CN1862368B - Optical system of portable projector - Google Patents
Optical system of portable projector Download PDFInfo
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- CN1862368B CN1862368B CN2006100794887A CN200610079488A CN1862368B CN 1862368 B CN1862368 B CN 1862368B CN 2006100794887 A CN2006100794887 A CN 2006100794887A CN 200610079488 A CN200610079488 A CN 200610079488A CN 1862368 B CN1862368 B CN 1862368B
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- optical system
- light source
- light
- optical
- lens
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3173—Constructional details thereof wherein the projection device is specially adapted for enhanced portability
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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
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0096—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the lights guides being of the hollow type
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3164—Modulator illumination systems using multiple light sources
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
Abstract
An optical system of a portable projector and a mobile communication terminal using the same are disclosed. The optical system comprises a light transmission member having first and second surfaces, a light source device for emitting light beams onto the first surface of the member, so as to allow the light beams to be transmitted into the member, and one or more optical elements supported on at least one of the first and second surfaces of the member for diffracting the light beams incident from the light source device into the member, and subsequently reproducing and emitting an image from the diffracted light beams, to the outside of the member.
Description
The application requires in the korean patent application No.10-2005-0038394 of submission on May 9th, 2005, the 10-2005-0080894 that on August 31st, 2005 submitted to, the 10-2005-0080895 that on August 31st, 2005 submitted to, the 10-2005-0080899 that on August 31st, 2005 submitted to, the 10-2005-0080898 that on August 31st, 2005 submitted to, the 10-2005-0080897 that on August 31st, 2005 submitted to, the rights and interests of the 10-2005-0091338 that the 10-2005-0089974 that submitted on September 27th, 2005 and on September 29th, 2005 submit to comprise it fully and are incorporated herein by reference at this.
Technical field
The present invention relates to the optical system of projector, and more specifically say, relate to the optical system of portable projector and use the mobile communication terminal of this optical system.
Background technology
The recent trend of display device provides screen sizes and light and thin.In this display device, projector is because it can realize the giant-screen more than or equal to 100 inches, so it becomes bright spot.
This projector is with from micro equipment, and the image projection that produces such as liquid crystal display (LCD) panel, reflectivity liquid crystal on silicon (LCOS) panel or digital micromirror device (DMD) panel is to screen, thus the display device of display image.
Usually,, projector is categorized as single sided board type, dual platen type according to the number of the micro equipment that in projector, uses, or three panel type.
In the single sided board type of projector, with time division way white light is divided into color light component, and the color light component that separates is shone single micro equipment.In the dual platen type of projector, with sky branch and time division way white light is divided into color light component, and color light component is shone two micro equipments.In three panel type projector, in sky branch mode white light is divided into color light component, and color light component is shone three micro equipments.
Fig. 1 is the synoptic diagram that the layout of common single sided board type of projector has been described.Fig. 2 is the skeleton view that the layout of three common panel type projector has been described.
As shown in Figure 1, this single sided board type of projector comprises: light source 2, look drum 3, rod lens 4, illuminating lens 5 and 6, micro equipment 7, prism 8 and projecting lens unit 1.
Shown in the single sided board type of projector in, the light that sends from light source 2 is divided into the red, green and blue light beam by look drum 3 time.By excellent type lens 4 time, should be adjusted (modulate) to have uniform brightness by light beam separately.Then, light beam by illuminating lens 5 and 6 and prism 8 after, be incident on the micro equipment 7.
The light beam of this incident has picture signal by micro equipment 7 time, and is projected on the screen after by prism 8 and projecting lens unit 1.
In addition, as shown in Figure 2, three panel type projector comprise dichronic mirror (dichroic mirror) 9, will be divided into the red, green and blue light beam from the light that light source 2 sends.Should be incident on respectively on the corresponding LCD panel 10 by red, green and blue light beam separately.Then, constitute incident beam to be incident upon on the screen through projecting lens unit 1.
But the problem with existing projector of above-mentioned layout is that they not only need a large amount of optical elements, and because the three dimensional arrangement of its optical system also needs excessive installing space.
The layout of this optical system makes it can not reduce the whole dimension of projector.
And because the propagation path of light from the light source to the projecting lens unit is very long, existing projector stands the loss of light usually.Therefore, existing projector is restricted on the bright and lively image of demonstration.
In addition, because the three dimensional arrangement of optical system, the problem of existing projector is the layout instability of optical element.
Summary of the invention
Therefore, the invention provides a kind of optical system and the mobile communication terminal that uses it of portable projector, it has been avoided basically because the restriction of prior art and one or more problems that shortcoming causes.
The purpose of this invention is to provide a kind of optical system of portable projector and use its mobile communication terminal, it has novel layout, and the minimizing of the whole dimension of projector is realized in space that can the minimum optical system thus.
Another object of the present invention provides a kind of optical system of portable projector and uses its mobile communication terminal, and it can minimize light path, realizes the minimizing of optical loss thus.
A further object of the present invention provides a kind of optical system of portable projector and uses its mobile communication terminal, and it can realize the stable layout of optical element.
Other advantage of the present invention, purpose and feature will partly be described in explanation subsequently, and through following check or study from the practice of the present invention, above-mentioned advantage, purpose and feature are conspicuous for the person of ordinary skill of the art.Objects and advantages of the present invention can realize and obtain as specifically noted in appended instructions and claims and the accompanying drawing.
For realizing these and other advantage of the present invention, and according to purpose of the present invention, as describing particularly and widely here, the optical system of portable projector comprises: the transmittance parts, and it has first surface and second surface; Light source device, it is used for transmitting a light beam to based on external image signal the first surface of these transmittance parts, thereby allows light beam to be transmitted to this transmittance parts; A plurality of optical elements, it is supported on the first surface of these transmittance parts and in the second surface at least one, be used for diffraction (diffracting) and reflection from the light beam of light source device incident to the transmittance parts; And at least one scanning mirror, it is supported on in the first surface of these transmittance parts and the second surface one, be used for to scan the external screen in this transmittance parts outside from this optical element diffraction and beam reflected based on external control signal, wherein this optical element comprises: at least one optical splitter, it is supported on the first surface of these transmittance parts, is used for the light beam of transmission from the specific wavelength of this light source device emission; First lens, it is placed on this optical splitter in the face of on the surface of this light source device, is used for diffraction from this light source device emitted light beams; At least one second lens, it is supported on the first surface of these transmittance parts and in the second surface at least one, be used for diffraction from this optical splitter emitted light beams, so that the beam emissions behind the diffraction is arrived this scanning mirror, wherein, first surface of first lens of incident beam has the grating angle that is used for convergent beam on it, has the grating angle that is used to change beam path from its second surface of launching first lens of light beam.
Here, the transmittance parts can be glass component, transparent plastic part or have atmosphere or the hollow component of vacuum pressure inside.
These transmittance parts can be linearity and flat surfaces.Alternatively, in all surface of these transmittance parts, support on it that at least one surface of optical element can be raised or sunken.
This light source device can be any one that select from laser diode, light emitting diode and organic electroluminescent device.This light source device can be light-emitting component or the light-emitting device array that is used to launch the light beam with single wavelength or has the light beam of the wavelength that differs from one another.
Each optical element can adopt dull and stereotyped form.
According to a further aspect in the invention, provide a kind of optical system of portable projector, it comprises: the transmittance parts, and it has first and second surfaces; Light source device, it is used for transmitting a light beam to based on external image signal the first surface of parts, thereby allows light beam to be transmitted in these parts; One or more optical elements, and be supported at least one of first and second surfaces of these parts, be used for diffraction and reflection from the light beam of light source device incident to these parts, with at least one scanning mirror, it is supported on of first and second surfaces of parts, is used for based on the external screen of external control signal scanning from optical element diffraction and beam reflected to the parts outside.
Here, optical element can comprise: at least one optical splitter, and it is supported on the first surface of parts, is used for the light beam of transmission from the specific wavelength of light source device emission; With at least one lens, it is supported at least one of first and second surfaces of parts, is used for diffraction from the optical splitter emitted light beams, with the light beam of emission diffraction to scanning mirror.And this optical system may further include and is placed on the lip-deep prism of optical splitter in the face of light source device, is used to change the path from the light beam of light source device incident.
This optical element can comprise: at least one optical splitter, and it is supported on the first surface of parts, is used for the light beam of transmission from the specific wavelength of light source device emission; First lens, it is placed on optical splitter in the face of on the surface of light source device, is used for diffraction from the light source device emitted light beams; With at least one second lens, it is supported at least one of first and second surfaces of parts, is used for diffraction from the optical splitter emitted light beams, with the light beam of emission diffraction to scanning mirror.
Here, first surface of first lens of incident beam has the grating angle that is used for convergent beam on it, and can have the grating angle in the path that is used to change light beam from second surface of first lens of its emission light beam.
This optical element can comprise: at least one optical splitter, and it is supported on the first surface of parts, is used for the light beam of transmission from the specific wavelength of light source device emission; First lens, it is placed on optical splitter in the face of on the surface of light source device, is used for diffraction from the light source device emitted light beams; Plate, it is placed on the surface of first lens face to light source device, and has the irregular surface figure of the speckle noise (speckle noise) that is used to remove from the light source device emitted light beams; With at least one second lens, it is supported at least one of first and second surfaces of parts, is used for diffraction from the optical splitter emitted light beams, thereby the light beam of launching this diffraction is to scanning mirror.
This optical system can further comprise driver, with simultaneously at the reciprocal optical splitter of direction, first lens and a plate.
This optical element can comprise: at least one first lens, and it is supported on the first surface of parts, is used for diffraction from the light source device emitted light beams; Second lens, it is supported on the second surface of parts, is used for synthetic light beam from the first lens diffraction; Color filter, it is supported on the first surface of parts, is used for separately from the color light component of the synthetic light beam of second lens; With at least one the 3rd lens, it is supported at least one of first and second surfaces of parts, with diffraction from the color filter emitted light beams, thereby the light beam of launching this diffraction is to scanning mirror.
According to a further aspect in the invention, provide a kind of optical system of portable projector, it comprises: the transmittance parts, and it has first and second surfaces; Light source device, it is used to transmit a light beam to the first surface of parts, thereby allows light beam is transmitted in these parts; One or more first optical elements, it is supported at least one of first and second surfaces of parts, is used for diffraction and the reflection light beam from light source device incident; At least one display element, it is supported at least one of first and second surfaces of parts, is used for receiving reproduced picture under the situation of the first optical element diffraction and beam reflected; With at least one second optical element, it is supported at least one of first and second surfaces of parts, is used to amplify and launch from the image of display element regeneration.
In accordance with a further aspect of the present invention, it provides the mobile communication terminal that uses optical system.This optical system comprise the transmittance parts and append to the transmittance parts, be used to regenerate and launch a plurality of optical elements from the image of incident beam, this mobile communication terminal comprises: main body, it has a plurality of keyboards and hole; Lid, it has display panel and is configured and is connected with main body; The transmittance parts, it is installed in the side surface place that the main body of main body is passed in its hole in main body, and these transmittance parts are suitable for arriving external side of main body by the light beam of hole emission reproduced picture; And light source device, it is installed in the main body, is used to transmit a light beam at least one the surperficial optical element that is affixed to the transmittance parts.
According to another aspect of the invention, a kind of mobile communication terminal that uses optical system is provided, this optical system comprises: the transmittance parts and append to the transmittance parts, be used to regenerate and launch a plurality of optical elements from the image of incident beam, this mobile communication terminal comprises: main body, and it has a plurality of keyboards; Lid, it has display panel and is configured and is connected with main body; Support component, it is pivotally mounted to this lid; Groove, its longitudinal direction with support component in support component forms; Web member, it can slide along groove; Housing, it is connected to an end of this web member, and has the hole that forms in its lateral location; The transmittance parts, it is installed in the housing, is used for launching the outside of the light beam of reproduced picture to housing by this hole; And light source device, it is installed in the housing, is used to transmit a light beam at least one the surperficial optical element that is affixed to the transmittance parts.
Should be appreciated that aforementioned general description of the present invention and following specific descriptions all are exemplary and explanat, and be intended to provide the present invention's further explanation as claimed in claim.
Description of drawings
Accompanying drawing comprises in order further to understand the present invention, and be included into a part that constitutes this instructions in this instructions, these accompanying drawings show one or more embodiment of the present invention, and are used for this instructions principle of the present invention being described.In the accompanying drawings:
Fig. 1 is the view that the layout of common single sided board type of projector has been described;
Fig. 2 is the view that the layout of three common panel type projector has been described;
Fig. 3 A and 3B are the skeleton views that has illustrated according to the optical system of the portable projector of first embodiment of the invention;
Fig. 4 A is the view that the DOE lens in the optical system that can be used on portable projector according to the present invention have been described to 4E;
Fig. 5 is the skeleton view that has illustrated according to the optical system of the portable projector of second embodiment of the invention;
Fig. 6 A and 6B are the views that the grating that forms at the lens surface of Fig. 5 has been described;
Fig. 7 is the skeleton view that has illustrated according to the optical system of the portable projector of third embodiment of the invention;
Fig. 8 is the view that the hologram that produces on the plate of Fig. 7 has been described;
Fig. 9 is the skeleton view that has illustrated according to the optical system of the portable projector of fourth embodiment of the invention;
Figure 10 to 18 is the synoptic diagram that illustrated according to the mobile laser projection phone of the optical system of use portable projector of the present invention.
Embodiment
Below will be in detail with reference to the preferred embodiments of the present invention, the example shown in the drawings.In any possible place, in whole accompanying drawing, use identical reference number to represent same or analogous part.
Notion of the present invention provides a kind of portable projector, and wherein two apparent surfaces at the transmittance parts arrange the stable layout of a plurality of optical elements with the realization optical element, and by the length of transmittance parts transmitted light beam with the minimizing light path.
Optical system of the present invention consists essentially of transmittance parts, light source device and a plurality of optical element.
Here, the transmittance parts can be glass component, transparent plastic part or have atmosphere or the hollow component of vacuum pressure inside.Certainly, should be appreciated that other material can be used for forming the transmittance parts, as long as they have high light transmission efficiencies, and the size of transmittance parts can be determined based on Design for optical system.
When situation needs, make the transmittance parts to have circle, semicircle, triangle or polygonal cross-section.
In an embodiment of the present invention, the transmittance parts are manufactured to and have linearity and flat surfaces.
According to Design for optical system, in all surface of transmittance parts, some surf zones of its upper support optical element are manufactured to raised or sunken.
The design light source device is with on the first surface that transmits a light beam to the transmittance parts, thereby the permission light beam is transmitted in the parts.
Here, light source device can be one that selects from laser diode, light emitting diode and organic electroluminescent device.Preferably, the optical system of this projector comprises laser diode so that reduce the whole dimension of projector.
When situation needed, light source device can be taked the array format of one or more light-emitting components of the light beam that is used to send the light beam with single wavelength or has the wavelength that differs from one another.
In an embodiment of the present invention, this light source device comprises: be used to produce the red light source of red beam, the blue-light source that is used to produce the green light source of blue beam and is used to produce blue beam; This red light source, green light source and blue-light source are placed on the mutually the same surface, make them along same line layout parallel to each other.
This light source device can be supported on the first surface of transmittance parts, maybe can be supported on first surface to separate on another parts of preset distance.
These transmittance parts comprise the second surface in the face of first surface, and at this optical element of at least one upper support on first and second surfaces of transmittance parts.This optical element be used for diffraction from the light beam of light source device incident to the transmittance parts, and next regenerate and launch image on the external screen in the parts outside.
In an embodiment of the present invention, first and second surfaces of these transmittance parts are arranged to face with each other.
Preferably, this optical element can comprise from diffraction optical element, holographic optical elements (HOE), level crossing, one or more elements that micro-display and scanning mirror are selected.Preferably, this optical element can be respectively with the form manufacturing of flat board.
According to Design for optical system, optical element of the present invention can be manufactured to various ways.
In optical system of the present invention, this is supported on optical element on first or the second surface of transmittance parts along same line layout parallel to each other.
Can replace the optical element on the second surface of placing the optical element on the first surface that is supported on the transmittance parts and being supported on the transmittance parts at a predetermined angle.
The reason of this arranged alternate is to minimize transmission path.
Be the configuration of optimization, preferably, on the first surface of transmittance parts, arrange optical element, and on the second surface of transmittance parts, arrange the optical element that does not have driving circuit with driving circuit according to optical system of the present invention.
The reason that needs the optical element of circuit arrangement to be concentrated in a side is the use in maximization space, realizes the remarkable minimizing of the whole dimension of optical system thus.
Simultaneously, optical system of the present invention can use at least one scanning mirror with the image on the scanning external screen, maybe can use micro-display and projecting lens to be used for projects images to external screen.
In the optical system of using scanning mirror, if light source device transmits a light beam to optical element based on external image signal, and optical element diffraction and reflection are from the light beam of light source device incident, then scanning mirror based on external control signal scanning from optical element diffraction and beam reflected, with reproduced picture on the external screen that is positioned at the light transmission department spare outside.
In the optical system of using micro-display, if light source device transmits a light beam to optical element, and optical element diffraction and reflection are from the light beam of light source device incident, then micro-display is receiving reproduced picture under the situation of optical element diffraction and beam reflected, and projecting lens amplifies from the image of micro-display regeneration, thereby the emission enlarged image is on external screen.
Fig. 3 A and 3B are the skeleton views that has illustrated according to the optical system of the portable projector of first embodiment of the invention.
Especially, Fig. 3 A has illustrated the optical system of using scanning mirror, and Fig. 3 B has illustrated the optical system of using micro-display.
As shown in Figure 3A, portable projector of the present invention comprises: transmittance parts 50, light source device 51, first, second and the 3rd beam splitter (beam splitter) 52,53 and 54, first and second mirrors 55 and 56, diffraction lens 57, scanning mirror 58 and a plurality of prism 59.
When situation needed, transmittance parts 50 can have circle, semicircle, triangle or polygonal cross-section.
In an embodiment of the present invention, make transmittance parts 50 to have linearity and flat surfaces.
According to Design for optical system, in all surface of transmittance parts 50, its upper support first, second and the 3rd beam splitter 52,53 and 54, the first and second mirrors 55 and 56, some surf zones of diffraction lens 57 and scanning mirror 58 are manufactured to raised or sunken.
Design light source device 51 to be transmitting a light beam on the first surface of transmittance parts 50 based on external image signal, thereby allows light beam to be transmitted in the transmittance parts 50.
When situation needs,, omit prism if beam splitter replaces by having the optical splitter that is used to change from the grating angle of the beam path of light source device incident.
Here, at the surface formation grating angle of each optical splitter in the face of light source device 51.
Additional have first beam splitter 52 of prism 59 to be supported on the first surface of parts 50, and be used for the light beam of diffraction from red lasing light emitter 51a incident, with the light beam of emission diffraction to the second surface of parts 50.
Additional have second beam splitter 53 of prism 59 to be supported on the first surface of parts 50, and be used for not only diffraction from the light beam of green lasing light emitter 51b incident, and diffraction is from first mirror, 55 beam reflected, with the light beam of emission diffraction to the second surface of transmittance parts 50.
Additional have the 3rd beam splitter 54 of prism 59 to be supported on the first surface of transmittance parts 50, and not only be used for the light beam of diffraction from blue lasing light emitter 51c incident, and diffraction is from second mirror, 56 beam reflected, with the light beam of launching this diffraction to the second surface of parts 50.
The 3rd beam splitter 54 can be when carrying out the total reflection of red and green wavelength the transmission blue wavelength.
Here, diffraction lens 57 can be circular diffraction optical element.
Preferably, first and second surfaces of arranged light transmitting member 50 face with each other.Preferably, make first, second and the 3rd beam splitter 52,53 and 54, the first and second mirrors 55 and 56, diffraction lens 57 and scanning mirror 58 with the form of flat board respectively.
In addition, in the first surface upper support of transmittance parts 50 first, second and the 3rd beam splitter 52,53 and 54 and scanning mirror 58, simultaneously along identical line layout parallel to each other, in second surface upper support first and second mirrors 55 of transmittance parts 50 and 56 and diffraction lens 57, and simultaneously along identical line layout parallel to each other.
At a predetermined angle, be arranged alternately in first, second and the 3rd beam splitter 52,53 of the first surface upper support of transmittance parts 50 and 54 and scanning mirror 58, with first and second mirror 55 and 56 in the second surface upper support of transmittance parts 50, and diffraction lens 57.
The reason of this arranged alternate is to minimize transmission path.
Be the layout of optimization, need on the first surface of transmittance parts 50, arrange optical element, and on the second surface of transmittance parts 50, arrange the optical element that does not have driving circuit with driving circuit according to optical system of the present invention.
The reason that needs the optical element of circuit arrangement to be concentrated in a side is the use of minimize spatial, realizes the remarkable minimizing of the size of optical system thus.
Now, the method for work that explanation is had above-mentioned configuration according to portable projector of the present invention.
As shown in Figure 3A, at first, comprise that the light source device 51 of red lasing light emitter 51a, green lasing light emitter 51b and blue lasing light emitter 51c transmits a light beam on the first surface of transmittance parts 50 based on external image signal.
Be incident on first beam splitter 52 that appends to prism 59 on the first surface that is supported on transmittance parts 50 simultaneously from red lasing light emitter 51a emitted light beams.
Next, first beam splitter, 52 diffraction incident beams are with first mirror 55 of light beam to the second surface that is positioned at light transmission department spare 50 of emission diffraction.
Afterwards, second beam splitter 53 of first mirror 55 reflection on from the light beam of first beam splitter, 52 diffraction to the first surface that is positioned at light transmission department spare 50.
Simultaneously, be incident on the first surface that is supported on transmittance parts 50 and append to simultaneously on second beam splitter 53 of prism 59 from green lasing light emitter 51b emitted light beams.
Design second beam splitter 53 with transmit green wavelength in the total reflection of carrying out red wavelength.Therefore, not only diffraction is from the blue beam of green lasing light emitter 51b incident for second beam splitter 53, and diffraction is from the red beam of first mirror 55 reflection, with the light beam of emission diffraction second mirror 56 to the second surface that is positioned at light transmission department spare 50.
Afterwards, three beam splitter 54 of second mirror 56 reflection on from the light beam of second beam splitter, 53 diffraction to the first surface that is positioned at light transmission department spare 50.
Simultaneously, be incident on the first surface that is supported on transmittance parts 50 and append on the 3rd beam splitter 54 of prism 59 from blue lasing light emitter 51c emitted light beams.
Design the 3rd beam splitter 54 with transmission blue wavelength in the full emission of carrying out red and green wavelength.Therefore, the 3rd beam splitter 54 not only diffraction is gone back redness and the green beam of diffraction from the reflection of second mirror 56 from the blue beam of blue lasing light emitter 51c incident, with the light beam of launching this diffraction diffraction lens 57 to the second surface that is positioned at light transmission department spare 50.
Afterwards, be incident on second mirror 58 on the first surface that is positioned at parts 50 from the red, green and blue light beam of diffraction lens 57 diffraction on.Thus, scanning mirror 58 scannings and emitting incident light bundle are on external screen.
Here, scanning mirror 58 can comprise one-dimensional scanning mirror that flatly is scanned into irradiating light beam and the one-dimensional scanning mirror that vertically is scanned into irradiating light beam, maybe can be the two-dimensional scan mirror that vertically and flatly is scanned into irradiating light beam.
In the present invention, automatically controlled beam flying mirror (galvano mirror) is as scanning mirror 58.
Fig. 3 B has illustrated and has used micro-display to replace the optical system of scanning mirror.
Micro-display 60 is used for receiving reproduced picture under the situation of the light beam of diffraction lens 57 diffraction.In this case, provide projecting lens 61 with the image of amplification, thereby launch this enlarged image on external screen from micro-display 60 regeneration.
Fig. 4 A is the DOE lens that illustrated according in the optical system that can be used on portable projector of the present invention to 4E.According to Design for optical system, can use multiple DOE lens.
Fig. 5 is the skeleton view that has illustrated according to the optical system of the portable projector of second embodiment of the invention.
As shown in Figure 5, projector of the present invention comprises: transmittance parts 50, light source device 51, first, second and the 3rd lens 72,73 and 74, first, second and the 3rd mirror 75,76 and 77, diffraction lens 78 and scanning mirror 79.
Make first lens 72 make the upper surface of laser beam incident on it have with laser beam from the different grating state of its lower surface of its emission.
Shown in Fig. 6 A and 6B, the laser beam incident surface of first lens 72 has the grating angle that is used for the convergent laser bundle, and the laser beam emitting surface of first lens 72 has the grating angle in the path that is used to change laser beam.
The optical grating construction of this lens can change in many ways according to Design for optical system.
Though second lens 73 have the optical grating construction identical with first lens 72, its difference is that incident thereon is provided with the beam splitter (not shown) from the surface of second lens 73 of first mirror, 75 beam reflected, and this beam splitter is suitable for transmit green wavelength in the total reflection of carrying out red wavelength.
The 3rd lens 74 are supported on the first surface of transmittance parts 50, and are used for not only diffraction from the light beam of blue lasing light emitter 51c incident, and diffraction is from second mirror, 76 beam reflected, with the light beam of emission diffraction to the second surface of parts 50.
Though the 3rd lens 74 have the optical grating construction identical with first lens 72, its difference is to provide the beam splitter (not shown) in incident from the surface of the 3rd lens 74 of second mirror, 76 beam reflected, and this beam splitter is suitable for transmission indigo plant wavelength in the total reflection of carrying out red and green wavelength.
At second surface upper support first mirror 75 of parts 50, and it is used to reflect the light beam from first lens, 72 diffraction.
The 3rd mirror 77 is supported on the second surface of parts 50, and it is used to reflect the light beam from the 3rd lens 73 diffraction.
Here, scanning mirror 79 can use the automatically controlled beam flying mirror that is scanned into irradiating light beam with two-dimensional approach.
Alternatively, this scanning mirror 79 can be replaced by two scanning mirrors.
In as the embodiment that selects, two scanning mirrors comprise automatically controlled beam flying mirror that flatly is scanned into irradiating light beam and the automatically controlled beam flying mirror that vertically is scanned into irradiating light beam.
Though do not illustrate, with the identical mode of the invention described above first embodiment, the optical system of making according to second embodiment of the invention replaces scanning mirror to use micro-display (micro-display).
Fig. 7 is the skeleton view that has illustrated according to the optical system of the portable projector of third embodiment of the invention.
As shown in Figure 7, in the third embodiment of the present invention, provide speckle noise remover (speckle noise remover) 80 to remove the noise of laser beam.
Speckle noise remover 80 is positioned on the first surface of parts 50.
This speckle noise remover 80 comprises at least one optical splitter 83, is positioned at the lens 82 on the optical splitter 83 and is positioned at plate 81 on the lens 82, the integrated each other formation of this optical splitter 83, lens 82 and plate 81.
Here, lens 82 can be the DOE lens with the grating angle shown in Fig. 6 A and 6B.
In the present invention, preferably, random phase plate (RPP) is as plate 81.
As shown in Figure 8, needing the figure of plate 81 is the holograms that generated by computing machine.The phase place that this figure changes laser beam is π.
The area of this plate 81 is preferably more than the area of optical splitter 83 or lens 82.
Provide driver 85 with simultaneously with the reciprocal optical splitter 83 of direction, lens 82 and a plate 81.
Here, configuration driven device 85 is with the meticulous vibration of the plate 81 of the speckle noise remover 80 that causes the speckle noise that is used to remove light beam.
Can be used as driver 85 though can cause any other device of the vibration with short essay, preferably use electromagnetic component by the electric field vibration, or the piezoelectric element of vibration in by piezoelectricity expansion or compression.
Now, the path that explanation is had above-mentioned configuration according to the light beam of third embodiment of the invention.
As shown in Figure 7, be incident on the first surface of parts 50, make them pass through speckle noise remover 80 from light source device 51 emitted laser bundles.Thus, removed the light beam of speckle noise by mirror on the second surface that is positioned at parts 50 86,87 and 88 reflections.
Next, beam reflected by DOE lens 89 and 90 and scanning mirror 91 after, be launched on the external screen.
Here, scanning mirror 91 can be the automatically controlled beam flying mirror that is scanned into irradiating light beam with two-dimensional approach.
When situation needed, scanning mirror 91 can be replaced by two scanning mirrors.
Though do not illustrate, with the identical mode of the invention described above first embodiment, can make according to the optical system of third embodiment of the invention and replace scanning mirror to use micro-display.
Fig. 9 is the skeleton view that has illustrated according to the optical system of the portable projector of fourth embodiment of the invention.
As shown in Figure 9, the optical system according to fourth embodiment of the invention comprises light source device 51, a plurality of DOE lens 100,101 and 105, color filter 102 and first and second scanning mirror 103 and 104.
From light source device 51 emitted laser bundles by DOE lens 105 diffraction.Afterwards, the light beam of this diffraction is once more by DOE lens 100 diffraction on the second surface that is positioned at parts 50.
Next, the light beam of diffraction is synthetic by DOE lens 101, and synthetic afterwards light beam by the color filter on the second surface that is positioned at parts 50 102 separately.
After by first and second scanning mirror 103 and 104 meetings, the light beam that separates is launched on the external screen.
Here, first scanning mirror 103 can be the automatically controlled beam flying mirror that flatly is scanned into irradiating light beam, and second scanning mirror 104 can be the automatically controlled beam flying mirror that vertically is scanned into irradiating light beam.
When situation needed, two scanning mirrors can be replaced by the single automatically controlled beam flying mirror that is scanned into irradiating light beam with two-dimensional approach.
Though do not illustrate, in the mode identical with first embodiment of the invention described above, the optical system that can make according to fourth embodiment of the invention replaces scanning mirror to use micro-display.
The optical system according to portable projector of the present invention with above-mentioned method of work not only can realize the stable layout of optical element, also because reduced the length of light path by transmittance parts transmitted light beam.Therefore, optical system of the present invention can realize the minimizing of size and weight, and therefore, is suitable for portable projector.
Figure 10 and 11 has illustrated that use according to the present invention is used for the synoptic diagram of mobile laser projection phone of the optical system of portable projector.Shown in Figure 10 and 11, optical system of the present invention can be conveniently used in having the equipment of little inner space, such as mobile phone.
Mobile phone 110 comprises main body 112 and lid 111.
Be provided with a plurality of keyboards and hole 113 to main body 112.And lid 111 is provided with display panel, and it is connected with main body 112.
Shown in Figure 12 and 13, alternatively, additional have the transmittance parts 50 of optical element and light source device 51 to be protected by housing 114.
In this case, the peripheral position of housing 114 can be passed in hole 113, makes the light beam of reproduced picture can be transmitted into the outside of housing 114 from transmittance parts 50.
Around the peripheral surface of housing 114 is in hole 113, form and a plurality ofly to swell (knurl) 115.
Figure 14 and 15 is views that the multiple example of the mobile phone that uses the projector that holds as shown in figure 12 in housing has been described.
Figure 16,17 and 18 has illustrated another example of the projector of installing in the lid of mobile phone.
Shown in Figure 16,17 and 18, the main body 112 that is provided with the mobile phone of a plurality of keyboards is connected the lid 111 that is provided with display panel.
In groove 117, hold web member 118 to slide along groove 117.The housing 114 that has a hole in its lateral location is connected to an end of web member 118.
In this case, transmittance parts 50 are installed in the housing 114, make the light beam of reproduced picture be transmitted into the outside of housing 114 by the hole from transmittance parts 50.
From foregoing description as can be seen, according to the optical system of portable projector of the present invention with use in its mobile transmission terminal, arrange a plurality of optical elements two apparent surfaces of transmittance parts, thus the layout of stable optical element.In addition, the present invention allows the light beam transmission by the transmittance parts.This has the effect that reduces optical path length.
Therefore, the present invention can realize the reduction of the size and the weight of projector.Therefore, the present invention can be applicable to the portable set of all kinds, such as mobile phone, and makes it possible to require to carry out multiple design according to situation, produces wider range of application.
Clearly can make multiple modifications and changes to those skilled in the art to the present invention.Therefore, the invention is intended to cover the modifications and variations of the present invention that provide in claims and the equivalent scope thereof.
Claims (21)
1. the optical system of a portable projector, it comprises:
The transmittance parts, it has first and second surfaces;
Light source device, it is used for transmitting a light beam to based on external image signal the first surface of these transmittance parts, thereby allows this light beam to be transmitted in these transmittance parts;
A plurality of optical elements, it is supported on the first surface of these transmittance parts and in the second surface at least one, be used for diffraction and reflection from the light beam of light source device incident to these transmittance parts; And
At least one scanning mirror, it is supported on in the first surface of these transmittance parts and the second surface one, is used for will scanning the external screen in this transmittance parts outside from this optical element diffraction and beam reflected based on external control signal,
Wherein this optical element comprises:
At least one optical splitter, it is supported on the first surface of these transmittance parts, is used for the light beam of transmission from the specific wavelength of this light source device emission;
First lens, it is placed on this optical splitter in the face of on the surface of this light source device, is used for diffraction from this light source device emitted light beams;
At least one second lens, it is supported on the first surface of these transmittance parts and in the second surface at least one, be used for diffraction from this optical splitter emitted light beams, so that the beam emissions behind the diffraction is arrived this scanning mirror, wherein, first surface of first lens of incident beam has the grating angle that is used for convergent beam on it, and has the grating angle that is used to change beam path from its second surface of launching first lens of light beam.
2. optical system as claimed in claim 1, wherein, these transmittance parts are glass component, transparent plastic part or have atmosphere or the hollow component of vacuum pressure inside.
3. optical system as claimed in claim 1, wherein, these transmittance parts have circle, semicircle or polygonal cross-section.
4. optical system as claimed in claim 1, wherein, these transmittance parts have linearity and flat surfaces.
5. optical system as claimed in claim 1, wherein, in all surface of transmittance parts, at least one surface that optical element is installed on it is raised or sunken.
6. optical system as claimed in claim 1, wherein, first and second surfaces of these transmittance parts face with each other.
7. optical system as claimed in claim 1, wherein, this light source device is any one that select from laser diode, light emitting diode and organic electroluminescent device.
8. optical system as claimed in claim 1, wherein, this light source device is light-emitting component or the light-emitting device array that is used to launch the light beam with single wavelength or has the light beam of the wavelength that differs from one another.
9. optical system as claimed in claim 1, wherein, this light source device is installed on the first surface of these transmittance parts, perhaps separates predetermined distance with this first surface.
10. optical system as claimed in claim 1, wherein, this light source device comprises the red light source that is used to produce red beam, the blue-light source that is used to produce the green light source of blue beam and is used to produce blue beam.
11. optical system as claimed in claim 10, wherein, this red light source, green light source and blue-light source quilt are along identical line layout parallel to each other.
12. optical system as claimed in claim 1, wherein, this optical element comprises one or more elements of selecting from diffraction optical element, holographic optical elements (HOE), level crossing, micro-display and scanning mirror.
13. optical system as claimed in claim 1, wherein, each optical element is taked dull and stereotyped form.
14. optical system as claimed in claim 1, wherein, the optical element of installing each other on the similar face of these transmittance parts is arranged parallel to each other along identical line.
15. optical system as claimed in claim 1 wherein, should alternately be placed with the optical element in the second surface upper support of transmittance parts at a predetermined angle at the optical element of the first surface upper support of transmittance parts.
16. optical system as claimed in claim 1 wherein, is arranged the optical element with driving circuit on one of first and second surfaces of transmittance parts, and arranges the optical element that does not have driving circuit on another surface.
17. optical system as claimed in claim 1 further comprises:
Plate, it is installed on the first surface of first lens face to light source device, and has the irregular surface figure that is used to remove from the speckle noise of light source device emitted light beams.
18. optical system as claimed in claim 17, wherein, this optical splitter, these first lens and this plate are formed integrally as each other.
19. optical system as claimed in claim 17, it further comprises:
Driver, it is simultaneously with reciprocal this optical splitter of a direction, these first lens and this plate.
20. optical system as claimed in claim 19, wherein, this driver is electromagnetic component or piezoelectric element.
21. optical system as claimed in claim 17, wherein, this plate has the area greater than the area of the optical splitter or first lens.
Applications Claiming Priority (24)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050038394A KR100767671B1 (en) | 2005-05-09 | 2005-05-09 | optical system for potable projector |
| KR10-2005-0038394 | 2005-05-09 | ||
| KR1020050038394 | 2005-05-09 | ||
| KR1020050080895A KR101169275B1 (en) | 2005-08-31 | 2005-08-31 | potable projector |
| KR10-2005-0080898 | 2005-08-31 | ||
| KR1020050080894 | 2005-08-31 | ||
| KR1020050080898 | 2005-08-31 | ||
| KR10-2005-0080894 | 2005-08-31 | ||
| KR10-2005-0080899 | 2005-08-31 | ||
| KR1020050080898A KR100739557B1 (en) | 2005-08-31 | 2005-08-31 | potable projector |
| KR1020050080895 | 2005-08-31 | ||
| KR10-2005-0080895 | 2005-08-31 | ||
| KR10-2005-0080897 | 2005-08-31 | ||
| KR1020050080897 | 2005-08-31 | ||
| KR1020050080899 | 2005-08-31 | ||
| KR1020050080899A KR100739556B1 (en) | 2005-08-31 | 2005-08-31 | potable projector |
| KR1020050080894A KR101141653B1 (en) | 2005-08-31 | 2005-08-31 | potable projector |
| KR1020050080897A KR100720591B1 (en) | 2005-08-31 | 2005-08-31 | potable projector |
| KR10-2005-0089974 | 2005-09-27 | ||
| KR1020050089974 | 2005-09-27 | ||
| KR1020050089974A KR100781265B1 (en) | 2005-09-27 | 2005-09-27 | A mobile phone having with projection function |
| KR1020050091338 | 2005-09-29 | ||
| KR1020050091338A KR100710371B1 (en) | 2005-09-29 | 2005-09-29 | Optical system for portable projector |
| KR10-2005-0091338 | 2005-09-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1862368A CN1862368A (en) | 2006-11-15 |
| CN1862368B true CN1862368B (en) | 2010-04-07 |
Family
ID=37389830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100794887A Active CN1862368B (en) | 2005-05-09 | 2006-05-09 | Optical system of portable projector |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100767671B1 (en) |
| CN (1) | CN1862368B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100826330B1 (en) * | 2005-09-22 | 2008-05-02 | 삼성전기주식회사 | Projector using in mobile unit |
| KR100826331B1 (en) * | 2005-09-22 | 2008-05-02 | 삼성전기주식회사 | Projector using in mobile unit |
| KR100832618B1 (en) * | 2005-09-27 | 2008-05-27 | 삼성전기주식회사 | Mobile projector using scan of horizontal/vertical direction |
| JP4891840B2 (en) * | 2007-06-08 | 2012-03-07 | 浜松ホトニクス株式会社 | Spectroscopic module |
| US7993012B2 (en) * | 2008-09-30 | 2011-08-09 | Microvision, Inc. | Laser display system with optical feedback configured to reduce speckle artifacts |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5224198A (en) * | 1991-09-30 | 1993-06-29 | Motorola, Inc. | Waveguide virtual image display |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0384538A (en) * | 1989-08-29 | 1991-04-10 | Canon Inc | Projection type display device |
| KR19990055242A (en) * | 1997-12-27 | 1999-07-15 | 전주범 | Projection type image display device |
| KR20000003888A (en) * | 1998-06-29 | 2000-01-25 | 전주범 | Project-type image display device |
| KR20000044177A (en) * | 1998-12-30 | 2000-07-15 | 전주범 | Projection type image display device |
| KR20000044178A (en) * | 1998-12-30 | 2000-07-15 | 전주범 | Projection type image display device |
-
2005
- 2005-05-09 KR KR1020050038394A patent/KR100767671B1/en active IP Right Grant
-
2006
- 2006-05-09 CN CN2006100794887A patent/CN1862368B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5224198A (en) * | 1991-09-30 | 1993-06-29 | Motorola, Inc. | Waveguide virtual image display |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060116050A (en) | 2006-11-14 |
| KR100767671B1 (en) | 2007-10-18 |
| CN1862368A (en) | 2006-11-15 |
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