Optical path system and electronic equipment based on dual DMD

Abstract

The present invention provides an optical path system and electronic equipment based on dual DMDs. The optical path system uses two DMD devices for image splicing, that is, the images modulated by the two DMD devices are adjusted and spliced ​​and aligned on the imaging surface to form a complete image. Since two DMD devices are used, the output power can reach twice that of a single DMD, so that the system can be applied to occasions requiring high power.

Description

Technical Field

[0001] The present invention relates to the field of optical microscopy technology, and more specifically to an optical path system and electronic equipment based on dual DMD. Background Art

[0002] DMD (Digital Micro-Mirror Device) is an array composed of multiple high-speed digital light reflectors. Specifically, DMD is composed of many small aluminum reflective mirrors. The number of mirrors is determined by the display resolution, and one small mirror corresponds to one pixel. The object is imaged on the DMD device, and each image point is scanned onto the detector in turn through the pixel-level controllable characteristics of the DMD device and its high-speed flip frequency, realizing high-speed passive point scanning imaging of objects under visible light conditions during the day. Alternatively, active scanning imaging can be achieved by adding an appropriate light source.

[0003] In layman's terms, DMD is a type of optical switch that uses a rotating mirror to open and close the optical switch. In recent years, DMD has been used more and more widely and has been widely used in projection display, digital exposure and digital 3D printing.

[0004] However, most existing optical path systems use a single DMD device for light modulation. Since the optical power that a single DMD device can withstand is limited, the optical path system of a single DMD device cannot achieve higher brightness and higher power output, which is severely limited in situations where high power and / or high brightness are required. Summary of the invention

[0005] In view of this, in order to solve the above problems, the present invention provides an optical path system and electronic equipment based on dual DMD, and the technical solution is as follows:

[0006] A dual DMD-based optical system, comprising: a first TIR prism, a second TIR prism, a first DMD device, and a second DMD device;

[0007] The first TIR prism is used to process a first partial light beam in the incident light beam so as to be incident on the first DMD device;

[0008] The first DMD device is used to modulate the first partial light beam and transmit the modulated light beam to the second TIR prism through the first TIR prism;

[0009] The first TIR prism is further used to process a second partial light beam in the incident light beam and to be incident on the second TIR prism;

[0010] The second TIR prism is used to process the second partial light beam so as to be incident on the second DMD device;

[0011] The second DMD device is used to modulate the second partial light beam and output it through the second TIR prism;

[0012] The second TIR prism is also used to process the modulated first partial light beam and output it together with the modulated second partial light beam.

[0013] Preferably, in the above optical path system, the optical path system further comprises: a light source;

[0014] The light source is used to output the incident light beam.

[0015] Preferably, in the above optical path system, the optical path system further comprises: a first adjustment unit;

[0016] The first adjustment unit is used to shape the incident light beam to adjust the incident angle of the incident light beam to the first TIR prism.

[0017] Preferably, in the above optical path system, the first adjustment unit comprises: an optical rod and a first relay lens group;

[0018] The light rod is used to homogenize the incident light beam;

[0019] The first relay lens group is used to shape the light beam after homogenization so as to adjust the incident angle of the light beam incident to the first TIR prism.

[0020] Preferably, in the above optical path system, the optical path system further comprises: a second modulation unit;

[0021] The second modulation unit is used to shape the light beam output by the first TIR prism to adjust the incident angle of the light beam incident to the second TIR prism.

[0022] Preferably, in the above optical path system, the second modulation unit at least includes: a second relay lens group.

[0023] Preferably, in the above optical path system, the light source is a laser light source, an LED light source or a mercury lamp light source.

[0024] Preferably, in the above optical path system, the optical path system further comprises: a lens:

[0025] The lens is used to allow the light information output by the second TIR prism to be incident on an imaging surface.

[0026] An electronic device, characterized in that the electronic device comprises any one of the optical path systems described above.

[0027] Preferably, in the above electronic device, the electronic device includes a laser direct writing device or a projection device.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention provides an optical path system based on dual DMD, comprising: a first TIR prism, a second TIR prism, a first DMD device and a second DMD device; the first TIR prism is used to process a first partial light beam in an incident light beam so as to be incident on the first DMD device; the first DMD device is used to modulate the first partial light beam and to be incident on the second TIR prism through the first TIR prism; the first TIR prism is also used to process a second partial light beam in the incident light beam and to be incident on the second TIR prism; the second TIR prism is used to process the second partial light beam so as to be incident on the second DMD device; the second DMD device is used to modulate the second partial light beam and to output it through the second TIR prism; the second TIR prism is also used to process the modulated first partial light beam and output it together with the modulated second partial light beam.

[0030] That is, the present invention uses two DMD devices to perform image splicing, that is, the images modulated by the two DMD devices are adjusted and spliced ​​and aligned on the imaging surface to form a complete image. Since two DMD devices are used, the output power can reach twice that of a single DMD, so that the system can be applied to occasions requiring high power. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of a dual DMD-based optical path system provided by an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of the structure of another optical path system based on dual DMD provided in an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of the structure of another optical path system based on dual DMD provided in an embodiment of the present invention;

[0035] Figure 4 A schematic diagram of the structure of another optical path system based on dual DMD provided in an embodiment of the present invention;

[0036] Figure 5 A schematic diagram of the structure of another optical path system based on dual DMD provided in an embodiment of the present invention;

[0037] Figure 6 A schematic diagram of the structure of another optical path system based on dual DMD provided in an embodiment of the present invention;

[0038] Figure 7 A schematic diagram of the structure of another optical path system based on dual DMD provided in an embodiment of the present invention;

[0039] Figure 8 A schematic diagram of the principle of position adjustment of a dual DMD device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] refer to Figure 1 , Figure 1 A schematic structural diagram of an optical path system based on dual DMDs provided in an embodiment of the present invention.

[0043] The optical path system includes: a first TIR prism 11, a second TIR prism 15, a first DMD device 14 and a second DMD device 16;

[0044] The first TIR prism 11 is used to process a first partial light beam 12 in the incident light beam so as to be incident on the first DMD device 14;

[0045] The first DMD device 14 is used to modulate the first partial light beam 12 and make it incident on the second TIR prism 15 through the first TIR prism 11;

[0046] The first TIR prism 11 is also used to process the second partial light beam 13 in the incident light beam and incident on the second TIR prism 15;

[0047] The second TIR prism 15 is used to process the second partial light beam 13 so as to be incident on the second DMD device 16;

[0048] The second DMD device 16 is used to modulate the second partial light beam 13 and output it through the second TIR prism 15;

[0049] The second TIR prism 15 is further used to process the modulated first partial light beam 12 and output it together with the modulated second partial light beam 13 .

[0050] In this embodiment, if Figure 1 As shown, the incident light beam is divided into two light beams for illustration. The first partial light beam 12 and the second partial light beam 13 are first incident into a reflective area through a transmission area of ​​the first TIR prism 11, and the two partial light beams are reflected by the reflective area, and the first partial light beam 12 is reflected to another transmission area, and then the first partial light beam 12 is incident into the first DMD device 14, and the first partial light beam 12 is modulated by the first DMD device 14.

[0051] The second partial light beam 13 is reflected to another reflection area, reflected again, and incident on the second TIR prism 15 .

[0052] The first partial light beam 12 modulated by the first DMD device 14 is also incident on the second TIR prism 15 .

[0053] The modulated first partial light beam 12 and the second partial light beam 13 are first incident on a reflective area through a transmission area of ​​the second TIR prism 15, and the two partial light beams are reflected by the reflective area, and the second partial light beam 13 is reflected to another transmission area, and then the second partial light beam 13 is incident on the second DMD device 15, and the second partial light beam 13 is modulated by the second DMD device 15.

[0054] The first partial light beam 12 modulated by the first DMD device 14 and the second partial light beam 13 modulated by the second DMD device 16 are finally output.

[0055] That is to say, the first partial beam 12 in the incident light beam is modulated only by the first DMD device 14, and the second partial beam 13 will not be incident on the effective area of ​​the first DMD device 13; similarly, the second partial beam 13 in the incident light beam is modulated only by the second DMD device 16, and the first partial beam 12 will not be incident on the effective area of ​​the second DMD device 16.

[0056] That is, in the image processing stage, the image needs to be split into two parts for stitching, and the stitching needs to be accurate to each pixel.

[0057] It should be noted that the first partial light beam 12 needs to completely cover the area of ​​the first DMD device 14, and the second partial light beam 13 needs to completely cover the area of ​​the second DMD device 16 to avoid the phenomenon that the corresponding pixel points have no light, thereby improving the display effect of the image.

[0058] Further, based on the above embodiments of the present invention, refer to Figure 2 , Figure 2 A schematic structural diagram of another optical path system based on dual DMDs provided in an embodiment of the present invention.

[0059] The optical path system further includes: a light source 17;

[0060] The light source 17 is used to output the incident light beam.

[0061] In this embodiment, the light source 17 includes but is not limited to a laser light source, an LED light source or a mercury lamp light source.

[0062] Further, based on the above embodiments of the present invention, refer to Figure 3 , Figure 3 A schematic structural diagram of another optical path system based on dual DMD provided in an embodiment of the present invention.

[0063] The optical path system further includes: a first adjustment unit 18;

[0064] The first adjustment unit 18 is used to shape the incident light beam to adjust the incident angle of the incident light beam to the first TIR prism 11 .

[0065] In this embodiment, since the angle at which the light is incident on the DMD device determines the depth of field of the final image, in order to increase the depth of field, the incident light beam is shaped by the first adjustment unit 18 to adjust the incident angle of the light beam to the first TIR prism 11 and reduce the incident angle as much as possible to achieve the desired effect.

[0066] Further, based on the above embodiments of the present invention, refer to Figure 4 , Figure 4 A schematic structural diagram of another optical path system based on dual DMD provided in an embodiment of the present invention.

[0067] The first adjustment unit 18 includes: an optical rod 181 and a first relay lens group 182;

[0068] The optical rod 181 is used to homogenize the incident light beam;

[0069] The first relay lens group 182 is used to shape the light beam after homogenization so as to adjust the incident angle of the light beam to the first TIR prism 11 .

[0070] In this embodiment, after being coupled, the light beam output by the light source 17 all enters the light rod 181, where the light is continuously emitted and reflected to be homogenized, and then enters the first relay lens group 182 to shape the light and control the output angle, i.e., adjust the incident angle to the first TIR prism 11.

[0071] Further, based on the above embodiments of the present invention, refer to Figure 5 , Figure 5 A schematic structural diagram of another optical path system based on dual DMD provided in an embodiment of the present invention.

[0072] The optical path system further includes: a second modulation unit 19;

[0073] The second modulation unit 19 is used to shape the light beam output by the first TIR prism 11 to adjust the incident angle of the light beam incident to the second TIR prism 15 .

[0074] In this embodiment, optionally, reference Figure 6 , Figure 6 The schematic diagram of the structure of another optical path system based on dual DMD provided by an embodiment of the present invention is as follows: the second modulation unit 19 at least comprises: a second relay lens group 191 .

[0075] Further, based on the above embodiments of the present invention, refer to Figure 7 , Figure 7 A schematic structural diagram of another optical path system based on dual DMD provided in an embodiment of the present invention.

[0076] The optical path system further includes: a lens 20:

[0077] The lens 20 is used to allow the light information output by the second TIR prism 15 to be incident on an imaging surface.

[0078] In this embodiment, the optical information modulated by the first DMD device 14 and the optical information modulated by the second DMD device 16 are output through the lens 20 .

[0079] refer to Figure 8 , Figure 8 A schematic diagram of the principle of position adjustment of a dual DMD device provided in an embodiment of the present invention.

[0080] In order to completely stitch together the two images formed by the lens 20, it is necessary to adjust the position of one of the DMD devices in two dimensions, including but not limited to, by a mechanical fixing device.

[0081] Further, based on Figure 7 The optical path system based on dual DMD shown can set auxiliary film layers such as anti-reflection film and reflective film on the corresponding optical elements according to the wavelength of light.

[0082] Furthermore, based on all the above embodiments of the present invention, an electronic device is provided in another embodiment of the present invention.

[0083] In this embodiment, the electronic device includes but is not limited to a laser direct writing device or a projection device.

[0084] The above is a detailed introduction to an optical path system and electronic device based on dual DMD provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for general technicians in this field, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0085] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0086] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device that includes a series of elements is inherent to the elements, or also includes elements inherent to these processes, methods, articles or devices. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0087] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An optical path system based on dual DMD, characterized in that: The optical path system comprises: a first TIR prism, a second TIR prism, a first DMD device and a second DMD device; The first TIR prism is used to process a first partial light beam in the incident light beam so as to be incident on the first DMD device; The first DMD device is used to modulate the first partial light beam and transmit the modulated light beam to the second TIR prism through the first TIR prism; The first TIR prism is further used to process a second partial light beam in the incident light beam and to be incident on the second TIR prism; The second TIR prism is used to process the second partial light beam so as to be incident on the second DMD device; The second DMD device is used to modulate the second partial light beam and output it through the second TIR prism; The second TIR prism is also used to process the modulated first partial light beam and output it together with the modulated second partial light beam; Among them, the first partial light beam and the second partial light beam are incident on a reflective area through a transmission area of ​​the first TIR prism, and the two partial light beams are reflected by the reflective area, and the first partial light beam is reflected to another transmission area, and then the first partial light beam is incident on the first DMD device, and the second partial light beam is reflected to another reflection area, reflected again, and incident on the second TIR prism.

2. The optical path system according to claim 1, characterized in that: The optical path system further includes: a light source; The light source is used to output the incident light beam.

3. The optical path system according to claim 1, characterized in that: The optical path system further includes: a first adjustment unit; The first adjustment unit is used to shape the incident light beam to adjust the incident angle of the incident light beam to the first TIR prism.

4. The optical path system according to claim 3, characterized in that: The first adjustment unit includes: a light rod and a first relay lens group; The light rod is used to homogenize the incident light beam; The first relay lens group is used to shape the light beam after homogenization so as to adjust the incident angle of the light beam incident to the first TIR prism.

5. The optical path system according to claim 1, characterized in that: The optical path system further includes: a second modulation unit; The second modulation unit is used to shape the light beam output by the first TIR prism to adjust the incident angle of the light beam incident to the second TIR prism.

6. The optical path system according to claim 5, characterized in that: The second modulation unit at least includes: a second relay lens group.

7. The optical path system according to claim 2, characterized in that: The light source is a laser light source, an LED light source or a mercury lamp light source.

8. The optical path system according to claim 1, characterized in that: The optical path system also includes: a lens: The lens is used to allow the light information output by the second TIR prism to be incident on an imaging surface.

9. An electronic device, characterized in that: The electronic device comprises the optical path system according to any one of claims 1-8.

10. The electronic device according to claim 9, characterized in that: The electronic device includes a laser direct writing device or a projection device.

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