CN101266396A - Projector - Google Patents
Projector Download PDFInfo
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- CN101266396A CN101266396A CNA2007100873690A CN200710087369A CN101266396A CN 101266396 A CN101266396 A CN 101266396A CN A2007100873690 A CNA2007100873690 A CN A2007100873690A CN 200710087369 A CN200710087369 A CN 200710087369A CN 101266396 A CN101266396 A CN 101266396A
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- curved surface
- light
- projector
- light source
- led
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Abstract
The invention provides a projector, which includes a curved surface light source device, an image modulation device and a projection lens. The curved surface light source device is used to produce a bundle of light. The image modulation device is used to selectively modulate the bundle of light. The projection lens is used to project and image the bundle of light modulated by the image modulation device. Ulteriorly, the curved surface light source device contains a curved surface, on which a plurality of diode illuminating devices are provided. Each diode illuminating device contains a red light LED, a green light LED and a blue light LED. These LEDs of these diode illuminating devices controlled by the image modulation device in conjunction with a control circuit irradiate, the invention projecting camera is not needed to provide with a light combining device and a color block, thereby reducing volume and being able to maintain high brightness.
Description
Technical field
The present invention is about a kind of projector, and especially about a kind of projector with a curved surface light source device (Curvature light device).
Background technology
Because the light that light source produced of projector is modulated again through a projecting lens projection imaging through an image modulating device, therefore projector needs the enough light sources of a brightness evenly to mix through a Multiplexing apparatus, modulate this mixing light through this image modulating device again, at last the light that will modulate by this projecting lens clearly projection imaging on a screen.See also Fig. 1, Fig. 1 illustrates the synoptic diagram of a traditional projector 1.In the configuration of most projector, be provided with a collector lens 13 at the light source 11 and 12 of the Multiplexing apparatus of projector 1, enter this Multiplexing apparatus 12 to converge more light that emit by this light source 11.And the light that mixes through this Multiplexing apparatus 12 is through lens 14 and face mirror 15,16 (deciding on product structure design) and directive one image modulating device 17.At last, modulated light is again via a projecting lens 18 projection imaging to screen S 1.These devices, light source etc. have all accounted for suitable volume, and therefore, the volume of projector 1 is high always.
Though light source is replaced as light emitting diode (Light emitting diode, LED) can significantly reduce the volume of light source and the use that can further omit halo, but keeping of brightness is still an important problem, and devices such as Multiplexing apparatus and follow-up lens thereof and face mirror have still accounted for no small volume, make the volume of projector reduce limited.
Therefore, be necessary to provide a kind of and have the projector of new optical system framework to address the above problem.
Summary of the invention
One object of the present invention is to provide a kind of projector with curved surface light source device.
Another object of the present invention is to provide a kind of projector as curved surface light source with a plurality of LED that has.
Projector of the present invention comprises curved surface light source device, image modulating device and projecting lens.This curved surface light source device is in order to produce Ray Of Light.This image modulating device is in order to optionally to modulate this bundle light.This projecting lens is in order to will be through this bundle ray cast imaging of this image modulating device modulation.By this, this projector can directly utilize the geometry of this curved surface light source device should restraint the light bunching, and need not to utilize extra lens to come this bundle light of bunching.This projector can regulate the light source density on this curved surface light source device so that this bundle light is even by control setting, maybe can provide the Multiplexing apparatus of similar functions with this bundle light of homogenising and need not extra integration rod.And this curved surface light source device provides an area source, and it can be made of a plurality of pointolites, therefore can provide the brightness that traditional projector uses a few pointolite to provide is provided.Providing under the same brightness condition, this curved surface light source device also can be avoided using high-power pointolite and produce the problem in the heat radiation and can prolong light source life.
In addition, this curved surface light source device can be provided with a plurality of diode illuminating devices by a curved surface thereon.A diode illuminating device in these diode illuminating devices can comprise at least one LED or at least one laser diode, yet in normal conditions, each diode illuminating device can comprise a red-light LED, a green light LED and a blue-ray LED.By this, projector of the present invention can omit a colour wheel and directly cooperate this image modulating device to control red-light LED, green light LED and the blue-ray LED of these diode illuminating devices with a control circuit luminous.That is to say that these LED of this control circuit may command are luminous so that this curved surface light source device produces ruddiness, green glow, blue light or its mixed light.And this curved surface light source device can directly produce monochromatic light and can not reduce brightness because of filter effect, and this monochromatic light can be controlled by this control circuit, and these LED are luminous to have higher color range to show.By this, projector of the present invention can provide more traditional projector better color representation.
In one embodiment, the image modulating device of this projector can be a digital micro-mirror device (Digital micromirror device).Therefore, this bundle light that this curved surface light source device produces is modulated reflexing to this projecting lens through this digital micro-mirror device, and on this projecting lens projection imaging to a screen.
Similarly, in another specific embodiment, the image modulating device of this projector can be a liquid crystal indicator (Liquid crystal display device).Therefore, this bundle light that this curved surface light source device produces is through this liquid crystal indicator modulation, refracting to this projecting lens, and on this projecting lens projection imaging to a screen.
Therefore, directly utilize a curved surface light source device to provide enough according to projector of the present invention and uniform surface light source to omit the lens of Multiplexing apparatus and corresponding configuration, the significantly volume of reduced projection machine.Further, projector of the present invention can utilize a plurality of LED to form a curved surface light source, removes the homogeneity that can control emission light by configuration density, and the use that higher color range can be provided and omit colour wheel, the further volume of reduced projection machine.
Can be further understood by the following detailed description and accompanying drawings about the advantages and spirit of the present invention.
Description of drawings
Fig. 1 illustrates the synoptic diagram of a traditional projector.
Fig. 2 illustrates the synoptic diagram according to the projector of one first preferred embodiment.
Fig. 3 illustrates the synoptic diagram according to the projector of one second preferred embodiment.
Embodiment
See also Fig. 2, Fig. 2 illustrates the synoptic diagram according to the projector 2 of one first preferred embodiment.Projector 2 of the present invention comprises a curved surface light source device 21, an image modulating device 22 and a projecting lens 23.This curved surface light source device 21 comprises a curved surface 212.This curved surface 212 is provided with a plurality of diode illuminating devices 214.These curved surface 212 usefulness are so that these diode illuminating devices 214 can produce a branch of interior poly-light.This bundle light roughly converges on the focus of this projecting lens 23, and this geometric configuration by 23 of the radius of this curved surface 212 and this curved surface light source device 21, this image modulating device 22 and this projecting lens decides.According to this first preferred embodiment, the radius of this curved surface 212 is 55mm, and the distance that this curved surface light source device 21 and this image modulating device are 22 is 38mm, and the distance of 23 of this image modulating device 22 and this projecting lens is 35mm.Though whether suitable the focal length of this projecting lens 23 also be to influence one of aforementioned arrangements factor, in actual applications, aforementioned geometric relationship has determined fatefully whether this configuration is suitable.And these geometric relationships are not to be definite value, but the value in the scope, so aforementioned arrangements concerns that sufficient to guarantee projector of the present invention 2 functions are normal.Certainly, above-mentioned configuration relation only is an example, and the relevant configuration of projector 2 of the present invention is not as limit.
A diode illuminating device in these diode illuminating devices 214 of projector 2 of the present invention can comprise at least one LED or at least one laser diode.Yet according to this first preferred embodiment, each diode illuminating device 214 of this projector 2 comprises a red-light LED, a green light LED and a blue-ray LED, or comprises the LED of aforementioned LED and other color.And this curved surface light source device 21 comprises a control circuit 24, and is luminous in order to the LED that cooperates these image modulating device 22 these diode illuminating devices 214 of control.By this, this curved surface light source device 21 can be luminous to produce this bundle light by this control circuit 24 these LED of control.That is to say that these LED of these control circuit 24 may command are luminous with red-emitting, green glow, blue light or its mixed light.This curved surface light source device 21 can directly produce monochromatic light and without colour wheel, and therefore this bundle light can not reduce brightness because of filter effect, and this bundle light can be controlled by control circuit 24, and these LED are luminous to have higher color range to show.By this, projector 2 of the present invention can provide more traditional projector higher color range.And this image modulating device 22 of the direct directive of this bundle light that this curved surface light source device 21 produces and need not devices such as extra Multiplexing apparatus and subsidiary lens, face mirror is significantly to dwindle the volume of this projector 2.
According to this first preferred embodiment, this image modulating device 22 is a digital micro-mirror device.This image modulating device 22 also promptly optionally reflects this bundle light to this projecting lens 23 in order to optionally to modulate this bundle light.At last, this projecting lens 23 will be through this bundle ray cast imaging to a screen S 2 of these image modulating device 22 modulation.
What deserves to be mentioned is that according to this first preferred embodiment, this curved surface light source device 21 provides an area source, it can be made of these LED, therefore can provide the brightness that traditional projector uses a few pointolite to provide is provided.And providing under the same brightness condition, this curved surface light source device 21 also can be avoided using high-power pointolite and produce the problem in the heat radiation and can prolong light source life.In addition, the homogeneity of this area source can be reached by the density that is provided with of controlling these LED.
See also Fig. 3, Fig. 3 illustrate projector 2 according to one second preferred embodiment ' synoptic diagram.Compared to this first preferred embodiment, this projector 2 ' image modulating device 22 ' be a liquid crystal indicator.Therefore, to refract to this projecting lens 23, projection imaging is to this screen S 2 again through this liquid crystal indicator 22 ' modulation for this bundle light that this curved surface light source device 21 produces.What deserves to be mentioned is, according to this second preferred embodiment, this projector 2 ' this bundle of producing of curved surface light source device 21 in the light that gathers also roughly converge on the focus of this projecting lens 23, this is also decided by the geometric configuration of 23 of the radius of the curved surface 212 of this curved surface light source device 21 and this curved surface light source device 21, image modulating device 22 and projecting lens.Therefore aforementioned relationship description about these devices also is suitable for this.Be noted that, because this projector 2 ' image modulating device 22 ' be to be used for controlling the liquid crystal lattice to reflect this bundle light, therefore this curved surface light source device 21, image modulating device 22 ' and the geometric position of projecting lens 23 be different from described in this first preferred embodiment, also promptly, projector 2 of the present invention ' curved surface light source device 21 and projecting lens 23 with respect to not homonymy of this image modulating device 22 ' be positioned at.And, this configuration relation also need look the product design situation and consider this image modulating device 22 ' liquid crystal characteristic.As for this projector 2 ' the explanation of other assembly identical with the explanation of this projector 2 of this first preferred embodiment, do not repeat them here.
In addition, in actual design, the controllable assembly of this direction can directly be integrated a plurality of pointolites, is arranged on together on this curved surface light source device 21 again.For example, a plurality of LED are fixed on the circuit board, this circuit board is provided with piezoelectric to control position or the angle of this corresponding LED with respect to this circuit board accordingly in the position that these LED are provided with, and this circuit board is fixed on this curved surface light source device 21 more at last.By this, but these curved surface light source device 21 automated productions, and can improve LED and density is set to promote brightness.
In sum, directly utilize a curved surface light source to provide enough according to projector of the present invention and uniform surface light source to omit the lens of Multiplexing apparatus and corresponding configuration, the significantly volume of reduced projection machine.Further, projector of the present invention can utilize a plurality of LED to form curved surface light sources, removes the homogeneity that can control emission light by configuration density, also can provide higher color range to omit the use of colour wheel, the further volume of reduced projection machine.
By the above detailed description of preferred embodiments, hope can be known description feature of the present invention and spirit more, and is not to come category of the present invention is limited with the preferred embodiment of above-mentioned disclosure.On the contrary, its objective is that hope can and be equal to replacement with various changes and be encompassed in the invention which is intended to be protected.Therefore, the claim that the present invention applied for should be done the broadest explanation according to the above description, to cause it to contain all possible change and to be equal to replacement.
The primary clustering symbol description
1: projector 11: light source
12: Multiplexing apparatus 13: collector lens
14: lens 15,16: the face mirror
17: image modulating device 18: projecting lens
S1: screen 2,2 ': projector
21: curved surface light source device 22,22 ': the image modulating device
23: projecting lens 24: control circuit
212: curved surface 214: diode illuminating device
S2: screen
Claims (8)
1. projector comprises:
The curved surface light source device comprises curved surface, and distributes and to be arranged at a plurality of light sources on the described curved surface, in order to produce Ray Of Light;
The image modulating device is in order to optionally to modulate this bundle light; And projecting lens, in order to will be through this bundle ray cast imaging of described image modulating device modulation.
2. projector according to claim 1, wherein this bundle light roughly converges on the focus of described projecting lens.
3. projector according to claim 1, wherein said a plurality of light sources are diode illuminating device.
4. projector according to claim 3, a diode illuminating device in the wherein said diode illuminating device comprises at least one light emitting diode or at least one laser diode.
5. projector according to claim 3, wherein each diode illuminating device comprises a red-light LED, a green light LED and a blue-ray LED.
6. projector according to claim 5, wherein said curved surface light source device comprises a control circuit, and is luminous in order to cooperate described image modulating device to control the described red-light LED of described diode illuminating device, described green light LED and described blue-ray LED.
7. projector according to claim 1, wherein said image modulating device is a digital micro-mirror device.
8. projector according to claim 1, wherein said image modulating device is a liquid crystal indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100873690A CN101266396A (en) | 2007-03-14 | 2007-03-14 | Projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100873690A CN101266396A (en) | 2007-03-14 | 2007-03-14 | Projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101266396A true CN101266396A (en) | 2008-09-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100873690A Pending CN101266396A (en) | 2007-03-14 | 2007-03-14 | Projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101266396A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116224703A (en) * | 2023-05-10 | 2023-06-06 | 歌尔光学科技有限公司 | Projection optical engine structure, projection device and wearable equipment |
-
2007
- 2007-03-14 CN CNA2007100873690A patent/CN101266396A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116224703A (en) * | 2023-05-10 | 2023-06-06 | 歌尔光学科技有限公司 | Projection optical engine structure, projection device and wearable equipment |
| CN116224703B (en) * | 2023-05-10 | 2023-09-05 | 歌尔光学科技有限公司 | Projection optical engine structure, projection device and wearable equipment |
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Open date: 20080917 |