CN111323918A - Display and imaging sharing light path scheme - Google Patents
Display and imaging sharing light path scheme Download PDFInfo
- Publication number
- CN111323918A CN111323918A CN201811538626.2A CN201811538626A CN111323918A CN 111323918 A CN111323918 A CN 111323918A CN 201811538626 A CN201811538626 A CN 201811538626A CN 111323918 A CN111323918 A CN 111323918A
- Authority
- CN
- China
- Prior art keywords
- display
- focal length
- imaging
- optical path
- sensor
- 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
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0093—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
Abstract
The invention discloses a display and imaging shared light path scheme, which can be used for penetration type near-eye display, can display a picture in front of eyes, and can shoot a pupil picture for pupil identification.
Description
Technical Field
The invention relates to a light path scheme, in particular to a scheme for sharing a light path in display and imaging.
Background
The imaging module group that present near-to-eye display glasses's demonstration and eyeball tracked is separated, and is bulky, can not follow the shooting pupil with the most accurate position moreover.
Disclosure of Invention
The invention provides a display and imaging shared light path scheme which can track and shoot pupil pictures while displaying pictures in front of eyes.
The invention is realized by the following technical scheme:
a display and imaging shared light path scheme comprises a front input and output part, a collimation expansion part, a focusing machine, a spectroscope, a focal length compensation lens, an image source and a sensor.
The display and imaging light rays share the front input and output part, the collimation and expansion part and the focusing machine, and the front input and output part displays a picture in front of a pupil, receives the pupil light rays and transmits the pupil light rays to the shooting sensor.
The front input and output part adopts a transparent waveguide or a semi-transparent and semi-reflective beam splitter prism with reversible light path.
And a collimation and expansion part for collimating and expanding the light of the image source when displaying the picture. The photographing light is focused when photographing a picture.
The focusing machine is used for adjusting the shooting focal length when shooting the pupil picture and adjusting the focal length of the display picture when displaying the picture.
When the image source and the sensor are small in size, they are installed side by side without using a spectroscope.
The principle of the invention is as follows:
when a picture is displayed, light rays emitted by an image source sequentially pass through the spectroscope, the focusing machine and the collimation and expansion part, the light rays after collimation and expansion reach the front input and output part and are displayed in front of eyes, and at the moment, the focusing machine adjusts the focal length to be at the clearest position of a near-to-eye display picture.
When a pupil picture is shot, light rays of the pupil picture are transmitted in a reverse direction in a system light path because the light path is reversible, the light rays sequentially pass through the front input and output part, the collimation and expansion part and the focusing machine, then are reflected to the focal length compensation lens by the beam splitter, and finally reach the shooting sensor. At the moment, the focusing machine adjusts the focal length to the clearest position for shooting.
Because the focal lengths of the display optical path and the imaging optical path are different, a compensation lens can be arranged at the front end of one of the sensor and the image source for focal length compensation, and then the system adjusts the optimal focal length in two modes through the focusing machine.
The invention has the advantages that clear images can be displayed in front of eyes, and clear pupil images can be tracked and shot without shielding scenery in front of eyes.
Drawings
Fig. 1 and 2 are schematic diagrams of the present invention.
Detailed Description
The following describes exemplary embodiments of the present invention with reference to the accompanying drawings.
In fig. 1, 1 is a front input/output section, 2 is a collimation expanding section, 6 is a focusing machine, 7 is a beam splitter prism, 8 is a focal length compensation lens, 9 is a photographing sensor, and 10 is an image source.
Fig. 2 shows a front input/output section 1 in which a half-reflective waveguide sheet is used to realize display light output and photographing light input.
In the display screen, 5 in fig. 2 is the light entering the waveguide after being collimated and expanded, and 3 is the display output light direction.
In fig. 2, 4 is the direction in which the pupil light enters the waveguide sheet, and 6 is the direction in which the photographing light enters the system.
When a picture is displayed, as shown in fig. 1, light emitted by an image source 10 passes through a beam splitter prism 7, a focusing machine 6 and an expanded collimating section 2 to reach a waveguide sheet 1, and then in fig. 2, the light is transmitted to a light guide 3 through a light path 5 to output the display picture.
When taking a picture of the pupil, the light of the pupil enters the system on the waveguide via the optical paths 4 to 6 in fig. 2. Light rays entering the system pass through the collimation extension part 2 in fig. 1 and enter the focusing machine 6, and then the light rays are reflected downwards by the splitting prism and pass through the focal length compensation lens to reach the shooting sensor. In order to shoot the clearest picture, the image source can be selected to be closed when the pupil picture is shot.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (5)
1. A scheme for sharing optical path between display and imaging includes front input/output part, collimation expansion part, focusing machine, spectroscope, focal length compensation lens, image source and sensor.
2. The scheme as claimed in claim 1, wherein the front input/output portion is a waveguide or a beam splitter prism with reversible optical path, the forward optical path outputs light for displaying images, and the reverse optical path receives photographing light.
3. The optical path sharing scheme for displaying and imaging as claimed in claim 1, wherein the focusing mechanism can adjust the display focal length and the imaging focal length, and the focusing mechanism only ensures that one of the display focal length and the imaging focal length is best focused when the focal length compensation lens is not used.
4. The optical path sharing scheme for displaying and imaging as claimed in claim 1, wherein a beam splitter is used to separately display and capture light at the end when the image source and sensor are large in size, and the image source and sensor can be installed side by side when the image source and sensor are small in size without using a beam splitter.
5. The optical path sharing scheme for display and imaging as claimed in claim 1, wherein the focal length of the display and imaging optical paths are different, so that a compensation lens can be installed on one of the sensor and the image source for compensating the focal length, thereby optimizing the focal lengths of both optical paths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538626.2A CN111323918A (en) | 2018-12-17 | 2018-12-17 | Display and imaging sharing light path scheme |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538626.2A CN111323918A (en) | 2018-12-17 | 2018-12-17 | Display and imaging sharing light path scheme |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111323918A true CN111323918A (en) | 2020-06-23 |
Family
ID=71170567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811538626.2A Pending CN111323918A (en) | 2018-12-17 | 2018-12-17 | Display and imaging sharing light path scheme |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111323918A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109942A (en) * | 2021-03-02 | 2021-07-13 | 联想(北京)有限公司 | Display device and head-mounted display equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955255A (en) * | 2011-09-26 | 2013-03-06 | 微软公司 | Integrated eye tracking and display system |
| CN103852891A (en) * | 2012-12-03 | 2014-06-11 | 纬创资通股份有限公司 | Head-mounted display device |
| CN106199958A (en) * | 2015-05-07 | 2016-12-07 | 尚立光电股份有限公司 | Automatic focusing head-mounted display device |
| CN106716226A (en) * | 2014-09-16 | 2017-05-24 | 微软技术许可有限责任公司 | Compact projection light engine for diffractive waveguide display |
| US20170299956A1 (en) * | 2016-04-13 | 2017-10-19 | Thalmic Labs Inc. | Systems, devices, and methods for focusing laser projectors |
| WO2018187955A1 (en) * | 2017-04-12 | 2018-10-18 | 陈台国 | Near-eye display method having focusing effect |
-
2018
- 2018-12-17 CN CN201811538626.2A patent/CN111323918A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955255A (en) * | 2011-09-26 | 2013-03-06 | 微软公司 | Integrated eye tracking and display system |
| CN103852891A (en) * | 2012-12-03 | 2014-06-11 | 纬创资通股份有限公司 | Head-mounted display device |
| CN106716226A (en) * | 2014-09-16 | 2017-05-24 | 微软技术许可有限责任公司 | Compact projection light engine for diffractive waveguide display |
| CN106199958A (en) * | 2015-05-07 | 2016-12-07 | 尚立光电股份有限公司 | Automatic focusing head-mounted display device |
| US20170299956A1 (en) * | 2016-04-13 | 2017-10-19 | Thalmic Labs Inc. | Systems, devices, and methods for focusing laser projectors |
| WO2018187955A1 (en) * | 2017-04-12 | 2018-10-18 | 陈台国 | Near-eye display method having focusing effect |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109942A (en) * | 2021-03-02 | 2021-07-13 | 联想(北京)有限公司 | Display device and head-mounted display equipment |
| CN113109942B (en) * | 2021-03-02 | 2022-07-26 | 联想(北京)有限公司 | Display device and head-mounted display equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7414792B2 (en) | Method of changing the inter-pupilar distance of a head mounted display while maintaining a constant optical path length | |
| US9274338B2 (en) | Increasing field of view of reflective waveguide | |
| US9001030B2 (en) | Heads up display | |
| US8736963B2 (en) | Two-dimensional exit-pupil expansion | |
| WO2017181864A1 (en) | Near-eye display system | |
| US20090303315A1 (en) | Binocular device using beam splitter (bino-view) | |
| US9091847B2 (en) | Head-mounted image display device | |
| US20180003977A1 (en) | Head mounted imaging apparatus with curved lenslet array | |
| CN102004317A (en) | Spectacles-type image display device | |
| JP2001264681A (en) | Display device | |
| US20130234930A1 (en) | Scanning mirror laser and projector head-up display glasses | |
| JP2018522262A (en) | Near-eye display with stacked optical waveguides | |
| US10412378B2 (en) | Resonating optical waveguide using multiple diffractive optical elements | |
| US5969859A (en) | Binocular night vision goggles, where one ocular could be moved from the beam path | |
| SE451282B (en) | BINOCULES CONSIDERATION TO VIEW THE SAME PICTURE WITH BADA OGONEN AT THE SAME TIME | |
| CN111323918A (en) | Display and imaging sharing light path scheme | |
| KR20200038678A (en) | Complex optical sighting device | |
| KR101941880B1 (en) | Focus Free Type Display Apparatus | |
| US4682864A (en) | Method and apparatus for simultaneously observing a transparent object from two directions | |
| CN107124897A (en) | Monocular microscope for generating 3D rendering | |
| JP2007264029A (en) | Finder optical system and optical equipment mounted with same | |
| US7177080B2 (en) | Method and a device for bi-monocular image transfer | |
| JPH1195158A (en) | Video observation device | |
| CN111323919A (en) | Structure scheme for sharing display and double-sided imaging | |
| US20230314755A1 (en) | Eyepiece for night vision devices capable of injecting a synthetic image with a single optical correction mechanism |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200623 |