CN1337605A - Rainbow hologram recorder - Google Patents
Rainbow hologram recorder Download PDFInfo
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- CN1337605A CN1337605A CN 01141705 CN01141705A CN1337605A CN 1337605 A CN1337605 A CN 1337605A CN 01141705 CN01141705 CN 01141705 CN 01141705 A CN01141705 A CN 01141705A CN 1337605 A CN1337605 A CN 1337605A
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- rainbow
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- holographic recording
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Abstract
The single beam rainbow hologram recording equipment contains light source, rainbow plate, imaging lens, holographic recording plate and control device, the light source can be laser or other monochromatic light source, and rainbow plate is placed in the imaging position of shot body by means of imaging lens, the film of holographic recording plate is closed to the rainbow plate, the shot body, imaging lens, rainbow plate and holographic recording plate are positioned on same optical axis. It can be used for shooting hologram, after imaged, through exposure and chemical treatment, a white light reproduced rainbow hologram can be obtained. Said equipment is compact in structure, simple and convenient in operation, and possesses extensive application in the holographic interferometric research of nondestructive test, stress and strain analysis and photoelastics.
Description
(1) technical field
The invention relates to a kind of holographic device, especially utilizes laser instrument or monochromaticity light source, rainbow version and imaging lens and a kind of single beam rainbow hologram recorder of obtaining preferably.
(2) technical background
Rainbow hologram recording method in the past (comprising single stage method and two step method) all is by the laser process different paths of two bundles from same light source, intersects with a certain angle on the glue face of hologram recording material, forms interference fringe and notes.In this type systematic, the small vibrations of any one optical element all can the havoc interference fringe in the recording beam path, causes the holographic recording failure.Therefore must adopt strict earthquake counter measure, as adopting earthquake table; All optical elements, hologram recording material, being recorded object etc. all must be careful fixing; Surrounding environment must not have a bit vibrations or gas disturbance.So the record of hologram must just can carry out in the laboratory of specified conditions, this makes the application of holographic recording, especially aspect Holographic Interferometry, as: be restricted in the application of engineering survey, nondestructive examination etc.
An existing step rainbow holography has the characteristics of the white light reproduction hologram image that can obtain high s/n ratio, and it is applied in the engineering survey of Holographic Interferometry.But need stable optical table, working environment and expensive optical element owing to take, this technology is restricted in actual applications.Since 1992, there has been the people to propose to adopt whole light path miniaturization to realize that the method for holoscope system obtains the purpose of practicability in the U.S., Japan and other countries, but still can't resolve the complicacy of light path system device and the stability problem of himself.
(3) summary of the invention
The purpose of the invention be to provide a kind of utilize laser instrument or monochromaticity preferably light source (as mercury lamp, uviol lamp, sodium vapor lamp etc.), holographic optical elements (HOE) and imaging lens with slit information and obtain need be with the rainbow hologram recorder of earthquake counter measure.
This device is provided with the light source of irradiation subject, holographic optical elements (HOE) (hereinafter to be referred as the rainbow version), imaging lens, holographic recording version, the control device with slit information, said light source can be LASER Light Source or the monochromatic source except that LASER Light Source, the rainbow version places the image space of imaging len to subject, the glue face of holographic recording version is close to after the rainbow version, and subject, imaging len, rainbow version and holographic recording version are positioned on the same optical axis.
For adopting LASER Light Source, said light source is made up of laser instrument, shutter, beam expanding lens, catoptron, and beam expanding lens is between laser instrument and catoptron, and the folded light beam of catoptron is shone subject, and shutter places between laser instrument and the beam expanding lens; Said control device is established exposure control unit and shutter release button, and shutter release button connects exposure control unit, and exposure control unit connects shutter.Shutter, shutter release button can be located in the camera bellows with imaging len, rainbow version, holographic recording version, become a camera arrangement.
For the monochromatic source that adopts except that LASER Light Source, said control device is established light source switch.
This device can be used for taking hologram, and imaging is after exposure and chemical treatment can obtain a white light reproduction rainbow hologram.
Whole shooting process is just as taking a picture with ordinary camera.Hologram image pickup method compared with common employing, this apparatus features is the restriction that recording process is not subjected to external environment, optical table and optical element vibrations, the similar of system and general camera, needn't adopt earthquake counter measure, can be in any environment recorded hologram, compact, simple, easy to operate, can obtain two dimension or three-dimensional rainbow hologram, in Holographic Interferometry researchs such as not damaged flaw detection, stress and strain analysis, photoelastic, have a wide range of applications.Owing to needn't use earthquake table and accurate optical component anchor clamps, reduce cost.
(4) description of drawings
Fig. 1 adopts the structural representation of LASER Light Source for this device.
Fig. 2 adopts the structural representation of non-laser light source for this device.
Fig. 3 for this device as rainbow hologram machine system schematic.
Fig. 4 is the rainbow version manufacturing system synoptic diagram of this device.
(5) specific embodiment
This device is when taking, and subject is by laser or other monochromaticjty light source irradiation preferably. Fig. 1 has shown and has used laser Whole light path system when doing light source. The camera section branch comprises imaging lens L, rainbow version HS, holographic recording version HR, shutter Button A, the i.e. interior included parts of frame of broken lines among Fig. 1. Different from ordinary camera is that shutter B is placed on light source to swash Light device exit is controlled the time for exposure with restriction light to the irradiation time of object O. The laser that sends from laser instrument S is through expanding After bundle mirror E expands, reflexed on the subject O by mirror M. The necessary covering dignity of light beam is to imaging lens L's All parts. The center of object, imaging lens, rainbow version and holographic recording version must be point-blank, namely must be coaxial. Holographic recording version HRThe glue face be close to rainbow version HS，H
SFacing to imaging lens L, L images in H with objectRGlue On the face. The recording image principle is: through rainbow version HSThe imaging light wave because diffraction is divided into straight wave transparent and diffracted wave, this two-beam ripple is at record dry plate HROn interfere with each other the hologram recorded picture. Shutter B is placed in the exit of laser instrument, Press the button A and namely open shutter and expose, exposure control unit P can set in advance the shutter opening time. HRThrough the exposure, Behind development, the bleaching, just form the rainbow hologram with subject image. Camera part L, H in the frame of broken linesS、H
RCan place respectively, also can make a camera bellows, with L, HS、H
RAll be placed in the camera bellows, whole camera bellows is exactly a photograph Camera can arbitrarily be moved. If without camera bellows, then whole system just must be carried out in the darkroom in shooting process.
When light source was not laser, as shown in Figure 2, the camera part did not change, as long as with light source S1Be placed on the mirror M place of Fig. 1, direct irradiation object O gets final product, and has saved shutter B, beam expanding lens E and mirror M, and shutter release button A is by shift knob A1Replace. Time for exposure this moment is controlled by the power supply that turns on and off light source. Time for exposure arrived several at tens seconds Minute scope in, specifically depend on the intensity of light source, the susceptibility of holographic recording medium, the size of subject etc.
The signal of rainbow holography camera system and device is such as Fig. 3. Holographic recording version HRThe glue face be close to rainbow version HS, rainbow version HSFacing to imaging lens L, light source irradiation is on object preferably for laser or other monochromaticjty, and imaging lens L images in holographic recording version H with objectRThe glue face on. Through rainbow version HSThe imaging light wave because diffraction is divided into straight wave transparent and diffracted wave, and at record dry plate HROn interfere with each other. Behind exposure, development, bleaching, just formation has object The rainbow hologram of image. D is dark box device among Fig. 3, with L, HS、H
RAll be placed in the camera bellows hologram record Process just needn't operate in the darkroom, and whole camera bellows is exactly a camera, can arbitrarily move and take. If need not be dark Case, then whole system just must be carried out in the darkroom in shooting process.
Rainbow version HSManufacturing system signal such as Fig. 4, this is actually the camera system of slit image hologram. The recording medium material Material is dichromated gelatin (DCG) or photoresist version (also claiming the photoetching hectograph). Recording process is complete with the shooting Fresnel Breath figure is the same. The light beam of laser instrument S output is earlier through mirror M1After be divided into two bundles through spectroscope again, wherein a branch of through mirror M3Reflection arrives recording medium H again behind spatial filter F filtering and collimation lens L collimationSAs reference light; In addition Light beam is through mirror M2Reflection forms a narrow strip light beam through cylindrical mirror E again and incides on the frosted glass G with slit, and the diffused light by frosted glass arrives recording medium H as thing lightSAnd interfere with reference light. Locate through exposure, development etc. Form the rainbow version after the reason. HSIt is a critical component of rainbow holography camera system among Fig. 4.
Claims (7)
1, rainbow hologram recorder, it is characterized in that being provided with light source, rainbow version, imaging lens, holographic recording version, the control device of irradiation subject, said light source can be LASER Light Source or the monochromatic source except that LASER Light Source, the rainbow version places the image space of imaging len to subject, the glue face of holographic recording version is close to after the rainbow version, and subject, imaging len, rainbow version and holographic recording version are positioned on the same optical axis.
2, rainbow hologram recorder as claimed in claim 1, it is characterized in that light source adopts LASER Light Source, said light source is made up of laser instrument, shutter, beam expanding lens, catoptron, beam expanding lens is between laser instrument and catoptron, the folded light beam irradiation subject of catoptron, shutter places between laser instrument and the beam expanding lens; Said control device is established exposure control unit and shutter release button, and shutter release button connects exposure control unit, and exposure control unit connects shutter.
3, rainbow hologram recorder as claimed in claim 2 is characterized in that shutter, shutter release button and imaging len, rainbow version, holographic recording version be located in the camera bellows, becomes a camera arrangement.
4, rainbow hologram recorder as claimed in claim 1 is characterized in that light source adopts the monochromatic source except that LASER Light Source, and said control device is established light source switch.
5, rainbow hologram recorder as claimed in claim 3, it is characterized in that the camera section branch comprises imaging lens, rainbow version, holographic recording version, shutter release button, shutter is placed on the laser instrument exit, the laser that sends from laser instrument is after beam expanding lens expands bundle, to subject, the center of object, imaging lens, rainbow version and holographic recording version is coaxial by mirror reflects.
6, rainbow hologram recorder as claimed in claim 1 is characterized in that imaging lens, rainbow version, the holographic recording version of camera part is placed in the camera bellows.
7, rainbow hologram recorder as claimed in claim 1 is characterized in that light source is the single beam source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011417056A CN1152286C (en) | 2001-09-13 | 2001-09-13 | Rainbow hologram recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011417056A CN1152286C (en) | 2001-09-13 | 2001-09-13 | Rainbow hologram recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1337605A true CN1337605A (en) | 2002-02-27 |
| CN1152286C CN1152286C (en) | 2004-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011417056A Expired - Fee Related CN1152286C (en) | 2001-09-13 | 2001-09-13 | Rainbow hologram recorder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1152286C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561938B (en) * | 2009-05-14 | 2011-12-21 | 浙江师范大学 | Method for manufacturing rainbow hologram through computer |
-
2001
- 2001-09-13 CN CNB011417056A patent/CN1152286C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561938B (en) * | 2009-05-14 | 2011-12-21 | 浙江师范大学 | Method for manufacturing rainbow hologram through computer |
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| Publication number | Publication date |
|---|---|
| CN1152286C (en) | 2004-06-02 |
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