, penetrating through the polarization beam splitter prism 4 and realizing polarization state conversion through a quarter-wave plate 7;
the circularly polarized light reaches the concave reflector 5, the concave reflector 5 reflects the circularly polarized light and passes through the quarter-wave plate 7 again, and the quarter-wave plate 7 converts the circularly polarized light into second linearly polarized light;
the second linear polarized light vertically and upwards enters the polarization beam splitter prism 4, then is totally reflected by a PBS (polarizing beam splitter) film of the polarization beam splitter prism 4, and horizontally enters the imaging lens 6, and finally a clear picture is projected.
Fig. 5 is a Modulation Transfer Function (MTF) graph, which shows that the MTF value of the device in each field is above 0.4, and the device has good resolution. FIG. 6 is a speckle pattern of the device, the speckle of each field of view is close to the Gaussian limit, and the imaging quality is good.
All possible combinations of the technical features of the embodiments described above may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express the more specific and detailed embodiments described in the present application, but not be construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. An enhanced display type near-to-eye display projection optical device, characterized in that: the enhanced display type near-to-eye display projection optical device comprises a display image source (1), a cemented lens (2), a polarization beam splitter prism (4), a concave reflector (5), an illuminating mechanism (3) and an imaging lens (6), the display image source (1), the cemented lens (2), the polarization beam splitter prism (4) and the concave reflector (5) are arranged in sequence, the concave surface of the concave reflector (5) faces the display image source (1), a quarter wave plate (7) is arranged on the side wall of the polarization beam splitter prism (4) close to the concave reflector (5), the quarter-wave plate (7) is used for realizing polarization state conversion, the illuminating mechanism (3) and the imaging lens (6) are oppositely arranged at two sides of the polarization beam splitter prism (4), and the optical axes of the imaging lens (6) and the cemented lens (2) are perpendicular to each other;
the illumination mechanism (3) comprises a first LED light source (31), a second LED light source (32), a dichroic mirror (35) and a flat reflector (38), the first LED light source (31) and the second LED light source (32) are respectively positioned at two sides of the dichroic mirror (35), light rays emitted by the first LED light source and the second LED light source form first light rays under the light mixing action of the dichroic mirror (35), the flat reflector (38) is obliquely arranged relative to the polarization beam splitter prism (4) and is used for reflecting the first light rays into the polarization beam splitter prism (4), then the first light rays are totally reflected by the polarization beam splitter prism (4) and enter the cemented lens (2) to reach the display image source (1) for brightening, second light rays emitted by the display image source (1) reach the concave reflector (5) through the polarization beam splitter prism (4), and the second light rays are reflected by the concave reflector (5) to enter the polarization beam splitter prism (4), and then the light is reflected by the polarization beam splitter prism (4), enters the imaging lens (6) and is projected to the outside.
2. The enhanced display near-eye display projection optics of claim 1, wherein: the lighting mechanism (3) further comprises a first collimating lens (33), a second collimating lens (34), a fly eye lens (36) and a relay lens (37), the first collimating lens (33) is located on the light emitting side of the first LED light source (31), the second collimating lens (34) is located on the light emitting side of the second LED light source (32), the fly eye lens (36) and the relay lens (37) are both perpendicular to the optical axis of the cemented lens (2) and located between the dichroic mirror (35) and the flat plate reflecting mirror (38), and the first light sequentially passes through the fly eye lens (36) and the relay lens (37) and then reaches the flat plate reflecting mirror (38).
3. The enhanced display near-eye display projection optics of claim 1, wherein: the first LED light source (31) is a green light source and the second LED light source (32) comprises a packaged red light source and a packaged blue light source.
4. The enhanced display near-eye display projection optics of claim 1, wherein: the imaging lens (6) is a concave lens.
5. The enhanced display near-eye display projection optics of claim 1, wherein: the cemented lens (2) comprises a first lens and a second lens, the first lens is a convex lens, the second lens is a concave lens, the convex lens is close to the display image source (1), and the concave lens is far away from the display image source (1).
6. The enhanced display near-eye display projection optics of claim 2, wherein: each collimating lens contains third lens and the fourth lens that sets gradually along light transmission direction, the third lens is glass spherical lens, the fourth lens is plastics aspherical lens, and satisfies following aspherical equation:
wherein z is the rise of the vector, Y is the central height of the lens, k is the conic coefficient, C is the curvature radius, aiThe i-th aspheric coefficient.
7. The enhanced display near-eye display projection optics of claim 1, wherein: the enhanced display type near-to-eye display projection optical device satisfies a volume V < 3.5 cc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210260161.9A CN114624889A (en) | 2022-03-16 | 2022-03-16 | Enhanced display type near-to-eye display projection optical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210260161.9A CN114624889A (en) | 2022-03-16 | 2022-03-16 | Enhanced display type near-to-eye display projection optical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114624889A true CN114624889A (en) | 2022-06-14 |
Family
ID=81902395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210260161.9A Pending CN114624889A (en) | 2022-03-16 | 2022-03-16 | Enhanced display type near-to-eye display projection optical device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114624889A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201780448U (en) * | 2009-09-21 | 2011-03-30 | 红蝶科技(深圳)有限公司 | Projection optics engine with even and clear image |
| CN205958856U (en) * | 2016-08-29 | 2017-02-15 | 湖北久之洋红外系统股份有限公司 | A miniature projection display optical system for HUD |
| CN210488129U (en) * | 2019-09-26 | 2020-05-08 | 浙江水晶光电科技股份有限公司 | Light regulation and control equipment and light engine |
| CN111323997A (en) * | 2020-04-26 | 2020-06-23 | 杭州光粒科技有限公司 | LCOS projection display system |
| CN113359294A (en) * | 2020-03-06 | 2021-09-07 | 苏州苏大维格科技集团股份有限公司 | Micro optical system |
| CN214252751U (en) * | 2021-02-01 | 2021-09-21 | 深圳珑璟光电科技有限公司 | Near-to-eye display system |
| CN214504020U (en) * | 2020-12-21 | 2021-10-26 | 歌尔光学科技有限公司 | Optical system and augmented reality device |
| CN214795441U (en) * | 2021-04-30 | 2021-11-19 | 舜宇光学（浙江）研究院有限公司 | Miniature projection light engine and wearable display device |
| CN215117019U (en) * | 2021-04-12 | 2021-12-10 | 北京耐德佳显示技术有限公司 | Optical lens group and near-to-eye display device |
| CN215769205U (en) * | 2021-05-26 | 2022-02-08 | 深圳珑璟光电科技有限公司 | Near-to-eye display system |
| CN215986756U (en) * | 2021-09-26 | 2022-03-08 | 深圳珑璟光电科技有限公司 | Display system and near-to-eye display equipment |
-
2022
- 2022-03-16 CN CN202210260161.9A patent/CN114624889A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201780448U (en) * | 2009-09-21 | 2011-03-30 | 红蝶科技(深圳)有限公司 | Projection optics engine with even and clear image |
| CN205958856U (en) * | 2016-08-29 | 2017-02-15 | 湖北久之洋红外系统股份有限公司 | A miniature projection display optical system for HUD |
| CN210488129U (en) * | 2019-09-26 | 2020-05-08 | 浙江水晶光电科技股份有限公司 | Light regulation and control equipment and light engine |
| CN113359294A (en) * | 2020-03-06 | 2021-09-07 | 苏州苏大维格科技集团股份有限公司 | Micro optical system |
| CN111323997A (en) * | 2020-04-26 | 2020-06-23 | 杭州光粒科技有限公司 | LCOS projection display system |
| CN214504020U (en) * | 2020-12-21 | 2021-10-26 | 歌尔光学科技有限公司 | Optical system and augmented reality device |
| CN214252751U (en) * | 2021-02-01 | 2021-09-21 | 深圳珑璟光电科技有限公司 | Near-to-eye display system |
| CN215117019U (en) * | 2021-04-12 | 2021-12-10 | 北京耐德佳显示技术有限公司 | Optical lens group and near-to-eye display device |
| CN214795441U (en) * | 2021-04-30 | 2021-11-19 | 舜宇光学（浙江）研究院有限公司 | Miniature projection light engine and wearable display device |
| CN215769205U (en) * | 2021-05-26 | 2022-02-08 | 深圳珑璟光电科技有限公司 | Near-to-eye display system |
| CN215986756U (en) * | 2021-09-26 | 2022-03-08 | 深圳珑璟光电科技有限公司 | Display system and near-to-eye display equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI506300B (en) | Condenser optical system and projection type image display device | |
| US7327521B2 (en) | Colored light synthesis element and projection device therewith | |
| US20230061564A1 (en) | Optical Waveguide System and Near-eye Display | |
| US11543648B2 (en) | Virtual image projection device | |
| CN214795441U (en) | Miniature projection light engine and wearable display device | |
| CN112444979A (en) | Near-eye display optical system and near-eye display apparatus | |
| WO2022028284A1 (en) | Relay color combining device, miniature projection light engine and method thereof, and electronic device | |
| CN114967160A (en) | Projection display assembly and augmented reality display device | |
| CN115996284B (en) | LCOS projection optical machine with high contrast and no thermal defocus | |
| CN116540484A (en) | Projection display module and wearable equipment | |
| CN116449566A (en) | Near-to-eye display module and head-mounted display device | |
| CN116520626A (en) | Optical projection system and electronic device | |
| CN114624889A (en) | Enhanced display type near-to-eye display projection optical device | |
| WO2023071032A1 (en) | Short-focus folding optical system and virtual reality display device | |
| CN115933188A (en) | Optical module and head-mounted display equipment | |
| CN113126299B (en) | Projection ray apparatus and head-mounted smart machine | |
| WO2019024090A1 (en) | Optical imaging system and head-mounted device | |
| CN113900263A (en) | Color combination device | |
| CN210465965U (en) | Two-piece type LCD projector based on PBS light splitting and combining | |
| CN113253558A (en) | Light source assembly, image forming apparatus, and electronic apparatus | |
| CN114265278A (en) | Projection optical device and AR display equipment | |
| CN218896250U (en) | Projection lens | |
| CN220455659U (en) | Projection system and projection equipment | |
| WO2024051777A1 (en) | Near-eye display optical machine and near-eye display apparatus | |
| CN217954844U (en) | Near-to-eye display device and wearable equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |