CN101446798A - Method and device for fabricating transient 3D image - Google Patents

Method and device for fabricating transient 3D image Download PDF

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Publication number
CN101446798A
CN101446798A CNA2007101780617A CN200710178061A CN101446798A CN 101446798 A CN101446798 A CN 101446798A CN A2007101780617 A CNA2007101780617 A CN A2007101780617A CN 200710178061 A CN200710178061 A CN 200710178061A CN 101446798 A CN101446798 A CN 101446798A
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China
Prior art keywords
transient
laser
image
moving object
pulse
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CNA2007101780617A
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Chinese (zh)
Inventor
胡镔
胡国华
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Beijing Zhonghang New Image Technology Co Ltd
BEIJING MEILIAN HUAXIN MEASUREMENT CONTROL TECHNOLOGY CO LTD
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Beijing Zhonghang New Image Technology Co Ltd
BEIJING MEILIAN HUAXIN MEASUREMENT CONTROL TECHNOLOGY CO LTD
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Priority to CNA2007101780617A priority Critical patent/CN101446798A/en
Publication of CN101446798A publication Critical patent/CN101446798A/en
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Abstract

The invention relates to a dynamic 3D holographic image technology, in particular to a fabrication method of a transient 3D image which records and reproduces a moving object and a device thereof. The method comprises the following steps: step 1: recording image information of a moving object in time sequence on a holographic photosensitive film with a primary recording pulse laser beam to sequentially form a plurality of laser interference fringes; step 2 secondarily copying a plurality of image information of the moving object primarily recorded in the time sequence on another holographic photosensitive film with a secondary recording reproduction laser beam to form a secondary recording 3D image of the moving object; and step 3: irradiating the secondary recording 3D image of the moving object with white light and observing the moving object at a viewing angle which changes at a certain speed. In the method, the same photosensitive film for recording transient holographic image information (a plurality of interference fringes) of the moving object in the time sequence is used for replacing a plurality of films for capturing the moving object from different angles in the time sequence, thus greatly simplifying the primary recording process.

Description

The method for making of transient 3 D image and device
Technical field
The present invention relates to a kind of dynamic 3 D hologram image technology, particularly a kind of record and the method for making and the device that reappear the transient 3 D image that changes object.
Background technology
Existing hologram filming apparatus as shown in Figure 1, be by laser instrument L, mirror M 1, M2, M3, optical splitter SP, collimation lens set L01, L02 and L03, L04 and photographic plate P form, laser instrument laser that L sends out is divided into object beam B1 and reference beam B2 via optical splitter SP, object beam is by collimation lens set L01, L02 forms the collimation directional light that expands bundle and shines on the photographic plate P via the subject image mask that once writes down, reference beam B2 is by collimation lens set L03, L04 also projects photographic plate P upward with recorded hologram after expanding bundle, once Ji Lu subject image mask is to adopt transparent film T, when taking dynamic hologram, need tens different angles and seasonal effect in time series subject image, need to make a series of transparent films, operation is trouble very.
A kind of synthetic dynamic hologram filming apparatus is disclosed in the utility model patent of patent No. 01257623.9V, comprise laser instrument, catoptron, beam splitter, collimation lens set, subject image entering apparatus and photographic plate, wherein: described subject image entering apparatus comprises the digital micro-mirror device DMD of the image digital signal control that is subjected to computing machine, imaging len L and diffuser screen S, the described beam-expanding collimation directional light transmission that object beam B1 is formed is on digital micro-mirror device DMD, the light that reflects from digital micro-mirror device is imaged on the diffuser screen S through imaging len L, projects on the photographic plate P again.When taking dynamic hologram, the discrete seasonal effect in time series subject image of computing machine output is input to digital micro-mirror device in proper order.Need not to make a series of transparent films in advance, greatly improved the shooting speed of dynamic hologram, and digital micro-mirror device has the characteristic of high resolving power and high-contrast, thereby can produce high-quality compound body apparent motion attitude hologram.
The acquisition process of the image digital signal of computing machine neither a simple thing in this patent, need be carried out image recording to the moving object of required shooting from different perspectives and is handled chronologically by multiple cameras.
Can directly write down moving object and obtain the dynamic 3 D image with simple hologram filming apparatus be one of medium-term and long-term unsolved difficult problem in holographic technique field.
Summary of the invention
Technical matters to be solved by this invention is, at the above-mentioned deficiency of prior art, directly moving object is write down and obtain the method for making and the device of the transient 3 D image of dynamic 3 D image with simple hologram image pickup method and device and provide a kind of.
The method for making of transient 3 D image provided by the present invention and device are realized by following technical scheme.
A kind of method for making of transient 3 D image is characterized in that comprising the following steps:
Step 1, once the record on the holographic light-sensitive film, write down the image information of moving object chronologically with pulse laser beam, form the multi-stripe laser interference fringe in regular turn;
Step 2, secondary write down the image information secondary copy back of many moving objects of record chronologically will once writing down with the reproduction laser beam on another holographic light-sensitive film, make secondary record moving object 3-D view;
Step 3, the moving object 3-D view of using the white light secondary to write down, and press certain speed change viewing angle, can see the three-dimensional body of motion.
The method for making of described transient 3 D image is characterized in that: the described once pulse laser beam of record comprises pulse object beam and pulse reference beam, and described pulse object beam and pulse reference beam are synchronous; Described synchronizing pulse object beam and pulse reference beam are to be obtained via spectroscope by the pulse laser that same pulse laser generator produces.
The method for making of described transient 3 D image, it is characterized in that: described on the holographic light-sensitive film chronologically the multi-stripe laser interference fringe of record be to obtain by the shield of being located at the motion before the holographic light-sensitive film with a narrow slit, described shield is along moving perpendicular to the direction of narrow slit and with the speed that the adjacent dual-laser pulsion phase interval is moved a fringe-width.
The method for making of described transient 3 D image is characterized in that: the reproduction laser beam of described secondary record is a continuous laser beam, comprises and reappears object beam and reference beam.
The method for making of described transient 3 D image is characterized in that: the pulsed frequency of described pulse laser beam specifically is more than or equal to 10 times/second more than or equal to the required frequency of persistence of vision.
The present invention also provides a kind of producing device that is used for the transient 3 D image of said method, comprise: by laser instrument, pen recorder that catoptron, spectroscope, expansion optical lens and holographic photography sensitive film are constituted and secondary pen recorder, it is characterized in that: in a described pen recorder, described laser instrument is a pulsed laser; The front of described sensitive film is provided with the shield with a narrow slit, and described shield moves along the speed that the direction perpendicular to narrow slit moves a fringe-width with the adjacent dual-laser pulsion phase interval.
The producing device of described transient 3 D image is characterized in that: described shield connects a tooth bar, described tooth bar and the gearing mesh that is fixedly arranged in the stepper motor rotating shaft.
The producing device of described transient 3 D image is characterized in that: the expansion optical lens in the described pen recorder is that the sphere circular cone light that single convex lens constituted expands light microscopic.
The producing device of described transient 3 D image is characterized in that: the laser instrument in the described secondary pen recorder is a continuous wave laser.
The producing device of described transient 3 D image is characterized in that: the expansion light microscopic in the described secondary pen recorder is for converging the optical lens group.
The invention has the advantages that: the present invention is used in the method that writes down moving object moment hologram image information-many interference fringes on same the sensitive film chronologically and replaces many films of taking moving object from different perspectives chronologically, thereby the process of record is simplified greatly.
For architectural feature of the present invention and effect thereof are had further understanding, enumerate specific embodiment now and be described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 is existing dynamic hologram filming apparatus synoptic diagram.
Fig. 2 is the method for making process flow diagram of transient 3 D image of the present invention.
Fig. 3 is a transient 3 D image filming apparatus synoptic diagram of the present invention.
Fig. 4 is the narrow slit shield drive unit synoptic diagram in the transient 3 D image filming apparatus of the present invention.
Fig. 5 is a secondary pen recorder synoptic diagram of the present invention.
Fig. 6 is that white light reappears synoptic diagram.
Embodiment
Fig. 2 is the process flow diagram of the method for making of transient 3 D image of the present invention.Comprise the following steps:
Step 1, once the record on the holographic light-sensitive film, write down the image information of moving object chronologically with pulse laser beam, form the multi-stripe laser interference fringe in regular turn; The described once pulse laser beam of record comprises pulse object beam and pulse reference beam, and described pulse object beam and pulse reference beam are synchronous; Described synchronizing pulse object beam and pulse reference beam are to be obtained via spectroscope by the pulse laser that same pulse laser generator produces.
Described on the holographic light-sensitive film chronologically the multi-stripe laser interference fringe of record be to obtain by the shield of being located at the motion before the holographic light-sensitive film with a narrow slit, described shield is along moving perpendicular to the direction of narrow slit and with the speed that the adjacent dual-laser pulsion phase interval is moved a fringe-width.
The pulsed frequency of described pulse laser beam specifically is more than or equal to 10 times/second more than or equal to the required frequency of persistence of vision.
Step 2, secondary write down the image information secondary copy back of many moving objects of record chronologically will once writing down with the reproduction laser beam on another holographic light-sensitive film (as shown in Figure 5), make secondary record moving object 3-D view; The reproduction laser beam (being object beam) and the reference beam of secondary record are continuous laser beam.
Step 3, the moving object 3-D view (as shown in Figure 6) of using the white light secondary to write down, and press certain speed change viewing angle, can see the three-dimensional body of motion.Described change viewing angle can realize that different swing speed will be seen the three-dimensional body of different motion speed by the holographic light-sensitive film of swing secondary record moving object 3-D view.
Method of the present invention can be used for the insect of record-setting flight, is fallen down the porcelain cup of breaking into pieces, the shell of blast etc.
Fig. 3 is the producing device synoptic diagram that is used for the transient 3 D image of said method provided by the present invention.It comprises: the pen recorder that expands that optical lens 4, reference light expand that optical lens 5 and holographic photography sensitive film 11 constituted by laser instrument 1, catoptron 2, spectroscope 3, object beam and the secondary pen recorder of roughly the same configuration; Laser instrument 1 in a described pen recorder is 1.06 microns～0.53 micron pulsed infrared laser device for wavelength; The front of described sensitive film 5 is provided with the shield 7 with a narrow slit 6, and described shield 7 is slidedly arranged in the fixing chute 10, described chute 10 makes shield 7 move along the direction perpendicular to narrow slit 6, and its translational speed is the adjacent dual-laser pulsion phase interval to move a fringe-width.Concrete structure is: described shield 7 connects a tooth bar 8, described tooth bar 8 and gear 12 engagements (as shown in Figure 4) that are fixedly arranged in stepper motor 9 rotating shafts.The translational speed of the controllable rotation speed system shield 7 by control step motor 9.
Object beam in the described pen recorder expands optical lens 4 and reference light expansion optical lens 5 is the sphere circular cone light expansion light microscopic that single convex lens constitute, and described object beam expansion optical lens 4 and reference light expansion optical lens 5 will be converged by focus by the collimated laser beam planoconvex lens that spectroscope 3 is told respectively and diffuse into sphere circular cone light beam.
When described laser instrument 1 sends the first road laser pulse, the primary importance of the narrow slit 6 corresponding holographic photography sensitive films 11 on the described shield 7, at this moment, described sphere circular cone object beam illuminates moving object, and partial reflection light in the moving object and reference light form the moving object of a record in article one interference fringe of the status image of the very first time via the narrow slit on the shield 6 on the primary importance of holographic photography sensitive film 11; In the interval time of laser pulse, narrow slit 6 moves to the second place of corresponding holographic photography sensitive film 11 with shield 7, moving object is in the second time location state, this moment, described laser instrument 1 sent the second road laser pulse, was in partial reflection light in the moving object of second place state and formed one with reference light via the narrow slit on the shield 6 on the second place of holographic photography sensitive film 11 and write down moving object in second interference fringe of the status image of second time location; So constantly on holographic photography sensitive film 11, note many interference fringes of object of which movement overall process.The quantity of described interference fringe is relevant with the time T of the moving object of being write down,
Quantity Q=fT
F is the pulsed frequency of laser.
Described secondary pen recorder and existing dynamic hologram filming apparatus are basic identical, and laser instrument wherein is a continuous wave laser.Expand light microscopic for converging the optical lens group, promptly formed by expanding optical lens and collector lens, the focal length of collector lens and diameter are greater than the focal length and the diameter that expand optical lens, two lens are coaxial at a distance of the focal length sum greater than two lens, converge and after focus, be diffused into collector lens by expanding optical lens from the collimated laser beam of the minor diameter of laser instrument, by collector lens laser beam is become the large diameter laser beam (with the laser beam conjugation of record once) that converges again.Wherein large diameterly converge the holographic photography film 11 that object beam sees through many interference fringes recording the object of which movement overall process and shine simultaneously on another holographic light-sensitive film 13 with the large diameter reference beam that converges, with the laser image information copy back of all moving objects to holographic light-sensitive film 13.
With white light holographic light-sensitive film 13, the observer faces and swing holographic light-sensitive film 12, can see moving three-dimensional body with two.
Described holographic light-sensitive film is a high resolving power holographic light-sensitive film, and its resolution is more than or equal to 3000/mm.

Claims (10)

1, a kind of method for making of transient 3 D image is characterized in that comprising the following steps:
Step 1, once the record on the holographic light-sensitive film, write down the image information of moving object chronologically with pulse laser beam, form the multi-stripe laser interference fringe in regular turn;
Step 2, secondary write down the image information secondary copy back of many moving objects of record chronologically will once writing down with the reproduction laser beam on another holographic light-sensitive film, make secondary record moving object 3-D view;
Step 3, the moving object 3-D view of using the white light secondary to write down, and press certain speed change viewing angle, can see the three-dimensional body of motion.
2, the method for making of transient 3 D image according to claim 1 is characterized in that: the described once pulse laser beam of record comprises pulse object beam and pulse reference beam, and described pulse object beam and pulse reference beam are synchronous; Described synchronizing pulse object beam and pulse reference beam are to be obtained via spectroscope by the pulse laser that same pulse laser generator produces.
3, the method for making of transient 3 D image according to claim 1, it is characterized in that: described on the holographic light-sensitive film chronologically the multi-stripe laser interference fringe of record be to obtain by the shield of being located at the motion before the holographic light-sensitive film with a narrow slit, described shield is along moving perpendicular to the direction of narrow slit and with the speed that the adjacent dual-laser pulsion phase interval is moved a fringe-width.
4, the method for making of transient 3 D image according to claim 1 is characterized in that: the reproduction laser beam of described secondary record is a continuous laser beam, comprises and reappears object beam and reference beam.
5, the method for making of transient 3 D image according to claim 1 is characterized in that: the pulsed frequency of described pulse laser beam specifically is more than or equal to 10 times/second more than or equal to the required frequency of persistence of vision.
6, a kind of producing device that is used for the transient 3 D image of the described method of claim 1, comprise: by laser instrument, pen recorder that catoptron, spectroscope, expansion optical lens and holographic photography sensitive film are constituted and secondary pen recorder, it is characterized in that: in a described pen recorder, described laser instrument is a pulsed laser; The front of described sensitive film is provided with the shield with a narrow slit, and described shield moves along the speed that the direction perpendicular to narrow slit moves a fringe-width with the adjacent dual-laser pulsion phase interval.
7, the producing device of transient 3 D image according to claim 6 is characterized in that: described shield connects a tooth bar, described tooth bar and the gearing mesh that is fixedly arranged in the stepper motor rotating shaft.
8, the producing device of transient 3 D image according to claim 6 is characterized in that: the expansion optical lens in the described pen recorder is that the sphere circular cone light that single convex lens constituted expands light microscopic.
9, the producing device of transient 3 D image according to claim 6 is characterized in that: the laser instrument in the described secondary pen recorder is a continuous wave laser.
10, the producing device of transient 3 D image according to claim 6 is characterized in that: the expansion light microscopic in the described secondary pen recorder is for converging the optical lens group.
CNA2007101780617A 2007-11-26 2007-11-26 Method and device for fabricating transient 3D image Pending CN101446798A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102279557A (en) * 2011-07-26 2011-12-14 华中科技大学 Method for preparing colour three-dimensional hologram based on holographic polymer dispersed liquid crystal grating
CN104897050A (en) * 2015-06-29 2015-09-09 京东方科技集团股份有限公司 Recording device, reproducing device, recording method, reproducing method, display system and display method for resultant hologram
CN105487244A (en) * 2016-01-21 2016-04-13 四川大学 Integrated imaging multi-view 3D display based on holographic optical elements
CN106969707A (en) * 2017-04-07 2017-07-21 京东方科技集团股份有限公司 A kind of detection means and its control method
CN108560380A (en) * 2018-03-29 2018-09-21 江苏建筑职业技术学院 A kind of remote sensing survey device
CN108983545A (en) * 2018-07-16 2018-12-11 浙江建林电子电气股份有限公司 A kind of three-dimensional imaging holoscope
CN110471249A (en) * 2019-09-17 2019-11-19 荆门市探梦科技有限公司 Live holographic display system
CN113719294A (en) * 2021-09-10 2021-11-30 西南交通大学 Tunnel model test tunnel excavation device and construction method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102279557A (en) * 2011-07-26 2011-12-14 华中科技大学 Method for preparing colour three-dimensional hologram based on holographic polymer dispersed liquid crystal grating
CN102279557B (en) * 2011-07-26 2013-10-30 华中科技大学 Method for preparing colour three-dimensional hologram based on holographic polymer dispersed liquid crystal grating
CN104897050A (en) * 2015-06-29 2015-09-09 京东方科技集团股份有限公司 Recording device, reproducing device, recording method, reproducing method, display system and display method for resultant hologram
CN105487244A (en) * 2016-01-21 2016-04-13 四川大学 Integrated imaging multi-view 3D display based on holographic optical elements
CN106969707A (en) * 2017-04-07 2017-07-21 京东方科技集团股份有限公司 A kind of detection means and its control method
US10511780B2 (en) 2017-04-07 2019-12-17 Boe Technology Group Co., Ltd. Detecting device, and method for controlling the same
CN108560380A (en) * 2018-03-29 2018-09-21 江苏建筑职业技术学院 A kind of remote sensing survey device
CN108560380B (en) * 2018-03-29 2023-08-11 江苏建筑职业技术学院 Remote sensing measuring device
CN108983545A (en) * 2018-07-16 2018-12-11 浙江建林电子电气股份有限公司 A kind of three-dimensional imaging holoscope
CN110471249A (en) * 2019-09-17 2019-11-19 荆门市探梦科技有限公司 Live holographic display system
CN110471249B (en) * 2019-09-17 2024-03-05 荆门市探梦科技有限公司 In-situ holographic display system
CN113719294A (en) * 2021-09-10 2021-11-30 西南交通大学 Tunnel model test tunnel excavation device and construction method

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