CN115981079A - Projection method and device - Google Patents
Projection method and device Download PDFInfo
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- CN115981079A CN115981079A CN202211657432.0A CN202211657432A CN115981079A CN 115981079 A CN115981079 A CN 115981079A CN 202211657432 A CN202211657432 A CN 202211657432A CN 115981079 A CN115981079 A CN 115981079A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000005338 frosted glass Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 230000003287 optical effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000005337 ground glass Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
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Abstract
The present application relates to the field of projection devices, and in particular, to a projection method and device. A projection device comprises a light source module, a condenser group used for collimating the luminous rays of the light source module, a reflector used for changing the angle of the light beams passing through the condenser group, a relay lens used for enabling the light beams passing through the reflector to obtain a total reflection incident angle, a DMD digital display module, a TIR prism group and a projection lens, wherein the incident side of the TIR prism group is used for receiving the light beams of the total reflection incident angle and reflecting the light beams to enter the DMD digital display module, and the DMD digital display module is used for guiding the image of the DMD into the projection lens or directly reflecting the incident light out of the system. This application uses DMD digital display system, obtains abundant dynamic effect, is convenient for switch logo pattern.
Description
Technical Field
The present application relates to the field of projection devices, and in particular, to a projection method and device.
Background
Stage lighting is also called stage lighting, and is called lighting for short. One of the means of stage art modeling. With the development of the scenario, stage lighting equipment (such as lighting lamps, slides, control systems and the like) and technical means are applied to display the environment and rendering atmosphere by light color and change thereof, highlight central characters, create space feeling and time feeling of the stage, shape the external image of the stage performance and provide necessary lighting effect.
Now, a Chinese invention patent with a publication number of CN205301789U is retrieved, and an intelligent control advertisement projection lamp is disclosed, wherein the LOGO pattern disk can be expanded into 4, 6 and 8 LOGO projection patterns with the same size and dimension but different pattern contents, and the time and speed for changing the patterns can be manually set; the intelligent driving circuit is internally provided with a DMX interface program, can be externally connected with a DMX controller, can be networked to operate simultaneously or control the operation together with a stage lamp, and controls the operation through WIFI and a mobile phone APP program; the LOGO pattern disk can be controlled through a color LCD display screen.
However, the pattern on the LOGO pattern dish is fixed in this projection lamp and when the pattern that does not exist on the LOGO pattern dish needs to be changed, the LOGO dish will be detached, which is very troublesome.
Disclosure of Invention
In order to facilitate LOGO replacement, the application provides a projection method and device.
In a first aspect, the present application provides a projection apparatus, which adopts the following technical solution:
a projection device comprises a light source module, a condenser group used for collimating the luminous rays of the light source module, a reflector used for changing the angle of the light beams passing through the condenser group, a relay lens used for enabling the light beams passing through the reflector to obtain a total reflection incident angle, a DMD digital display module, a TIR prism group and a projection lens, wherein the incident side of the TIR prism group is used for receiving the light beams of the total reflection incident angle and reflecting the light beams to enter the DMD digital display module, and the DMD digital display module is used for guiding the image of the DMD into the projection lens or directly reflecting the incident light out of the system.
By adopting the technical scheme, the DMD digital display system is used, rich dynamic effects are obtained, and logo patterns can be switched conveniently. The reflector is used for making the structure of the projection lamp compact. The lens space of the condenser lens group is simply zoomed, and the uniformity of the lamp is changed as required. The TIR prism is used to make the light beam fill the whole emergent light lens, and the light-emitting of the projection lamp is full.
Optionally, a color device for changing a color of the light beam is disposed between the light source module and the condenser lens group, the color device is a color wheel, and the color wheel is provided with a red area, a green area, a blue area, and a white area.
By adopting the technical scheme, the color wheel consists of the color sheets plated with red/green/blue/white (or blank), and has two functions: when the color wheel is not rotated, the white (or blank) sector stays on the light path, and the light beam of the system is not processed by the color time sequence and is irradiated on the DMD digital display module to form a black-and-white image through the projection lens. When the lamp projects a black and white pattern or is used only as a light beam, the white (or blank) sectors of the color wheel stay in the light path. When the color wheel rotates at high speed, the light beam is modulated into red/green/blue/white which changes along with time by the color wheel, the red/green/blue/white is irradiated on the DMD digital display module, and the color pattern modulated by the DMD chip in the DMD digital display module is colored by the projection lens, so that high-efficiency color mixing and light utilization rate are obtained.
Optionally, the projection lens includes a fixed focus lens or a zoom lens.
By adopting the technical scheme, the fixed-focus lens is fixed without adjusting the focal length of the projection lens, so that the time for adjusting the projection lens is saved; the zoom lens can adjust the focal length of the projection lens according to a use scene, so that the projection lens is more flexible to use.
Optionally, the zoom lens includes a focusing group, a zoom group, and a front fixed group, and incident light led into the projection lens passes through the focusing group, the zoom group, and the front fixed group in sequence.
Optionally, the TIR prism group includes a first prism used for combining with the DMD digital display module and a second prism used for combining with the projection lens, the first prism and the second prism are bonded and fixed, an air space is arranged at a joint of the first prism and the second prism, and a total reflection surface of the TIR prism group is provided with an antireflection film with a large incident angle broadband.
By adopting the technical scheme, when the incident light meets the condition that the incident angle is larger than the total reflection angle in the combined air gap between the inclined plane of the prism and the two prisms, the light is totally reflected. The anti-reflection film improves the light transmission capability of the TIR prism and reduces the light loss.
Optionally, a light equalizing assembly is disposed between the focusing group and the zooming group.
By adopting the technical scheme, the light homogenizing component homogenizes the light penetrating through the projection lens.
Optionally, a light equalizing assembly is arranged between the zoom group and the front fixing group.
By adopting the technical scheme, the light homogenizing component homogenizes the light penetrating through the projection lens.
Optionally, the light homogenizing assembly comprises a polygonal mirror or frosted glass.
By adopting the technical scheme, the polygonal mirror or the ground glass has a simple structure, is convenient to install and use, and is very practical.
In a second aspect, the present application provides a projection method, which adopts the following technical solutions:
a projection method, based on any one of the projection apparatuses, includes the following steps: s1: the light source module emits light rays; s2: the luminous rays are focused by the condenser lens group; s3: the direction of the variable-focus luminous rays is changed through the reflector; s4: the direction-changed zooming light rays pass through a relay lens to obtain light rays with a total reflection incident angle; s5: the light rays with the total reflection incident angle pass through the TIR prism group, and the incident side of the TIR prism group is used for receiving the light rays with the total reflection incident angle and reflecting the light rays to enter the DMD digital display module; s6: the DMD digital display module guides the image of the DMD into a projection lens through a TIR prism group or directly reflects incident light out of the system.
By adopting the technical scheme, the image of the DMD digital display module is projected out through the projection lens, the image of the DMD is convenient to switch and update, and the LOGO pattern is convenient to switch and update; the utilization rate of the luminous light is high, and the effects of energy conservation and environmental protection are achieved.
Optionally, before executing step S2, the method includes the following steps: s1-1: the luminescent light passes through a color device that changes the color of the light beam.
Through adopting above-mentioned technical scheme, make the image of DMD have the colour, improve the sight of the image of DMD, and then make LOGO pattern more pleasing to the eye.
In summary, the present application includes at least one of the following beneficial technical effects:
a DMD digital display system is used to obtain rich dynamic effects, so that logo patterns can be switched conveniently;
through the reflector, the volume of the projection lamp is reduced, and the projection lamp is more convenient to use.
Drawings
Fig. 1 is a schematic structural diagram of a projection apparatus according to the present application.
Fig. 2 is a schematic diagram illustrating an operation of a DMD digital display module in a projection device according to the present application.
Fig. 3 is a schematic workflow diagram of a projection method according to the present application.
Description of reference numerals:
1. a light source module; 2. a condenser group; 3. a reflective mirror; 4. a relay lens; 5. a DMD digital display module; 6. a TIR prism group; 61. a first prism; 62. a second prism; 63. an air space; 7. a projection lens; 71. a focusing group; 72. zooming group; 73. a front fixed group; 74. a light equalizing component; 8. and a color device.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses projection equipment.
Referring to fig. 1, the projection apparatus includes a light source module 1, a condenser group 2 for collimating light emitted from the light source module 1, a mirror 3 for changing an angle of a light beam passing through the condenser group 2, a relay lens 4 for obtaining a total reflection incident angle of the light beam passing through the mirror 3, a DMD digital display module 5, a TIR prism group 6, and a projection lens 7. The incidence side of the TIR prism group 6 is used for receiving the light beam with the total reflection incidence angle and reflecting the light beam into the DMD digital display module 5, and the DMD digital display module 5 is used for guiding the incident light into the projection lens 7 or reflecting the incident light out of the system. Specifically, since the imaging area of the DMD digital display module 5 is square, the light beam of the lamp often uses a circle, so that it is not necessary to shape the light beam using a square light guide rod, and it is only necessary to use a circle area on the DMD digital display module 5. The relay lens 4 collects the light beam on the TIR incident surface, and totally reflects the light beam on the TIR inclined surface.
And a DMD digital display system is used to obtain rich dynamic effects and facilitate the switching of logo patterns. The reflector 3 is provided to make the projection lamp compact. The lens space of the condenser lens group 2 is simply changed, and the uniformity of the lamp is changed according to the requirement. The TIR prism is used to make the light beam fill the whole emergent light lens, and the light-emitting of the projection lamp is full.
A color device 8 for changing the color of the light beam is arranged between the light source module 1 and the condenser lens group 2. Specifically, the color device 8 is a color wheel, which is composed of ring-shaped color segments plated with red/green/blue/white (or blank), and has two functions: when the color wheel is not rotated, the white (or blank) sector stays on the light path, and the light beam of the system is not processed by the color sequence and is irradiated on the DMD digital display module 5 to form a black-and-white image through the projection lens 7. When the lamp projects a black and white pattern or is used only as a light beam, the white (or blank) sectors of the color wheel stay in the light path. When the color wheel rotates at high speed, the light beam is modulated into red/green/blue/white which changes with time by the color wheel, and irradiates on the DMD digital display module 5, and the color pattern modulated by the DMD chip in the DMD digital display module 5 becomes color by the projection lens 7, so as to obtain high-efficiency color mixing and light utilization rate.
In the present embodiment, the projection lens 7 includes a zoom lens, and in other embodiments, the projection lens 7 includes a vertex lens. In the using process, the fixed-focus lens is fixed without adjusting the focal length of the projection lens 7, so that the time for adjusting the projection lens 7 is saved; the zoom lens can adjust the focal length of the projection lens 7 according to the use scene, so that the projection lens 7 can be used more flexibly.
Specifically, the zoom lens includes a focus group 71, a magnification-varying group 72, and a front fixed group 73, and incident light guided into the projection lens 7 passes through the focus group 71, the magnification-varying group 72, and the front fixed group 73 in this order.
A light-equalizing assembly 74 is arranged between the focusing group 71 and the zoom group 72, and a light-equalizing assembly 74 is arranged between the zoom group 72 and the front fixing group 73 to equalize light transmitted through the projection lens. In the embodiment, the optical component comprises the polygonal mirror, and in other embodiments, the optical component can comprise ground glass, so that the structure of the optical component and the ground glass is simple, the installation and the use are convenient, and the optical component is very practical.
The TIR prism group 6 comprises a first prism 61 for combining with the DMD digital display module 5 and a second prism 62 for combining with the projection lens 7, the first prism 61 and the second prism 62 are bonded and fixed, an air space 63 is arranged at the joint of the first prism 61 and the second prism 62, the air space 63 is 9um-12um, in this embodiment, the air space 63 is 10 um; and the total reflection surface of the TIR prism group 6 is provided with an antireflection film with a large incident angle and a wide band.
When the incident light meets the condition that the incident angle is larger than the total reflection angle in the combined air gap between the inclined plane of the prism and the two prisms, the light is totally reflected. The anti-reflection film improves the light transmission capability of the TIR prism and reduces the light loss.
The light source module 1 includes a single lamp, a double lamp, or a multi lamp. Specifically, the light source module 1 of the present embodiment is an ultra-short inter-polar-distance high-efficiency UHP lamp with an ellipsoidal reflector. The light source of the bulb emits light at a large angle, typically greater than 50 degrees. When the incident light meets the condition that the incident angle is larger than the total reflection angle between the inclined surface of the first prism 61 and the air gap, the light is totally reflected.
As shown in fig. 2, the light enters the DMD digital display module 5 after being totally reflected by the TIR prism set 6. The DMD consists of a plurality of independently rotating micromirror arrays. The micro-mirror is controlled to be in an on state and an off state by the storage CMOS, and the pixel content is projected to an image surface by the reflected light of the micro-mirror. The data controls the micromirror rotation angle in a binary fashion, with the current devices being +12 degrees (on) and-12 degrees (off). In the "on" state, the micro mirror directs incident light into the projection lens 7. In the "off" state, the micro-mirrors reflect incident light out of the system.
The embodiment of the application also discloses a projection method.
Referring to fig. 3, the projection method, based on the projection apparatus, includes the following steps:
s1: the light source module 1 emits light. Specifically, the brightness of the light source module 1 can be adjusted, and the light emission has an illumination function.
S1-1: the light passes through a color device 8 that changes the color of the light beam;
s2: the luminous rays are zoomed by the condenser lens group 2; specifically, the condensing lens group 2 collimates the emitted light, thereby improving the utilization rate of the emitted light.
S3: the direction of the zooming luminescent light is changed by the reflector 3;
s4: the redirected and zoomed luminous light passes through the relay lens 4 to obtain light of a total reflection incident angle;
s5: the light rays with the total reflection incident angle pass through the TIR prism group 6, and the incident side of the TIR prism group 6 is used for receiving the light rays with the total reflection incident angle and reflecting the light rays to enter the DMD digital display module 5;
s6: the DMD digital display module 5 guides the image of the DMD into the projection lens 7 through the TIR prism group 6 or directly reflects the incident light out of the system.
The method comprises the following steps: the image of the DMD digital display module 5 is projected out through the projection lens 7, the image of the DMD is convenient to switch and update, and the LOGO pattern is convenient to switch and update; the utilization rate of the luminous light is high, and the effects of energy conservation and environmental protection are achieved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A projection device, characterized by: the digital display device comprises a light source module (1), a condenser group (2) used for collimating luminous rays of the light source module (1), a reflector (3) used for changing the angle of light beams passing through the condenser group (2), a relay lens (4) used for enabling the light beams passing through the reflector (3) to obtain a total reflection incidence angle, a DMD digital display module (5), a TIR prism group (6) and a projection lens (7), wherein the incidence side of the TIR prism group (6) is used for receiving the light beams of the total reflection incidence angle and reflecting the light beams to enter the DMD digital display module (5), and the DMD digital display module (5) is used for guiding the image of the DMD into the projection lens (7) or directly reflecting the incident light rays out of the system.
2. A projection device according to claim 1, wherein: a color device (8) for changing the color of the light beam is arranged between the light source module (1) and the condenser lens group (2), the color device (8) is a color wheel, and the color wheel is provided with a red area, a green area, a blue area and a white area.
3. A projection device according to claim 1, wherein: the projection lens (7) comprises a fixed focus lens or a zoom lens.
4. A projection device according to claim 3, wherein: the zoom lens comprises a focusing group (71), a zooming group (72) and a front fixing group (73), and incident light led into the projection lens (7) sequentially passes through the focusing group (71), the zooming group (72) and the front fixing group (73).
5. A projection device as claimed in claim 1, characterized in that: the TIR prism group (6) comprises a first prism (61) used for being combined with the DMD digital display module (5) and a second prism (62) used for being combined with the projection lens (7), the first prism (61) and the second prism (62) are fixedly bonded, an air gap (63) is arranged at the joint of the first prism (61) and the second prism (62), and an antireflection film with a large incident angle broadband is arranged on a total reflection surface of the TIR prism group (6).
6. A projection device as claimed in claim 4, characterized in that: and a light equalizing assembly (74) is arranged between the focusing group (71) and the zooming group (72).
7. A projection device according to claim 6, wherein: and a light equalizing component (74) is arranged between the zooming group (72) and the front fixing group (73).
8. A projection device as claimed in claim 7, characterized in that: the light homogenizing assembly (74) comprises a polygonal mirror or frosted glass.
9. A projection method based on a projection device as claimed in any one of claims 1-8, comprising the steps of:
s1: the light source module (1) emits luminous rays;
s2: the luminous rays are zoomed by the condenser lens group (2);
s3: the direction of the variable-focus luminous rays is changed through the reflector (3);
s4: the redirected and zoomed luminous light passes through a relay lens (4) to obtain light with a total reflection incident angle;
s5: the light rays with the total reflection incident angle pass through the TIR prism group (6), and the incident side of the TIR prism group (6) receives the light rays with the total reflection incident angle and reflects the light rays into the DMD digital display module (5);
s6: the DMD digital display module (5) guides the image of the DMD into a projection lens (7) through a TIR prism group (6) or directly reflects incident light out of the system.
10. A method of projection as claimed in claim 9, characterized in that: before step S2 is executed, the method includes the following steps:
s1-1: the luminous light passes through a color device (8) which changes the color of the light beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211657432.0A CN115981079A (en) | 2022-12-22 | 2022-12-22 | Projection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211657432.0A CN115981079A (en) | 2022-12-22 | 2022-12-22 | Projection method and device |
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| CN115981079A true CN115981079A (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211657432.0A Pending CN115981079A (en) | 2022-12-22 | 2022-12-22 | Projection method and device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1790096A (en) * | 2004-12-14 | 2006-06-21 | 斯曼特微显示科技（深圳）有限公司 | Projection system with total reflection prism |
| CN1842149A (en) * | 2005-08-01 | 2006-10-04 | 斯曼特技术有限公司 | Optical structure for projection system |
| CN104977700A (en) * | 2014-04-10 | 2015-10-14 | 徐熙平 | Optical system for DMD camera |
| CN108490623A (en) * | 2018-04-18 | 2018-09-04 | 广州市浩洋电子股份有限公司 | A kind of stage projecting light with double-colored wheel system |
| CN208283639U (en) * | 2018-06-14 | 2018-12-25 | 佛山市鼎莱光电科技有限公司 | A kind of optical lens system |
| CN217443726U (en) * | 2022-04-29 | 2022-09-16 | 峰米(重庆)创新科技有限公司 | Projection device |
-
2022
- 2022-12-22 CN CN202211657432.0A patent/CN115981079A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1790096A (en) * | 2004-12-14 | 2006-06-21 | 斯曼特微显示科技（深圳）有限公司 | Projection system with total reflection prism |
| CN1842149A (en) * | 2005-08-01 | 2006-10-04 | 斯曼特技术有限公司 | Optical structure for projection system |
| CN104977700A (en) * | 2014-04-10 | 2015-10-14 | 徐熙平 | Optical system for DMD camera |
| CN108490623A (en) * | 2018-04-18 | 2018-09-04 | 广州市浩洋电子股份有限公司 | A kind of stage projecting light with double-colored wheel system |
| CN208283639U (en) * | 2018-06-14 | 2018-12-25 | 佛山市鼎莱光电科技有限公司 | A kind of optical lens system |
| CN217443726U (en) * | 2022-04-29 | 2022-09-16 | 峰米(重庆)创新科技有限公司 | Projection device |
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