WO2021184922A1 - 一种光源标定方法及光源标定装置 - Google Patents

一种光源标定方法及光源标定装置 Download PDF

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Publication number
WO2021184922A1
WO2021184922A1 PCT/CN2020/142135 CN2020142135W WO2021184922A1 WO 2021184922 A1 WO2021184922 A1 WO 2021184922A1 CN 2020142135 W CN2020142135 W CN 2020142135W WO 2021184922 A1 WO2021184922 A1 WO 2021184922A1
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Prior art keywords
light
light source
delivery system
modulator
spatial
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PCT/CN2020/142135
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English (en)
French (fr)
Inventor
张贤鹏
吴超
陈孟浩
赵鹏
李屹
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3138—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using arrays of modulated light sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3191—Testing thereof

Definitions

  • This application relates to the field of display technology, in particular to a light source calibration method and a light source calibration device.
  • the optical machine system used in projection can project uniform light or array light onto the light source onto the spatial light modulator, but due to the inherent aberration and stretching effect of the optical system, the light distribution on the spatial light modulator is often compared There is distortion at the light source.
  • the distortion of the optomechanical system will cause the original horizontal and vertical array of light sources to be deformed.
  • Figure 1(a) is a grid diagram. Assuming that a light source is placed at each intersection, the light source If the optical-mechanical system has pincushion distortion, the grid diagram after passing through the optical-mechanical system is shown in Figure 1(b). If the optical-mechanical system has barrel-shaped distortion, the grid after passing through the optical-mechanical system The grid diagram is shown in Figure 1(c), and the illumination distribution formed by a single sub-light source is no longer uniform and regular.
  • FIG. 2 is a schematic diagram of the DMD illumination.
  • a and B are the two beams incident on the DMD, which are incident on the two edges of the DMD respectively.
  • the normal direction of the light is not consistent with the light direction, which will cause the light path of the light A and the light B to be not equal.
  • the light beams of the two sub-light sources reach the DMD through different light paths.
  • a flat surface will cause the beam sizes of the two sub-light sources to be inconsistent.
  • the light spot on the DMD will be stretched to a certain extent in the vertical direction.
  • the present application provides a light source calibration method and a light source calibration device, which can make the light beam emitted by the spatial light modulator neat and uniform, and offset the illumination degradation caused by the light transmission system and the spatial light modulator.
  • the technical solution adopted in this application is to provide a light source calibration method based on an optical simulation design system.
  • the method includes: receiving an optical machine configuration instruction, and configuring on the simulation design interface according to the optical machine configuration instruction The icon corresponding to the opto-mechanical system.
  • the opto-mechanical system includes a light delivery system and a spatial light modulator; receives the first setting instruction, and configures a reference array light source with reverse and uniform light emission at the light output position of the spatial light modulator; the analog calculation reference array light source emits After the reference beam passes through the spatial light modulator and the light delivery system in turn, the light distribution information at the reference entrance of the light delivery system; according to the light distribution information, the light source configuration prompt information is displayed at the reference entrance of the light delivery system.
  • the technical solution adopted in this application is to provide a light source calibration device.
  • the light source calibration device includes a memory and a processor connected to each other.
  • the memory is used to store a computer program.
  • the computer program is executed by the processor, Used to realize the above-mentioned light source calibration method.
  • the beneficial effect of the present application is that the reference array light source is set at the light output position of the spatial light modulator, and by controlling the reference array light source, how to set the array light source can make the light beam emitted by the array light source pass through the light transmission system and the space in turn.
  • the distribution is uniform and consistent.
  • the distribution of the light source itself is uneven and tidy, but the light beam emitted by the spatial light modulator is neat and uniform, and the shape and position distribution of the light beam are consistent. And it is simple to implement, and can solve the problem of illumination degradation caused by the light delivery system and the spatial light modulator.
  • Figure 1(a) is a grid diagram of an ideal array light source
  • Figure 1(b) is a grid diagram of an array light source corresponding to pincushion distortion
  • Figure 1(c) is a grid diagram of the array light source corresponding to barrel distortion
  • Figure 2 is a schematic diagram of DMD lighting
  • FIG. 3 is a schematic flowchart of an embodiment of a light source calibration method provided by the present application.
  • FIG. 4 is a schematic diagram of the structure of the optical-mechanical system in the embodiment shown in FIG. 3;
  • FIG. 5 is a schematic flowchart of another embodiment of a light source calibration method provided by the present application.
  • Fig. 6(a) is a schematic structural diagram of the optical-mechanical system in the embodiment shown in Fig. 5;
  • Fig. 6(b) is a schematic cross-sectional view of the array light source in the embodiment shown in Fig. 6(a);
  • Fig. 6(c) is a schematic diagram of the arrangement of light beams emitted by the spatial light modulator in the embodiment shown in Fig. 6(a);
  • FIG. 7 is another structural schematic diagram of the optical-mechanical system in the embodiment shown in FIG. 5;
  • FIG. 8 is a schematic structural diagram of an embodiment of a light source calibration device provided by the present application.
  • Partial backlight adjustment projectors need to realize arrayed and individually adjustable lighting on the spatial light modulator.
  • the ideal lighting should have a neat array arrangement, high consistency between the light sources, and the shape of the light source and the difference between the light sources.
  • the overlapping conditions are all controllable; from the array light source to the spatial light modulator, the light beam needs to pass through some optical elements (such as lenses, prisms, etc.) in the optical machine. Due to the inevitable aberrations and distortions of the light transmission system, And there are often some stretching effects, making the originally neatly arranged and uniformly sized array light sources on the spatial light modulator to become unevenly arranged, and the shapes and intensities are also different, which affects the effect of local backlight adjustment. .
  • Figure 3 is a schematic flow diagram of an embodiment of a light source calibration method provided by the present application
  • Figure 4 is a schematic structural diagram of an optical-mechanical system in the embodiment shown in Figure 3, which is based on an optical simulation design system , The method includes:
  • Step 11 Receive the optical machine configuration instruction, and configure the icon corresponding to the optical machine system on the simulation design interface according to the optical machine configuration instruction.
  • the optical-mechanical configuration instruction can be a command generated by the user operating on the simulation design interface.
  • the optical-mechanical system includes a light delivery system 11 and a spatial light modulator 12. After receiving the optical-mechanical configuration instruction, the light source calibration device can perform simulation design The corresponding positions of the interface display the light delivery system 11 and the spatial light modulator 12.
  • the light delivery system 11 includes but is not limited to elements such as prisms, lenses, or mirrors.
  • Step 12 Receive the first setting instruction, and configure the reference array light source with reverse and uniform light emission at the light output position of the spatial light modulator.
  • the light source calibration device can display the spatial light modulator on the simulation design interface An icon of the reference array light source 13 is displayed in the light emitting direction of the reference array light source 13, the reference array light source 13 can emit light uniformly, and the light emitted by the reference array light source 13 can be injected into the spatial light modulator 12.
  • Step 13 Simulate and calculate the light distribution information at the reference entrance of the light delivery system after the reference beam emitted by the reference array light source sequentially passes through the spatial light modulator and the light delivery system.
  • the light beam emitted by the reference array light source 13 can pass through the spatial light modulator 12.
  • the spatial light modulator 12 can modulate the reference light beam emitted by the reference array light source 13 and output the modulated light beam to the light transmission System 11, the light delivery system 11 can process and emit the modulated light beam, and can perform statistics on the light emitted by the light delivery system 11, so as to obtain the light distribution information at the reference entrance of the light delivery system 11.
  • the reference entrance is The side away from the spatial light modulator 12.
  • Step 14 Display the light source configuration prompt information at the reference entrance of the light delivery system according to the light distribution information.
  • the light distribution information can be used to display the light source configuration information on the simulation design interface.
  • the light source configuration prompt information includes the position information of the light source to remind the user to place the light source at the set position, so that the light source emits After passing through the light delivery system 11 and the spatial light modulator 12, the light beams emit uniform light beams.
  • the reference array light source 13 includes a plurality of illumination light cones. As shown in FIG. The light delivery system 11 is tracked to obtain the illumination positions 15a-15c, and the light source is set according to these positions, which can greatly offset the illumination degradation caused by the light delivery system 11 and the spatial light modulator 12.
  • This embodiment provides an array lighting design that can be applied to local backlight adjustment.
  • the light beam reverse tracking method is adopted.
  • a reference array light source 13 is set at the light output position of the spatial light modulator 12.
  • By controlling the reference array light source 13 Introduce how to set up the light source so that the light beam emitted by the light source passes through the light transmission system 11 and the spatial light modulator 12 and then distributes uniformly and consistently.
  • the arrangement of the light sources is made The pre-adjustment makes the distribution of the light source itself uneven and tidy, but the light beam emitted by the spatial light modulator 12 is tidy and uniform, the shape and position distribution of the light beam are more consistent, and the implementation is simple.
  • FIG. 5 is a schematic flowchart of another embodiment of a light source calibration method provided by the present application
  • FIG. 6 is a schematic structural diagram of an optical-mechanical system in the embodiment shown in FIG. 5.
  • the method is based on optical simulation design System, the method includes:
  • Step 21 After receiving the optical machine configuration instruction, configure the icon of the light delivery system at the first preset position on the simulation design interface, and configure the icon of the spatial light modulator at the second preset position on the simulation design interface. Set location.
  • the icon corresponding to the optical machine system includes the icon of the optical delivery system 21 and the icon of the spatial light modulator 22.
  • the optical machine configuration instruction includes the first preset position and the second preset position, and the second preset position is in the optical delivery system 21. In the direction of the light.
  • the light source calibration device After the light source calibration device receives the optical machine configuration instruction generated by the user operating the optical simulation design system, it can place the light delivery system 21 and the spatial light modulator 22 in the first preset position and the second preset position of the simulation design interface, respectively. At the preset position.
  • Step 22 Receive the first setting instruction, and configure the reference array light source with reverse uniform light emission at the light output position of the spatial light modulator.
  • Step 23 Receive a first lighting instruction, and control the reference array light source to generate a reference beam according to the first lighting instruction.
  • the user can click the switch on the reference array light source or the start button on the simulation design interface to make the reference array light source emit the reference beam.
  • Step 24 Count the positions of the light beams emitted from the light delivery system to obtain light distribution information.
  • the output position of the reference beam can be counted to obtain light distribution information.
  • the light distribution information may include the position of the emitted light beam and the exit angle.
  • Step 25 Display the light source configuration prompt information at the reference entrance of the light delivery system according to the light distribution information.
  • the light source calibration device can generate light source configuration prompt information according to the position and exit angle of the emitted light beam.
  • the light source configuration prompt information can be automatically adjusted according to the distance between the array light source 23 and the light delivery system 21, It reminds the user where the array light source 23 needs to be placed in real time.
  • Step 26 Receive a light source removal instruction, and remove the reference array light source from the third preset position.
  • the reference array light source is located at the third preset position of the simulation design interface. After obtaining the light source configuration prompt information, since the reference array light source is no longer needed, the reference array light source can be removed from the simulation design interface.
  • Step 27 Receive the second light source setting instruction, and configure the array light source on the simulation design interface according to the light source configuration prompt information.
  • the light source configuration prompt information includes position information.
  • the array light source 23 includes a plurality of light-emitting units, and the position of each light-emitting unit corresponds to the position information.
  • the light-emitting unit may be an array laser or LED (Light Emitting Diode) with uniform light design ), it can also be an array square rod or a square fiber; after generating the light source configuration prompt information, the user can operate the optical simulation design system to place the light-emitting unit on the simulation design interface, thereby generating a second light source setting instruction, After receiving the second light source setting instruction, the light source calibration device displays the light emitting unit in the corresponding position of the simulation design interface.
  • LED Light Emitting Diode
  • Step 28 Receive a second light-emitting instruction, and control the array light source to generate a light beam according to the second light-emitting instruction.
  • the light source calibration device can receive the second light-emitting instruction generated by the user operating the optical simulation design system, and then control the array light source to generate a light beam, and the light beam sequentially passes through the light delivery system 21 and the spatial light modulator 22, and The light spots corresponding to the light beams emitted by the spatial light modulator 22 are uniformly distributed and have the same size and shape.
  • the array light source 23 includes a plurality of square optical fibers
  • FIG. 6(b) is a cross section of the array light source 23
  • the spatial light modulator 22 is a DMD (Digital Micromirror Device, Digital micromirror device)
  • the optomechanical system also includes a reflection component 24, which can be a TIR (Total Internal Reflection) prism; the light source calibration device can receive the third setting instruction, and the light transmission system is displayed on the simulation design interface
  • a reflection component is configured in the light exit direction of 21 to reflect the light beam emitted by the light delivery system 21 to the spatial light modulator 22.
  • the arrangement of the opposite fiber has been adjusted in advance.
  • the position of the square fiber in each row is slightly misaligned, which is used to compensate for the stretching effect caused by the inconsistency between the normal line of the DMD and the main direction of the incident light; the exit position of the square fiber is misaligned before and after , Used to make up for the difference in spot size caused by the different optical path differences and field curvature of the points on the DMD plane.
  • the final DMD output illumination is shown in Figure 6(c), the arrangement is more orderly and the consistency is better.
  • the optomechanical system further includes a liquid crystal on silicon (LCOS, Liquid Crystal on Silicon) 25 and a polarization beam splitter (PBS) device 26, and a light source calibration device
  • LCOS liquid crystal on silicon
  • PBS polarization beam splitter
  • the LCOS device 25 can be arranged on the optical path of the beam emitted by the spatial light modulator 22 to process the beam emitted by the spatial light modulator 22 to generate an optical image.
  • the PBS device 26 can be combined with the LCOS
  • the device 25 cooperates to process the light beam output by the light delivery system 21.
  • the arrangement position of the array light source 23 is obtained, so that the light beam emitted by the DMD is neat and uniform.
  • This embodiment provides an optical correction method.
  • a non-uniform and non-orderly arranged array light source 23 is obtained, so that the illumination emitted by the spatial light modulator 22 is optimized.
  • the overall uniform emission light is obtained, the optical efficiency is relatively high, and the energy loss is minimal.
  • FIG. 8 is a schematic structural diagram of an embodiment of a light source calibration device provided by the present application.
  • the light source calibration device 80 includes a memory 81 and a processor 82 that are connected to each other.
  • the memory 81 is used to store computer programs that are being processed.
  • the device 82 is used to implement the light source calibration method in the foregoing embodiment.
  • the light source calibration device 80 uses reverse tracing to adjust the arrangement of the array light sources in advance, so that the incident light beams are uneven and neat, but the shape and position distribution of the outgoing light beams are more consistent.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

本申请公开了一种光源标定方法及光源标定装置，该方法基于光学仿真设计系统，该方法包括：接收光机配置指令，根据光机配置指令在仿真设计界面上配置光机系统对应的图标，光机系统包括光传递系统和空间光调制器；接收第一设置指令，在空间光调制器的出光位置配置反向均匀发光的参考阵列光源；模拟计算参考阵列光源发出的参考光束依次经过空间光调制器和光传递系统后，在光传递系统的参考入口处的光分布信息；根据光分布信息在光传递系统的参考入口处显示光源配置提示信息。通过上述方式，本申请能够使得空间光调制器出射的光束整齐且均匀，抵消光传递系统与空间光调制器带来的照明劣化。

Description

一种光源标定方法及光源标定装置 技术领域
本申请涉及显示技术领域，具体涉及一种光源标定方法及光源标定装置。
背景技术
投影中使用的光机系统可将均匀光或阵列光投射到光源到空间光调制器上，但是由于光学系统固有的像差和拉伸效应，往往会使得空间光调制器上的光照分布相较于光源处存在变形。光机系统的畸变会使得原本横平竖直分布的阵列光源出现变形，例如，如图1所示，图1(a)为一个网格图，假设在每个交叉点上放置一个光源，则光源之间等距规则分布，若光机系统存在枕形畸变，则经过光机系统之后网格图如图1(b)所示，若光机系统存在桶形畸变，则经过光机系统之后网格图如图1(c)所示，单个子光源所形成的照明分布也不再均匀规则。
除了光机系统本身的像差导致的照明变形以外，入射光与空间光调制器存在夹角也会导致照明系统的变形，例如在数字微镜器件(DMD，Digital Micro Mirror Device)系统中，入射照明光的主光线与DMD往往需要有24度或34度的夹角，图2为DMD照明的示意图，A和B是入射至DMD的两个光束，分别入射至DMD的两个边缘，由于DMD的法线方向与光线方向并不一致，会导致光线A和光线B经过的光程并不相等，如果光线A与光线B分别来自两个子光源，则两个子光源的光束经过不同的光程到达DMD平面，会导致两个子光源的光束大小不一致，此外由于DMD法线与光线方向不一致，还会导致DMD上的光斑在竖直方向上存在一定的拉伸。
像差和拉伸效应都会导致原本均匀整齐分布、一致性良好的阵列光源在空间光调制器上的照明出现分布不均匀、不整齐以及大小形状不一致等现象，极大的影响局部背光调节(Local Dimming)的效果。目前可以使用 算法对光源的亮度进行控制以降低光机系统的不良影响，该方法需要记录每个光源在空间光调制器上的照明分布，再根据这些照明分布分析控制算法，导致算法端的压力较大，需要算力较强的硬件支持，否则会影响算法的实时性，并且这种算法上的修正会导致光学效率下降。
发明内容
本申请提供一种光源标定方法及光源标定装置，能够使得空间光调制器出射的光束整齐且均匀，抵消光传递系统与空间光调制器带来的照明劣化。
为解决上述技术问题，本申请采用的技术方案是：提供一种光源标定方法，该方法基于光学仿真设计系统，该方法包括：接收光机配置指令，根据光机配置指令在仿真设计界面上配置光机系统对应的图标，光机系统包括光传递系统和空间光调制器；接收第一设置指令，在空间光调制器的出光位置配置反向均匀发光的参考阵列光源；模拟计算参考阵列光源发出的参考光束依次经过空间光调制器和光传递系统后，在光传递系统的参考入口处的光分布信息；根据光分布信息在光传递系统的参考入口处显示光源配置提示信息。
为解决上述技术问题，本申请采用的技术方案是：提供一种光源标定装置，该光源标定装置包括互相连接的存储器和处理器，存储器用于存储计算机程序，计算机程序在被处理器执行时，用于实现上述的光源标定方法。
通过上述方案，本申请的有益效果是：在空间光调制器的出光位置设置参考阵列光源，通过控制参考阵列光源，反推出如何设置阵列光源才能使得阵列光源出射的光束依次经过光传递系统与空间光调制器后分布均匀且一致，通过对光源的排布预先调整，使得光源本身的分布不均匀整齐，但空间光调制器出射的光束整齐均匀，光束的形状与位置分布的一致性较好，且实现简单，能够解决光传递系统与空间光调制器带来的照明劣化问题。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。其中：
图1(a)是理想的阵列光源的网格图；
图1(b)是枕形畸变对应的阵列光源的网格图；
图1(c)是桶形畸变对应的阵列光源的网格图；
图2是DMD照明的示意图；
图3是本申请提供的光源标定方法一实施例的流程示意图；
图4是图3所示的实施例中光机系统的结构示意图；
图5是本申请提供的光源标定方法另一实施例的流程示意图；
图6(a)是图5所示的实施例中光机系统的结构示意图；
图6(b)是图6(a)所示的实施例中阵列光源的截面示意图；
图6(c)是图6(a)所示的实施例中空间光调制器出射的光束的排列示意图；
图7是图5所示的实施例中光机系统的另一结构示意图；
图8是本申请提供的光源标定装置一实施例的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性的劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
局部背光调节投影机需要在空间光调制器上实现阵列化、可单独调控的照明，理想的照明应当具有整齐的阵列排列，光源之间的一致性高，并且光源的形貌、光源之间的交叠情况都可控；从阵列光源到空间光调制器之间，光束需要经过光机中的一些光学元件(例如透镜、棱镜等)，由于光传递系统难以避免的具有像差和畸变现象，并且往往还会有一些拉伸效 应，使得原本整齐排布、大小一致的阵列光源在空间光调制器上的照明变得排布不均、形状和强度也各有差异，影响局部背光调节的效果。
请参阅图3与图4，图3是本申请提供的光源标定方法一实施例的流程示意图，图4是图3所示的实施例中光机系统的结构示意图，该方法基于光学仿真设计系统，该方法包括：
步骤11：接收光机配置指令，根据光机配置指令在仿真设计界面上配置光机系统对应的图标。
该光机配置指令可以为用户在仿真设计界面上进行操作产生的命令，光机系统包括光传递系统11和空间光调制器12，光源标定装置在接收到光机配置指令后，可在仿真设计界面的相应位置显示光传递系统11和空间光调制器12，光传递系统11包括但不限于棱镜、透镜或反射镜等元件。
步骤12：接收第一设置指令，在空间光调制器调制器的出光位置配置反向均匀发光的参考阵列光源参考阵列光源。
在配置了光传递系统11和空间光调制器12后，用户可继续进行操作，产生第一设置指令，光源标定装置在接收到该第一设置指令后，可在仿真设计界面上空间光调制器12的出光方向上显示一个参考阵列光源13的图标，参考阵列光源13可发光均匀，参考阵列光源13发出的光可射入空间光调制器12。
步骤13：模拟计算参考阵列光源发出的参考光束依次经过空间光调制器和光传递系统后，在光传递系统的参考入口处的光分布信息。
在控制参考阵列光源13发光后，参考阵列光源13发出的光束可经过空间光调制器12，空间光调制器12可对参考阵列光源13发出的参考光束进行调制，输出调制后的光束至光传递系统11，光传递系统11可对调制后的光束进行处理并出射，可对光传递系统11出射的光进行统计，从而得到在光传递系统11的参考入口处的光分布信息，该参考入口为远离空间光调制器12的一侧。
步骤14：根据光分布信息在光传递系统的参考入口处显示光源配置提示信息。
在获取到光分布信息后，可利用该光分布信息在仿真设计界面上显示 光源配置信息，该光源配置提示信息包括光源的位置信息，以提醒用户将光源放置在设定位置，从而使得光源发出的光束经过光传递系统11以及空间光调制器12后，出射均匀的光束。
在一具体的实施例中，参考阵列光源13包括多个照明光锥，如图4所示，在空间光调制器12的出光位置处设置均匀整齐且一致的照明光锥13a-13c，反向通过光传递系统11进行追迹，得到照明位置15a-15c，将光源按照这些位置进行设置，便能够极大程度的抵消光传递系统11以及空间光调制器12带来的照明劣化问题。
本实施例提供了一种可以适用于局部背光调节的阵列照明设计，采用光束反向追迹的方式，在空间光调制器12的出光位置设置参考阵列光源13，通过控制参考阵列光源13，反推出如何设置光源才能使得光源出射的光束依次经过光传递系统11与空间光调制器12后分布均匀且一致，以空间光调制器12出射的光束均匀且一致为目标，对光源的排布做出预先的调整，使得光源本身的分布不均匀整齐，但空间光调制器12出射的光束整齐均匀，光束的形状与位置分布的一致性更好，且实现简单。
请参阅图5与图6，图5是本申请提供的光源标定方法另一实施例的流程示意图，图6是图5所示的实施例中光机系统的结构示意图，该方法基于光学仿真设计系统，该方法包括：
步骤21：在接收到光机配置指令后，将光传递系统的图标配置在仿真设计界面上的第一预设位置处，并将空间光调制器的图标配置在仿真设计界面上的第二预设位置处。
光机系统对应的图标包括光传递系统21的图标与空间光调制器22的图标，光机配置指令包括第一预设位置与第二预设位置，且第二预设位置在光传递系统21的出光方向上。
光源标定装置在接收到用户对光学仿真设计系统进行操作而产生的光机配置指令后，可分别将光传递系统21与空间光调制器22放在仿真设计界面的第一预设位置和第二预设位置处。
步骤22：接收第一设置指令，在空间光调制器的出光位置配置反向均匀发光的参考阵列光源。
步骤23：接收第一发光指令，根据第一发光指令控制参考阵列光源产生参考光束。
在配置好参考阵列光源后，用户可通过点击参考阵列光源上的开关或仿真设计界面上的启动按钮，使得参考阵列光源出射参考光束。
步骤24：统计从光传递系统出射的光束的位置，得到光分布信息。
在参考阵列光源出射参考光束之后，可对参考光束的出射位置进行统计，从而得到光分布信息，该光分布信息可包括出射的光束的位置以及出射的角度。
步骤25：根据光分布信息在光传递系统的参考入口处显示光源配置提示信息。
光源标定装置在获取到光分布信息后，可根据出射的光束的位置以及出射角度，生成光源配置提示信息，该光源配置提示信息可根据阵列光源23与光传递系统21之间的距离自动调整，以实时提醒用户阵列光源23需要放置的位置。
步骤26：接收光源移除指令，将参考阵列光源从第三预设位置移除。
参考阵列光源位于仿真设计界面的第三预设位置处，在获取到光源配置提示信息后，由于不再需要参考阵列光源，因而可将参考阵列光源从仿真设计界面上移除。
步骤27：接收第二光源设置指令，根据光源配置提示信息在仿真设计界面上配置阵列光源。
该光源配置提示信息包括位置信息，阵列光源23包括多个发光单元，每个发光单元的位置与位置信息对应，发光单元可以是经过了匀光设计的阵列激光器或LED(Light Emitting Diode，发光二极管)，也可以是阵列方棒或者是方光纤；在生成了光源配置提示信息后，用户可对光学仿真设计系统进行操作，以在仿真设计界面上放置发光单元，从而产生第二光源设置指令，光源标定装置在接收到该第二光源设置指令后，在仿真设计界面的相应位置显示发光单元。
步骤28：接收第二发光指令，根据第二发光指令控制阵列光源产生光束。
在配置好发光单元后，光源标定装置可接收用户对光学仿真设计系统进行操作而产生的第二发光指令，然后控制阵列光源产生光束，光束依次经过光传递系统21与空间光调制器22，且空间光调制器22出射的光束对应的光斑分布均匀且大小形状一致。
在一具体的实施例中，如图6(a)所示，阵列光源23包括多个方光纤，图6(b)为阵列光源23的截面，空间光调制器22为DMD(Digital Micromirror Device，数字微镜器件)，光机系统还包括反射组件24，反射组件24可以为TIR(Total Internal Reflection，全反射)棱镜；光源标定装置可接收第三设置指令，并在仿真设计界面上光传递系统21的出光方向配置反射组件，以将光传递系统21出射的光束反射至空间光调制器22。
对方光纤的排列上进行了预先的调整，每行方光纤的位置存在略微的错位，用于弥补DMD的法线与入射光主方向不一致导致的拉伸效应；方光纤的出口位置存在前后的位错，用于弥补DMD平面上各点光程差不同和场曲等效应导致的光斑大小不一，最终DMD输出的照明如图6(c)所示，排布更有序，一致性更好。
在另一具体的实施例中，如图7所示，光机系统还包括硅上液晶器件(LCOS，Liquid Crystal on Silicon)25与PBS(polarization beam splitter，偏振分光棱镜)器件26，光源标定装置可在接收到第四设置指令时，在空间光调制器22出射的光束的光路上配置LCOS器件25，以对空间光调制器22出射的光束进行处理，生成光学图像，PBS器件26可与LCOS器件25配合以对光传递系统21输出的光束进行处理。
由于入射光方向与LCOS的法线一致，所以拉伸和光程差的效应不太明显，其主要作用的是场曲畸变等像差，抵消这些效应的方法与上述实施例中相同，均是通过获取阵列光源23的设置位置，从而使得DMD出射的光束整齐且均匀。
本实施例提供了一种光学上的修正办法，通过对空间光调制器22的照明进行设计，得到非均匀、非整齐排布的阵列光源23，使得空间光调制器22出射的照明最优化，得到整体均匀的出射光，光学效率比较高，能量损失也最小。
请参阅图8，图8是本申请提供的光源标定装置一实施例的结构示意图，光源标定装置80包括互相连接的存储器81和处理器82，存储器81用于存储计算机程序，计算机程序在被处理器82执行时，用于实现上述实施例中的光源标定方法。
光源标定装置80利用反向追迹对阵列光源的排布进行预先的调整，使得入射的光束不均匀整齐，但出射光束的形状以及位置分布的一致性较好。
以上仅为本申请的实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (10)

  1. 一种光源标定方法，基于光学仿真设计系统，其特征在于，包括：
    接收光机配置指令，根据所述光机配置指令在仿真设计界面上配置光机系统对应的图标，所述光机系统包括光传递系统和空间光调制器；
    接收第一设置指令，在所述空间光调制器的出光位置配置反向均匀发光的参考阵列光源；
    模拟计算所述参考阵列光源发出的参考光束依次经过所述空间光调制器和所述光传递系统后，在所述光传递系统的参考入口处的光分布信息；
    根据所述光分布信息在所述光传递系统的参考入口处显示光源配置提示信息。
  2. 根据权利要求1所述的光源标定方法，其特征在于，所述光机系统对应的图标包括所述光传递系统的图标与所述空间光调制器的图标，所述根据所述光机配置指令在仿真设计界面上配置光机系统对应的图标的步骤，包括：
    在接收到所述光机配置指令后，将所述光传递系统的图标配置在所述仿真设计界面上的第一预设位置处，并将所述空间光调制器的图标配置在所述仿真设计界面上的第二预设位置处；
    其中，所述光机配置指令包括所述第一预设位置与所述第二预设位置，且所述第二预设位置在所述光传递系统的出光方向上。
  3. 根据权利要求1所述的光源标定方法，其特征在于，所述模拟计算所述参考阵列光源发出的参考光束依次经过所述空间光调制器和所述光传递系统的步骤之前，包括：
    接收第一发光指令，根据所述第一发光指令控制所述参考阵列光源产生所述参考光束。
  4. 根据权利要求1所述的光源标定方法，其特征在于，所述参考阵列光源位于所述仿真设计界面的第三预设位置处，所述方法还包括：
    接收光源移除指令，将所述参考阵列光源从所述第三预设位置移 除。
  5. 根据权利要求4所述的光源标定方法，其特征在于，所述光源配置提示信息包括位置信息，所述方法还包括：
    接收第二光源设置指令，根据所述光源配置提示信息在所述仿真设计界面上配置阵列光源；
    其中，所述阵列光源包括多个发光单元，每个所述发光单元的位置与所述位置信息对应。
  6. 根据权利要求5所述的光源标定方法，其特征在于，所述方法还包括：
    接收第二发光指令，根据所述第二发光指令控制所述阵列光源产生光束；
    其中，所述光束依次经过所述光传递系统与所述空间光调制器，且所述空间光调制器出射的光束对应的光斑分布均匀且大小形状一致。
  7. 根据权利要求6所述的光源标定方法，其特征在于，所述光机系统还包括反射组件，所述方法还包括：
    接收第三设置指令，在所述仿真设计界面上所述光传递系统的出光方向配置所述反射组件，以将所述光传递系统出射的光束反射至所述空间光调制器。
  8. 根据权利要求6所述的光源标定方法，其特征在于，所述光机系统还包括硅上液晶器件，所述方法还包括：
    在接收到第四设置指令时，在所述空间光调制器出射的光束的光路上配置所述硅上液晶器件，以对所述空间光调制器出射的光束进行处理，生成光学图像。
  9. 根据权利要求1所述的光源标定方法，其特征在于，所述模拟计算所述参考阵列光源发出的参考光束依次经过所述空间光调制器和所述光传递系统后，在所述光传递系统的参考入口处的光分布信息的步骤，包括：
    统计从所述光传递系统出射的光束的位置，得到所述光分布信息。
  10. 一种光源标定装置，其特征在于，包括互相连接的存储器和处理器，其中，所述存储器用于存储计算机程序，所述计算机程序在被所述处理器执行时，用于实现权利要求1-9中任一项所述的光源标定方法。
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