Dynamic hologram manufacturing method, dynamic hologram film and light response method

Abstract

The invention discloses a dynamic hologram manufacturing method, a dynamic hologram film and a light response method, and belongs to the technical field of holography. The photoresponsive dynamic hologram film comprises a base material layer, an information layer and a protective layer, the information layer is provided with holographic stripes capable of responding to external illumination. The defect that a traditional hologram cannot perform dynamic response display on incoherent light illumination is overcome, and the design freedom degree of the hologram is greatly increased by arranging the dynamic hologram film capable of responding to the incoherent light illumination; meanwhile, the light response form is novel, and no matter whether bright ambient light illumination exists or not, the hologram can achieve dynamic responses such as display and hiding of the preset pattern and movement and zooming of the pattern along with the light source under specified incoherent light source illumination, and the dynamic responses cannot be achieved through a traditional hologram. And the photoresponse hologram has distinct characteristics, and the dynamic image is lifelike, so that the photoresponse hologram is very easy to identify and memorize by common people.

Description

Technical Field

[0001] The invention relates to a dynamic hologram production method, a dynamic hologram film and a light response method, and belongs to the technical field of holography. Background Art

[0002] Holographic technology records the wavefront information of light waves through interference, and then restores and reproduces the wavefront information of light waves through diffraction, which can realize the recording and display of true three-dimensional images. Holograms are the carriers of three-dimensional information, which are composed of many complex grating structures at the micro-nano level. According to common sense in the field, in order to obtain high-quality holograms, almost harsh vibration isolation conditions are required when making holograms. Moving objects will introduce vibrations, so it is difficult for traditional holographic technology to produce high-quality dynamic holograms.

[0003] Computer-generated holograms can use the computational process to calculate interference fringes and then output them to form a hologram, thus avoiding the vibration problem caused by moving objects.

[0004] However, computational holograms cannot respond to changes in external lighting, so their scope of use is limited.

[0005] The light response characteristic can inject new vitality into holograms, and they are widely used in display, security and anti-counterfeiting, virtual reality / augmented reality, etc. Existing technologies cannot meet this demand, so there is an urgent need for a hologram that can respond to external light.

[0006] The information disclosed in this Background Art is only for understanding the background of the inventive concept and therefore it may include information that does not constitute the prior art. Summary of the invention

[0007] In view of the above problem or one of the above problems, an object of the present invention is to provide a method for producing a dynamic hologram. By constructing an image acquisition model, a hologram simulation model, a holographic fringe generation model, and a holographic dynamic display effect generation model, a hologram that can be dynamically displayed is obtained, and the production of a dynamic hologram that can respond to light is realized, thereby effectively overcoming the shortcoming that traditional holograms cannot dynamically respond to incoherent light illumination and display. The hologram can respond to incoherent light illumination, greatly increasing the design freedom of the hologram. The scheme is scientific, reasonable, and feasible.

[0008] In response to the above problem or one of the above problems, the second object of the present invention is to provide a dynamic hologram production method, a dynamic hologram film and a light response method, which can generate a light response hologram with distinctive characteristics. The dynamic image is lifelike and very easy to be recognized and remembered by ordinary people. It is particularly suitable for display, security and anti-counterfeiting, virtual reality / augmented reality and other fields.

[0009] In response to the above problem or one of the above problems, the third object of the present invention is to provide a dynamic hologram production method, a dynamic hologram film and a light response method. The light response form is novel. Regardless of whether there is bright ambient light illumination, under the illumination of a specified incoherent light source, the hologram can realize dynamic responses such as displaying and hiding of preset patterns, movement and scaling of patterns with the light source, etc.

[0010] To achieve one of the above purposes, the first technical solution of the present invention is:

[0011] A method for producing a dynamic hologram capable of light response, comprising the following contents:

[0012] Obtain the preset patterns and dynamic effects that need to be displayed through the pre-built image acquisition model;

[0013] Use pre-built hologram simulation models to set up preset holograms based on preset patterns, dynamic effects, and lighting conditions;

[0014] A pre-built holographic fringe generation model is used to decompose a preset hologram into holographic units. The holographic fringes in the holographic units are determined based on the light field, dynamic effect, illumination condition and optical coupling relationship of the preset pattern in the preset hologram, and are used to dynamically respond to external illumination.

[0015] Holographic stripes are generated according to a pre-constructed holographic dynamic display effect generation model and / or a holographic stripe physical output device to obtain a hologram that can be dynamically displayed, thereby realizing the production of a dynamic hologram that can respond to light.

[0016] After continuous exploration and experimentation, the present invention obtains a hologram that can be dynamically displayed by constructing an image acquisition model, a hologram simulation model, a holographic fringe generation model, and a holographic dynamic display effect generation model, thereby realizing the production of a dynamic hologram that can respond to light. This can effectively overcome the shortcoming that traditional holograms cannot dynamically respond to incoherent light illumination, and can respond to incoherent light illumination, greatly increasing the design freedom of the hologram.

[0017] At the same time, the method for producing the light-responsive hologram of the present invention is simple, practical, feasible, easy to produce, and suitable for mass production.

[0018] Furthermore, the light-responsive hologram of the present invention has distinct features and lifelike dynamic images, which are very easy to be recognized and remembered by ordinary people. It is particularly suitable for display, security and anti-counterfeiting, virtual reality / augmented reality and other fields.

[0019] The model in this application is an object that objectively describes the morphological structure with the help of physical or virtual representation. The object is not equal to the object and is not limited to physical and virtual. It can be a data processing function, software program, processing mode, usage method, operation method, workflow, application process, electronic hardware, circuit module, processing system, system imitation or simulation object.

[0020] As the preferred technical measures:

[0021] The preset pattern is a single plane pattern or / and multiple plane patterns with a certain depth or a multi-plane single pattern or / and multiple patterns with discrete depths or a three-dimensional model pattern with continuous depth, and its shape is a geometric pattern or / and a text pattern or / and a plant pattern or / and an animal pattern or / and a human pattern or / and a landscape pattern or / and an artifact pattern or / and a natural phenomenon pattern or / and a virtual digital pattern;

[0022] The dynamic effects are: translation, rotation, scaling of a single pattern, or / and, relative translation, rotation, scaling of multiple patterns.

[0023] As the preferred technical measures:

[0024] Using the pre-built hologram simulation model, the method to set up a preset hologram based on preset patterns, dynamic effects, and lighting conditions is as follows:

[0025] Acquiring characteristic information of an incoherent lighting source; the incoherent lighting source includes an incoherent point light source, a near point light source, a parallel light source or a pre-set extended light source;

[0026] Generate lighting conditions based on characteristic information of the incoherent light source;

[0027] Setting a preset hologram based on lighting conditions, dynamic effects and preset patterns, and according to a hologram transformation algorithm;

[0028] The hologram transformation algorithm is an accurate Fourier transform hologram algorithm, a defocused Fourier transform hologram algorithm, a fractional Fourier transform hologram algorithm or a large depth of field Fresnel hologram algorithm.

[0029] As the preferred technical measures:

[0030] Using the pre-built holographic fringe generation model, the method of obtaining holographic fringe according to the preset hologram is as follows:

[0031] According to the preset hologram, a number of holographic units are set;

[0032] Arrange several holographic units closely to obtain a holographic unit array;

[0033] The holographic stripes in the holographic unit are determined according to the light field of the preset pattern in the preset hologram, the dynamic effect, the illumination condition and the optical coupling relationship among the three, and are used to dynamically respond to the external illumination;

[0034] The optical coupling relationship includes: a dynamic moiré imaging relationship between an incoherent light source, a holographic unit and a preset pattern; a holographic coupled wave imaging relationship between an incoherent light source and a holographic unit; and a far-field diffraction array imaging relationship between a holographic unit and a preset pattern.

[0035] As the preferred technical measures:

[0036] The method for generating holographic stripes according to the pre-built holographic dynamic display effect generation model and the holographic stripe physical output device to obtain a hologram that can be dynamically displayed is as follows:

[0037] According to the holographic fringes, a far-field diffraction light field based on a preset pattern and its dynamic effect interferes with a reference light field corresponding to a set lighting condition to form a hologram; the hologram is decomposed into holographic units, and all holographic units are physically outputted using the holographic fringes to obtain a dynamic hologram film object with light response;

[0038] The hologram is an accurate Fourier transform hologram including a preset pattern, a defocused Fourier transform hologram, a fractional Fourier transform hologram, or a large depth of field Fresnel hologram.

[0039] As the preferred technical measures:

[0040] The method to obtain an accurate Fourier transform hologram is as follows:

[0041] The preset pattern is located on the front focal plane of the Fourier transform lens, and the accurate Fourier transform hologram is formed by the interference of the light field on the back focal plane and the reference light incident on the opposite side or the same side, which is located on the back focal plane of the Fourier transform lens;

[0042] Or / and, the method of obtaining a positive defocused Fourier transform hologram is as follows:

[0043] The preset pattern is located on the front focal plane of the Fourier transform lens, and the positive defocused Fourier transform hologram is formed by the interference of the light field on the output surface and the reference light incident on the opposite side or the same side, and the hologram is located on the output surface beyond one focal length of the Fourier transform lens;

[0044] Or / and, the method of obtaining a negative defocus Fourier transform hologram is as follows:

[0045] The preset pattern is located on the front focal plane of the Fourier transform lens, and the positive defocused Fourier transform hologram is formed by the interference of the light field on the output surface and the reference light incident on the opposite side or the same side, and the hologram is located on the output surface between the Fourier transform lens and the rear focal plane thereof;

[0046] Or / and, the method to obtain the fractional Fourier transform hologram is as follows:

[0047] The preset pattern is located on the input surface between the Fourier transform lens and its front focal plane, and the fractional Fourier transform hologram is formed by the interference of the light field on the output surface and the reference light incident on the opposite side or the same side, and the hologram is located on the output surface between the Fourier transform lens and its rear focal plane;

[0048] Or / and, the method of obtaining a Fresnel hologram with a large depth of field is as follows:

[0049] The preset pattern is located on the input surface, and the large depth of field Fresnel hologram is generated by the distance hologram. Figure 1 The light field on the input surface at a certain distance is formed by the interference of the light field formed by Fresnel diffraction and the reference light incident from the opposite side or the same side, and the hologram is located on the output surface;

[0050] The distance between the input surface and the output surface is greater than the depth of field of the large-depth-of-field Fresnel hologram under ordinary diffuse light or extended light source illumination conditions.

[0051] To achieve one of the above purposes, the second technical solution of the present invention is:

[0052] A light-responsive dynamic hologram film, comprising a substrate layer, an information layer, and a protective layer;

[0053] The information layer is located between the substrate layer and the protective layer; the information layer is provided with holographic stripes that can respond to external illumination; the holographic stripes include a closely arranged holographic unit array;

[0054] Each holographic unit in the holographic unit array is provided with a far-field hologram capable of forming a preset pattern or at least a part of the preset pattern;

[0055] The far-field hologram is composed of holographic fringes formed by the interference of the far-field diffraction light field of the preset pattern or at least part of the preset pattern with a set reference light field, and is used to respond to changes in external illumination light sources and produce a dynamic holographic imaging effect.

[0056] The present invention overcomes the disadvantage that the traditional hologram cannot dynamically respond to incoherent light illumination. By providing a dynamic hologram film that can respond to incoherent light illumination, the design freedom of the hologram is greatly increased. At the same time, the light-responsive hologram film of the present invention has a simple structure, is easy to copy, and is suitable for mass production. In addition, the light-responsive hologram of the present invention has distinct characteristics, and the dynamic image is lifelike, which is very easy to be recognized and remembered by ordinary people.

[0057] As the preferred technical measures:

[0058] The far-field hologram includes an accurate Fourier transform hologram of a preset pattern or / and a defocused Fourier transform hologram or / and a fractional Fourier transform hologram or / and a Fresnel hologram with a large depth of field;

[0059] The preset pattern includes a single plane single pattern with a certain depth or / and multiple patterns or / and a multi-plane single pattern with discrete depth or / and multiple patterns or / and a three-dimensional model pattern with continuous depth;

[0060] The light source is an incoherent light source, including an incoherent point light source and / or a near point light source and / or a parallel light source and / or a preset extended light source.

[0061] To achieve one of the above purposes, the third technical solution of the present invention is:

[0062] A light response method based on a dynamic hologram film, using the above-mentioned light response dynamic hologram film, includes the following contents:

[0063] In a bright environment, when the set light source is turned on, the hologram displays a preset pattern visible to the human eye, and when the set light source is turned off, the preset pattern is invisible to the human eye;

[0064] In a bright environment, when a set light source is turned on, the preset pattern can move with the movement of the set light source;

[0065] Under the condition that the set light source is turned on, the preset pattern can be scaled along with the movement of the set light source.

[0066] The present invention overcomes the shortcoming that traditional holograms cannot dynamically respond to incoherent light illumination. By setting a dynamic hologram film that can respond to incoherent light illumination, the design freedom of the hologram is greatly increased. At the same time, the light response form is novel. Regardless of whether there is bright ambient light illumination, under the illumination of a specified incoherent light source, the hologram of the present invention can realize dynamic responses such as displaying and hiding a preset pattern, moving and scaling the pattern with the light source, which is impossible for traditional holograms. At the same time, the light-responsive hologram film of the present invention has a simple structure, is easy to copy, and is suitable for mass production. In addition, the light-responsive hologram has distinct characteristics, and the dynamic image is lifelike, which is very easy to be recognized and remembered by ordinary people.

[0067] As the preferred technical measures:

[0068] The mobile form includes the following:

[0069] When the light source is set to translate parallel to the hologram surface, the preset pattern translates in the same direction as the light source; when the light source is set to rotate clockwise around an axis perpendicular to the hologram on a plane parallel to the hologram, the preset pattern rotates clockwise around the axis perpendicular to the hologram; when the light source is set to rotate counterclockwise around an axis perpendicular to the hologram on a plane parallel to the hologram, the preset pattern rotates counterclockwise around the axis perpendicular to the hologram along with the light source;

[0070] Or, when the preset light source is translated along a surface parallel to the hologram, the preset pattern is translated in the opposite direction relative to the preset light source;

[0071] When the light source is set to rotate clockwise around an axis perpendicular to the hologram on a plane parallel to the hologram, the preset pattern rotates counterclockwise around the axis perpendicular to the hologram; when the light source is set to rotate counterclockwise around an axis perpendicular to the hologram on a plane parallel to the hologram, the preset pattern rotates clockwise around the axis perpendicular to the hologram;

[0072] Or / and, the scaling form includes the following:

[0073] When the light source is set to move upward perpendicular to the hologram surface, the preset pattern is enlarged, and when the light source is set to move downward perpendicular to the hologram surface, the preset pattern is reduced; or, when the light source is set to move upward perpendicular to the hologram surface, the preset pattern is reduced, and when the light source is set to move downward perpendicular to the hologram surface, the preset pattern is enlarged; or, when the light source is set to move upward perpendicular to the hologram surface, the preset pattern is first reduced and then enlarged, and when the light source is set to move downward perpendicular to the hologram surface, the preset pattern is first enlarged and then reduced; or, when the light source is set to move upward perpendicular to the hologram surface, the preset pattern is first enlarged and then reduced, and when the light source is set to move downward perpendicular to the hologram surface, the preset pattern is first reduced and then enlarged;

[0074] Or / and, the hologram is a reflective volume hologram or a transmissive plane hologram.

[0075] To achieve one of the above purposes, the fourth technical solution of the present invention is:

[0076] An electronic device comprising:

[0077] one or more processors;

[0078] A storage device for storing one or more programs;

[0079] When the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned method for producing a dynamic hologram capable of light response.

[0080] To achieve one of the above purposes, the fifth technical solution of the present invention is:

[0081] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the above-mentioned method for producing a dynamic hologram capable of light response.

[0082] Compared with the prior art solutions, the present invention has the following beneficial effects:

[0083] After continuous exploration and experimentation, the present invention obtains a hologram that can be dynamically displayed by constructing an image acquisition model, a hologram simulation model, a holographic fringe generation model, and a holographic dynamic display effect generation model, thereby realizing the production of a dynamic hologram that can respond to light. This can effectively overcome the shortcoming that traditional holograms cannot dynamically respond to incoherent light illumination, and can respond to incoherent light illumination, greatly increasing the design freedom of the hologram.

[0084] At the same time, the method for producing the light-responsive hologram of the present invention is simple, practical, feasible, easy to produce, and suitable for mass production.

[0085] Furthermore, the light-responsive hologram of the present invention has distinct features and lifelike dynamic images, which are very easy to be recognized and remembered by ordinary people. It is particularly suitable for display, security and anti-counterfeiting, virtual reality / augmented reality and other fields.

[0086] Furthermore, the light response form of the present invention is novel. Regardless of whether there is bright ambient light illumination or not, under the illumination of a specified incoherent light source, the hologram of the present invention can realize dynamic responses such as displaying and hiding of preset patterns, movement and scaling of patterns with the light source, etc., which is impossible for traditional holograms. BRIEF DESCRIPTION OF THE DRAWINGS

[0087] Figure 1 A schematic diagram of a process of making a dynamic hologram according to the present invention;

[0088] Figure 2 and Figure 3 The first structure of the light-responsive dynamic hologram film of the present invention and its light response schematic diagram;

[0089] Figure 4 and Figure 5 The second structure of the light-responsive dynamic hologram film of the present invention and its light response schematic diagram;

[0090] Figure 6 and Figure 7 The third structure of the light-responsive dynamic hologram film of the present invention and a schematic diagram of its light response;

[0091] Figure 8 and Fig. 9The fourth structure of the light-responsive dynamic hologram film of the present invention and a schematic diagram of its light response;

[0092] Fig.10 The fifth structure of the light-responsive dynamic hologram film of the present invention and a schematic diagram of its light response;

[0093] Fig.11 The sixth structure of the light-responsive dynamic hologram film of the present invention and a schematic diagram of its light response;

[0094] Fig.12 and Fig.13 The seventh structure of the light-responsive dynamic hologram film of the present invention and a schematic diagram of its light response;

[0095] Fig.14 and Fig.15 The eighth structure of the light-responsive dynamic hologram film of the present invention and a schematic diagram of its light response;

[0096] Fig.16 and Fig.17 The ninth structure of the light-responsive dynamic hologram film of the present invention and a schematic diagram of its light response;

[0097] Fig.18 A schematic diagram of the accurate Fourier transform hologram and its optical response of the present invention;

[0098] Fig.19 A schematic diagram of a positive defocused Fourier transform hologram and its optical response of the present invention;

[0099] Fig. 20 A schematic diagram of a negative defocused Fourier transform hologram and its optical response of the present invention;

[0100] Fig.21 A schematic diagram of the fractional Fourier transform hologram and its optical response of the present invention;

[0101] Fig. 22 A schematic diagram of a large depth of field Fresnel hologram and its light response according to the present invention;

[0102] Fig.23 An effect diagram of the auspicious cloud pattern of the present invention displayed when a preset approximate point light source is turned on;

[0103] Fig.24 It is an effect diagram of hiding the auspicious cloud pattern of the present invention when the preset approximate point light source is turned off;

[0104] Fig.25 , Fig.26 , Fig. 27 This is an effect diagram of the auspicious cloud pattern of the present invention moving in the same direction as the preset light source moves;

[0105] Fig.28 A schematic diagram of the principle of the dynamic light response of the present invention. DETAILED DESCRIPTION

[0106] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0107] On the contrary, the present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention. Those skilled in the art can fully understand the present invention without the description of these details.

[0108] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention pertains. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0109] like Figure 1 As shown, the first specific embodiment of the method for producing a dynamic hologram capable of light response of the present invention is as follows:

[0110] A method for producing a dynamic hologram capable of light response, comprising the following contents:

[0111] Obtain the preset patterns and dynamic effects that need to be displayed through the pre-built image acquisition model;

[0112] Use pre-built hologram simulation models to set up preset holograms based on preset patterns, dynamic effects, and lighting conditions;

[0113] A pre-built holographic fringe generation model is used to decompose a preset hologram into holographic units. The holographic fringes in the holographic units are determined based on the light field, dynamic effect, illumination condition and optical coupling relationship of the preset pattern in the preset hologram, and are used to dynamically respond to external illumination.

[0114] Holographic stripes are generated according to a pre-constructed holographic dynamic display effect generation model and / or a holographic stripe physical output device to obtain a hologram that can be dynamically displayed, thereby realizing the production of a dynamic hologram that can respond to light.

[0115] The second specific embodiment of the method for producing a dynamic hologram capable of light response of the present invention:

[0116] A method for producing a dynamic hologram capable of light response, comprising the following contents:

[0117] Obtain the preset pattern to be displayed through the pre-built image acquisition model;

[0118] Using pre-built hologram simulation models, set up preset holograms based on preset patterns and lighting conditions;

[0119] Using a pre-built holographic fringe generation model, holographic fringes are obtained according to a preset hologram to dynamically respond to external illumination;

[0120] According to the pre-constructed holographic dynamic display effect generation model, a hologram capable of dynamic display is obtained based on the holographic stripes, thereby realizing the production of a dynamic hologram capable of light response.

[0121] The first specific embodiment of the light-responsive dynamic hologram film of the present invention:

[0122] See also Figure 2 and Figure 3 , is a structure of a light-responsive dynamic hologram film in this embodiment, and a schematic diagram of its light response.

[0123] The light-responsive dynamic hologram film HF in this embodiment is composed of a substrate layer 1, an information layer 2, and a protective layer 3. The three-layer structure is bonded to each other to form a film. The information layer records holographic stripes that can respond to external lighting. The information layer 2 is composed of a closely arranged holographic unit array 21, and the holographic unit array is composed of holographic units 211 arranged in an array. Each holographic unit in the holographic unit array records an accurate Fourier transform hologram of a preset single-depth plane pattern 6. The hologram is a reflective volume hologram.

[0124] The dynamic hologram film has the following light response characteristics. Figure 2 As shown, when the approximate point light source 5 is turned off, the dynamic hologram film HF is illuminated by the extended light source 4, and the human eye cannot see the plane pattern 6. Figure 3 As shown, when the approximate point light source 5 is turned on, the dynamic hologram film HF is illuminated by the extended light source 4, and the human eye can see the plane pattern 6 at a certain depth. The approximate point light source 5 is preferably an LED flashlight configured in a smart phone.

[0125] The second specific embodiment of the light-responsive dynamic hologram film of the present invention:

[0126] See also Figure 4 and Figure 5 , is a structure of a light-responsive dynamic hologram film in this embodiment, and a schematic diagram of its light response.

[0127] The light-responsive dynamic hologram film HF in this embodiment is composed of a substrate layer 1, an information layer 2, and a protective layer 3. The three-layer structure is bonded to each other to form a film. The information layer records holographic stripes that can respond to external lighting. The information layer 2 is composed of a closely arranged holographic unit array 21, and the holographic unit array is composed of holographic units 1 211 arranged. Each holographic unit in the holographic unit array records a positive defocused Fourier transform hologram of a plane pattern 1 61 and a plane pattern 2 62 at two preset depths. The hologram is a reflective volume hologram.

[0128] The dynamic hologram film has the following light response characteristics. Figure 4 and Figure 5 As shown, when the approximate point light source 5 is turned on, the human eye can see the plane pattern 1 61 and the plane pattern 2 62 at a preset depth under the illumination of the extended light source 4. Figure 4 As shown in FIG. 1 , when the approximate point light source 5 moves to the right at a speed V1 along a plane parallel to the plane where the hologram film is located, the plane pattern 1 61 and the plane pattern 2 62 move to the right at a speed V2. Figure 5 When the approximate point light source 5 moves to the left at a speed V3 along a plane parallel to the plane where the hologram film is located, the plane pattern 1 61 and the plane pattern 2 62 move to the left at a speed V3.

[0129] The third specific embodiment of the light-responsive dynamic hologram film of the present invention:

[0130] See also Figure 6 and Figure 7 , is a structure of a light-responsive dynamic hologram film in this embodiment, and a schematic diagram of its light response.

[0131] The light-responsive dynamic hologram film HF in this embodiment is composed of a substrate layer 1, an information layer 2, and a protective layer 3. The three-layer structure is bonded to each other to form a film. The information layer records holographic stripes that can respond to external lighting. The information layer 2 is composed of a closely arranged holographic unit array 21, and the holographic unit array is composed of a holographic unit two 212 and a holographic unit three 213. The holographic unit two 212 records a positive defocused Fourier transform hologram of a plane pattern three 63 at a preset depth, and the holographic unit three 213 records a negative defocused Fourier transform hologram of a plane pattern four 64 at a preset depth. The hologram is a reflective volume hologram.

[0132] The dynamic hologram film has the following light response characteristics. Figure 6As shown, when the approximate point light source 5 is turned on, the human eye can see the plane pattern three 63 and the plane pattern four 64 at a preset depth under the illumination of the extended light source 4. The plane pattern three 63 is suspended below the holographic film HF, and the plane pattern four 64 is suspended above the holographic film HF. Figure 7 When the approximate point light source 5 rotates clockwise at a speed V5 around an axis perpendicular to the hologram film, the plane pattern three 63 rotates clockwise at a speed V7 around an axis perpendicular to the hologram film, and the plane pattern four 64 rotates counterclockwise at a speed V6 around an axis perpendicular to the hologram film.

[0133] The fourth specific embodiment of the light-responsive dynamic hologram film of the present invention:

[0134] See also Figure 8 and Fig. 9 , is a structure of a light-responsive dynamic hologram film in this embodiment, and a schematic diagram of its light response.

[0135] The light-responsive dynamic hologram film HF in this embodiment is composed of a substrate layer 1, an information layer 2, and a protective layer 3. The three-layer structure is bonded to each other to form a film. The information layer records holographic stripes that can respond to external lighting. The information layer 2 is composed of a closely arranged holographic unit array 21, and the holographic unit array is composed of a holographic unit four 214 and a holographic unit five 215. The holographic unit four 214 records a positive defocused Fourier transform hologram of a plane pattern six 66 at a preset depth, and the holographic unit five 215 records a negative defocused Fourier transform hologram of a plane pattern seven 67 at a preset depth. The hologram is a reflective volume hologram.

[0136] The dynamic hologram film has the following light response characteristics. Figure 8 and 9 As shown, when the approximate point light source 5 is turned on, the human eye can see the plane pattern six 66 and the plane pattern seven 67 at the preset depth under the illumination of the extended light source 4. The plane pattern six 66 is suspended below the holographic film HF, and the plane pattern seven 67 is suspended above the holographic film HF. Figure 8 When the approximate point light source 5 moves downward along the axis perpendicular to the hologram film at a speed V8, the plane pattern 66 moves upward along the axis perpendicular to the hologram film at a speed V10, and the plane pattern 66 keeps shrinking. The plane pattern 7 67 moves upward along the axis perpendicular to the hologram film at a speed V9, and the plane pattern 7 67 keeps expanding.

[0137] like Fig. 9As shown, when the approximate point light source 5 moves upward along the axis perpendicular to the hologram film at a speed V8, the plane pattern 66 moves downward along the axis perpendicular to the hologram film at a speed V10, and the plane pattern 66 is continuously enlarged. The plane pattern 7 67 moves downward along the axis perpendicular to the hologram film at a speed V9, and the plane pattern 7 67 is continuously reduced.

[0138] The fifth specific embodiment of the light-responsive dynamic hologram film of the present invention:

[0139] See also Fig.10 , is a structure of a light-responsive dynamic hologram film in this embodiment, and a schematic diagram of its light response.

[0140] The light-responsive dynamic hologram film HF in this embodiment is composed of a substrate layer 1, an information layer 2, and a protective layer 3. The three-layer structure is bonded to each other to form a film. The information layer records holographic stripes that can respond to external lighting. The information layer 2 is composed of a closely arranged holographic unit array 21, and the holographic unit array is composed of holographic units 6 216. The holographic unit 6 216 records a negative defocused Fourier transform hologram of a plane pattern 8 68 of a preset depth. The hologram is a reflective volume hologram.

[0141] The dynamic hologram film has the following light response characteristics. Fig.10 As shown, when the approximate point light source 5 is turned on, the human eye can see a plane pattern eight 68 at a preset depth under the illumination of the extended light source 4. The plane pattern eight 68 is suspended above the holographic film HF. Fig.10 When the approximate point light source 5 moves downward at a speed of V8 along the axis perpendicular to the hologram film, the plane pattern 868 moves upward at a speed of V11 along the axis perpendicular to the hologram film, and the plane pattern 868 is continuously enlarged until infinity. At this time, the approximate point light source 5 continues to move downward at a speed of V8 along the axis perpendicular to the hologram film, and the position of the plane pattern 868 is changed from the upper part of the hologram film to the lower part, and as the approximate point light source 5 continues to move downward, the plane pattern 868 will move upward at a speed of V12 along the axis perpendicular to the hologram film, and the pattern is continuously reduced.

[0142] The sixth specific embodiment of the light-responsive dynamic hologram film of the present invention:

[0143] See also Fig.11 , is a structure of a light-responsive dynamic hologram film in this embodiment, and a schematic diagram of its light response.

[0144] The light-responsive dynamic hologram film HF in this embodiment is composed of a substrate layer 1, an information layer 2, and a protective layer 3. The three-layer structure is bonded to each other to form a film. The information layer records holographic stripes that can respond to external lighting. The information layer 2 is composed of a closely arranged holographic unit array 21, and the holographic unit array is composed of holographic units 217. The holographic unit 217 records a negative defocused Fourier transform hologram of a multi-plane pattern of a preset depth. The multi-plane pattern is composed of a plane pattern 9 69 and a plane pattern 10 70. The hologram is a reflective volume hologram.

[0145] The dynamic hologram film has the following light response characteristics. Fig.11 As shown, when the approximate point light source 5 is turned on, the human eye can see the plane pattern nine 69 and the plane pattern ten 70 at the preset depth under the illumination of the extended light source 4. The plane pattern nine 69 is suspended below the holographic film HF, and the plane pattern ten 70 is suspended above the holographic film HF. Fig.11 When the approximate point light source 5 moves downward along the axis perpendicular to the hologram film at a speed V8, the plane pattern 9 69 moves upward along the axis perpendicular to the hologram film at a speed V14, and the plane pattern 9 69 is continuously enlarged. The plane pattern 10 70 moves upward along the axis perpendicular to the hologram film at a speed V13, and the plane pattern 10 70 is continuously enlarged.

[0146] The seventh specific embodiment of the light-responsive dynamic hologram film of the present invention:

[0147] See also Fig.12 and Fig.13 , is a structure of a light-responsive dynamic hologram film in this embodiment, and a schematic diagram of its light response.

[0148] The light-responsive dynamic hologram film HF in this embodiment is composed of a substrate layer 1, an information layer 2, and a protective layer 3. The three-layer structure is bonded to each other to form a film. The information layer records holographic stripes that can respond to external lighting. The information layer 2 is composed of a closely arranged holographic unit array 21, and the holographic unit array is composed of holographic unit eight 218 and holographic unit nine 219. The holographic unit eight 218 records a large depth of field Fresnel hologram of a three-dimensional model pattern eleven 71 with continuous depth. The holographic unit nine 219 records a fractional Fourier transform hologram of a three-dimensional model pattern twelve 72 with continuous depth. The hologram is a reflective volume hologram.

[0149] The dynamic hologram film has the following light response characteristics. Fig.12As shown, when the approximate point light source 5 is turned off, the dynamic hologram film HF is illuminated by the extended light source 4, and the human eye cannot see the three-dimensional model pattern eleven 71 and the three-dimensional model pattern twelve 72. Fig.13 As shown, when the approximate point light source 5 is turned on, the human eye can see the three-dimensional model pattern eleven 71 and the three-dimensional model pattern twelve 72 at a specific depth under the illumination of the extended light source 4. The approximate point light source 5 is preferably an LED flashlight configured in a smart phone.

[0150] The eighth specific embodiment of the light-responsive dynamic hologram film of the present invention:

[0151] See also Fig.14 and Fig.15 , is a structure of a light-responsive dynamic hologram film in this embodiment, and a schematic diagram of its light response.

[0152] The light-responsive dynamic hologram film HF in this embodiment is composed of a substrate layer 1, an information layer 2, and a protective layer 3. The three-layer structure is bonded to each other to form a film. The information layer records holographic stripes that can respond to external lighting. The information layer 2 is composed of a closely arranged holographic unit array 21, and the holographic unit array is composed of a holographic unit nine 219 and a holographic unit ten 220. The holographic unit nine 219 records a large depth of field Fresnel hologram of a three-dimensional model pattern twelve 72 with continuous depth. The holographic unit ten 220 records a near-field Fresnel hologram of a three-dimensional model pattern thirteen 73 with continuous depth.

[0153] The dynamic hologram film has the following light response characteristics. Fig.14 As shown, when the parallel light source 8 is turned off, the human eye cannot see the three-dimensional model pattern 12 72 but can see the three-dimensional model pattern 13 73 under the illumination of the extended light source 4. Fig.15 As shown, when the parallel light source 8 is turned on, the dynamic hologram film is illuminated by the extended light source 4, and the human eye can simultaneously see the three-dimensional model pattern twelve 72 and the three-dimensional model pattern thirteen 73 at a specific depth.

[0154] The ninth specific embodiment of the light-responsive dynamic hologram film of the present invention:

[0155] See also Fig.16 and Fig.17 , is a structure of a light-responsive dynamic hologram film in this embodiment, and a schematic diagram of its light response.

[0156] The light-responsive dynamic hologram film HF in this embodiment is composed of a substrate layer 1, an information layer 2, and a protective layer 3. The three-layer structure is bonded to each other to form a film. The information layer records holographic stripes that can respond to external lighting. The information layer 2 is composed of a closely arranged holographic unit array 21, and the holographic unit array is composed of a holographic unit 221 and a holographic unit 222. The holographic unit 221 records a far-field Fresnel hologram of a pattern fourteen 74 with a single depth. The holographic unit 222 records a far-field Fresnel hologram of a pattern fifteen 75 with a single depth. Among them, the far-field Fresnel hologram of the pattern fourteen 74 is a reflective volume hologram. The far-field Fresnel hologram of the pattern fifteen 75 is a transmission hologram.

[0157] The dynamic hologram film has the following light response characteristics. Fig.16 As shown, when the parallel light source 8 and the preset extended light source 9 are turned off, the dynamic hologram film HF is illuminated by the extended light source 4, and the human eye cannot see the pattern 14 74 and the pattern 15 75. Fig.17 As shown, when the parallel light source 8 and the preset extended light source 9 are turned on, the dynamic hologram film is illuminated by the extended light source 4, and human eyes can simultaneously see pattern fourteen 74 and pattern fifteen 75 at a specific depth.

[0158] The tenth specific embodiment of the light-responsive dynamic hologram film of the present invention:

[0159] A light-responsive dynamic hologram film comprises a substrate layer, an information layer, and a protective layer. The information layer is located between the substrate layer and the protective layer. The information layer records holographic stripes that can respond to external lighting. The holographic stripes are preferably composed of a closely arranged holographic unit array. Each holographic unit in the holographic unit array records a far-field hologram of a preset pattern or at least a part of the preset pattern. The far-field hologram is composed of holographic stripes formed by the interference of the far-field diffraction light field of the preset pattern or at least a part of the preset pattern with a set reference light.

[0160] The far-field hologram includes an accurate Fourier transform hologram of a preset pattern, a defocused Fourier transform hologram, a fractional Fourier transform hologram, a large depth of field Fresnel hologram, etc.

[0161] The preset patterns include single plane patterns with discrete depths, multi-plane patterns with discrete depths, and three-dimensional model patterns with continuous depths.

[0162] The light-responsive dynamic hologram film has the following response characteristics:

[0163] The hologram film can produce a dynamic holographic imaging effect in response to changes in an external illumination light source, and the light source is preferably an incoherent light source, including an incoherent point light source, a near-point light source, a parallel light source, a pre-set extended light source, and the like.

[0164] The response forms include:

[0165] (1) In a bright environment, the hologram displays a preset pattern visible to the human eye when the preferred illumination light source is turned on, and the preset pattern is invisible to the human eye when the preferred illumination light source is turned off.

[0166] (2) In a bright environment, when the preferred light source is turned on, the preset pattern can move with the movement of the preferred light source. The movement forms include: when the preferred light source translates parallel to the hologram surface, the preset pattern translates in the same direction as the preferred light source. When the preferred light source rotates clockwise around an axis perpendicular to the hologram on a plane parallel to the hologram, the preset pattern rotates clockwise around the axis perpendicular to the hologram. When the preferred light source rotates counterclockwise around an axis perpendicular to the hologram on a plane parallel to the hologram, the preset pattern rotates counterclockwise with the light source around the axis perpendicular to the hologram.

[0167] When the preferred light source translates along a surface parallel to the hologram, the preset pattern translates in the opposite direction relative to the preferred light source. When the preferred light source rotates clockwise around an axis perpendicular to the hologram on a plane parallel to the hologram, the preset pattern rotates counterclockwise around an axis perpendicular to the hologram. When the preferred light source rotates counterclockwise around an axis perpendicular to the hologram on a plane parallel to the hologram, the preset pattern rotates clockwise around an axis perpendicular to the hologram.

[0168] (3) When the preferred light source is turned on, the preset pattern can be scaled as the preferred light source moves. The scaling includes: when the preferred light source moves upward perpendicular to the hologram surface, the preset pattern is enlarged, and when the preferred light source moves downward perpendicular to the hologram surface, the preset pattern is reduced.

[0169] The zooming form also includes: when the preferred light source moves upward perpendicular to the hologram surface, the preset pattern is reduced, and when the preferred light source moves downward perpendicular to the hologram surface, the preset pattern is enlarged.

[0170] The zooming form also includes: when the preferred light source moves upward perpendicular to the hologram surface, the preset pattern is first reduced and then enlarged; when the preferred light source moves downward perpendicular to the hologram surface, the preset pattern is first enlarged and then reduced.

[0171] The zooming form also includes: when the preferred light source moves upward perpendicular to the hologram surface, the preset pattern is first enlarged and then reduced; when the preferred light source moves downward perpendicular to the hologram surface, the preset pattern is first reduced and then enlarged.

[0172] The hologram is preferably a reflective volume hologram or a transmissive plane hologram.

[0173] Embodiments of the hologram of the present invention:

[0174] See also Figure 18-Figure 22 , which are a reflective accurate Fourier transform hologram, a defocused Fourier transform hologram, a transmissive fractional Fourier transform hologram and a large depth of field Fresnel hologram in this embodiment.

[0175] like Fig.18 As shown, the accurate Fourier transform hologram is located on the rear focal plane of the Fourier transform lens, and the preset pattern is located on the front focal plane of the Fourier transform lens. The accurate Fourier transform hologram is formed by the interference of the light field on the rear focal plane and the reference light incident from the opposite side.

[0176] like Fig.19 As shown, the positive defocused Fourier transform hologram is located on the output surface beyond one focal length of the Fourier transform lens, and the preset pattern is located on the front focal plane of the Fourier transform lens. The positive defocused Fourier transform hologram is formed by the interference of the light field on the output surface and the reference light incident from the opposite side.

[0177] like Fig. 20 As shown, the negative defocused Fourier transform hologram is located on the output surface between the Fourier transform lens and the rear focal plane, and the preset pattern is located on the front focal plane of the Fourier transform lens. The positive defocused Fourier transform hologram is formed by the interference of the light field on the output surface and the reference light incident from the opposite side.

[0178] like Fig.21 As shown, the fractional Fourier transform hologram is located on the output surface between the Fourier transform lens and its rear focal plane, and the preset pattern is located on the input surface between the Fourier transform lens and its front focal plane. The fractional Fourier transform hologram is formed by the interference of the light field on the output surface and the reference light incident on the same side.

[0179] like Fig. 22 As shown, the large depth of field Fresnel hologram is located on the output surface, the preset pattern is located on the input surface, and the hologram is composed of a distance hologram. Figure 1 The light field on the input surface at a certain distance is formed by the interference of the light field formed by Fresnel diffraction and the reference light incident on the same side. The distance between the input surface and the output surface is greater than the depth of field of the hologram under ordinary diffuse light or extended light source illumination conditions.

[0180] like Fig.23 , Fig.24 , Fig.25 , Fig.26 , Fig. 27 , Fig.28 As shown, a specific embodiment of the dynamic hologram production method, dynamic hologram and light response of the present invention is applied:

[0181] In this embodiment, the preset pattern to be displayed is auspicious clouds through a pre-constructed image acquisition model, and the dynamic effect is: the auspicious cloud pattern is displayed when the preset light source is turned on, and is hidden when the preset light source is turned off; the pattern moves in the same direction as the preset light source.

[0182] like Fig.23 When the preset approximate point light source is turned on, the auspicious cloud pattern is displayed; Fig.24 When the preset approximate point light source is turned off, the auspicious cloud pattern is hidden; Fig.25 , Fig.26 , Fig. 27 The auspicious cloud pattern moves in the same direction as the preset light source moves.

[0183] To realize the above dynamic hologram, you need to continue to perform the following steps:

[0184] Using the pre-built hologram simulation model, a preset hologram is set based on the preset pattern 60 , dynamic effects and light source 50 .

[0185] A pre-constructed holographic stripe generation model is used to decompose a preset hologram into holographic units 211. The holographic stripes in the holographic units are determined based on the light field, dynamic effect, light source 50 and the optical coupling relationship of the preset pattern 60 in the preset hologram, and are used to dynamically respond to external illumination.

[0186] The positive defocused Fourier transformed light field of the preset pattern 60 is recorded in the holographic unit 211; the positive defocused Fourier transformed light field of the same preset pattern 60 is recorded in each holographic unit in the hologram; the wave vector of the light source at the holographic unit 211 is the same as the wave vector of the reference light at the unit position.

[0187] The optical coupling relationship includes: a dynamic moiré imaging relationship between the array formed by the light source 50, the holographic unit 211 and the array formed by the preset pattern 60; a holographic coupled wave imaging relationship between the incoherent light source and the holographic unit 211; and a far-field diffraction array imaging relationship between the holographic unit 211 and the preset pattern 60.

[0188] Holographic stripes are generated according to a pre-constructed holographic dynamic display effect generation model and / or a holographic stripe physical output device to obtain a hologram that can be dynamically displayed, thereby realizing the production of a dynamic hologram that can respond to light.

[0189] The holographic stripes are generated by a holographic printing output device; the holographic stripes in the specific holographic unit 211 are formed by interference exposure one by one by a positive defocused Fourier transform light field of a preset pattern 60 and a reference light with the same wave vector as the illumination light at the holographic unit 211.

[0190] Therefore, this embodiment can verify that the present invention can be applied to obtain a hologram that can be displayed dynamically and can achieve dynamic light response.

[0191] An embodiment of a device applying the method of the present invention:

[0192] An electronic device comprising:

[0193] one or more processors;

[0194] A storage device for storing one or more programs;

[0195] When the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned method for producing a dynamic hologram capable of light response.

[0196] A computer medium embodiment of the method of the present invention is applied:

[0197] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the above-mentioned method for producing a dynamic hologram capable of light response.

[0198] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, and computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0199] The present application is described by flowcharts or / and block diagrams of the methods, devices (systems), and computer program products of the embodiments of the present application. It should be understood that each process or / and block in the flowchart or / and block diagram and the combination of the processes or / and blocks in the flowchart or / and block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart or / and block diagram. Figure 1 Process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0200] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 Process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0201] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 Process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0202] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field can still modify or replace the specific implementation methods of the present invention with equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A method for producing a dynamic hologram capable of light response, characterized in that: Includes the following: Obtain the preset patterns and dynamic effects that need to be displayed through the pre-built image acquisition model; Use pre-built hologram simulation models to set up preset holograms based on preset patterns, dynamic effects, and lighting conditions; A pre-built holographic fringe generation model is used to decompose a preset hologram into holographic units. The holographic fringes in the holographic units are determined based on the light field, dynamic effect, illumination condition and optical coupling relationship of the preset pattern in the preset hologram, and are used to dynamically respond to external illumination. Holographic stripes are generated according to a pre-constructed holographic dynamic display effect generation model and / or a holographic stripe physical output device to obtain a hologram that can be dynamically displayed, thereby realizing the production of a dynamic hologram that can respond to light.

2. A method for producing a dynamic hologram capable of light response as claimed in claim 1, characterized in that: The preset pattern is a single plane pattern or / and multiple plane patterns with a certain depth or a multi-plane single pattern or / and multiple patterns with discrete depths or a three-dimensional model pattern with continuous depth, and its shape is a geometric pattern or / and a text pattern or / and a plant pattern or / and an animal pattern or / and a human pattern or / and a landscape pattern or / and an artifact pattern or / and a natural phenomenon pattern or / and a virtual digital pattern; The dynamic effects are: translation, rotation, scaling of a single pattern, or / and, relative translation, rotation, scaling of multiple patterns.

3. The method for producing a dynamic hologram capable of light response according to claim 1, characterized in that: Using the pre-built hologram simulation model, the method to set up a preset hologram based on preset patterns, dynamic effects, and lighting conditions is as follows: Acquiring characteristic information of an incoherent lighting source; the incoherent lighting source includes an incoherent point light source, a near point light source, a parallel light source or a pre-set extended light source; Generate lighting conditions based on characteristic information of the incoherent light source; Setting a preset hologram based on lighting conditions, dynamic effects and preset patterns, and according to a hologram transformation algorithm; The hologram transformation algorithm is an accurate Fourier transform hologram algorithm, a defocused Fourier transform hologram algorithm, a fractional Fourier transform hologram algorithm or a large depth of field Fresnel hologram algorithm.

4. The method for producing a dynamic hologram capable of light response according to claim 1, characterized in that: Using the pre-built holographic fringe generation model, the method of obtaining holographic fringe according to the preset hologram is as follows: According to the preset hologram, a number of holographic units are set; Arrange several holographic units closely to obtain a holographic unit array; The holographic stripes in the holographic unit are determined according to the light field of the preset pattern in the preset hologram, the dynamic effect, the illumination condition and the optical coupling relationship among the three, and are used to dynamically respond to the external illumination; The optical coupling relationship includes: a dynamic moiré imaging relationship between an incoherent light source, a holographic unit and a preset pattern; a holographic coupled wave imaging relationship between an incoherent light source and a holographic unit; and a far-field diffraction array imaging relationship between a holographic unit and a preset pattern.

5. The method for producing a dynamic hologram capable of light response according to claim 1, characterized in that: The method for generating holographic stripes according to the pre-built holographic dynamic display effect generation model and the holographic stripe physical output device to obtain a hologram that can be dynamically displayed is as follows: According to the holographic fringes, a far-field diffraction light field based on a preset pattern and its dynamic effect interferes with a reference light field corresponding to a set lighting condition to form a hologram; the hologram is decomposed into holographic units, and all holographic units are physically outputted using the holographic fringes to obtain a dynamic hologram film object with light response; The hologram is an accurate Fourier transform hologram including a preset pattern, a defocused Fourier transform hologram, a fractional Fourier transform hologram, or a large depth of field Fresnel hologram.

6. A method for producing a dynamic hologram capable of light response as claimed in claim 5, characterized in that: The method to obtain an accurate Fourier transform hologram is as follows: The preset pattern is located on the front focal plane of the Fourier transform lens, and the accurate Fourier transform hologram is formed by the interference of the light field on the back focal plane and the reference light incident on the opposite side or the same side, which is located on the back focal plane of the Fourier transform lens; Or / and, the method of obtaining a positive defocused Fourier transform hologram is as follows: The preset pattern is located on the front focal plane of the Fourier transform lens, and the positive defocused Fourier transform hologram is formed by the interference of the light field on the output surface and the reference light incident on the opposite side or the same side, and the hologram is located on the output surface beyond one focal length of the Fourier transform lens; Or / and, the method of obtaining a negative defocus Fourier transform hologram is as follows: The preset pattern is located on the front focal plane of the Fourier transform lens, and the positive defocused Fourier transform hologram is formed by the interference of the light field on the output surface and the reference light incident on the opposite side or the same side, and the hologram is located on the output surface between the Fourier transform lens and the rear focal plane thereof; Or / and, the method to obtain the fractional Fourier transform hologram is as follows: The preset pattern is located on the input surface between the Fourier transform lens and its front focal plane, and the fractional Fourier transform hologram is formed by the interference of the light field on the output surface and the reference light incident on the opposite side or the same side, and the hologram is located on the output surface between the Fourier transform lens and its rear focal plane; Or / and, the method of obtaining a Fresnel hologram with a large depth of field is as follows: The preset pattern is located on the input surface, and the large depth of field Fresnel hologram is formed by the interference of the light field formed by Fresnel diffraction on the input surface at a certain distance from the hologram and the reference light incident on the opposite side or the same side, and the hologram is located on the output surface; The distance between the input surface and the output surface is greater than the depth of field of the large-depth-of-field Fresnel hologram under ordinary diffuse light or extended light source illumination conditions.

7. A light-responsive dynamic hologram film, characterized in that: It includes a substrate layer, an information layer, and a protective layer; The information layer is located between the substrate layer and the protective layer; the information layer is provided with holographic stripes that can respond to external illumination; the holographic stripes include a closely arranged holographic unit array; Each holographic unit in the holographic unit array is provided with a far-field hologram capable of forming a preset pattern or at least a part of the preset pattern; The far-field hologram is composed of holographic fringes formed by the interference of the far-field diffraction light field of the preset pattern or at least part of the preset pattern with a set reference light field, and is used to respond to changes in external illumination light sources and produce a dynamic holographic imaging effect.

8. The light-responsive dynamic hologram film according to claim 7, characterized in that: The far-field hologram includes an accurate Fourier transform hologram of a preset pattern or / and a defocused Fourier transform hologram or / and a fractional Fourier transform hologram or / and a Fresnel hologram with a large depth of field; The preset pattern includes a single plane single pattern with a certain depth or / and multiple patterns or / and a multi-plane single pattern with discrete depth or / and multiple patterns or / and a three-dimensional model pattern with continuous depth; The light source is an incoherent light source, including an incoherent point light source and / or a near point light source and / or a parallel light source and / or a preset extended light source.

9. A light response method based on a dynamic hologram film, characterized in that: The light-responsive dynamic hologram film according to any one of claims 7 to 8 is used, comprising the following contents: In a bright environment, when the set light source is turned on, the hologram displays a preset pattern visible to the human eye, and when the set light source is turned off, the preset pattern is invisible to the human eye; In a bright environment, when a set light source is turned on, the preset pattern can move with the movement of the set light source; Under the condition that the set light source is turned on, the preset pattern can be scaled along with the movement of the set light source.

10. The light response method based on dynamic hologram film according to claim 9, characterized in that: The mobile form includes the following: When the light source is set to translate parallel to the hologram surface, the preset pattern translates in the same direction as the light source; when the light source is set to rotate clockwise around an axis perpendicular to the hologram on a plane parallel to the hologram, the preset pattern rotates clockwise around the axis perpendicular to the hologram; when the light source is set to rotate counterclockwise around an axis perpendicular to the hologram on a plane parallel to the hologram, the preset pattern rotates counterclockwise around the axis perpendicular to the hologram along with the light source; Or, when the preset light source is translated along a surface parallel to the hologram, the preset pattern is translated in the opposite direction relative to the preset light source; When the light source is set to rotate clockwise around an axis perpendicular to the hologram on a plane parallel to the hologram, the preset pattern rotates counterclockwise around the axis perpendicular to the hologram; when the light source is set to rotate counterclockwise around an axis perpendicular to the hologram on a plane parallel to the hologram, the preset pattern rotates clockwise around the axis perpendicular to the hologram; Or / and, the scaling form includes the following: When the light source is set to move upward perpendicular to the hologram surface, the preset pattern is enlarged, and when the light source is set to move downward perpendicular to the hologram surface, the preset pattern is reduced; or, when the light source is set to move upward perpendicular to the hologram surface, the preset pattern is reduced, and when the light source is set to move downward perpendicular to the hologram surface, the preset pattern is enlarged; or, when the light source is set to move upward perpendicular to the hologram surface, the preset pattern is first reduced and then enlarged, and when the light source is set to move downward perpendicular to the hologram surface, the preset pattern is first enlarged and then reduced; or, when the light source is set to move upward perpendicular to the hologram surface, the preset pattern is first enlarged and then reduced, and when the light source is set to move downward perpendicular to the hologram surface, the preset pattern is first reduced and then enlarged; Or / and, the hologram is a reflective volume hologram or a transmissive plane hologram.

Images