CN201110936Y - Multiple lamp type projection light source - Google Patents
Multiple lamp type projection light source Download PDFInfo
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- CN201110936Y CN201110936Y CNU200720170999XU CN200720170999U CN201110936Y CN 201110936 Y CN201110936 Y CN 201110936Y CN U200720170999X U CNU200720170999X U CN U200720170999XU CN 200720170999 U CN200720170999 U CN 200720170999U CN 201110936 Y CN201110936 Y CN 201110936Y
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- light source
- projection light
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- catoptron
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- 238000009738 saturating Methods 0.000 claims description 53
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 22
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005267 amalgamation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
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Abstract
The utility model discloses a multi-lamp projection light source. The technical problem to be solved is that the light efflux of the projection light source is largely increased when the optical extent of the common single projection light source is not changed. For solving the technical problem, the utility model adopts the following technical proposal that the multi-lamp projection light source comprises at least two independent projection light sources providing collimated light, an X-shaped transmission reflector is arranged between the two projection light sources which are arranged at the positions of the mirror images of the X-shaped transmission reflector. Compared with the prior art, the multi-lamp projection light source has simple structure and reliable operation property and can realize that the two projection light sources transmitting independent collimated light are output with the same clear apertures as that of the original independent light source under the condition that the optical extent of the light source is not increased, thus the light efflux of the light source is greatly increased.
Description
Technical field
The utility model relates to the light-source system of a kind of projector or rear-projection TV, the projection light source system of especially a kind of projector or rear-projection TV.
Background technology
As everyone knows, projecting illumination system for projector or rear-projection TV, used projection light source (projection lamp), the light output flow size that it can provide depends primarily on the driving power of lamp, and the serviceable life of lamp is also relevant with the driving power of lamp, wanting to obtain big light output flow, will be cost with the serviceable life of sacrificing its lamp, promptly have the contradiction that is difficult to overcome on the long-life at high brightness and the light source of pursuing optical projection system.
The design of employing multi-lamp type projection light source, as if can more efficiently solve above-mentioned contradiction, but, according to design proposal in the past, when utilizing many lamp designs to make the light output flow of light source obtain to be multiplied, but make for projection light source a vital parameter---optical extend (Etendue value) deteriorates significantly, the deterioration of this parameter directly causes the corresponding decline of imaging efficient of projection optics imaging system, thereby make and offset to a great extent by the effort of the final brightness of image of this design proposal increase optical projection system, therefore, adopt existing many lamps of projection design proposal, be difficult to get a desired effect.
Summary of the invention
The purpose of this utility model is to provide a kind of multi-lamp type projection light source, and the technical matters that solve is under the condition that does not change general single-throw shadow lamp source optical extend, significantly increases the light output flow of projection light source.
For solving the problems of the technologies described above, the utility model is by the following technical solutions: a kind of multi-lamp type projection light source, comprise at least two projection light sources that collimated light independently is provided, be provided with the saturating catoptron of X type between the described projection light source, described projection light source is arranged at the position of the mutual mirror image of the saturating catoptron of X type.
The eyeglass of the saturating catoptron of X type described in the utility model is coated with at least the reflectance coating that visible light is had a good reflection characteristic at interval by the correspondence position on transparent substrate two sides and constitutes.
The eyeglass of the saturating catoptron of X type described in the utility model is spaced and is fixed on the mirror mount by the two-sided small reflector of strip and constitutes.
The eyeglass of the saturating catoptron of X type described in the utility model is its double-sided reflecting eyeglass of perforate or groove on the whole.
The position of the saturating mirrored side of X type described in the utility model and two projection light source quadratures is provided with a catoptron.
The saturating catoptron of X type described in the utility model is replaced by a saturating reflecting prism of X type, and the saturating reflecting prism of described X type is fitted by four little right-angle prisms and formed, and the right angle face plating of each little right-angle prism is with the half-transmitting and half-reflecting rete.
Prism facets with two arbitrary source quadratures in the saturating reflecting prism of X type described in the utility model is coated with the reflectance coating that at least visible light is had the good reflection characteristic, constitutes one and will partly reveal the reflecting surface of light reflected back light source.
The installation direction of two projection light sources described in the utility model replaces with mutually orthogonal, the installation direction of the saturating catoptron of described X type and one of them projection light source quadrature.
The saturating catoptron of X type described in the utility model removes the saturating catoptron of a direction, is simplified to the saturating catoptron of "/" type.
The double mirror that the saturating catoptron of "/" described in the utility model type reduces by half for a slice width.
The position of the saturating mirrored side of X type described in the utility model and two projection light source quadratures also is provided with a projection light source, constitutes three lamp type projection light sources.
The light delivery outlet outside of projection light source described in the utility model is provided with a convergent lens.
The utility model compared with prior art, the saturating catoptron of X type is set between light source, simple in structure, reliable operation, can be under the condition that does not increase the light source optical extend, realize two projection light sources of sending independent collimated light with the identical clear aperture output of original arbitrary source, thereby increase the light source light output flow significantly.
Description of drawings
Fig. 1 a is the structural representation of the common collimated light output type of the utility model background technology projection light source
Fig. 1 b is the structural representation of the common converging light output type of the utility model background technology projection light source
Fig. 2 a is the structural representation of one of existing double lamp light source of the utility model background technology
Fig. 2 b is two a structural representation of the existing double lamp light source of the utility model background technology
Fig. 3 a is the structural representation of the utility model first embodiment
Fig. 3 b is the structural representation of one of saturating catoptron of the utility model first embodiment X type
Fig. 3 c is two a structural representation of the saturating catoptron of the utility model first embodiment X type
Fig. 4 is the structural representation of the utility model second embodiment
Fig. 5 is the structural representation of the utility model the 3rd embodiment
Fig. 6 is the structural representation of the utility model the 4th embodiment
Fig. 7 is the structural representation of the utility model the 5th embodiment
Fig. 8 is the structural representation of the utility model the 6th embodiment
Fig. 9 is the structural representation of the utility model the 7th embodiment
Figure 10 is the structural representation of the utility model the 8th embodiment
Figure 11 is the structural representation of the utility model the 9th embodiment
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.Shown in Fig. 3 a, the utility model multi-lamp type projection light source comprises at least two projection light sources 1 that collimated light independently is provided, and is provided with the saturating catoptron 2 of X type between the described projection light source 1, and described projection light source is arranged at the position of the mutual mirror image of the saturating catoptron of X type.Principle of the present utility model be to utilize two independently collimated light output type projection light source 1 mutually reverse or vertical collimated light of two bundles is provided respectively, the light components that by a saturating catoptron 2 of X type two collimated lights that light source sent is divided into orthogonal both direction again, wherein the light components of at least one direction directly or through the saturating catoptron 2 of described X type reflects the back once more to turn back to the reflector of described arbitrary source towards the opposite direction of arbitrary source light beam exit direction, the light that returns is after reflective cup reflects, passing wick penetrates from other direction, after reflecting once more, reflector penetrates once more from arbitrary source as collimated light, by carrying out repeatedly of this process, realize that two projection light sources of sending independent collimated light are with the identical clear aperture output of original arbitrary source, thereby many collimated light beams of realizing not increasing under the optical extend condition are synthetic, promptly under the condition that does not increase the light source optical extend, increase the light source light output flow significantly.
Shown in Fig. 1 a, 1b, traditional projection light source, require different according to its light source with the optical interface of projection imaging system, be divided into two kinds of different optical output modes, a kind of is so-called " collimated light " output type, and another kind is the converging light output type, accordingly, the former adopts " parabola " reflector 101, and (Fig. 1 a), wick 100 emits beam through " parabola " reflector 101 reflection backs by optical filter 104 ejaculation parallel beams; The latter adopts " elliptical area " reflector 102 (Fig. 1 b), and wick 100 emits beam and penetrate convergent beam by optical filter 104 after 102 reflections of " elliptical area " reflector.
For aforesaid " optical extend ", its computing formula is E=π Asin
2θ, wherein A is a light beam of light source output sectional area, θ is output light maximum scattering angle.
Existing a kind of pair of lamp type projection light source (Chinese invention patent application CN1300953A), shown in Fig. 2 a, the method that adopts be with two independently projection light source (projection lamp) the 1 two bundle collimated light amalgamations of being sent become a branch of collimated light C output, wherein, a branch of collimated light is through catoptron 5 refractions, therefore, the beam cross section of its synthetic output amasss and should be the collimated light beam sectional area sum (reflective surface area of A=A1+A2) that original two arbitrary sources are exported at least, computing formula according to above optical extend, its designed light source optical extend also is the twice of common single lamp projection light source, the multiplication of light source optical extend will cause the light conversion efficiency of projection imaging system to reduce greatly, as previously mentioned, be difficult to reach design purpose.
The two lamp type projection light sources (Chinese invention patent application CN1800966A) of existing another kind, shown in Fig. 2 b, the method that is adopted be with two independently the two beam convergence light that sent of projection light source (projection lamp) 1 be merged into as a branch of converging light D output after by two reflectings surface 6 reflections of tilting by certain angle each other, but, by among the figure as can be known, its maximum scattering angle of assembling of the synthetic converging light that designed light source is exported is assembled scattering angle much larger than the maximum of original two arbitrary sources, computing formula according to above optical extend, the optical extend of designed as can be known light source will be much higher than the optical extend of original two arbitrary sources, as previously mentioned, also be difficult to reach the desired design purpose.
At the problems referred to above, the utility model has creatively adopted the saturating mirror system of X type, can significantly increase the light output flow of projection light source under the condition that does not change general single-throw shadow lamp source optical extend, and its specific embodiment is as described below:
Embodiment 1:
Shown in Fig. 3 a, the mutual mirror position that two of present embodiment independently provide the projection light source (projection lamp) 1 of collimated light to be arranged at the saturating catoptron 2 of X type is through the vertical direction output of synthetic collimated light beam C from two arbitrary source lines of centres.
Constitute a method of used catoptron in the present embodiment, shown in Fig. 3 b, correspondence position on the two sides of transparent (glass) substrate 21 plates at interval at least visible light being had the reflectance coating 22 of good reflection characteristic, thereby forms the saturating reflecting surface that can produce reflection and transmission two specific characters in the mode of space interval to light.
Constitute another method of used catoptron in the present embodiment, shown in Fig. 3 c, the two-sided small reflector 31 of the strip of appropriate size is arranged with suitable intervals, and fixed it, also can form saturating reflecting surface with same characteristic with the suitable mirror mount 32 of a structure.
Constituting another method of used catoptron in the present embodiment, is the double-sided reflecting eyeglass (not shown) that adopts perforate on the whole or groove.
Embodiment 2:
As shown in Figure 4, present embodiment is that the position of X type saturating catoptron 2 sides and two arbitrary source quadratures is provided with a catoptron 5 in a last embodiment, with the issuable leakage light of part reflected back light source, improves optical efficiency.
Embodiment 3:
As shown in Figure 5, present embodiment is that the saturating reflecting prism 3 of X type of saturating catoptron 2 usefulness of X type is replaced, and the saturating reflecting prism 3 of X type is fitted by four little right-angle prisms and formed, and the right angle face plating of each little right-angle prism is with the half-transmitting and half-reflecting rete.
Embodiment 4:
As shown in Figure 6, the difference of a present embodiment and a last embodiment, be and plate at least visible light is had the reflectance coating of good reflection characteristic with the prism facets of two arbitrary source quadratures in the saturating reflecting prism 3 of X type, constitute the reflecting surface 7 that partly to reveal light reflected back light source.
Embodiment 5:
Present embodiment is the installation direction of two arbitrary sources mutually orthogonal, correspondingly, in the present embodiment the installation direction of the catoptron that is adopted also with one of them arbitrary source quadrature (Fig. 7).
Embodiment 6:
The difference of a present embodiment and a last embodiment, the saturating mirror system that is to be adopted is simplified to the saturating catoptron of "/" type (Fig. 8) for the saturating catoptron of X type being removed the saturating catoptron of a direction.
Embodiment 7:
The difference of a present embodiment and a last embodiment is the saturating catoptron of "/" type further is reduced to the double mirror 4 (Fig. 9) that a slice width reduces by half.
Embodiment 8:
As shown in figure 10, present embodiment is to cancel the catoptron that is used to prevent the light leakage in the foregoing description, replaces an independently projection light source, thereby constitutes three lamp type projection light sources, further increases the light output flow.
Embodiment 9:
As shown in figure 11, present embodiment is provided with a convergent lens 8 in the light delivery outlet outside of projection light source, thereby the collimated light that the utility model projection light source is exported is for conversion into converging light D output, to satisfy the optical interface requirement of part projection imaging system.
Claims (12)
1. a multi-lamp type projection light source comprises at least two projection light sources that collimated light independently is provided, and it is characterized in that: be provided with the saturating catoptron of X type between the described projection light source, described projection light source is arranged at the position of the mutual mirror image of the saturating catoptron of X type.
2. multi-lamp type projection light source according to claim 1 is characterized in that: the eyeglass of the saturating catoptron of described X type is coated with at least the reflectance coating that visible light is had a good reflection characteristic at interval by the relative position on transparent substrate two sides and constitutes.
3. multi-lamp type projection light source according to claim 1 is characterized in that: the eyeglass of the saturating catoptron of described X type is spaced and is fixed on the mirror mount by the two-sided small reflector of strip and constitutes.
4. multi-lamp type projection light source according to claim 1 is characterized in that: the eyeglass of the saturating catoptron of described X type is its double-sided reflecting eyeglass of perforate or groove on the whole.
5. multi-lamp type projection light source according to claim 1 is characterized in that: the position of the saturating mirrored side of described X type and two projection light source quadratures is provided with a catoptron.
6. multi-lamp type projection light source according to claim 1, it is characterized in that: the saturating catoptron of described X type is replaced by a saturating reflecting prism of X type, the saturating reflecting prism of described X type is fitted by four little right-angle prisms and is formed, and the right angle face plating of each little right-angle prism is with the half-transmitting and half-reflecting rete.
7, multi-lamp type projection light source according to claim 6, it is characterized in that: the prism facets with two arbitrary source quadratures in the saturating reflecting prism of described X type is coated with the reflectance coating that at least visible light is had the good reflection characteristic, constitutes one and will partly reveal the reflecting surface of light reflected back light source.
8, multi-lamp type projection light source according to claim 1 is characterized in that: the installation direction of described two projection light sources replaces with mutually orthogonal, the installation direction of the saturating catoptron of described X type and one of them projection light source quadrature.
9, multi-lamp type projection light source according to claim 8 is characterized in that: the saturating catoptron of described X type removes the saturating catoptron of a direction, is simplified to the saturating catoptron of "/" type.
10, multi-lamp type projection light source according to claim 9 is characterized in that: the double mirror that the saturating catoptron of described "/" type reduces by half for a slice width.
11, multi-lamp type projection light source according to claim 1 is characterized in that: the position of the saturating mirrored side of described X type and two projection light source quadratures also is provided with a projection light source, constitutes three lamp type projection light sources.
12, multi-lamp type projection light source according to claim 1 is characterized in that: the light delivery outlet outside of described projection light source is provided with a convergent lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720170999XU CN201110936Y (en) | 2007-11-26 | 2007-11-26 | Multiple lamp type projection light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720170999XU CN201110936Y (en) | 2007-11-26 | 2007-11-26 | Multiple lamp type projection light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110936Y true CN201110936Y (en) | 2008-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720170999XU Expired - Fee Related CN201110936Y (en) | 2007-11-26 | 2007-11-26 | Multiple lamp type projection light source |
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| Country | Link |
|---|---|
| CN (1) | CN201110936Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107463057A (en) * | 2016-06-02 | 2017-12-12 | 中强光电股份有限公司 | Optical projection system and illuminator |
-
2007
- 2007-11-26 CN CNU200720170999XU patent/CN201110936Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107463057A (en) * | 2016-06-02 | 2017-12-12 | 中强光电股份有限公司 | Optical projection system and illuminator |
| TWI610121B (en) * | 2016-06-02 | 2018-01-01 | 中強光電股份有限公司 | Projection system and illumination system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20111126 |