CN111338162A - Common image source display projection switching scheme - Google Patents

Common image source display projection switching scheme Download PDF

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Publication number
CN111338162A
CN111338162A CN201811544914.9A CN201811544914A CN111338162A CN 111338162 A CN111338162 A CN 111338162A CN 201811544914 A CN201811544914 A CN 201811544914A CN 111338162 A CN111338162 A CN 111338162A
Authority
CN
China
Prior art keywords
projection
image source
light
polarized light
pbs 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
Application number
CN201811544914.9A
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Chinese (zh)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shi Xuanjie
Original Assignee
Shi Xuanjie
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shi Xuanjie filed Critical Shi Xuanjie
Priority to CN201811544914.9A priority Critical patent/CN111338162A/en
Publication of CN111338162A publication Critical patent/CN111338162A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/142—Adjusting of projection optics
    • 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
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2066—Reflectors in illumination beam
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2073—Polarisers in the lamp house

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

The invention discloses a display projection switching scheme of a common image source. The image source is used for displaying the image on the glasses, and meanwhile, the projection mode can be switched to project the image content to the outside for displaying.

Description

Common image source display projection switching scheme
Technical Field
The present invention relates to a display projection scheme, and more particularly, to a display projection switching scheme for a common image source.
Background
The existing near-eye display scheme only enables a person wearing near-eye display glasses to see a picture, content cannot be shared to people who do not wear the near-eye display glasses in time, and extra equipment is required to be added if the content needs to be shared.
Disclosure of Invention
The invention provides a display projection switching scheme of a common image source. The image source is used for displaying the image on the glasses, and meanwhile, the projection mode can be switched to display the image content in a projection mode.
The invention is realized by the following technical scheme:
a common image source display projection switching scheme comprises an image source, a light source, a PBS prism, a sliding reflection wave plate, a projection reflection surface, a display output part and a projection output part.
The image source is a reflective image source shared by display and projection.
The light source is a light source with adjustable brightness, and is used for displaying when the brightness is low and for projecting when the brightness is high.
The image source is on one side of the PBS prism and the sliding reflective wave plate is on the other side of the PBS prism, which can be slid out of plane from the PBS prism surface.
The sliding reflection wave plate adopts an achromatic wave plate with a total reflection surface, so that the polarization state of the light reflected back after entering the glass slide is changed.
The display output part adopts a transmission type near-eye display output scheme.
The projection output part is a projection lens.
The projection reflecting surface is used for reflecting the projection forward, and the projection direction can be adjusted by adjusting the angle of the projection reflecting mirror.
The principle of the invention is as follows:
when the scheme displays an image, the sliding reflection wave plate slides to the lower part of the PBS prism, and the PBS prism is not shielded.
The light source is set to be low in brightness, light emitted by the light source is S polarized light, the PBS prism reflects the light rays to enter the image source, the light rays are converted into P polarized light after being reflected from the image source, and the P polarized light penetrates through the PBS prism to enter the display output part to output a near-to-eye display picture.
When the scheme is switched to the projection mode, the sliding reflection wave plate moves to the side edge of the PBS prism to shield the light of the PBS prism from entering the display output part. At the moment, light emitted by the light source is switched into high-brightness S polarized light, the S polarized light is reflected by the PBS prism and enters the image source, light reflected by the image source is changed into P polarized light, the P polarized light penetrates through the PBS prism and reaches the sliding reflection wave plate, the light is changed into S polarized light after being reflected by the sliding reflection wave plate, the S polarized light enters the PBS prism again, the PBS prism reflects the light and reaches the projection reflection surface, and the projection reflection surface reflects the light to a projection output part to project images.
The invention has the advantages that one image source can be used for displaying virtual pictures on the glasses, meanwhile, the projection mode can be instantly switched to project the pictures to the outside, and the system has very small volume and cost.
Drawings
Fig. 1 and 2 are schematic diagrams of the present invention.
Detailed Description
The technical scheme of the invention is further described in the following with the accompanying drawings.
In fig. 1, 1 is a light source, 2 is an image source, 3 is a PBS prism, 4 is a sliding reflective wave plate, and 5 is a display output portion.
When an image is displayed, as shown in fig. 1, S-polarized light emitted from the light source 1 reaches the PBS prism 3 downward, the PBS prism 3 reflects the S-polarized light to the left to reach the image source 2, the image source 2 reflects the light to become P-polarized light, and the P-polarized light passes through the PBS prism 3 to reach the display output section 5.
When switching to the projection mode, as shown in fig. 2, 4 is a sliding reflection wave plate that slides to the side of the PBS prism, 6 is a projection reflection surface, 7 is a projection output section, and 8 is a projection imaging surface.
In the projection mode, the light source enhances the brightness to output S polarized light, the S polarized light is reflected by the PBS prism to enter the image source, the image source reflects and outputs P polarized light, the P polarized light passes through the PBS prism, the light cannot enter the display output part due to the shielding of the sliding reflection wave plate 4, the light is reflected by the sliding reflection wave plate to form S polarized light to enter the PBS prism, the S polarized light is reflected downwards by the PBS prism to reach the projection reflection surface 6, then the projection reflection surface 6 reflects the light forwards, and the S polarized light is projected and output through the projection output part 7.
The projection plane and the display plane in the figure are in the same direction, and if the projection direction needs to be adjusted, the projection reflecting surface 6 is adjusted.
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 (3)

1. A common image source display projection switching scheme is characterized by comprising an image source, a light source, a PBS prism, a sliding reflection wave plate, a projection reflection surface, a display output part and a projection output part.
2. The switching scheme for display and projection of a common image source as claimed in claim 1, wherein when operating in the display mode, the sliding reflective wave plate slides under the PBS prism, the light source emits S-polarized light with low brightness, the light is reflected by the PBS prism to enter the image source, the image source is reflected to become P-polarized light, and the P-polarized light passes through the PBS prism to enter the display output portion to display the picture.
3. The switching scheme for display and projection of a common image source as claimed in claim 1, wherein when switching to the projection mode, the sliding reflective wave plate is moved to a side of the PBS prism, at which time the light source is switched to emit S polarized light with high brightness, the S polarized light is reflected by the PBS prism to enter the image source, the light reflected by the image source is changed into P polarized light, the P polarized light passes through the PBS prism to reach the sliding reflective wave plate, the light is reflected by the sliding reflective wave plate to become S polarized light, the S polarized light reaches the PBS prism again to be reflected to the projection mirror, the projection mirror reflects the light to a projection output part of the projection picture, and the angle of the projection mirror is adjusted to adjust the projection direction.
CN201811544914.9A 2018-12-18 2018-12-18 Common image source display projection switching scheme Pending CN111338162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811544914.9A CN111338162A (en) 2018-12-18 2018-12-18 Common image source display projection switching scheme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811544914.9A CN111338162A (en) 2018-12-18 2018-12-18 Common image source display projection switching scheme

Publications (1)

Publication Number Publication Date
CN111338162A true CN111338162A (en) 2020-06-26

Family

ID=71181326

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811544914.9A Pending CN111338162A (en) 2018-12-18 2018-12-18 Common image source display projection switching scheme

Country Status (1)

Country Link
CN (1) CN111338162A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09160126A (en) * 1995-12-08 1997-06-20 Fujitsu General Ltd Light source for liquid crystal projector
US20030218724A1 (en) * 2002-02-26 2003-11-27 Hitachi, Ltd. Optical unit and projection type projector apparatus using the same
CN1932581A (en) * 2005-09-13 2007-03-21 香港亚高光电有限公司 Optical projecting system utilizing integrated colour wave filter on silicon plate liquid crystal microdisplay LCOS
CN101782715A (en) * 2009-01-16 2010-07-21 索尼公司 Projection image display apparatus and projection optical system
CN201689259U (en) * 2010-01-15 2010-12-29 上海三鑫科技发展有限公司 Micro projection module and equipment
CN104142605A (en) * 2014-07-14 2014-11-12 深圳雅图数字视频技术有限公司 Projector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09160126A (en) * 1995-12-08 1997-06-20 Fujitsu General Ltd Light source for liquid crystal projector
US20030218724A1 (en) * 2002-02-26 2003-11-27 Hitachi, Ltd. Optical unit and projection type projector apparatus using the same
CN1932581A (en) * 2005-09-13 2007-03-21 香港亚高光电有限公司 Optical projecting system utilizing integrated colour wave filter on silicon plate liquid crystal microdisplay LCOS
CN101782715A (en) * 2009-01-16 2010-07-21 索尼公司 Projection image display apparatus and projection optical system
CN201689259U (en) * 2010-01-15 2010-12-29 上海三鑫科技发展有限公司 Micro projection module and equipment
CN104142605A (en) * 2014-07-14 2014-11-12 深圳雅图数字视频技术有限公司 Projector

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Application publication date: 20200626