CN113204185A - Preparation method of holographic display element for holographic automobile tail lamp - Google Patents
Preparation method of holographic display element for holographic automobile tail lamp Download PDFInfo
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- CN113204185A CN113204185A CN202110505886.5A CN202110505886A CN113204185A CN 113204185 A CN113204185 A CN 113204185A CN 202110505886 A CN202110505886 A CN 202110505886A CN 113204185 A CN113204185 A CN 113204185A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 33
- 230000003287 optical effect Effects 0.000 claims abstract description 22
- 238000003384 imaging method Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000012805 post-processing Methods 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 14
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000011241 protective layer Substances 0.000 claims description 2
- 230000004075 alteration Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 230000000007 visual effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
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- 238000012545 processing Methods 0.000 description 2
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/10—Processes or apparatus for producing holograms using modulated reference beam
- G03H1/12—Spatial modulation, e.g. ghost imaging
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/0005—Adaptation of holography to specific applications
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Abstract
A method for preparing a holographic display element for a holographic automobile tail lamp relates to an automobile tail lamp. The method comprises the following steps: 1) exposing the first holographic film through a holographic imaging recording optical system I; 2) after post-processing, a transmission master plate holographic film is prepared; 3) reproducing the object image recorded by the transmission master plate hologram and using the object image as an object light source; 4) exposing the second hologram through the holographic imaging recording optical system II; 5) and after post-treatment, the holographic display element for the holographic automobile tail lamp is prepared. Based on a two-step holographic recording method, the diffraction efficiency is higher, and the aberration is small; the three-dimensional display has higher reality compared with the two-dimensional display; the holographic display element prepared by the two-step method forms a real image meeting the visual habits of people, and the added one-time holographic recording procedure is simpler, so that the method has no special requirements on preparation materials and does not need additional equipment and special elements.
Description
Technical Field
The invention relates to an automobile tail lamp, in particular to a preparation method of a holographic display element for a holographic automobile tail lamp.
Background
With the continuous progress of science and technology, the requirements of people on the quality of life are continuously improved. As an important vehicle, the automobile has long been inseparable in relation to the life of people. The requirements of people on automobiles are continuously improved, and people pay attention to the appearance of the automobiles while meeting the rigid requirements of performance, space and the like. Therefore, the holographic car light capable of projecting the three-dimensional stereo image meets the requirements of people on the appearance of the car and has strong modern technological sense. People can display automobile marks or some favorite three-dimensional patterns through the holographic projection automobile lamp. The existing holographic car lights are mostly holographic films obtained by one-step holographic recording, the holographic films obtained by the method have the defects of low diffraction efficiency, large aberration and the like, and the holographic films are unacceptable for people to pursue better car appearance, more real projection experience and clearer image requirements. The holographic film obtained by adopting the two-step holographic recording method can obtain higher diffraction efficiency and small aberration, and brings more real and more three-dimensional feeling to people. And the added one-time holographic recording procedure is simpler, and has no special requirement on preparation materials and does not need additional equipment and special elements.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a preparation method of a holographic display element for a holographic automobile tail lamp.
The invention comprises the following steps:
1) exposing the first holographic film through a holographic imaging recording optical system I;
2) after post-processing, a transmission master plate holographic film is prepared;
3) reproducing the object image recorded by the transmission master plate hologram and using the object image as an object light source;
4) exposing the second hologram through the holographic imaging recording optical system II;
5) and after post-treatment, the holographic display element for the holographic automobile tail lamp is prepared.
In step 1), the holographic imaging recording optical system I sequentially includes: the device comprises a laser light source, a beam splitter, a reflector, a beam expander, a collimating lens and a holographic film; the specific method for exposing the first hologram through the holographic imaging recording optical system I may be: the laser light source emits light rays, and the light rays are divided into object light and reference light after passing through the beam splitter; the object light is divided into two beams by the beam splitter, the two beams of object light are expanded by the beam expander after being reflected by the reflector, and then are irradiated on a shot object to generate diffuse reflection; the reference light passes through the reflector and then is expanded by the beam expander, after the beam expansion, the reference light is collimated by the collimating lens to form parallel light, and then the parallel light interferes with diffuse reflection light formed by irradiating the reference light on a shot object on the first holographic film to expose the first holographic film.
In step 4), the holographic imaging recording optical system II includes: the laser holographic film comprises a laser light source, a beam splitter, a reflector, a beam expander, a collimating lens, a transmission master holographic film and a second holographic film; the specific method for exposing the second hologram by the holographic imaging recording optical system II may be: the laser light source emits light rays, and the light rays are divided into object light and reference light after passing through the beam splitter; the object light is expanded by a beam expander, after the beam is expanded, the object light is collimated by a collimating lens to form parallel light to irradiate on the master plate holographic plate, and an image of an object recorded by the master plate holographic plate is reproduced to be used as an object light source; the reference light passes through the reflector and then is expanded by the beam expander, after being expanded, the reference light is collimated by the collimating lens to form parallel light, and then the parallel light and the reference light are interfered on the second holographic plate for exposure.
The holographic sheet is of a three-layer structure and comprises a surface protection layer, a middle photosensitive polymer layer and a base material layer.
In steps 1) and 4), the laser light source may employ a He — Ne laser having a wavelength of 632.8 nm;
the invention is based on a two-step holographic recording method, and has higher diffraction efficiency and small aberration compared with the existing method; on one hand, because most of the traditional car lamps are in two-dimensional display, the three-dimensional display holographic car tail lamp provided by the invention has higher authenticity compared with the two-dimensional display; on the other hand, the real image formed by one-step holographic display is an artifact, and the holographic display element prepared by the two-step method forms the real image meeting the visual habit of people, which is the advantage of the invention. And the added one-time holographic recording procedure is simpler, and has no special requirement on preparation materials and does not need additional equipment and special elements.
Drawings
FIG. 1 is a schematic structural diagram of a holographic automobile tail light.
FIG. 2 is a schematic structural diagram of a transmission master hologram obtained by processing a first hologram with a holographic imaging recording optical system I.
FIG. 3 is a schematic structural diagram of a holographic display element for a holographic automobile tail light obtained by processing a second hologram with a holographic imaging recording optical system II.
FIG. 4 is a schematic diagram of a hologram sheet structure required in the process of manufacturing a holographic display element.
Detailed description of the invention
The following examples will further describe the present invention with reference to the accompanying drawings.
As shown in FIG. 1, a holographic vehicular lamp structure includes a light source, a beam expander, a holographic display element, and an automotive lamp cover. The light source 1 is used for emitting light, the beam expander 2 expands the light, the expanded light reaches the holographic display element 3 behind the beam expander 2 and generates a diffraction effect to form reconstruction light, and after the reconstruction light passes through the automobile lamp shade 4, a three-dimensional image is reconstructed behind the automobile lamp shade 4.
The holographic display element is obtained by a two-step holographic recording method.
The two-step holographic recording method comprises the steps of firstly preparing a transmission master hologram through a holographic imaging recording optical system I, then taking the transmission master hologram as an object light source, and preparing the holographic display element through a holographic imaging recording optical system II.
As shown in fig. 2, the holographic-imaging recording optical system I includes: He-Ne laser I5, a first beam splitter 6, a second beam splitter 7, a first reflector 9, a second reflector 10, a first beam expander 12, a second beam expander 13, a third beam expander 11, a first collimating lens 15 and a first holographic chip 16. The He-Ne laser I5 is used as a light source to emit light, the light is divided into object light and reference light after passing through a first beam splitter 6, the object light is divided into two beams through a second beam splitter 7, the two beams of object light are respectively reflected by a first reflector 9 and a second reflector 10, expanded by a first beam expander 12 and a second beam expander 13 and then irradiated on a photographed object 14 to generate diffuse reflection, the reference light is expanded by a third beam expander 11 after passing through a third reflector 8, collimated by a first collimating lens 15 to form parallel light after being expanded, and then interfered on a first holographic sheet 16 with the diffuse reflection light formed by irradiating the reference light on the photographed object 14; after exposure, the first hologram 16 is post-processed to obtain a transmission master hologram.
As shown in fig. 3, the holographic-imaging recording optical system II includes: He-Ne laser II 17, third beam splitter 18, fourth reflector 19, fifth reflector 20, fourth beam expander 21, fifth beam expander 22, second collimating lens 23, third collimating lens 24, transmission master hologram 25 and second hologram 26. The He-Ne laser II 17 is used as a light source to emit light rays, and the light rays are divided into object light and reference light after passing through a third beam splitter 18; the object light is expanded by the fourth beam expander 21, collimated by the second collimating lens 23 after being expanded to form parallel light to irradiate on the transmission master hologram 25, and an image of an object recorded by the transmission master hologram 25 is reproduced as object light; the reference light passes through a fourth reflector 19 and a fifth reflector 20, then is expanded by a fifth beam expander 22, is collimated by a third collimating lens 24 after being expanded to form parallel light, and then interferes with object light on a second holographic plate 26; after the exposure is completed, the second hologram 26 is post-processed to obtain the holographic display element for the holographic automobile tail lamp.
As shown in FIG. 4, the hologram sheet required for the production of the holographic display element according to the present invention has a three-layer structure comprising, in order from top to bottom, a surface protective layer 27, an intermediate photopolymer layer 28 and a substrate layer 29.
The holographic optical system I is used for exposing a first holographic film, a transmission master plate holographic film is prepared after post-treatment, an object image recorded by the transmission master plate holographic film is reproduced and is used as an object light source, a holographic optical system II is used for exposing a second holographic film, and the holographic film for the holographic car lamp is prepared after post-treatment. The method is based on a two-step holographic recording method, has the advantages of higher diffraction efficiency, small aberration and the like compared with the existing method, and the added one-step holographic recording process is simpler, so that the method has no special requirements on preparation materials and does not need additional equipment and special elements.
Claims (9)
1. A preparation method of a holographic display element for a holographic automobile tail lamp is characterized by comprising the following steps:
1) exposing the first holographic film through a holographic imaging recording optical system I;
2) after post-processing, a transmission master plate holographic film is prepared;
3) reproducing the object image recorded by the transmission master plate hologram and using the object image as an object light source;
4) exposing the second hologram through the holographic imaging recording optical system II;
5) and after post-treatment, the holographic display element for the holographic automobile tail lamp is prepared.
2. The method of claim 1, wherein in step 1), the holographic imaging recording optical system I comprises in sequence: laser light source, beam splitter, reflector, beam expander, collimating lens, holographic plate.
3. The method for preparing a holographic display element for holographic automobile tail light as claimed in claim 1, wherein in step 1), the specific method for exposing the first holographic plate by the holographic imaging recording optical system I is as follows: the laser light source emits light rays, and the light rays are divided into object light and reference light after passing through the beam splitter; the object light is divided into two beams by the beam splitter, the two beams of object light are expanded by the beam expander after being reflected by the reflector, and then are irradiated on a shot object to generate diffuse reflection; the reference light passes through the reflector and then is expanded by the beam expander, after the beam expansion, the reference light is collimated by the collimating lens to form parallel light, and then the parallel light interferes with diffuse reflection light formed by irradiating the reference light on a shot object on the first holographic film to expose the first holographic film.
4. The method of claim 1, wherein in step 1), the first holographic sheet has a three-layer structure comprising a surface protective layer, an intermediate photopolymer layer and a substrate layer.
5. The method of claim 2, wherein the laser source is a He-Ne laser having a wavelength of 632.8 nm.
6. The method of claim 1, wherein in step 4), the holographic imaging recording optical system II comprises: the holographic laser comprises a laser light source, a beam splitter, a reflector, a beam expander, a collimating lens, a transmission master plate holographic plate and a second holographic plate.
7. The method for preparing the holographic display element for the holographic automobile tail light as claimed in claim 1, wherein in the step 4), the specific method for exposing the second hologram by the holographic imaging recording optical system II is as follows: the laser light source emits light rays, and the light rays are divided into object light and reference light after passing through the beam splitter; the object light is expanded by a beam expander, after the beam is expanded, the object light is collimated by a collimating lens to form parallel light to irradiate on the master plate holographic plate, and an image of an object recorded by the master plate holographic plate is reproduced to be used as an object light source; the reference light passes through the reflector and then is expanded by the beam expander, after being expanded, the reference light is collimated by the collimating lens to form parallel light, and then the parallel light and the reference light are interfered on the second holographic plate for exposure.
8. The method of claim 1, wherein in the step 4), the second hologram has a three-layer structure of a surface protection layer, an intermediate photosensitive polymer layer and a substrate layer.
9. The method of claim 6, wherein the laser source is a He-Ne laser having a wavelength of 632.8 nm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110505886.5A CN113204185A (en) | 2021-05-10 | 2021-05-10 | Preparation method of holographic display element for holographic automobile tail lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110505886.5A CN113204185A (en) | 2021-05-10 | 2021-05-10 | Preparation method of holographic display element for holographic automobile tail lamp |
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| CN113204185A true CN113204185A (en) | 2021-08-03 |
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| CN202110505886.5A Pending CN113204185A (en) | 2021-05-10 | 2021-05-10 | Preparation method of holographic display element for holographic automobile tail lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115167089A (en) * | 2022-06-06 | 2022-10-11 | 中国第一汽车股份有限公司 | Holographic projection system and method for vehicle, computer medium and vehicle with holographic car logo |
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| CN101034252A (en) * | 2007-04-10 | 2007-09-12 | 苏州苏大维格数码光学有限公司 | Projection screen having image plane holographic structure |
| US20100309465A1 (en) * | 2009-06-05 | 2010-12-09 | The Penn State Research Foundation | Coherent anti-stokes raman holography |
| US20120327490A1 (en) * | 2011-05-20 | 2012-12-27 | Massachusetts Institute Of Technology | System, method and apparatus for phase-coded multi-plane microscopy |
| CN109613810A (en) * | 2018-12-28 | 2019-04-12 | 马瑞利汽车零部件(芜湖)有限公司 | A kind of lamp system with three-dimensional stereo effect |
| CN112400126A (en) * | 2018-06-28 | 2021-02-23 | 卡尔蔡司耶拿有限责任公司 | Vehicle lighting device |
-
2021
- 2021-05-10 CN CN202110505886.5A patent/CN113204185A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101034252A (en) * | 2007-04-10 | 2007-09-12 | 苏州苏大维格数码光学有限公司 | Projection screen having image plane holographic structure |
| US20100309465A1 (en) * | 2009-06-05 | 2010-12-09 | The Penn State Research Foundation | Coherent anti-stokes raman holography |
| US20120327490A1 (en) * | 2011-05-20 | 2012-12-27 | Massachusetts Institute Of Technology | System, method and apparatus for phase-coded multi-plane microscopy |
| CN112400126A (en) * | 2018-06-28 | 2021-02-23 | 卡尔蔡司耶拿有限责任公司 | Vehicle lighting device |
| CN109613810A (en) * | 2018-12-28 | 2019-04-12 | 马瑞利汽车零部件(芜湖)有限公司 | A kind of lamp system with three-dimensional stereo effect |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115167089A (en) * | 2022-06-06 | 2022-10-11 | 中国第一汽车股份有限公司 | Holographic projection system and method for vehicle, computer medium and vehicle with holographic car logo |
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Application publication date: 20210803 |
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