CN102854724A - Adjustment method and device of projection light source - Google Patents
Adjustment method and device of projection light source Download PDFInfo
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- CN102854724A CN102854724A CN2012103129335A CN201210312933A CN102854724A CN 102854724 A CN102854724 A CN 102854724A CN 2012103129335 A CN2012103129335 A CN 2012103129335A CN 201210312933 A CN201210312933 A CN 201210312933A CN 102854724 A CN102854724 A CN 102854724A
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Abstract
The embodiment of the invention discloses an adjustment method and device of a projection light source of a projection system. The projection system comprises a projection light source, a light modulation unit and a projection lens, wherein the emergent light of the projection light source is emitted into the light modulation unit and modulated and emitted out to the projection lens. The adjustment method of the projection light source comprises the following steps of: lightening the projection light source, measuring the brightness distribution of the projection area of the projection lens, and recording the brightness ai at different positions of the projection area, wherein i=1, 2,..., n; and setting a second projection light source to replace the projection light source, controlling the energy of the emergent light spots thereof so that the brightness at different positions on the light spots corresponding to different positions of the projection area is b, and ensuring ai*bi=pi*qi, wherein pi is the expected brightness at the position of the projection area, and qi is the brightness at the position corresponding to the light spot of the emergent light of the projection light source. The adjustment method of a projection light source disclosed by the embodiment of the invention can obtain a projection area with expected brightness distribution.
Description
Technical field
The present invention relates to illumination and display technique field, particularly relate to a kind of projection light source method of adjustment and adjusting gear of optical projection system.
Background technology
Projection goes out the uniform image of brightness on the screen in order to be implemented in, and existing optical projection system often arranges dodging device in light path comes the emergent light of projection light source is spared light, is incident to projection lens after the light-modulating cells such as recycling DMD are modulated it.Dodging device commonly used comprises optical tunnel, fly's-eye lens etc.Fig. 1 is the structural representation of a kind of optical projection system in the prior art, as shown in Figure 1, optical projection system 100 comprises projection light source 110, lens 120, optical tunnel 130, lens 140, total internal reflection prism 150, light-modulating cell 160, projection lens 170, wherein projection light source 110 comprises excitation source 111 and fluorescent powder color wheel 112, and the excitation light source excites fluorescent powder color wheel produces Stimulated Light and outgoing.Optical tunnel 130 receives the emergent light of projection light source 110, it is carried out homogenising be incident to light-modulating cell 160 by lens 140 and total internal reflection prism 150.Light-modulating cell 160 is DMD, and it modulates also outgoing to projection lens 170 to incident light.But the halation phenomenon can appear in the projected image that projection lens 170 projects, i.e. projected image intermediate luminance high rim brightness is low and present the phenomenon of brightness irregularities.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of method of adjustment and adjusting gear of projection light source, with the view field of the Luminance Distribution that obtains expectation.
A kind of method of adjustment of projection light source of optical projection system, it is characterized in that, optical projection system comprises projection light source, light-modulating cell, projection lens, the emergent light of projection light source incides light-modulating cell, and outgoing finally shines view field through the projection lens projection to projection lens after this light-modulating cell modulation; The method of adjustment of projection light source comprises:
Obtain the first brightness a in some precalculated positions of the emergent light hot spot of projection light source
i
Obtain the second brightness b of some precalculated positions correspondence position in view field of emergent light hot spot
i
Obtain the expectation brightness p of some precalculated positions correspondence position in view field of emergent light hot spot
i
By the three brightness c of following formula acquisition in some precalculated positions of the emergent light hot spot of the needed projection light source of view field's acquisition expectation brightness
i:
Adjust projection light source, so that the brightness in some precalculated positions of the emergent light hot spot of this projection light source is the 3rd brightness c
i
The present invention also provides a kind of adjusting gear, comprises
Compared with prior art, the present invention includes following beneficial effect:
Among the present invention, the first brightness a in some precalculated positions of the emergent light hot spot by obtaining projection light source
i, obtain the second brightness b of some precalculated positions correspondence position in view field of emergent light hot spot
i, obtain the expectation brightness p of some precalculated positions correspondence position in view field of emergent light hot spot
i, finally pass through formula
Acquisition is at the 3rd brightness c in some precalculated positions of the emergent light hot spot of the needed projection light source of view field's acquisition expectation brightness
i, so that the Luminance Distribution that view field can obtain to expect during the projection light source after adjusting.
Description of drawings
Fig. 1 is the structural representation of a kind of optical projection system in the prior art;
Fig. 2 a is the structural representation of an embodiment of optical projection system of the present invention;
Fig. 2 b is the method for adjustment schematic flow sheet of the projection light source of optical projection system shown in Fig. 2 a;
Fig. 2 c is the measuring position synoptic diagram of projection light source emergent light light hot spot;
Fig. 2 d is the brightness measurement position view of the view field that projection light source emergent light light hot spot is corresponding among Fig. 2 c;
Fig. 3 a is the structural representation of another embodiment of optical projection system of the present invention;
Fig. 3 b is the method for adjustment schematic flow sheet of the projection light source of optical projection system shown in Fig. 3 a;
Fig. 3 c is the structural representation of the projection light source after the adjustment of optical projection system shown in Fig. 3 a;
Fig. 3 d is another structural representation of the projection light source after the adjustment of optical projection system shown in Fig. 3 a;
Fig. 4 is the synoptic diagram of an embodiment of projection light source adjusting gear of the present invention.
Embodiment
Below in conjunction with drawings and embodiments the embodiment of the invention is elaborated.
Embodiment one
Fig. 2 a is the structural representation of an embodiment of optical projection system of the present invention, and shown in Fig. 2 a, optical projection system comprises projection light source 210, lens 220, total internal reflection prism 240, light-modulating cell 230, projection lens 250.Projection light source 210 is specially led array, the emergent light of projection light source 210 is adjusted through lens 220 and is entered total internal reflection prism 240, then inciding light-modulating cell 230 modulates, to projection lens 250, finally be projected to view field on the screen through projection lens 250 finally by total reflection lens 240 outgoing.
In addition, the emergent light of 220 pairs of projection light sources 210 of lens plays the effect of adjusting angle, when or projection light source 210 emergent lights less demanding to light utilization efficiency do not need to adjust, does not need to arrange lens 220.Total internal reflection prism 240 is used for the incident light of light-modulating cell 230 is separated with the emergent light light path, and its advantage is that with respect to catoptron can not produce a plurality of pictures affects drop shadow effect.Can certainly directly receive the incident light of projection light source 210 and reflex to projection lens 250 and omission total internal reflection prism 240 with light-modulating cell 230.
In the course of work of optical projection system, projection light source 210 emergent lights are incident to that light-modulating cell 230 surface forms hot spots and by its modulation, projection light source 210 emergent light hot spots are corresponding one by one with each position of hot spot on the light-modulating cell 230, when the corrective action of each position on 230 pairs of hot spots of light-modulating cell was identical, the modulation of light-modulating cell 230 can't change the energy distribution of hot spot.The emergent light of light-modulating cell 230 can project the view field of projection screen behind projection lens 250, position in the view field and the hot spot that incides projection lens 250 are that the position on the hot spot of light-modulating cell 230 outgoing is one to one, so the position in the view field also is that position on the hot spot with projection light source 210 emergent lights is one to one.Since the size restrictions of projection lens 250, the light transmission transmitance N of the each several part of projection lens 250
iIncomplete same: the light transmission transmitance of zone line will be higher than the light transmission transmitance of fringe region, causes brightness that uniform luminance light incides projecting lens 250 rear view fields bright and the edge is dark in the middle of being.But the arbitrary fixed position for projection lens 250, its light transmission transmitance is fixed, the brightness of incident ray of arbitrary fixed position that is projection lens 250 is larger, and the brightness of a certain position that projects view field behind its transmission projection camera lens 250 is larger.Similarly, other optical element between projection light source and projection lens, lens for example, optical tunnels etc. all can impact the propagation of light beam, so that it is different to incide the hot spot each several part transmission effects of this optical element surface.Here, we can regard all optical elements that comprise projection lens 250 as an optical element, the light transmission transmitance of each position of this optical element is different, but each position light transmission rate is fixed value, does not change with the energy distribution to the hot spot of projection light source outgoing.
Therefore on the other hand, the adjustment of light-modulating cell 230 does not change the energy distribution of launching spot, for a certain fixed position B of view field
i, its brightness b
iBe decided by the position A on the hot spot of emergent light of projection light source corresponding to this position 210
iBrightness a
iAnd the overall light of all optical elements between projection lens 250 and the projection light source 210 transmission transmitance N
i, and satisfy b
i=a
i* N
iTherefore, the view field of the Luminance Distribution that obtain expecting, the brightness adjustment of the position on the emergent light hot spot of the corresponding projection light source 210 in position that only need to view field's brightness is lower gets final product.
Fig. 2 b is the method for adjustment schematic flow sheet of the projection light source of optical projection system shown in Fig. 2 a, and shown in Fig. 2 b, present embodiment comprises:
Step S21 obtains the first brightness a in some precalculated positions of the emergent light hot spot of projection light source
i
Here the first brightness a in some precalculated positions of the emergent light hot spot of projection light source
iAcquisition methods can be: utilize the device such as camera that the emergent light hot spot of projection light source is imaged onto on the sensitive film, obtain the first brightness a in some precalculated positions from sensitive film
iCertainly, the acquisition methods of the first brightness of some positions can also be alternate manner, for example utilizes diaphragm with holes to cover other position, and a certain precalculated position of emergent light hot spot is aimed in the hole, utilizes sensitive probe to measure the brightness at this place, hole.
Choosing some precalculated positions can carry out according to concrete needs, and the data that the position of choosing obtains more more can represent the Luminance Distribution of projection light source, and is evenly distributed on the position in the view field, can embody preferably the Luminance Distribution relation of projection.In embodiment of the present invention, the quantity of view field measuring position and distributed areas can be selected as required, not necessarily are confined to quantity and distributed areas that present embodiment is given an example.
Step S22 obtains the second brightness b of some precalculated positions correspondence position in view field of the emergent light hot spot of projection light source
i
The acquisition methods here can be to utilize the device measurings such as illuminometer.The emergent light hot spot of projection light source projects to after the view field, the shape of hot spot does not change, so the correspondence position of some precalculated positions in view field of the emergent light hot spot of projection light source, only need the ratio according to view field and this emergent light hot spot, get final product with this ratio the distance at the spacing between some precalculated positions of this emergent light hot spot and this some precalculated positions and edge being amplified in the view field.Fig. 2 c is the synoptic diagram of projection light source emergent light hot spot, Fig. 2 d is the brightness measurement position view of the view field that projection light source emergent light light hot spot is corresponding among Fig. 2 c, shown in Fig. 2 c, hot spot is the rectangle that length and width are respectively N, M, shown in Fig. 2 d, view field is the rectangle that length and width are respectively 9N, 9M, therefore works as the position A of hot spot
1With adjacent A
2, A
4Between spacing be respectively L2, L1, and with Edge Distance all be 0 o'clock, corresponding B1 position and adjacent B
2, B
4Between spacing to amplify 9 times for 9L1,9L2, and to enlarge 9 times with the distance at edge still be 0.
Step S23 obtains the expectation brightness p of some precalculated positions correspondence position in view field of the emergent light hot spot of projection light source
i
Expectation brightness can be set expectation brightness in advance according to different demands in memory storage, so obtaining of the expectation brightness of this step can directly be obtained from memory storage; Certainly, also can obtain by input media.
Need to prove that herein step S21-S23 is without inevitable time order and function order.
Step S24 is by the three brightness c of following formula acquisition in some precalculated positions of the emergent light hot spot of the needed projection light source of view field's acquisition expectation brightness
i:
The 3rd brightness in the some precalculated positions in this step can calculate according to formula by calculation element.
Step S25 adjusts projection light source, so that the brightness in some precalculated positions of the emergent light hot spot of this projection light source is the 3rd brightness c
i
The 3rd brightness c here
iAdjustment, be to adjust according to the 3rd brightness ratio of some positions, might not adjust to the absolute value that calculates gained.In fact, no matter be some precalculated positions of view field or some precalculated positions of projection light source emergent light hot spot, the brightness value of measurement is all relevant with the size of measurement mechanism and measurement area.Therefore, the single value of measurement data is too large meaning not, and what need in the reality is a data sequence, and the ratio between the different pieces of information is just meaningful.
For convenience of calculation, preferably, above-mentioned computation process is to the position B of view field
iBrightness b
i, with the position B of view field
iDiverse location A in the corresponding hot spot
iBrightness a
i, the B of view field
iThe expectation brightness p of position
i, carry out calculating after the normalization.For example, with the expectation brightness p of the view field in the present embodiment
iBe made as 1, other parameter is converted accordingly, can simplify calculating.
The adjustment mode of projection light source 210 can be to select a new light source to displace original projection light source.For example design a new light source, the brightness that makes some precalculated positions of this light source emergent light hot spot is the 3rd brightness c
i, and this light source is substituted into the position of primary source.
Situation about being formed by a plurality of light-emitting components for projection light source, the adjustment mode of projection light source 210 also can be that the power of the corresponding light-emitting component in some precalculated positions of projection light source emergent light hot spot is adjusted, so that the brightness in some precalculated positions of projection light source emergent light hot spot is the 3rd brightness c
i
The adjustment mode of projection light source 210 can also be to increase the optical element that can change projection light source 210 emergent light hot spot Luminance Distribution in projection light source 210, this optical element and projection light source 210 form new projection light source, and this situation will further specify in embodiment two.
The below describes for evenly being distributed as example with the Luminance Distribution of view field's expectation, at this moment the diverse location B of view field
iExpectation brightness p
iBe constant p
0
Shown in Fig. 2 d, in the present embodiment, select 9 positions in view field, be respectively B
1, B
2, B
3... B
9, these 9 positions evenly distribute in view field, can embody preferably the Luminance Distribution relation of projection.Can obtain the expectation brightness p of precalculated position correspondence position in view field of emergent light hot spot according to the Luminance Distribution of expectation
i
Particularly, with Fig. 2 d B of view field
1The position is example, utilizes illuminometer to measure the B of projection light source 210 view fields
1The brightness of position is b
1Utilize formation method, measure B
1The A of the emergent light hot spot of the projection light source 210 that the position is corresponding
1The brightness of position measurement is a
1, the B when view field
1The expectation brightness p of position
0, the A of corresponding projection light source 210 emergent light hot spots
1The brightness of position is c
1, and the B of view field
1The A of the emergent light hot spot of position and projection light source 210
1The light transmission transmitance N of the light path system between the position
1Changeless, therefore:
The B of view field wherein
1The brightness of position is b
1, B
1The A of the emergent light hot spot of the projection light source 210 that the position is corresponding
1The brightness of position is a
1All obtain the B of view field by measuring
1The brightness of position reaches expectation value p
0Set as required, so brightness c
1Can obtain by the above-mentioned derivation of equation, so that the B of view field
1The brightness of position reaches expectation value p
0, the A of hot spot
1The brightness c of position
1Satisfy:
Similarly, for other position A of view field
2, A
3... A
9, we can carry out same analysis to it, and its situation also is similar, namely needs only
Get final product, the Luminance Distribution of the hot spot of required projection light source emergent light can calculate according to the brightness of the correspondence position of the hot spot of the desired projection brightness that reaches of view field and projection light source 210 emergent lights, realizes obtaining the equally distributed view field of brightness thereby adjust projection light source 210.The adjustment here is that the brightness of the position on the hot spot of emergent light on the corresponding projection light source 210 in relative projection light source 210 position that view field's brightness is lower is adjusted, and the ratio that the ratio that improves its brightness and raising is higher than the higher position of brightness or reduces its brightness and reduction is lower than the higher position of brightness.
What deserves to be explained is, in the present embodiment, for view field choose have a few, it is identical that its brightness expectation value all is set to, namely view field is that uniform luminance distributes.In other embodiment of the present invention, for view field choose have a few, it is incomplete same that its brightness expectation value can be set to, and can obtain the image of other Luminance Distribution form, is applied to some specific occasions.
The some positions that utilize the emergent light hot spot in the present embodiment are the first brightness A
iProjection light source 210 as reference light source, measured the Luminance Distribution of the view field of projection light source 210 this moment, according to this Luminance Distribution, adjust the energy distribution of the outgoing hot spot of projection light source, obtain the view field of the Luminance Distribution of expectation.
Optical projection system in the present embodiment is adjusted projection light source by said method and has been improved the brightness degree of uniformity of view field, and with respect to optical projection system of the prior art, omit the elements such as optical tunnel and lens, realized compact structure, can use hand-held projector equipment.
In fact, consider various uncertain factors, for example projection optical system is not linear for the response of light-source brightness, one-shot measurement obtains the view field that the Luminance Distribution of hot spot of the emergent light of secondary light source not necessarily can realize desired Luminance Distribution, preferably, above-mentioned computation process can also be repeatedly, and finally obtain the view field of desirable Luminance Distribution.
In the present embodiment, take the Luminance Distribution of the view field of expectation as uniform Luminance Distribution as example, its expectation brightness p
i=p
0, p
0It is a constant.The calculating projected image brightness mode whether satisfied evenly distribution requires can have a variety of, for example utilization measurement zone line A
9Brightness and the ratio of all measured zone average brightness size judge that the ratio size of perhaps measuring brightness maximum region and all measured zone average brightness compares.The determination methods of brightness uniformity is a variety of in addition, and the determination methods of this brightness uniformity and decision threshold can be selected according to concrete needs.
In the present embodiment, projection light source is led array, so step S25 can comprise among Fig. 2 b: adjust the brightness of LED corresponding with some precalculated positions in the led array, so that the brightness of LED that should correspondence is the 3rd brightness c
iClearly, the Luminance Distribution of this led light source emergent light hot spot is adjusted easily, for example gets final product by changing corresponding voltage or the electric current of LED.
Embodiment two
Fig. 3 a is another structural representation of optical projection system of the present invention, and shown in Fig. 3 a, optical projection system comprises projection light source 310a, lens 320, total internal reflection prism 340, light-modulating cell 330, projection lens 350.The emergent light of projection light source 310a is adjusted through lens 320 and is entered total internal reflection prism 340, then incides light-modulating cell 330 and modulates, and carries out projection finally by total reflection lens 340 outgoing to projection lens 350.
Fig. 3 b is the method for adjustment schematic flow sheet of the projection light source of optical projection system shown in Fig. 3 a, shown in Fig. 3 b, compare with the method for adjustment of projection light source shown in Fig. 2 b, the step S31 in this enforcement～S34 is with the step S21 shown in Fig. 2 b～S24 is identical, and difference is:
Step S25 among Fig. 2 b is specially the step S35 among Fig. 3 b in the present embodiment: apparatus for shaping 314 is set, and the brightness adjustment that is used for the precalculated position of the emergent light hot spot of projection light source is described the 3rd brightness c
i, the emergent light after this projection light source adjustment is incident to light-modulating cell.
Particularly, projection light source 310a shown in Fig. 3 a is former projection light source, and shown in Fig. 3 c, projection light source 310b is the light source after adjusting, and projection light source 310b is that the emergent light light path at former projection light source 310a is provided with apparatus for shaping 314.With respect to directly utilizing new light sources to displace projection light source 310a, adjust projection light source 310a by increasing apparatus for shaping 314, easier realization can also take full advantage of the assembly of projection light source 310a, saves cost.
The apparatus for shaping here is specially free-form surface lens, and it can become required Illumination Distribution with the spot shaping of projection light source 310a outgoing.Shaping lens can utilize professional optical design software to carry out designing mould, and by method manufacturings such as injection mouldings.In other embodiment of the present invention, apparatus for shaping 314 can also be the device that DOE (Diffractive optical element, diffraction optical element) etc. has shaping operation.
Particularly, in the present embodiment, projection light source 310a comprises excitation source 311, Wavelength converter 312, dodging device 313.Wavelength converter 312 receives the emergent light of excitation sources 311 and it at least part ofly is converted to the Stimulated Light outgoing, projection light source 310b after the adjustment comprises projection light source 310a and apparatus for shaping 314, and this apparatus for shaping 314 is arranged on the emitting light path of projection light source 310a.Wavelength converter 312 is provided with material for transformation of wave length, and material for transformation of wave length is specially fluorescent powder, but in other embodiment of the present invention, may be the material that quantum dot, fluorescent dye etc. have wavelength conversion capability also, is not limited to fluorescent powder.In addition, in other embodiment of the present invention, the projection light source 310b after projection light source 310a and the adjustment can also be other light source type, such as led light source, LASER Light Source etc.
In other embodiment of the present invention, excitation source 311 and Wavelength converter 312 can replace with other light source, for example led light source.
Also comprise dodging device 313 among the projection light source 310a in the present embodiment, Stimulated Light is the uniform hot spot of outgoing Illumination Distribution behind dodging device 313.Dodging device 313 in the present embodiment is optical tunnel, and this optical tunnel also can replace with other device, such as fly's-eye lens etc., as long as guarantee its emergent light hot spot Illumination Distribution evenly.
By the analysis among the embodiment shown in Fig. 2 a as can be known, after projection light source is adjusted, the B of view field
iThe brightness of position reaches expectation value p
i, corresponding emergent light hot spot A
iThe brightness c of position
iSatisfy:
In the present embodiment, because the Illumination Distribution of the emergent light of projection light source 310a is even, projection light source emergent light hot spot A
iThe brightness a of position
iBe definite value a
0, only with the A of view field
iThe brightness of position reaches expectation value p
iRelevant, this moment is for easier design of hot spot Luminance Distribution of the second projection light source 310b, for example utilizes apparatus for shaping to come in the situation to projection light source 310a shaping the easier design of apparatus for shaping.
Fig. 3 d is another structural representation of projection light source after the adjustment of optical projection system shown in Fig. 3 a, and shown in Fig. 3 d, different from Fig. 3 c is that among the projection light source 310c, optical tunnel 313 is between excitation source 311 and Wavelength converter 312.In existing optical projection system, the hot spot that excitation source is incident on the fluorescent powder color wheel is irregular shape, and optical power density is also inhomogeneous in the hot spot scope.Optical tunnel can make the shape of hot spot become the shape identical with DMD modulation face, the rectangle of 4: 3 or 16: 9 for example, this has farthest reduced the light losing that is incident in the DMD outside so that this hot spot can have good coupling with its modulation face after imaging in the DMD surface; Optical tunnel can make the interior light of hot spot of optical tunnel outlet distribute and become even simultaneously, and this has guaranteed the image homogeneity on projection and the screen.Yet, use the problem of optical tunnel to be, want to guarantee coupling efficiency, be incident in the inevitable entrance less than optical tunnel of size of the hot spot of optical tunnel entrance, this is just so that excitation source is incident in the hot spot of fluorescent powder color wheel must control very littlely, and then so that the power density of hot spot increase.This has caused the decrease in efficiency of fluorescent powder.And when optical tunnel 313 is positioned over excitation source 311 with Wavelength converter 312, this optical tunnel 313 can receive and excite the direct outgoing of hot spot and DMD form fit and uniform hot spot to Wavelength converter, the variation of the shape of the hot spot of outgoing and Luminance Distribution is substantially little after the material for transformation of wave length on the Wavelength converter excites, also can not cause aforementioned optical tunnel to be positioned over the problem that the Wavelength converter subsequent optical path occurs, be a kind of preferred structure therefore.
In the present embodiment, this apparatus for shaping is positioned on the emitting light path of former light-emitting device.In other embodiments, apparatus for shaping also can be on the light path between excitation source 311 and the Wavelength converter 312, because excitation source 311 is with respect to Wavelength converter 312 points of proximity light source more, therefore apparatus for shaping is easier regulates, in addition, in this structure, do not need again the dodging devices such as optical tunnel are being set in follow-up light path.
Embodiment three
Fig. 4 is the synoptic diagram of an embodiment of projection light source adjusting gear of the present invention, and as shown in Figure 4, this adjusting gear comprises the first acquisition module, the second acquisition module, the 3rd acquisition module, the 4th acquisition module.
The first acquisition module is used for obtaining the first brightness a in some precalculated positions of the emergent light hot spot of projection light source
i
The first acquisition module can comprise sensitive probe and data transmission device, and this sensitive probe is measured the first brightness a of the some positions of projection light source emergent light hot spot
iAnd transfer to the 4th acquisition module.The first acquisition module also can be a receiving trap, is used for the data of the sense organ probe transmission of reception peripheral hardware.
The second acquisition module is for the second brightness b of the some precalculated positions correspondence position in view field that obtains the emergent light hot spot
i
Similar with the first acquisition module, the second acquisition module also can comprise illuminometer and respective data transfer device, and this illuminometer is measured the second brightness b of the some positions of view field
iAnd transfer to the 4th acquisition module; The second acquisition module also can be a receiving trap, is used for the data of the illuminometer transmission of reception peripheral hardware.
The 3rd acquisition module is for the expectation brightness p of the some precalculated positions correspondence position in view field that obtains the emergent light hot spot
i
The 3rd acquisition module can comprise input media and respective data transfer module, and input media is used for the Luminance Distribution of input view field some positions expectation and transfers to four module.
The 4th acquisition module is used for by the three brightness c of following formula acquisition in some precalculated positions of the emergent light hot spot of the needed projection light source of view field's acquisition expectation brightness
i, so that be described the 3rd brightness c with the brightness adjustment in some precalculated positions of the emergent light hot spot of projection light source
i:
Wherein i is the integer more than or equal to 1.
The 4th acquisition module can comprise data memory module and computing module, and data memory module can receive from the data of first, second and the 3rd acquisition module and store, and computing module is used for calculating the 3rd brightness c according to these data and above-mentioned formula
i
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
The above only is embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (7)
1. the method for adjustment of the projection light source of an optical projection system, it is characterized in that, described optical projection system comprises projection light source, light-modulating cell, projection lens, the emergent light of described projection light source incides described light-modulating cell, and outgoing finally shines view field through described projection lens projection to described projection lens after this light-modulating cell modulation; The method of adjustment of described projection light source comprises:
Obtain the first brightness a in some precalculated positions of the emergent light hot spot of described projection light source
i
Obtain the second brightness b of some precalculated positions correspondence position in view field of described emergent light hot spot
i
Obtain the expectation brightness p of some precalculated positions correspondence position in view field of described emergent light hot spot
i
By the three brightness c of following formula acquisition in some precalculated positions of the emergent light hot spot of the needed projection light source of view field's described expectation brightness of acquisition
i:
Adjust described projection light source, so that the brightness in some precalculated positions of the emergent light hot spot of this projection light source is described the 3rd brightness c
i
2. method of adjustment according to claim 1 is characterized in that, first Luminance Distribution in some precalculated positions of the hot spot of the emergent light of described projection light source is evenly to distribute.
3. method of adjustment according to claim 1 is characterized in that, described adjustment projection light source is so that the brightness in some precalculated positions of the emergent light hot spot of this projection light source is described the 3rd brightness c
iComprise:
Apparatus for shaping is set, and the brightness adjustment that is used for some precalculated positions of the emergent light hot spot of described projection light source is described the 3rd brightness c
i, the emergent light after this projection light source adjustment is incident to described light-modulating cell.
4. method of adjustment according to claim 3, it is characterized in that, described projection light source comprises excitation source and Wavelength converter, described Wavelength converter receives the exciting light of described excitation source with the generation Stimulated Light, and the mixed light of the unabsorbed exciting light of outgoing and Stimulated Light or this Stimulated Light;
Described apparatus for shaping is on the light path between described excitation source and the Wavelength converter.
5. method of adjustment according to claim 1 is characterized in that, described projection light source comprises led array;
Described adjustment projection light source is so that the brightness in some precalculated positions of the emergent light hot spot of this projection light source is described the 3rd brightness c
iComprise: adjust the brightness of LED corresponding with described some precalculated positions in the described led array, so that the brightness of LED that should correspondence is described the 3rd brightness c
i
6. the adjusting gear of a projection light source is characterized in that, comprising:
The first acquisition module is used for obtaining the first brightness a in some precalculated positions of the emergent light hot spot of projection light source
i
The second acquisition module is for the second brightness b of the some precalculated positions correspondence position in view field that obtains described emergent light hot spot
i
The 3rd acquisition module is for the expectation brightness p of the some precalculated positions correspondence position in view field that obtains described emergent light hot spot
i
The 4th acquisition module is used for by the three brightness c of following formula acquisition in some precalculated positions of the emergent light hot spot of the needed projection light source of view field's described expectation brightness of acquisition
i, so that be described the 3rd brightness c with the brightness adjustment in some precalculated positions of the emergent light hot spot of described projection light source
i,
7. optical projection system, it is characterized in that, described optical projection system comprises projection light source, light-modulating cell, projection lens, the emergent light of described projection light source incides described light-modulating cell, and outgoing finally shines view field through described projection lens projection to described projection lens after this light-modulating cell modulation;
Described projection light source comprises led array;
Described optical projection system also comprises the projection light source adjusting gear, and this adjusting gear is for the first brightness a in some precalculated positions of the emergent light hot spot that obtains projection light source
iObtain the second brightness b of some precalculated positions correspondence position in view field of described emergent light hot spot
iObtain the expectation brightness p of some precalculated positions correspondence position in view field of described emergent light hot spot
iBy the three brightness c of following formula acquisition in some precalculated positions of the emergent light hot spot of the needed projection light source of view field's described expectation brightness of acquisition
i:
Described adjusting gear also is used for adjusting the brightness of the described led array LED corresponding with described some precalculated positions, so that the brightness of LED that should correspondence is described the 3rd brightness c
i
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104954714A (en) * | 2015-06-24 | 2015-09-30 | 福州瑞芯微电子有限公司 | Method and device for performing projection on back of hand |
| CN104980676A (en) * | 2015-06-24 | 2015-10-14 | 福州瑞芯微电子有限公司 | Arm projection method and apparatus |
| CN105093801A (en) * | 2014-05-22 | 2015-11-25 | 上海华博信息服务有限公司 | Monoblock stereographic projection device based on color dividing |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003015102A (en) * | 2001-06-25 | 2003-01-15 | Prokia Technology Co Ltd | Liquid crystal projection type display device |
| JP2003295312A (en) * | 2002-04-02 | 2003-10-15 | Mitsubishi Electric Corp | Light irradiation device and projection type image display device |
| CN101013168A (en) * | 2007-02-01 | 2007-08-08 | 河南中光学集团有限公司 | High-light even facula adjustable projector |
| CN101038420A (en) * | 2006-03-14 | 2007-09-19 | 明基电通股份有限公司 | Projecting apparatus with function of brightness adjusting and homogenizing |
| CN101320198A (en) * | 2007-06-07 | 2008-12-10 | 明基电通信息技术有限公司 | Projector and method for regulating its brightness and degree of consistency |
| CN101329043A (en) * | 2007-06-18 | 2008-12-24 | 南茂科技股份有限公司 | Light source component and lightness adjusting method for the same |
| JP4797425B2 (en) * | 2005-04-12 | 2011-10-19 | カシオ計算機株式会社 | Light source unit and projection device |
-
2012
- 2012-08-30 CN CN201210312933.5A patent/CN102854724B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003015102A (en) * | 2001-06-25 | 2003-01-15 | Prokia Technology Co Ltd | Liquid crystal projection type display device |
| JP2003295312A (en) * | 2002-04-02 | 2003-10-15 | Mitsubishi Electric Corp | Light irradiation device and projection type image display device |
| JP4797425B2 (en) * | 2005-04-12 | 2011-10-19 | カシオ計算機株式会社 | Light source unit and projection device |
| CN101038420A (en) * | 2006-03-14 | 2007-09-19 | 明基电通股份有限公司 | Projecting apparatus with function of brightness adjusting and homogenizing |
| CN101013168A (en) * | 2007-02-01 | 2007-08-08 | 河南中光学集团有限公司 | High-light even facula adjustable projector |
| CN101320198A (en) * | 2007-06-07 | 2008-12-10 | 明基电通信息技术有限公司 | Projector and method for regulating its brightness and degree of consistency |
| CN101329043A (en) * | 2007-06-18 | 2008-12-24 | 南茂科技股份有限公司 | Light source component and lightness adjusting method for the same |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093801A (en) * | 2014-05-22 | 2015-11-25 | 上海华博信息服务有限公司 | Monoblock stereographic projection device based on color dividing |
| CN104980676B (en) * | 2015-06-24 | 2017-12-19 | 福州瑞芯微电子股份有限公司 | Arm projecting method and device |
| CN104980676A (en) * | 2015-06-24 | 2015-10-14 | 福州瑞芯微电子有限公司 | Arm projection method and apparatus |
| CN104954714A (en) * | 2015-06-24 | 2015-09-30 | 福州瑞芯微电子有限公司 | Method and device for performing projection on back of hand |
| CN104954714B (en) * | 2015-06-24 | 2017-12-19 | 福州瑞芯微电子股份有限公司 | The back of the hand projecting method and device |
| CN105280125A (en) * | 2015-11-23 | 2016-01-27 | 上海伟世通汽车电子系统有限公司 | Test method and test system for display roughness of display |
| CN105530498A (en) * | 2015-12-15 | 2016-04-27 | 深圳市时代华影科技股份有限公司 | 3D projection system capable of performing uniformity compensation on metal screen and compensation method thereof |
| CN106060491A (en) * | 2016-06-16 | 2016-10-26 | Tcl集团股份有限公司 | Projected image color correction method and apparatus |
| CN110161790A (en) * | 2016-12-19 | 2019-08-23 | 海信集团有限公司 | A kind of DLP ray machine lighting system |
| CN110673428A (en) * | 2018-07-03 | 2020-01-10 | 杭州海康机器人技术有限公司 | Structured light compensation method, device and system |
| CN110673428B (en) * | 2018-07-03 | 2021-06-18 | 杭州海康机器人技术有限公司 | Structured light compensation method, device and equipment |
| WO2020057299A1 (en) * | 2018-09-20 | 2020-03-26 | 深圳光峰科技股份有限公司 | Light source system and projection equipment |
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