CN1152286C - Rainbow hologram recorder - Google Patents
Rainbow hologram recorder Download PDFInfo
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- CN1152286C CN1152286C CNB011417056A CN01141705A CN1152286C CN 1152286 C CN1152286 C CN 1152286C CN B011417056 A CNB011417056 A CN B011417056A CN 01141705 A CN01141705 A CN 01141705A CN 1152286 C CN1152286 C CN 1152286C
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- rainbow
- light source
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- imaging lens
- holographic recording
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Abstract
The present invention relates to a holographic photographic device, particular to a single beam rainbow hologram recording device which utilizes a laser or a light source with good monochromaticity, a rainbow plate and an imaging lens. The present invention is provided with a light source, a rainbow plate, an imaging lens, a holographic recording plate and a control device, wherein the light source can be laser light or a monochromatic light source except a laser light source; the rainbow plate is arranged in a position so that an object to be shot can be imaged on the Imaging lens; the plate surface of the holographic recording plate tightly adheres to the rainbow plate; the object to be shot, the Imaging lens, the rainbow plate and the holographic recording plate are arranged on the same optical axis. The present invention can be used for shooting holograms; after the object is imaged, the image is exposed and chemically processed so as to obtain a rainbow hologram with reproduced white light. The shooting process is similar to that of an ordinary camera, the recording process is free from the confinement of external environment, an optical platform and the vibration of optical elements, and shakeproof measures are needless. The present invention has the advantages of compactness, simplicity, convenient operation and low cost; the present invention has wide application prospects in holographic interference metering research of non-destructive flaw detection, stress and strain analysis, photoelastic study, etc.
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) embodiment
This device is when taking, and subject is by laser or other monochromaticity light source irradiation preferably.Fig. 1 has shown the whole optical path system when doing light source with laser.The camera section branch comprises imaging lens L, rainbow version H
S, holographic recording version H
R, shutter release button A, i.e. included parts in the frame of broken lines among Fig. 1.Different with ordinary camera is that shutter B is placed on light source laser instrument exit, with restriction light the irradiation time of object O is controlled the time shutter.The laser that sends from laser instrument S is reflexed on the subject O by mirror M after beam expanding lens E expands bundle.The necessary coverture dignity of light beam is to all parts of imaging lens L.The center of object, imaging lens, rainbow version and holographic recording version must be point-blank, promptly must be coaxial.Holographic recording version H
RThe glue face be close to rainbow version H
S, H
SFacing to imaging lens L, L with object image-forming in H
RThe glue face on.The image recording principle is: through rainbow version H
SThe imaging light wave because diffraction is divided into straight saturating ripple and diffracted wave, this two-beam ripple is at record dry plate H
ROn interfere with each other the hologram recorded picture.Shutter B is placed in the exit of laser instrument, presses the button A and promptly opens shutter and expose, and exposure control unit P can set in advance shutter and open the time.H
RAfter exposure, development, bleaching are handled, just form rainbow hologram with subject image.Camera partial L in the frame of broken lines, H
S, H
RCan place respectively, also can make a camera bellows, with L, H
S, H
RAll be placed in the camera bellows, whole camera bellows is exactly a camera, can arbitrarily move.If without camera bellows, then total 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 S
1Be 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 A
1Replace.Time shutter this moment is controlled by the power supply that turns on and off light source.Time shutter tens seconds in the scope of a few minutes, specifically depend on the intensity of light source, the susceptibility of holographic recording medium, the size of subject etc.
The signal of rainbow hologram machine system equipment is as Fig. 3.Holographic recording version H
RThe glue face be close to rainbow version H
S, rainbow version HS is facing to imaging lens L, laser or other monochromaticity preferably light source irradiation on object, imaging lens L with object image-forming in holographic recording version H
RThe glue face on.Through rainbow version H
SThe imaging light wave because diffraction is divided into straight saturating ripple and diffracted wave, and at record dry plate H
ROn interfere with each other.After exposure, development, bleaching are handled, just form rainbow hologram with subject image.D is the camera bellows device among Fig. 3, with L, H
S, H
RAll be placed in the camera bellows, the hologram record process just needn't be operated in the darkroom, and whole camera bellows is exactly a camera, can arbitrarily move and take.If without camera bellows, then total system just must be carried out in the darkroom in shooting process.
Rainbow version H
SManufacturing system signal as Fig. 4, this is actually slit image The Method for Making A Holograms system.The recording medium material is dichromated gelatin (DCG) or photoresist version (also claiming the photoetching hectograph).Recording process is the same with shooting Fresnel hologram.The light beam of laser instrument S output is earlier through mirror M
1After be divided into two bundles through spectroscope again, wherein a branch of through mirror M
3Reflection arrives recording medium H again behind spatial filter F filtering and collimation lens L collimation
SAs reference light; Another Shu Guangjing mirror M
2Reflection forms a narrow strip light beam through cylindrical mirror E again and incides on the frosted glass G that has slit, and the diffused light by frosted glass arrives recording medium H as thing light
SAnd interfere with reference light.After handling, exposure, development etc. form the rainbow version.H
SIt is a critical component of rainbow holoscope 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 lens to subject, the glue face of holographic recording version is close to after the rainbow version, and subject, imaging lens, 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 comprises 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 lens, 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 comprises light source switch.
5, rainbow hologram recorder as claimed in claim 2, it is characterized in that imaging lens, rainbow version, holographic recording version and shutter release button be located in the camera bellows, become the system of taking pictures, 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 CN1337605A (en) | 2002-02-27 |
| CN1152286C true 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) |
Families Citing this family (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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2001
- 2001-09-13 CN CNB011417056A patent/CN1152286C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1337605A (en) | 2002-02-27 |
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