CN108732712A

CN108732712A - Light path regulating method and light path regulating device

Info

Publication number: CN108732712A
Application number: CN201810519466.0A
Authority: CN
Inventors: 马小伟; 鲍光华; 吕建涛; 王克生
Original assignee: Goertek Inc
Current assignee: Goertek Optical Technology Co Ltd
Priority date: 2018-05-25
Filing date: 2018-05-25
Publication date: 2018-11-02
Anticipated expiration: 2038-05-25
Also published as: CN108732712B

Abstract

The present invention discloses a kind of light path regulating method and light path regulating device, wherein light path regulating method includes the following steps：Obtain the first angle between the first imaging beam and the second imaging beam；According to the first angle, first offset of second lens in the plane perpendicular to optical axis is determined；Obtain the first distance between the position and the position of the second hot spot of the first hot spot on imaging plane；According to the first distance, second offset of second lens in the plane perpendicular to optical axis is determined；According to the first offset and the second offset, third offset is determined；Position of second lens in the plane perpendicular to optical axis is adjusted according to third offset, to reduce the first angle and the first distance；Compare the first angle and predetermined angle and the first distance and pre-determined distance；When the first angle is less than or equal to predetermined angle, and the first distance is less than or equal to pre-determined distance, terminate this optical path adjusting.Technical solution of the present invention improves the assembling yield and efficiency of optical device.

Description

Light path regulating method and light path regulating device

Technical field

The present invention relates to optical technical field, more particularly to a kind of light path regulating method and light path regulating device.

Background technology

In the assembling of optical device, there is very high required precision to the position of wherein each optical element, especially with The development of technology, the volume of optical device itself further decreases, and assembly precision is caused to further increase.In assembling multi-pass Optical device when, not only need to ensure that each light path is accurate, it is also necessary to ensure that the relativeness between light path is accurate, with ensure not With the normal synthesis of light beam.Currently, this optical device usually by man-made assembly or it is semi-automatic assemble, the dependence to experience Property it is stronger, lack systematicness, it is difficult to ensure that accuracy and stability, the assembling yield and packaging efficiency of optical device are all very low.

Invention content

The main object of the present invention is to propose a kind of light path regulating method, it is intended to it is photosynthetic to solve multichannel in above-mentioned optical device At accuracy and stability difference problem, improve the assembling yield and packaging efficiency of optical device.

To achieve the above object, light path regulating method proposed by the present invention, it is described for adjusting the light path in optical device Optical device includes first light source, second light source, the first lens and the second lens, and first lens are located at the first light source Emitting light path on, second lens are located on the emitting light path of the second light source；

The light path regulating method includes the following steps：

Obtain the first angle between the first imaging beam and the second imaging beam, wherein first imaging beam comes Derived from the first light source, second imaging beam derives from the second light source；

According to first angle, first offset of second lens in the plane perpendicular to optical axis is determined；

Obtain the first distance between the position and the position of the second hot spot of the first hot spot on imaging plane, wherein described First hot spot is formed by first imaging beam on the imaging plane, and second hot spot is by second imaging beam It is formed on the imaging plane；

According to first distance, second offset of second lens in the plane perpendicular to optical axis is determined；

According to first offset and second offset, third offset is determined；

Position of second lens in the plane perpendicular to optical axis is adjusted according to the third offset, to reduce State the first angle and first distance；

Compare first angle and predetermined angle and first distance and pre-determined distance；

When first angle is less than or equal to the predetermined angle, and first distance be less than or equal to it is described default Apart from when, terminate this optical path adjusting.

Preferably, the step of comparing first angle and predetermined angle and first distance and pre-determined distance it Afterwards, the light path regulating method is further comprising the steps of：

When first angle is more than the predetermined angle or first distance is more than the pre-determined distance, return The step of executing the first angle between the first imaging beam of the acquisition and the second imaging beam；Or,

When first angle is more than the predetermined angle or first distance is more than the pre-determined distance, determine Described to compare first angle and predetermined angle, first the step of first distance and pre-determined distance accumulative executes time Number；

Compare the described first accumulative execution number and the first preset times；

When described first adds up to execute number less than first preset times, returns and execute the first imaging of the acquisition The step of the first angle between light beam and the second imaging beam；

When the described first accumulative execution number is greater than or equal to the first preset times, stop this optical path adjusting, and raw At standby signal.

Preferably, according to first angle, determine second lens in the plane perpendicular to optical axis first partially The step of shifting amount includes：

The second of the step of determining the first angle between the first imaging beam of the acquisition and the second imaging beam is accumulative Number i is executed, first angle that note ith obtains is α_i；

Compare first angle α_iWith the predetermined angle α₀；

When first angle α_iMore than the predetermined angle α₀, and described second is accumulative when executing number i and being more than 1, according to k1_i=α_i/D1_i-1-k1_i-1First adjustment factor k1 of the second lens described in calculating when the second accumulative execution number is i_i；

According to D1_i=α_i/k1_iFirst offset D1 of the second lens described in calculating when the second accumulative execution number is i_i；

When first angle α_iMore than the predetermined angle α₀, and described second is accumulative when executing number i and being equal to 1, according to D1₁=α₁/k1₁First offset D1 of the second lens described in calculating when the second cumulative number is 1₁；

Wherein, k1₁First adjustment factor of the second lens described in when for the second cumulative number being 1.

Preferably, according to first distance, determine second lens in the plane perpendicular to optical axis second partially The step of shifting amount includes：

Determine the first distance on the acquisition imaging plane between the position and the position of the second hot spot of the first hot spot The third of step is accumulative to execute number j, and first distance that note jth time obtains is β_j；

Compare first distance beta_jWith the pre-determined distance β₀；

When first distance beta_jMore than the pre-determined distance β₀, and the third is accumulative when executing number j and being more than 1, according to k2_j=(β_j-β_j-1)/D2_j-1Second adjustment factor k2 of the second lens described in calculating when the accumulative execution number of third is j_j；

According to D2_j=β_j/k2_jSecond offset D2 of the second lens described in calculating when the accumulative execution number of third is j_j；

When first distance beta_jMore than the pre-determined distance β₀, and the third is accumulative when executing number j and being equal to 1, according to D2₁=β₁/k2₁Second offset D2 of the second lens described in calculating when the accumulative execution number of third is 1₁；

Wherein, k2₁Second adjustment factor of the second lens described in being executed when number is 1 for third is accumulative.

Preferably, according to first offset and second offset, the step of determining third offset, includes：

According to first offset, obtains first position of second lens in the plane perpendicular to optical axis and adjust Range；

According to second offset, obtains the second position of second lens in the plane perpendicular to optical axis and adjust Range；

The center for determining the overlapping region of first adjustable range and second adjustable range, by the overlapping region Center corresponding to offset as the third offset.

Preferably, the optical device further includes variable mirror, and the variable mirror is located at first lens On emitting light path, and the variable mirror is located on the emitting light path of second lens；

Before the step of executing the first angle between the first imaging beam of the acquisition and the second imaging beam for the first time, The light path regulating method is further comprising the steps of：

The position of first lens and second lens in the plane perpendicular to optical axis is adjusted, so that described first The third hot spot that imaging beam is formed on the variable mirror is located in the first preset range of the variable mirror, institute State the second default model that the 4th hot spot that the second imaging beam is formed on the variable mirror is located at the variable mirror In enclosing；

The position of first lens and second lens on the optical axis direction is adjusted, so that first imaging Light beam focuses on the imaging plane, and second imaging beam focuses on the imaging plane.

Preferably, position of first lens in the plane perpendicular to optical axis is adjusted, so that first imaging The third hot spot that beam is formed on the variable mirror is located at the step packet in the first preset range of the variable mirror It includes：

First lens are placed in except the light path of the optical device, it is described variable to control the first light source irradiation Speculum, and obtain the first image that the variable mirror is formed on the imaging plane；

According to described first image, the first preset range corresponding first object model on the imaging plane is obtained It encloses；

Among first lens are placed in the light path of the optical device, the position of first hot spot is obtained；

According to the position of the first object range and first hot spot, the 4th offset of first lens is determined Amount；

Position of first lens in the plane perpendicular to optical axis is adjusted according to the 4th offset, so that described First hot spot is located within the scope of the first object.

Preferably, the position of first lens in the direction of the optical axis is adjusted, so that first imaging beam focuses on The step of imaging plane includes：

Obtain the relationship between the spot size and image-forming range of lens；

According to the relationship between the spot size and image-forming range, of first lens in the direction of the optical axis is determined One axial position, and first lens are adjusted to the first axial position；

When obtaining first lens and being located at the first axial position, the first size of first hot spot；

According to the relationship between the first size and the spot size and image-forming range, determine that first lens exist The second axial position on optical axis direction and third axial position；

First lens are adjusted to the second axial position, and obtains first lens and is located at described second axially When position, the second size of first hot spot；

First lens are adjusted to the third axial position, and obtains first lens and is located at third axial direction When position, the third size of first hot spot；

The first minimum spot size in the first size, second size and the third size is determined, by institute The position of first lens in the direction of the optical axis described in when the spot size for stating the first hot spot is the first minimum spot size, as more The first axial position after new, and first lens are adjusted to the first axial position；

Return to described when obtaining first lens and being located at the first axial position, the first size of first hot spot The step of, until when time minimum spot size of acquisition is greater than or equal to the minimum spot size or described first of previous acquisition Second distance between axial position and the second axial position be less than minimum adjustable distance or the first axial position and Third distance between the third axial position is less than minimum adjustable distance or acquisition first lens positioned at described When the first axial position, the step of the first size of first hot spot the 4th accumulative execute number to be greater than or equal to second pre- If number.

Preferably, execute for the last time it is described adjust the step of first lens are to the first axial position it Afterwards, further comprising the steps of：

According to default step-length and preset direction, the 4th axial position of first lens in the direction of the optical axis is determined, and First lens are adjusted to the 4th axial position；

When obtaining first lens and being located at four axial position, the 4th size of the first hot spot；

Before and after first lens to the 4th axial position will be adjusted, the spot size of first hot spot is by becoming greatly The moving direction of hour first lens in the direction of the optical axis, as updated preset direction；

It is described according to default step-length and preset direction to return to execution, determines the 4th of first lens in the direction of the optical axis Axial position, and the step of first lens are to four axial position is adjusted, until accumulative the 4th ruler obtained Very little number is greater than or equal to preset number；

According to each 4th axial position of first lens and corresponding 4th size, updated lens are determined Spot size and image-forming range between relationship；

According to the relationship between the spot size and image-forming range of updated lens, determine first lens in optical axis The 5th axial position on direction, and first lens are adjusted to the 5th axial position；

When obtaining first lens and being located at five axial position, the 5th size of the first hot spot；

Determine the first size, second size, the third size, the 4th size and the 5th size In the second minimum spot size, by the spot size of first hot spot be the second minimum spot size when described in the first lens Position in the direction of the optical axis as the focal position of first lens, and adjusts first lens to the focusing position It sets.

Preferably, the position of first lens and second lens on the optical axis direction is being adjusted, so that institute State the first imaging beam and focus on the imaging plane, the step of second imaging beam focuses on the imaging plane it Afterwards, the light path regulating method is further comprising the steps of：

The position of first lens and second lens in the plane perpendicular to optical axis is adjusted, so that described first The third hot spot that imaging beam is formed on the variable mirror is located in the third preset range of the variable mirror, institute State the 4th default model that the 4th hot spot that the second imaging beam is formed on the variable mirror is located at the variable mirror In enclosing；

Wherein, the third preset range is less than or equal to first preset range, and the 4th preset range is less than Or it is equal to second preset range.

Preferably, when first angle is less than or equal to the predetermined angle, and first distance is less than or equal to When the pre-determined distance, the step of terminating this optical path adjusting, includes：

When first angle is less than or equal to the predetermined angle, and first distance be less than or equal to it is described default Apart from when, obtain the 6th size of first hot spot and the seven foot cun of second hot spot；

Compare the 6th size and the first pre-set dimension and the seven foot cun and the second pre-set dimension；

When the 6th size is less than or equal to first pre-set dimension, and the seven foot cun be less than or equal to it is described When the second pre-set dimension, terminate this optical path adjusting；

When the 6th size is more than first pre-set dimension or the seven foot cun more than second pre-set dimension When, the position of first lens and second lens on the optical axis direction is adjusted, so that first imaging beam The imaging plane is focused on, second imaging beam focuses on the imaging plane.

The present invention also proposes a kind of light path regulating device, for adjusting the light path in optical device, the optical device packet First light source, second light source, the first lens and the second lens are included, first lens are located at the emitting light path of the first light source On, second lens are located on the emitting light path of the second light source；

The light path regulating device includes the first image-forming assembly, drive component, memory, processor and is stored in described deposit On reservoir and the optical path adjusting program that can run on the processor, wherein：First image-forming assembly is located at described first On the emitting light path of lens, and first image-forming assembly is located on the emitting light path of second lens, first imaging Component is receiving first hot spot and second hot spot；The driving component and first lens and described second are thoroughly Mirror is connected, and the driving component is adjusting the position of the position and second lens of first lens；The light path tune The step of section program realizes the light path regulating method when being executed by the processor, the light path regulating method includes following step Suddenly：Obtain the first angle between the first imaging beam and the second imaging beam, wherein first imaging beam derives from institute First light source is stated, second imaging beam derives from the second light source；According to first angle, described second is determined thoroughly First offset of the mirror in the plane perpendicular to optical axis；Obtain the position of the position and the second hot spot of the first hot spot on imaging plane The first distance between setting, wherein first hot spot is formed by first imaging beam on the imaging plane, described Second hot spot is formed by second imaging beam on the imaging plane；According to first distance, described second is determined Second offset of the lens in the plane perpendicular to optical axis；According to first offset and second offset, determine Third offset；Position of second lens in the plane perpendicular to optical axis is adjusted according to the third offset, to subtract Small first angle and first distance；Compare first angle and predetermined angle and first distance and pre- If distance；When first angle is less than or equal to the predetermined angle, and first distance be less than or equal to it is described default Apart from when, terminate this optical path adjusting.

The light path regulating device further includes beam splitter and the second image-forming assembly, and the beam splitter is located at the Variable reflectance On the emitting light path of mirror, first image-forming assembly is located on the first emitting light path of the beam splitter；Second image-forming assembly, institute It states the second image-forming assembly to be located on the second emitting light path of the beam splitter, second image-forming assembly is receiving described first Hot spot and second hot spot.

Preferably, first image-forming assembly includes holographic diffusion screen and focus calibration camera；The second imaging group Part includes conjugated lens and position correction camera.

In technical solution of the present invention, light path regulating method includes the following steps：Obtain the first imaging beam and the second imaging The first angle between light beam, wherein the first imaging beam derives from first light source, and the second imaging beam derives from the second light Source；According to the first angle, first offset of second lens in the plane perpendicular to optical axis is determined；It obtains the on imaging plane The first distance between the position of one hot spot and the position of the second hot spot, wherein the first hot spot is being imaged by the first imaging beam It is formed in plane, the second hot spot is formed by the second imaging beam on imaging plane；According to the first distance, determine that the second lens exist The second offset in the plane of optical axis；According to the first offset and the second offset, third offset is determined；According to Third offset adjusts position of second lens in the plane perpendicular to optical axis, to reduce the first angle and the first distance；Than To the first angle and predetermined angle and the first distance and pre-determined distance；When the first angle is less than or equal to predetermined angle, and the When one distance is less than or equal to pre-determined distance, terminate this optical path adjusting.When adjusting optical device, using a wherein light path as base Quasi-optical road (light path where the first imaging beam), according to the imaging beam of modulated light road (light path where the second imaging beam) In angle and modulated light road between the imaging beam of reference light path in hot spot and reference light path hot spot on imaging plane The distance between position, determine the first offset and the second offset of the second lens in modulated light road respectively, and according to the One offset and the second offset obtain the third offset of control the second lens movement, and adjust the according to third offset The position of two lens, until the first angle is less than or equal to predetermined angle, the first distance is less than or equal to pre-determined distance, to make The imaging beam on modulated light road can normally be synthesized with the imaging beam of reference light path.Light path regulating method proposed by the present invention makes The adjusting of light path is more systematic in optical device, and this systematicness makes the automatic adjustment of light path become possible, convenient for using driving Component etc. drives the second lens to change position automatically according to third offset, meanwhile, this light path regulating method also improves more The accuracy and stability of road imaging beam synthesis, make the assembling yield of optical device and packaging efficiency be obtained for improvement.

Description of the drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with The structure shown according to these attached drawings obtains other attached drawings.

Fig. 1 is the structural schematic diagram of the optical device and light path regulating device of one embodiment of light path regulating device of the present invention；

Fig. 2 is the flow diagram of light path regulating method first embodiment of the present invention；

The calculating schematic diagram of first angle in the light path regulating method that Fig. 3 is Fig. 2；

Fig. 4 is the flow diagram of the 7th embodiment of light path regulating method of the present invention；

Fig. 5 is the relationship between the spot size and image-forming range of the lens of the 9th embodiment of light path regulating method of the present invention Schematic diagram.

The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.

Specific implementation mode

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its His embodiment, shall fall within the protection scope of the present invention.

If it is to be appreciated that related in the embodiment of the present invention directionality instruction (such as up, down, left, right, before and after ...), Then directionality instruction be only used for explaining relative position relation under a certain particular pose (as shown in the picture) between each component, Motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes correspondingly.

If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, it is somebody's turn to do " first ", " second " etc. Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy Sign.In addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy It is enough realize based on, when the knot that conflicting or cannot achieve when will be understood that this technical solution occurs in the combination of technical solution Conjunction is not present, also not the present invention claims protection domain within.

The present invention proposes a kind of light path regulating method.

In the first embodiment of the present invention, as shown in Figure 1, optical device 100 includes first light source 111, second light source 112, the first lens 121 and the second lens 122, the first lens 121 are located on the emitting light path of first light source 111, the second lens 122 are located on the emitting light path of second light source 112.

Specifically, the optical device 100 in the present embodiment can be micro-projector, in order to realize colour projection, micro- projection The first light source 111 for corresponding to green, red, blue three kinds of coloured light respectively, second light source 112 and third light source 113 are typically provided in instrument, it is right Each light source is answered to be respectively provided with the first light path, the second light path and third light path, and each light channel structure is substantially similar.It is micro- in order to reduce Space shared by the optical devices such as projecting apparatus, can be anti-first to be respectively set in the first light path, the second light path and third light path Mirror 141, the second speculum 142 and third speculum 143 etc. are penetrated, to change the direction of propagation of light, improves the sky in optical device Between utilization rate.When adjusting micro-projector, mainly by adjusting each lens in the first light path, the second light path and third light path, The position for specifically including the first lens 121, the second lens 122 and the third lens 123, enables green, red, blue three color light being imaged Colour projection's image is synthesized in plane.It should be noted that lens here can be single lens, can also be that can expire The lens group of the certain imaging requirements of foot can refer to the regulative mode of lens group the adjusting side of single lens when adjusting light path Formula, to realize the synthesis of imaging beam in different light paths.It below, will be by such as how light path on the basis of the first light path, to Two light paths (modulated light road) are adjusted, and realize the synthesis of the imaging beam and the imaging beam in the second light path in the first light path For, technical solution of the present invention is described in detail.It should be noted that, in other optical devices, it is also possible to exist according to The multichannel light path of other modes setting, those skilled in the art can be right according to the mode for adjusting the second light path in the present embodiment Various forms of light paths are adjusted, that is, adjust modulated light road according to reference light path respectively, until all light paths are all adjusted Section finishes.Since green light is substantially at the center wave band of visible light, in micro-projector, usually using the corresponding light path of green light as base Quasi-optical road adjusts the light path where feux rouges and blue light respectively, it is of course also possible to which light path on the basis of other light paths is arbitrarily selected to carry out It adjusts.In the present embodiment, mainly make the first imaging from first light source 111 by adjusting the position of the second lens 122 It light beam and can normally be synthesized from the second imaging beam of second light source 112.

As shown in Fig. 2, light path regulating method includes the following steps：

Step S100, the first angle between the first imaging beam and the second imaging beam is obtained；

Wherein, the first imaging beam derives from first light source 111, and the second imaging beam derives from second light source 112.Consider Under the action ofs speculum etc. deviation may occur for the light beam sent out to light source in the optical path, when calculating the first angle, meter After calculating the first lens 121 and the second lens 122, and the first imaging beam and second between corresponding optical element Angle between imaging beam, as the first angle.In describing later, for simplicity, according near imaging plane First imaging beam and the second imaging beam are calculated.In general, first between the first imaging beam and the second imaging beam Angle is a smaller acute angle.As shown in figure 3, in a specific example, it is common with the first imaging beam and the second imaging beam The plane at place is YZ planes, and the calculating of the first angle α can be according to α=arctan (m₂/n)-arctan(m₁/ n) it obtains, In, m₁The first hot spot formed on imaging plane for the first imaging beam between imaging plane center at a distance from (assuming that When one hot spot is located at imaging plane overcentre, m₁For just；When first hot spot is located at imaging plane central lower, m₁It is negative), m₂ The second hot spot formed on imaging plane for the second imaging beam between imaging plane center at a distance from (assuming that the second hot spot When positioned at imaging plane overcentre, m₂For just；When second hot spot is located at imaging plane central lower, m₂It is negative), imaging plane Intersection point of the center between imaging plane and optical axis；N is image-forming range, and image-forming range is the first imaging near imaging plane The intersection point and imaging plane center of straight line where light beam and the straight line where the second imaging beam near imaging plane it Between distance.

Step S200, according to the first angle, first offset of second lens 122 in the plane perpendicular to optical axis is determined Amount；

When the first angle is excessive, the first imaging beam and the second imaging beam will be difficult to synthesize, and need by adjusting the Two lens 122 are in the position on optical axial plane, to reduce first between the first imaging beam and the second imaging beam Angle.Wherein, the first offset of the second lens 122 is determined according to the first angle, and the first angle is bigger, corresponding first Offset is also bigger, to correct the position of the second lens.It, can also be according to known imaging beam when determining the first offset Direction and the position of the second lens between correspondence, calculate the first offset, hereinafter also will be apparent from.

Step S300, the first distance on imaging plane between the position and the position of the second hot spot of the first hot spot is obtained；

Wherein, the first hot spot is formed by the first imaging beam on imaging plane, and the second hot spot is existed by the second imaging beam It is formed on imaging plane.As shown in figure 3, calculate first apart from when, when taking the first imaging beam and the second imaging beam common When the plane at place is YZ planes, the distance between the first hot spot and the second hot spot can be according to the first hot spots and second in Y-direction The position of hot spot obtains.If should be noted that the first imaging beam and the second imaging beam not necessarily all in YZ planes, It needs to consider the distance of the first hot spot and the second hot spot in all directions comprehensively, the first light is obtained further according to the orthogonality relation of coordinate The distance between spot and the second hot spot.

Step S400, according to the first distance, second offset of second lens in the plane perpendicular to optical axis is determined；

When first apart from it is excessive when, the first imaging beam and the second imaging beam are also difficult to synthesize, and need by adjusting the Two lens 122 are in the position on optical axial plane, between the position and the position of the second hot spot to reduce the first hot spot First distance.Wherein, the second offset of the second lens 122 is determined according to the first distance, and the first distance is bigger, accordingly Second offset is also bigger, to correct the position of the second lens.It, can also when determining the second offset of the second lens 122 It is correspondingly decomposed according to orthogonal coordinate system shown in Fig. 3, obtains the second offset component in the X direction and in the Y direction respectively On component, since X-direction and Y-direction are mutually perpendicular to, between X-direction and Y-direction substantially not when adjusting the second lens Interference is will produce, is conducive to simplify adjustment process.It, can also be flat in imaging according to known hot spot when determining the second offset The correspondence between position and the position of the second lens on face calculates the second offset, hereinafter also will be apparent from.

Step S500, according to the first offset and the second offset, third offset is determined；

When in order to avoid the first angle being adjusted, cause first apart from excessive, or the first distance is adjusted When, cause the first angle excessive, need, according to the first offset and the second offset, to determine third offset, thoroughly to second The adjustable range of mirror 122 is defined, and is interfered with each other with reducing the adjusting between the first angle and the first distance.In general, according to The overlapping of second position adjustable range determined by first position adjustable range and the second offset determined by first offset Region determines third offset, when the second lens 122 of limitation change position in overlapping region, can be achieved at the same time first The optimization of angle and the first distance, hereinafter also will be apparent from.

Step S600, position of second lens 122 in the plane perpendicular to optical axis is adjusted according to third offset, to subtract Small first angle and the first distance；

After determining third offset, according to the second lens of third offset pair 122 in the plane perpendicular to optical axis On position carry out actual adjusting, to reduce the first angle and the first distance.It is adjusted to simplify, avoids X-direction and Y-direction Between adjusting interfere with each other, can determine the component of third offset in the X direction and component in the Y direction respectively, The position of second lens is adjusted.The adjusting of second lens, 122 position can also be automatically performed by drive component, to carry The accuracy and stability that high position is adjusted.

Step S710, the first angle and predetermined angle and the first distance and pre-determined distance are compared；

By comparing the first angle and predetermined angle, the first distance and pre-determined distance, the first imaging beam and second are determined Whether imaging beam can normally synthesize, to further determine whether to need the position to the second lens 122 to continue to adjust.

Step S721, when the first angle is less than or equal to predetermined angle, and the first distance is less than or equal to pre-determined distance, Terminate this optical path adjusting.

When the first angle is less than or equal to predetermined angle, and the first distance is less than or equal to pre-determined distance, show first Deviation very little between imaging beam and the second imaging beam, it is already possible to which normal synthesis then terminates this optical path adjusting.

In the present embodiment, light path regulating method includes the following steps：Obtain the first imaging beam and the second imaging beam Between the first angle, wherein the first imaging beam derive from first light source 111, the second imaging beam derive from second light source 112；According to the first angle, first offset of second lens 122 in the plane perpendicular to optical axis is determined；Obtain imaging plane The first distance between the position and the position of the second hot spot of upper first hot spot, wherein the first hot spot is existed by the first imaging beam It is formed on imaging plane, the second hot spot is formed by the second imaging beam on imaging plane；According to the first distance, second is determined thoroughly Second offset of the mirror 122 in the plane perpendicular to optical axis；According to the first offset and the second offset, determine that third deviates Amount；Position of second lens 122 in the plane perpendicular to optical axis is adjusted according to third offset, to reduce the first angle and the One distance；Compare the first angle and predetermined angle and the first distance and pre-determined distance；It is preset when the first angle is less than or equal to Angle, and first distance be less than or equal to pre-determined distance when, terminate this optical path adjusting.When adjusting optical device, with wherein Light path (light path where the first imaging beam) on the basis of one light path, according to modulated light road (light path where the second imaging beam) Imaging beam and the imaging beam of reference light path between angle and modulated light road in hot spot and reference light path hot spot exist The distance between position on imaging plane determines that the first offset of the second lens 122 and second is partially in modulated light road respectively Shifting amount, and according to the first offset and the second offset, obtains the third offset of control the second lens 122 movement, and according to Third offset adjust the second lens 122 position, until the first angle be less than or equal to predetermined angle, the first distance be less than or Equal to pre-determined distance, to enable the imaging beam on modulated light road normally to be synthesized with the imaging beam of reference light path.The present invention The light path regulating method of proposition keeps the adjusting of light path in optical device more systematic, and this systematicness makes being automatically adjusted to for light path To be possible, convenient for using drive component etc. that the second lens 122 is driven to change position automatically according to third offset, meanwhile, it is this Light path regulating method also improves the accuracy and stability of multi-channel image light beam synthesis, makes the assembling yield and group of optical device Dress efficiency is obtained for improvement.

Based on above-mentioned first embodiment, in the second embodiment of the present invention, after step S710, light path regulating method It is further comprising the steps of：

Step S722, it when the first angle is more than predetermined angle or the first distance is more than pre-determined distance, returns to step S100。

In the present embodiment, after the position for changing the second lens 122 every time, if the first angle is more than preset angle Degree or first distance be more than pre-determined distance, show at this time the deviation between the first imaging beam and the second imaging beam still compared with Greatly, the synthesis of the first imaging beam and the second imaging beam will be influenced, therefore by returning to step S100, is continued to The position of two lens 122 is adjusted, until the first angle is less than or equal to predetermined angle, and the first distance is less than or equal in advance If apart from when, terminate adjust.

Based on above-mentioned first embodiment, in the third embodiment of the present invention, after step S710, light path regulating method It is further comprising the steps of：

Step S723, when the first angle is more than predetermined angle or the first distance is more than pre-determined distance, step S710 is determined First accumulative execute number；

Step S724, the first accumulative execution number and the first preset times are compared；

Step S725, when the first accumulative execution number is less than the first preset times, S100 is returned to step；

Step S726, when the first accumulative execution number is greater than or equal to the first preset times, stop this optical path adjusting, And generate standby signal.

In the present embodiment, it is contemplated that optical device itself causes not adjusting to the first one-tenth always there may be problem As the state that light beam and the second imaging beam normally synthesize, is adjusted in order to avoid lasting progress is invalid and cause optical device assembling effect Rate it is low, the execution number of step S710 is added up.That is, the first accumulative execution number as step S710 is big When the first preset times, shows that the position of the second lens 122 was repeatedly changed, still do not reach optics The adjusting requirement of light path in equipment stops this optical path adjusting and by generating standby signal, related personnel is prompted to set optics It is standby to be checked, to improve adjusting efficiency；When the first accumulative execution number is less than the first preset times, show the second lens Upper limit number has not yet been reached in the adjusting number of 122 position, then return to step S100 continues to adjust the light path of optical device Section.

Based on the various embodiments described above, in the fourth embodiment of the present invention, step S200 includes：

Step S210, the second accumulative execution number i of step S100 is determined, the first angle that note ith obtains is α_i；

Step S220, the first angle α is compared_iWith predetermined angle α₀；

Step S231, when the first angle α_iMore than predetermined angle α₀, and second is accumulative when executing number i and being more than 1, according to k1_i =α_i/D1_i-1-k1_i-1Calculate the second accumulative the first adjustment factor k1 for executing the second lens when number is i_i；

Step S232, according to D1_i=α_i/k1_iCalculate the second accumulative the first offset for executing the second lens when number is i D1_i；

Step S240, when the first angle α_iMore than predetermined angle α₀, and second is accumulative when executing number i and being equal to 1, according to D1₁ =α₁/k1₁Calculate the first offset D1 of the second lens when the second cumulative number is 1₁；

Wherein, k1₁First adjustment factor of the second lens when for the second cumulative number being 1.In the present embodiment, using by The determining method of step show that the first offset, the first adjustment factor characterize the offset and the first angle of the second lens 122 Relationship between variation.It is each determine the first offset during, all in accordance with the first offset obtained by the last time and upper First adjustment factor is updated this first adjustment factor used by primary, is adjusted to avoid excessive, improves and adjust Efficiency.Specifically, determining the first offset D1 for the first time₁When, according to preset first adjustment factor k1₁It obtains for the first time First angle α₁, obtain the first offset D1₁=α₁/k1₁.Step S300 is being continued to execute to step S600, that is, according to After the practical position for changing the second lens 122 of third offset once obtained, if the first angle α at this time₂Still above Predetermined angle α₀, then need to carry out second of adjusting.The first offset D1 is determined at second₂When, according to k1₂=α₂/D1₁-k1₁ Obtain the second adjustment factor k1₂, further according to D1₂=α₂/k1₂Determine the second offset D1₂, step S300 is continued to execute to step S600 changes the position of the second lens 122 according to the third offset that obtains for the second time, and so on be adjusted, until the One angle is less than or equal to predetermined angle, and the first distance is less than or equal to pre-determined distance.It, can be with when determining the first offset Space is decomposed according to orthogonal coordinate system, obtains the first offset in all directions, to simplify the tune of the second lens 122 Section.

Based on the various embodiments described above, in the fifth embodiment of the present invention, step S400 includes：

Step S410, it determines that the third of step S300 is accumulative and executes number j, the first distance that note jth time obtains is β_j；

Step S420, the first distance beta is compared_jWith pre-determined distance β₀；

Step S431, when the first distance beta_jMore than pre-determined distance β₀, and third is accumulative when executing number j and being more than 1, according to k2_j =(β_j-β_j-1)/D2_j-1Calculate accumulative the second adjustment factor k2 for executing the second lens when number is j of third_j；

Step S432, according to D2_j=β_j/k2_jCalculate accumulative the second offset for executing the second lens when number is j of third D2_j；

Step S440, when the first distance beta_jMore than pre-determined distance β₀, and third is accumulative when executing number j and being equal to 1, according to D2₁ =β₁/k2₁Calculate accumulative the second offset D2 for executing the second lens when number is 1 of third₁；

Wherein, k2₁For accumulative the second adjustment factor for executing the second lens when number is 1 of third.In the present embodiment, it adopts The second offset is obtained with gradually determining method, and the second adjustment factor characterizes the offset of the second lens 122 and hot spot exists The relationship between change in location on imaging plane.During each determining second offset, obtained by the last time The second offset and it is last used by the second adjustment factor this second adjustment factor is updated, to avoid mistake Degree is adjusted, and is improved and is adjusted efficiency.Specifically, determining the second offset D2 for the first time₁When, according to preset second adjustment factor k2₁ The first distance beta obtained for the first time₁, obtain the second offset D2₁=β₁/k2₁.Step S500 is being continued to execute to step S600, that is, according to the practical position for changing the second lens 122 of the third offset obtained for the first time after, if at this time One distance beta₂Still above pre-determined distance β₀, then need to carry out second of adjusting.The second offset D2 is determined at second₂When, root According to k2₂=(β₂-β₁)/D2₂Obtain the second adjustment factor k2₂, further according to D2₂=β₂/k2₂Determine the second offset D2₂, continue to hold Row step S500 to step S600 changes the position of the second lens 122 according to the third offset obtained for the second time, and so on It is adjusted, until the first angle is less than or equal to predetermined angle, and the first distance is less than or equal to pre-determined distance.Determining When two offsets, space can be decomposed according to orthogonal coordinate system, the second offset in all directions is obtained, with simplification The adjusting of second lens 122.

Based on the various embodiments described above, in the sixth embodiment of the present invention, step S500 includes：

Step S510, according to the first offset, first position tune of second lens in the plane perpendicular to optical axis is obtained Adjusting range；

Step S520, according to the second offset, second position tune of second lens in the plane perpendicular to optical axis is obtained Adjusting range；

Step S530, the center for determining the overlapping region of the first adjustable range and the second adjustable range, by overlapping region Offset corresponding to center is as third offset.

In order to avoid being interfered between the first angle and the adjusting of the first distance, there is the first angle and become hour, first Distance increase or first distance reduce when, the first angle increase the case where, in the present embodiment, consider the first offset Amount and the second offset, to determine the practical knots modification of 122 position of the second lens, i.e. third offset.Specifically, obtaining second First position adjustable range of the lens 122 in the plane perpendicular to optical axis, the first offset are according to obtained by the first angle The maximal regulated amount of second lens, first position adjustable range are within the maximal regulated amount corresponding to the first offset.Together Reason obtains second position adjustable range of second lens 122 in the plane perpendicular to optical axis according to the second offset, and second Offset is the maximal regulated amount according to first the second lens apart from gained, and second position adjustable range is in the second offset Within corresponding maximal regulated amount.So, according to the overlapping region of first position adjustable range and second position adjustable range, i.e., The adjustable range of available the second lens 122 that can either reduce the first angle again and can reduce the first distance.Further, it is It improves and adjusts efficiency, it is third offset to take the center of overlapping region, to ensure the first angle and first apart from equal energy On the basis of enough reductions, realizes and quickly adjust.

Based on the various embodiments described above, in the seventh embodiment of the present invention, as shown in Figure 1, optical device further includes that can be changed Speculum 130, variable mirror 130 is located on the emitting light path of the first lens 121, and variable mirror is located at the second lens On 122 emitting light path；

As shown in figure 4, before executing step S100 for the first time, light path regulating method is further comprising the steps of：

Step S810, the position of the first lens and the second lens in the plane perpendicular to optical axis is adjusted, so that the first one-tenth The third hot spot formed on variable mirror as light beam is located in the first preset range of variable mirror, the second imaging beam The 4th hot spot formed on variable mirror is located in the second preset range of variable mirror；

Step S820, the position of the first lens and the second lens in the direction of the optical axis is adjusted, so that the first imaging beam is poly- Coke focuses on imaging plane in imaging plane, the second imaging beam.

Since micro-shifting may occur for the position of optical element after long-time service, when adjusting light path, imaging should be made as far as possible Light beam is radiated at the center of optical element, in this way, even if the position of optical element is deviated, to the shadow being ultimately imaged Sound is also smaller.Therefore, it in adjusting different light paths before the synthesis of imaging beam, needs that each light path is adjusted respectively, with So that imaging beam is radiated at the center of optical element substantially in each light path, and normally focus, to obtain preferable imaging Effect.Specifically, by adjusting the first lens 121 and the second lens 122 in the position on optical axial plane, make the first one-tenth The third hot spot formed on variable mirror 130 as light beam is located in the first preset range of variable mirror 130, and first is pre- If range is usually the range of 130 immediate vicinity of variable mirror, and makes the second imaging beam shape on variable mirror 130 At the 4th hot spot be located in the second preset range of variable mirror 130, the second preset range is generally also variable mirror The range of 130 immediate vicinities, can also be consistent with the first preset range.By adjusting the first lens 121 and the second lens 122 Position in the direction of the optical axis enables the first imaging beam and the second imaging beam to be focused on imaging plane, clear to realize Clear display effect.

Below, by by taking the adjusting of the first light path where first light source 111 as an example, to the position of imaging beam in light path It sets adjusting and focus adjustment is described in detail, skilled person will appreciate that, the adjusting of other each light paths can refer to first The adjusting of light path carries out.Based on the seventh embodiment of the present invention, in the eighth embodiment of the present invention, step S810 includes：

Step S811, the first lens 121 are placed in except the light path of optical device, the control irradiation of first light source 111 is variable Speculum 130, and obtain the first image that variable mirror 130 is formed on imaging plane；

Step S812, according to the first image, the first preset range corresponding first object range on imaging plane is obtained；

Step S813, the first lens 121 are placed among the light path of optical device, obtain the position of the first hot spot；

Step S814, according to the position of first object range and the first hot spot, the 4th offset of the first lens is determined；

Step S815, position of first lens in the plane perpendicular to optical axis is adjusted according to the 4th offset, so that the One hot spot is located within the scope of first object.

When in the present embodiment, except the first lens 121 are in light path, Variable reflectance is illuminated by first light source 111 Mirror 130 obtains the first image, and the first image corresponds to the image of variable mirror 130, according to the first image, it may be determined that can Become the corresponding first object range on imaging plane of the first preset range on speculum 130.It is placed in by the first lens 121 After in light path, imaging beam is assembled, and the first hot spot is formed, when the first hot spot is in first object range, you can with It determines that the light beam that first light source 111 generates substantially is radiated within the first preset range of variable mirror 130, meets and adjust Section requires.

Based on above-mentioned 7th embodiment and the 8th embodiment, in the ninth embodiment of the present invention, step S820 includes：

Step S821, the relationship between the spot size and image-forming range of lens is obtained；

Step S822, according to the relationship between spot size and image-forming range, the first lens 121 are determined in the direction of the optical axis The first axial position, and adjust the first lens 121 to the first axial position；

Step S823a, when the first lens 121 of acquisition are located at the first axial position, the first size of the first hot spot；

Step S823b, according to the relationship between first size and spot size and image-forming range, the first lens 121 are determined The second axial position in the direction of the optical axis and third axial position；

Step S823c, the first lens 121 are adjusted to the second axial position, and obtains the first lens 121 and is located at second axially When position, the second size of the first hot spot；

Step S823d, the first lens 121 are adjusted to third axial position, and obtains the first lens and is located at third axial direction position When setting, the third size of the first hot spot；

Step S823e, the first minimum spot size in first size, the second size and third size is determined, by first The position of first lens 121 in the direction of the optical axis when the spot size of hot spot is the first minimum spot size, as updated The first axial position, and the first lens are adjusted to the first axial position；

Step S823f, return to step S823a, until when time minimum spot size of acquisition is greater than or equal to previous acquisition Minimum spot size or the first axial position and the second axial position between second distance be less than minimum adjustable distance, or The 4th of third distance less than minimum adjustable distance or step S823a between the first axial position and third axial position tires out Meter executes number and is greater than or equal to the second preset times.

In the present embodiment, according to the relationship between the spot size of lens and image-forming range, the poly- of the first lens is determined Burnt position.Specifically, the relationship between the spot size and image-forming range of lens, can by measure it is multiple (be usually 50~ 100) and the first lens 121 with the relationship in the lens of money between spot size and image-forming range, and further counted, The acquisitions such as average, fitting.As shown in figure 5, the relation schematic diagram between the spot size and image-forming range of a kind of lens, in figure 1 μm is divided between each measurement point, measurement range is about 300 μm, between the spot size R being fitted and image-forming range Z Relationship be：Owing coke, R=135538Z+514588, in overfocus, R=-83849Z-315434.It needs to note Meaning, above-mentioned fit correlation is different such as the type of the first selected lens 121 and changes.According to hot spot ruler The very little relationship between image-forming range substantially determines the focal position of the first lens, i.e. the first axial position, that is, hot spot ruler When very little close minimum, correspond to the first axial position of the first lens 121 of image-forming range, and the first lens are adjusted to first Axial position.

Since there may be differences for the imaging performances of the first different lens 121, it is also necessary to advanced optimize its and focus position It sets.When being located at the first axial position by obtaining the first lens, the first size of the first hot spot, further according to first size and hot spot Relationship between size and image-forming range determines that the first lens 121 the second axial position in the direction of the optical axis and third are axial Position.As can be seen from FIG. 5, in the case where the first hot spot does not reach minimum dimension, correspond to same first size, first thoroughly Mirror is likely located at the corresponding position for owing coke, it is also possible to be located at the position of corresponding overfocus, this fashion cannot determine the first axial position Corresponding to deficient burnt or overfocus, by adjusting the first lens 121 respectively to the second axial position and third axial position, and obtain The second size and third size of first hot spot compare first size, the second size and third size, obtain wherein minimum light Spot size, i.e. the first minimum spot size, the positions of corresponding first lens of the first minimum spot size 121 is closer to focusing Position using the position as updated the first axial position, and adjusts the first lens 121 to updated first axis position It sets.And so on continue that the position of the first lens 121 in the direction of the optical axis is adjusted, until when time obtain minimum light spot Size, which is more than, obtains the minimum spot size equal to previous acquisition, that is, this method is difficult to effectively optimize focusing again.Alternatively, considering It is not absolute continuation to be adjusted to the position of the first lens 121, when the between the first axial position and the second axial position It when two distances are less than minimum adjustable distance, actually cannot accurately be adjusted, also stop continuing to adjust at this time.Similarly, When the third distance between the first axial position and third axial position is less than minimum adjustable distance, actually also cannot It is accurately adjusted, then stops continuing to adjust.Or adds up to execute number and be greater than or equal to the when the 4th of step S823a When two preset times, that is, after the adjustment repeatedly after, then stop continuing to adjust, to improve adjusting efficiency, it is repeatedly invalid to avoid It repeats.

Based on above-mentioned 9th embodiment, in the tenth embodiment of the present invention, is executed in last time and adjust the first lens It is further comprising the steps of to after the step of the first axial position：

Step S824a, according to default step-length and preset direction, the 4th axial position of the first lens in the direction of the optical axis is determined It sets, and adjusts the first lens to the 4th axial position；

Step S824b, when the first lens of acquisition are located at four axial positions, the 4th size of the first hot spot；

Step S824c, before and after adjusting the first lens to the 4th axial position, the spot size of the first hot spot is from large to small When the first lens moving direction in the direction of the optical axis, as updated preset direction；

Step S824d：S824a is returned to step, until the number of accumulative the 4th size obtained is greater than or equal in advance If number；

Step S824e, it according to each 4th axial position of the first lens and corresponding 4th size, determines updated Relationship between the spot size and image-forming range of mirror；

Step S824f, according to the relationship between the spot size and image-forming range of updated lens, the first lens are determined The 5th axial position in the direction of the optical axis, and adjust the first lens to the 5th axial position；

Step S825, when the first lens of acquisition are located at five axial positions, the 5th size of the first hot spot；

Step S826, determine in first size, the second size, third size, the 4th size and the 5th size second most First lens position in the direction of the optical axis when the spot size of first hot spot is the second minimum spot size by small luminous spot dimension It sets, as the focal position of the first lens, and adjusts the first lens to focal position.

In order to advanced optimize the focal position of the first lens 121, based on the specific light path that this is adjusted, to therein Relationship between the spot size and image-forming range of first lens 121 is fitted, and determines image-forming range according to fitting result, And then determine more accurate focal position.In fit procedure, measurement point is acquired according to default step-length and preset direction, it is each to measure The specific parameter that point is sampled includes the 4th size of the 4th axial position and the first hot spot.It should be noted that measurement point Position be not acquired according to single preset direction, but according to this sampling in the direction of spot size from large to small, It determines preset direction, the measurement point of acquisition is enable to include the range of spot size minimum as far as possible, until the measurement point of acquisition Number reach preset number N.Default step-length δ can take 2*d₀Smaller value between/(N-1) and minimum adjustable distance, wherein d₀To be fitted total size.In some cases, possibly preset direction can not be determined in the manner described above, then according to existing lens Spot size and image-forming range between relationship, take the measurement of certain amount respectively in the measurement point both sides of spot size minimum Point, the relationship between spot size and image-forming range are fitted.The 4th axial distance to preset number and corresponding Four sizes are fitted, and obtain the relationship between the spot size R of updated lens and image-forming range Z, herein, can be adopted Use R=aZ²The parabolic relation of+bZ+c is fitted.According between the spot size and image-forming range of updated lens Relationship determines the 5th axial position of the first lens in the direction of the optical axis, and adjusting 121 to the 5th axial position of the first lens, The 5th size, ideally of the first hot spot is obtained, the 5th axial position is focal position, and the 5th size is the first light The minimum dimension of spot.However, it is contemplated that the factors such as disturbance in adjustment process, in order to further verify the poly- of the first lens 121 Burnt position, determine in first size, the second size, third size, the 4th size and the 5th size of above-mentioned gained second most First lens position in the direction of the optical axis when the spot size of first hot spot is the second minimum spot size by small luminous spot dimension It sets, as the focal position of the first lens, and adjusts the first lens to focal position, to complete the focus adjustment of this light path.

Based on the various embodiments described above, in the 11st embodiment of the present invention, after step S820, light path regulating method It is further comprising the steps of：

Step S830, the position of the first lens and the second lens in the plane perpendicular to optical axis is adjusted, so that the first one-tenth The third hot spot formed on variable mirror as light beam is located in the third preset range of variable mirror, the second imaging beam The 4th hot spot formed on variable mirror is located in the 4th preset range of variable mirror；

Wherein, third preset range is less than or equal to the first preset range, and it is pre- that the 4th preset range is less than or equal to second If range.During adjusting each light path, the position of imaging beam and the focusing of imaging beam generally require alternately to adjust, with Gradually close to optimum state.After being namely focused to light path, the change of facula position is may result in, is needed again to hot spot Position is finely adjusted, and keeps the third that the third hot spot that the first imaging beam is formed on variable mirror is located at variable mirror pre- If in range, the 4th hot spot that the second imaging beam is formed on variable mirror is located at the 4th preset range of variable mirror It is interior, to improve light path.

Based on the various embodiments described above, in the 12nd embodiment of the present invention, step S721 includes：

Step S721a, when the first angle be less than or equal to predetermined angle, and first distance be less than or equal to pre-determined distance When, obtain the 6th size of the first hot spot and the seven foot cun of the second hot spot；

Step S721b, the 6th size and the first pre-set dimension and seven foot cun and the second pre-set dimension are compared；

Step S721c, when the 6th size is less than or equal to the first pre-set dimension, and to be less than or equal to second pre- for seven foot cun If when size, terminating this optical path adjusting；

Step S721d, it when the 6th size is more than the first pre-set dimension or seven foot cun is more than the second pre-set dimension, adjusts The position of the first lens and the second lens in the direction of the optical axis is saved, so that the first imaging beam focuses on imaging plane, the second one-tenth As light beam focuses on imaging plane.

It, may be poly- to it due to when adjusting the adjusting of each imaging beam, actually having finely tuned the position of imaging beam Burnt situation impacts.Therefore, it after the synthesis for carrying out each imaging beam is adjusted, needs to continue to carry out the focus condition of light beam Verification and adjusting, so that final imaging disclosure satisfy that requirement.

The present invention also proposes a kind of light path regulating device, for adjusting the light path in optical device, as shown in Figure 1, at this In one embodiment of invention, optical device includes first light source 111, second light source 112, the first lens 121 and the second lens 122, the first lens 121 are located on the emitting light path of first light source 111, and the second lens 122 are located at the emergent light of second light source 112 On the road.

Specifically, the optical device 100 in the present embodiment can be micro-projector, in order to realize colour projection, micro- projection The first light source 111 for corresponding to green, red, blue three kinds of coloured light respectively, second light source 112 and third light source 113 are typically provided in instrument, it is right Each light source is answered to be respectively provided with the first light path, the second light path and third light path, and each light channel structure is substantially similar.It is micro- in order to reduce Space shared by the optical devices such as projecting apparatus, can be anti-first to be respectively set in the first light path, the second light path and third light path Mirror 141, the second speculum 142 and third speculum 143 etc. are penetrated, to change the direction of propagation of light, improves the sky in optical device Between utilization rate.When adjusting micro-projector, mainly by adjusting each lens in the first light path, the second light path and third light path, The position for specifically including the first lens 121, the second lens 122 and the third lens 123, enables green, red, blue three color light being imaged Colour projection's image is synthesized in plane.It should be noted that lens here can be single lens, can also be that can expire The lens group of the certain imaging requirements of foot can refer to the regulative mode of lens group the adjusting side of single lens when adjusting light path Formula, to realize the synthesis of imaging beam in different light paths.

Further, light path regulating device includes the first image-forming assembly 222, drive component, memory, processor and storage On a memory and the optical path adjusting program that can run on a processor, wherein：First image-forming assembly 220 is located at the first lens On 121 emitting light path, and the first image-forming assembly 220 is located on the emitting light path of the second lens 122, the first image-forming assembly 220 To receive the first hot spot and the second hot spot；Drive component is connected with the first lens 121 and the second lens 122, and drive component is used To adjust the position of the position and the second lens 122 of the first lens 121.Drive component can specifically include stepper motor and transmission System, transmission system connection stepper motor and each lens can realize the automatic change of lens position by drive component, into And realize that the automation of light path is adjusted, so as to avoid it is manual adjust inefficiency, accuracy rate is poor the problems such as.

Further, as shown in Figure 1, optical device further includes variable mirror 130, variable mirror 130 is located at first On the emitting light path of lens 121, and variable mirror 130 is located on the emitting light path of the second lens 122.In micro-projector, Variable mirror 130 generally includes MEMS (MEMS), to realize the projection of various images.

Light path regulating device further includes beam splitter 210 and the second image-forming assembly 230, and beam splitter 210 is located at variable mirror On 130 emitting light path, the first image-forming assembly 220 is located on the first emitting light path of beam splitter 210；Second image-forming assembly 230 On the second emitting light path of beam splitter 210, the second image-forming assembly 230 is receiving the first hot spot and the second hot spot.Specifically , each imaging beam is divided into two bundles by beam splitter 210, to receive imaging facula, convenient for respectively adjust imaging beam position and It focuses.First image-forming assembly 220 includes holographic diffusion screen 221 and focus calibration camera 222, is formed to receive imaging beam Imaging facula, pass through to change lens position in the direction of the optical axis and adjust and focus；Second image-forming assembly 230 includes conjugated lens 231 and position correction camera 232, to receive the imaging facula of imaging beam formation, by changing lens in vertical optical axis side To plane on position to adjust the position of imaging beam, to improve imaging effect.

Processor can call the optical path adjusting program stored in memory, and execute following operation：

According to first offset and second offset, third offset is determined；

Processor can call the optical path adjusting program stored in memory, compare first angle and preset angle After the operation of degree and first distance and pre-determined distance, following operation is also executed：

Processor can call the optical path adjusting program stored in memory, according to first angle, determine described The operation of first offset of two lens in the plane perpendicular to optical axis includes：

Compare first angle α_iWith the predetermined angle α₀；

Processor can call the optical path adjusting program stored in memory, according to first distance, determine described The operation of second offset of two lens in the plane perpendicular to optical axis includes：

Compare first distance beta_jWith the pre-determined distance β₀；

Processor can call the optical path adjusting program stored in memory, according to first offset and described second Offset determines that the operation of third offset includes：

It further includes Variable reflectance that processor, which can call the optical path adjusting program stored in memory, the optical device, Mirror, the variable mirror are located on the emitting light path of first lens, and the variable mirror is located at described second thoroughly On the emitting light path of mirror；

Before the operation for executing the first angle between the first imaging beam of the acquisition and the second imaging beam for the first time, Also execute following operation：

Processor can call the optical path adjusting program stored in memory, adjust first lens perpendicular to optical axis Plane on position so that the third hot spot that is formed on the variable mirror of first imaging beam be located at it is described can Become speculum the first preset range in operation include：

Processor can call the optical path adjusting program stored in memory, adjust first lens in the direction of the optical axis Position so that the operation that first imaging beam focuses on the imaging plane includes：

Processor can call the optical path adjusting program stored in memory, and described described the is adjusted executing for the last time After one lens to the operation of the first axial position, following operation is also executed：

Processor can call the optical path adjusting program stored in memory, adjust first lens and described second Position of the lens on the optical axis direction, so that first imaging beam focuses on the imaging plane, it is the second one-tenth described It is focused on as light beam after the operation of the imaging plane, also executes following operation：

Processor can call the optical path adjusting program stored in memory, when first angle is less than or equal to described Predetermined angle, and it is described first distance be less than or equal to the pre-determined distance when, the operation for terminating this optical path adjusting includes：

The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly In the scope of patent protection that other related technical areas are included in the present invention.

Claims

1. a kind of light path regulating method, for adjusting the light path in optical device, which is characterized in that the optical device includes the One light source, second light source, the first lens and the second lens, first lens are located on the emitting light path of the first light source, Second lens are located on the emitting light path of the second light source；

The light path regulating method includes the following steps：

Obtain the first angle between the first imaging beam and the second imaging beam, wherein first imaging beam derives from The first light source, second imaging beam derive from the second light source；

Obtain the first distance between the position and the position of the second hot spot of the first hot spot on imaging plane, wherein described first Hot spot is formed by first imaging beam on the imaging plane, and second hot spot is by second imaging beam in institute It states and is formed on imaging plane；

According to first offset and second offset, third offset is determined；

Position of second lens in the plane perpendicular to optical axis is adjusted according to the third offset, to reduce described One angle and first distance；

When first angle be less than or equal to the predetermined angle, and it is described first distance be less than or equal to the pre-determined distance When, terminate this optical path adjusting.

2. light path regulating method as described in claim 1, which is characterized in that first angle and predetermined angle are compared, with And after the step of first distance and pre-determined distance, the light path regulating method is further comprising the steps of：

When first angle is more than the predetermined angle or first distance is more than the pre-determined distance, returns and execute The step of first angle obtained between the first imaging beam and the second imaging beam；Or,

When first angle is more than the predetermined angle or first distance is more than the pre-determined distance, described in determination Compare first angle and predetermined angle, first the step of first distance and pre-determined distance is accumulative to execute number；

When the described first accumulative execution number is less than first preset times, returns and execute the first imaging beam of the acquisition The step of the first angle between the second imaging beam；

When the described first accumulative execution number is greater than or equal to the first preset times, stop this optical path adjusting, and generate and carry Show signal.

3. light path regulating method as described in claim 1, which is characterized in that according to first angle, determine described second Lens include in the step of the first offset in the plane perpendicular to optical axis：

The second of the step of determining the first angle between the first imaging beam of the acquisition and the second imaging beam is accumulative to be executed Number i, first angle that note ith obtains is α_i；

Compare first angle α_iWith the predetermined angle α₀；

When first angle α_iMore than the predetermined angle α₀, and described second is accumulative when executing number i and being more than 1, according to k1_i =α_i/D1_i-1-k1_i-1First adjustment factor k1 of the second lens described in calculating when the second accumulative execution number is i_i；

When first angle α_iMore than the predetermined angle α₀, and described second is accumulative when executing number i and being equal to 1, according to D1₁ =α₁/k1₁First offset D1 of the second lens described in calculating when the second cumulative number is 1₁；

4. light path regulating method as described in claim 1, which is characterized in that according to first distance, determine described second Lens include in the step of the second offset in the plane perpendicular to optical axis：

Determine it is described acquisition imaging plane on the first hot spot position and the position of the second hot spot between first apart from the step of Third it is accumulative execute number j, first distance that note jth time obtains is β_j；

Compare first distance beta_jWith the pre-determined distance β₀；

When first distance beta_jMore than the pre-determined distance β₀, and the third is accumulative when executing number j and being more than 1, according to k2_j =(β_j-β_j-1)/D2_j-1Second adjustment factor k2 of the second lens described in calculating when the accumulative execution number of third is j_j；

When first distance beta_jMore than the pre-determined distance β₀, and the third is accumulative when executing number j and being equal to 1, according to D2₁ =β₁/k2₁Second offset D2 of the second lens described in calculating when the accumulative execution number of third is 1₁；

5. light path regulating method as described in claim 1, which is characterized in that partially according to first offset and described second Shifting amount, the step of determining third offset include：

According to first offset, obtains first position of second lens in the plane perpendicular to optical axis and adjust model It encloses；

According to second offset, obtains the second position of second lens in the plane perpendicular to optical axis and adjust model It encloses；

The center for determining the overlapping region of first adjustable range and second adjustable range, will be in the overlapping region Offset corresponding to the heart is as the third offset.

6. the light path regulating method as described in any one of claim 1 to 5, which is characterized in that the optical device further includes Variable mirror, the variable mirror is located on the emitting light path of first lens, and the variable mirror is located at institute On the emitting light path for stating the second lens；

It is described before the step of executing the first angle between the first imaging beam of the acquisition and the second imaging beam for the first time Light path regulating method is further comprising the steps of：

The position of first lens and second lens in the plane perpendicular to optical axis is adjusted, so that first imaging The third hot spot that light beam is formed on the variable mirror is located in the first preset range of the variable mirror, and described The 4th hot spot that two imaging beams are formed on the variable mirror is located in the second preset range of the variable mirror；

The position of first lens and second lens on the optical axis direction is adjusted, so that first imaging beam The imaging plane is focused on, second imaging beam focuses on the imaging plane.

7. light path regulating method as claimed in claim 6, which is characterized in that adjust first lens perpendicular to optical axis Position in plane, so that the third hot spot that first imaging beam is formed on the variable mirror is located at described can be changed Step in first preset range of speculum includes：

First lens are placed in except the light path of the optical device, the first light source is controlled and irradiates the Variable reflectance Mirror, and obtain the first image that the variable mirror is formed on the imaging plane；

According to described first image, the first preset range corresponding first object range on the imaging plane is obtained；

According to the position of the first object range and first hot spot, the 4th offset of first lens is determined；

8. light path regulating method as claimed in claim 6, which is characterized in that adjust first lens in the direction of the optical axis Position, so that first imaging beam includes the step of focusing on the imaging plane：

According to the relationship between the spot size and image-forming range, the first axle of first lens in the direction of the optical axis is determined To position, and first lens are adjusted to the first axial position；

According to the relationship between the first size and the spot size and image-forming range, determine first lens in optical axis The second axial position on direction and third axial position；

First lens are adjusted to the second axial position, and obtains first lens and is located at the second axial position When, the second size of first hot spot；

First lens are adjusted to the third axial position, and obtains first lens and is located at the third axial position When, the third size of first hot spot；

The first minimum spot size in the first size, second size and the third size is determined, by described The position of first lens in the direction of the optical axis described in when the spot size of one hot spot is the first minimum spot size, after update The first axial position, and adjust first lens to the first axial position；

Return to described when obtaining first lens and being located at the first axial position, the step of the first size of first hot spot Suddenly, until when time minimum spot size of acquisition is greater than or equal to the minimum spot size of previous acquisition or the first axis Second distance between position and the second axial position is less than minimum adjustable distance or the first axial position and described Third distance between third axial position is less than minimum adjustable distance or acquisition first lens are located at described first When axial position, the 4th accumulative number that the executes the step of first size of first hot spot is greater than or equal to second default time Number.

9. light path regulating method as claimed in claim 8, which is characterized in that executing the adjusting described first for the last time It is further comprising the steps of after the step of lens to the first axial position：

According to default step-length and preset direction, the 4th axial position of first lens in the direction of the optical axis is determined, and adjust First lens are to the 4th axial position；

Before and after first lens to the 4th axial position will be adjusted, the spot size of first hot spot from large to small when The moving direction of first lens in the direction of the optical axis, as updated preset direction；

It is described according to default step-length and preset direction to return to execution, determines the 4th axial direction of first lens in the direction of the optical axis Position, and the step of first lens are to four axial position is adjusted, until accumulative the 4th size obtained Number is greater than or equal to preset number；

According to each 4th axial position of first lens and corresponding 4th size, the light of updated lens is determined Relationship between spot size and image-forming range；

According to the relationship between the spot size and image-forming range of updated lens, determine first lens in optical axis direction On the 5th axial position, and adjust first lens to the 5th axial position；

It determines in the first size, second size, the third size, the 4th size and the 5th size Second minimum spot size, by the spot size of first hot spot be the second minimum spot size when described in the first lens in light Position in axis direction as the focal position of first lens, and adjusts first lens to the focal position.

10. light path regulating method as claimed in claim 6, which is characterized in that adjusting first lens and described second Position of the lens on the optical axis direction, so that first imaging beam focuses on the imaging plane, it is the second one-tenth described After the step of focusing on the imaging plane as light beam, the light path regulating method is further comprising the steps of：

The position of first lens and second lens in the plane perpendicular to optical axis is adjusted, so that first imaging The third hot spot that light beam is formed on the variable mirror is located in the third preset range of the variable mirror, and described The 4th hot spot that two imaging beams are formed on the variable mirror is located in the 4th preset range of the variable mirror；

Wherein, the third preset range is less than or equal to first preset range, and the 4th preset range is less than or waits In second preset range.

11. light path regulating method as described in claim 1, which is characterized in that described in being less than or equal to when first angle Predetermined angle, and described first includes apart from the step of when being less than or equal to the pre-determined distance, terminating this optical path adjusting：

When first angle be less than or equal to the predetermined angle, and it is described first distance be less than or equal to the pre-determined distance When, obtain the 6th size of first hot spot and the seven foot cun of second hot spot；

When the 6th size is less than or equal to first pre-set dimension, and the seven foot cun is less than or equal to described second When pre-set dimension, terminate this optical path adjusting；

When the 6th size is more than first pre-set dimension or the seven foot cun is more than second pre-set dimension, The position of first lens and second lens on the optical axis direction is adjusted, so that first imaging beam focuses In the imaging plane, second imaging beam focuses on the imaging plane.

12. a kind of light path regulating device, for adjusting the light path in optical device, which is characterized in that the optical device includes First light source, second light source, the first lens and the second lens, first lens are located at the emitting light path of the first light source On, second lens are located on the emitting light path of the second light source；

The light path regulating device includes the first image-forming assembly, drive component, memory, processor and is stored in the memory Optical path adjusting program that is upper and can running on the processor, wherein：

First image-forming assembly is located on the emitting light path of first lens, and first image-forming assembly is located at described the On the emitting light path of two lens, first image-forming assembly is receiving first hot spot and second hot spot；

The driving component is connected with first lens and second lens, and the driving component is adjusting described first The position of the position of lens and second lens；

The light path tune as described in any one of claim 1 to 11 is realized when the optical path adjusting program is executed by the processor The step of section method.

13. light path regulating device as claimed in claim 12, which is characterized in that the optical device further includes Variable reflectance Mirror, the variable mirror are located on the emitting light path of first lens, and the variable mirror is located at described second thoroughly On the emitting light path of mirror；

The light path regulating device further includes：

Beam splitter, the beam splitter are located on the emitting light path of the variable mirror, and first image-forming assembly is located at described On first emitting light path of beam splitter；

Second image-forming assembly, second image-forming assembly are located on the second emitting light path of the beam splitter, second imaging Component is receiving first hot spot and second hot spot.

14. light path regulating device as claimed in claim 13, which is characterized in that first image-forming assembly includes holographic spreads Screen and focus calibration camera；

Second image-forming assembly includes conjugated lens and position correction camera.