CN102053299A - Method for manufacturing holographic element for recording and redisplaying wavelength difference - Google Patents
Method for manufacturing holographic element for recording and redisplaying wavelength difference Download PDFInfo
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- CN102053299A CN102053299A CN 201010583230 CN201010583230A CN102053299A CN 102053299 A CN102053299 A CN 102053299A CN 201010583230 CN201010583230 CN 201010583230 CN 201010583230 A CN201010583230 A CN 201010583230A CN 102053299 A CN102053299 A CN 102053299A
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- holographic element
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Abstract
The invention provides a method for manufacturing a holographic element for recording and redisplaying wavelength difference, which comprises the following steps of: 1) determining the related parameter of an expected holographic element; 2) converting the related parameter obtained in the step 1) into the parameter of a recording light path; 3) constructing the recording light path according to the parameter of the recording light path; 4) performing exposure recording on the constructed recording light path and processing an exposed holographic recording medium; and 5) finishing the manufacturing of the holographic element. The method for manufacturing the holographic element for recording and redisplaying the wavelength difference is simple in process, low in cost and small in errors.
Description
Technical field
The present invention relates to a kind of method for making of holographic element, relate in particular to the method for making of a kind of record and playback wavelength difference holographic element.
Background technology
The research of holography from nineteen sixty in the world the appearance of first laser instrument just enter a new stage, expanded to fields such as holographic interferometry, holographic memory, holographic optical elements (HOE), holographic microscopy, display holography, digital holograms now.In recent years along with the high speed development of laser technology and holography, holographic optical elements (HOE) also has important use at aspects such as optical information processing, optical computing, optical-fibre communications, holographic memory, laser scanning, aberration corrections, takes aim at tool, laser protective eyewear, holography scanner, holographic movie, holographic false proof trade mark etc. as head-up display, holography.And can be used as the coherent source of making holographic element still is bigger solid and the gas laser of some bodily forms mostly, aforesaid holographic product generally can only select the little lightweight semiconductor laser of volume as reproducing light source, will cause the different of the record of holographic element and playback light source wavelength like this.Influence how to eliminate the correlation parameter variation that brings because of wavelength variations just becomes the critical problem that each holographic element deviser must consider.This also is to fetter the factor of the extensive popularization and application of holographic element in the optical articles for a long time.
The holographic element that utilizes conventional method to make at present, substantially all can produce very big astigmatism in use with the different of playback wavelength because of record, such as volume holographic grating, because the wavelength selectivity of volume hologram, utilize the grating of 532nm light source record, when using under the 650nm light source, angle of diffraction will change a lot.Utilize the hologram image of conventional method record not only to have the difference of reproducing on the angle, the size of reproduced image also can change along with the difference of playback light wavelength thereupon.Want to eliminate this species diversity and astigmatism, the most direct method is exactly to make the recording light source of holographic element identical with the wavelength that reproduces light source, and can be used in the light source requirements of making holographic element at present must be single-mode laser, and this light source not only costs an arm and a leg, and general volume is all bigger.
Summary of the invention
In order to solve the above-mentioned technical matters that exists in the background technology, the invention provides a kind of technology is simple, cost is low, error the is little record and the method for making of playback wavelength difference holographic element.
Technical solution of the present invention is: the invention provides the method for making of a kind of record and playback wavelength difference holographic element, its special character is: the method for making of described record and playback wavelength difference holographic element may further comprise the steps:
1) correlation parameter of definite expection holographic element;
2) the resulting correlation parameter of step 1) is changed into the parameter of recording beam path;
3) build recording beam path according to the parameter of recording beam path;
4) to expose record and handle the holographic recording medium exposed of the recording beam path of having built;
5) finish the making of holographic element.
Above-mentioned steps 1) correlation parameter of expection holographic element comprises parameter, the playback light source wavelength that will use of expection of the holographic element that expection will be accomplished and the wavelength of the recording light source that will use in.
Above-mentioned steps 2) specific implementation that in correlation parameter is changed into the parameter of recording beam path is: the parameter of calculating recording beam path according to the wavemeter of the holographic element parameter of expecting, reproduction light source and recording light source.
Above-mentioned steps 4) specific implementation of handling the holographic recording medium that exposed in is: according to selected glued membrane type the holographic negative that exposed is carried out photographic fixing, development, drying and sealing.Advantage of the present invention is:
The parameter that needs were implemented when the final argument that the method for making of record provided by the present invention and playback wavelength difference holographic element is based on the holographic element that expection will obtain at first calculated the recording holographic element according to certain conversion method, and take corresponding embodiment to make finally to get a desired effect, the present invention utilizes this thinking to carry out theoretical analysis and experimental verification just, finally implement and finished the making of the suitable record holographic element different with the playback light source wavelength, formulate production program and technological process that a cover adapts, solved the problem of existence during the recording light source holographic element different with the playback light source wavelength made for a long time.The present invention is when concrete the use, at first determine to make the playback wavelength and the parameter request of holographic element, wavelength and conversion method according to the recording light source that will adopt calculate the various parameters that need implement when writing down, by once writing down the making that just can finish the holographic element of pre-period parameters.The present invention relates to a kind of method for making of holographic element, optical source wavelength when used optical source wavelength is used with reproduction during this holographic element record can be different, the present invention analyzes and researches and experimental verification on the basis of microscopic holography and volume hologram art theory, formulated complete production program and the technological process of a cover, this manufacturing process technology is simple, cost is low, can utilize a kind of light source of wavelength once to finish the making of the holographic element under the multiple different wave length application conditions, especially suitable record from the axle holographic element can once write down the manufacturing of finishing holographic element.
Embodiment
The invention provides the method for making of a kind of record and playback wavelength difference holographic element, this method comprises:
1) determines the parameter of the holographic element that expection will be accomplished;
2) determine the playback light source wavelength that expection will be used: according to the holographic element parameter of expection and these known numeric value of wavelength of reproduction light source and recording light source, the formula that utilizes among the present invention to be mentioned calculates the parameter of recording beam path, and computing formula wherein refers to following formula:
sinθ
4±sinθ
3＝μ(sinθ
2±sinθ
1) (1)
μ＝λ
C/λ
O (5)
θ in above-mentioned (1) formula
1, θ
2, θ
3, θ
4Represent the angle between the normal that writes down reference light, record thing light, reproduction reference light, reproduction thing light and holographic element respectively.θ wherein
1, θ
2, θ
3, θ
4Respectively when holographic element plane normal homonymy (or heteropleural), in the corresponding just (or negative) number.This formula is derived by grating equation d (sin α ± sin β)=m λ (m is an integer) and is obtained, and represents the image position relation of holographic element among the present invention.
θ ' in above-mentioned (2) formula
1, θ '
2, θ '
3, θ '
4Respectively representative record reference light, record thing light, reproduce reference light, reproduce object point in photosensitive layer and the angle between the normal of holographic element, wherein, θ '
1, θ '
2, θ '
3, θ '
4Respectively when holographic element plane normal homonymy (or heteropleural), in the corresponding just (or negative) number.This formula is derived by Bragg's law and is obtained, thing light, the axis of symmetry of reference light two-beam in photoresists should equate with blaze angle alpha with the grating surface angulation when making holographic element, could form the blazed grating of asymmetric grooved like this, the holographic element of made just has the image and the diffraction light of high-diffraction efficiency.
N ', n, θ ' in above-mentioned (3) formula
n, θ
n(the corresponding respectively value of n is 1,2,3,4) represents the aerial angle of mentioning in angle in dry-film resist of each light beam of mentioning in the refractive index, (2) formula of refractive index, the air of dry-film resist, (1) formula of each light beam respectively.
μ=λ in above-mentioned (1), (2), (4), (5) formula
C/ λ
OWhat represent is the ratio of playback wavelength and recording wavelength.
3) wavelength of definite recording light source that will use;
4) according to the holographic element parameter of expection with reproduce light source and these known numeric value of wavelength of recording light source, the formula that utilizes among the present invention to be mentioned calculates the parameter of recording beam path: according to the normal handling program the holographic negative that exposed is carried out photographic fixing, development, drying, sealing according to selected glued membrane type and both can.Used photosensitive material difference, processing mode is also discrepant.
5) build recording beam path according to the recording parameters of calculating;
6) exposure record;
7) holographic recording medium that exposed of aftertreatment;
8) finish the making of holographic element, reproducing check holographic element parameter under the light source.
For example general photosensitive material is relatively more responsive to green glow and ruddiness, and the light source that can be used for holographic recording is generally powerful argon laser, to reproduce the ruddiness of the green glow recording holographic element application of 514nm in the light source holographic product to 650nm, if reproducing the angle requirement on light source and holographic element plane in the holographic product is 60 degree, because the wavelength difference of recording light source and reproduction light source is bigger, if utilize the light source of 514nm under the reference light of 60 degree, to carry out record, just can not reproduce the hologram image under the 60 degree angles under the 650nm, and the method for using this patent to provide is at first carried out angle and other CALCULATION OF PARAMETERS, carry out the record of holographic element according to the determined recording parameters of calculation Design, just can make the desired holographic element that obtains with settling at one go.
Claims (4)
1. the method for making of record and playback wavelength difference holographic element, it is characterized in that: the method for making of described record and playback wavelength difference holographic element may further comprise the steps:
1) correlation parameter of definite expection holographic element;
2) the resulting correlation parameter of step 1) is changed into the parameter of recording beam path;
3) build recording beam path according to the parameter of recording beam path;
4) to expose record and handle the holographic recording medium exposed of the recording beam path of having built;
5) finish the making of holographic element.
2. the method for making of record according to claim 1 and playback wavelength difference holographic element is characterized in that: the correlation parameter of expection holographic element comprises parameter, the playback light source wavelength that will use of expection of the holographic element that expection will be accomplished and the wavelength of the recording light source that will use in the described step 1).
3. the method for making of record according to claim 2 and playback wavelength difference holographic element is characterized in that: the specific implementation that described step 2) correlation parameter is changed into the parameter of recording beam path is:
Calculate the parameter of recording beam path according to the wavemeter of the holographic element parameter of expecting, reproduction light source and recording light source.
4. the method for making of record according to claim 3 and playback wavelength difference holographic element is characterized in that: the specific implementation of handling the holographic recording medium that exposed in the described step 4) is: according to selected glued membrane type the holographic negative that exposed is carried out photographic fixing, development, drying and sealing.
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| CN 201010583230 CN102053299A (en) | 2010-12-10 | 2010-12-10 | Method for manufacturing holographic element for recording and redisplaying wavelength difference |
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| CN 201010583230 CN102053299A (en) | 2010-12-10 | 2010-12-10 | Method for manufacturing holographic element for recording and redisplaying wavelength difference |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329200A (en) * | 2017-09-01 | 2017-11-07 | 佛山科学技术学院 | A kind of holographic anti-blue light film and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1373397A (en) * | 2001-02-28 | 2002-10-09 | 南开大学 | One-step method for making bulk holographic element without astigmation |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1373397A (en) * | 2001-02-28 | 2002-10-09 | 南开大学 | One-step method for making bulk holographic element without astigmation |
Non-Patent Citations (1)
| Title |
|---|
| 《中国激光》 19950630 翟宏琛 等 用光折变晶体制作的消像散体全息阵列照明器 第455-459页 1-4 第22卷, 第6期 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329200A (en) * | 2017-09-01 | 2017-11-07 | 佛山科学技术学院 | A kind of holographic anti-blue light film and preparation method thereof |
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Application publication date: 20110511 |