KR100711506B1 - Grid Screens for Moire Topography - Google Patents

Abstract

The present invention relates to a grating screen for moiretography, to form a frame-shaped housing in which a space is formed in the center so as to project an object in order to form a grating by moiretography phenomenon, a plurality of equal intervals at both ends of the housing To form a gap between the protrusion maintaining the projection and the groove-shaped spacing holding grooves to be inserted into the spacing holding groove to form an optical fiber to form a grid while maintaining a gap in the housing, the groove shape at the outer end of the spacing holding groove A screen portion formed by forming a settling groove of the optical fiber inserted into the spaced groove to be settled and inserted into the settling groove so that the grid formed of the optical fiber is fixed while maintaining an equal interval, and forming a fastening portion above and below the housing; Inserted into and fixed to the gap between the space keeping grooves while being coupled to the fastening portion of the screen by the fastening means. Forming a cover body formed with a plurality of fixing projections of a corresponding shape and size is characterized in that it comprises a cover portion formed to be inserted into the gap holding groove to be fixed without moving the optical fiber wound in the settle groove in place .

Moire Topography, Lattice Screen, Optical Fiber, Settling Home, Cover Body

Description

Grid Screen for Moire Topography

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view showing a grating screen for moirography in the prior art.

2 is an enlarged, partially cut away perspective view showing a prior art grating screen for moirography.

Figure 3 is a front view showing a grating screen for moirography according to the present invention.

4 is an enlarged exploded perspective view of a partial cutaway showing a grating screen for moirography in accordance with the present invention.

5 is a partially cutaway perspective view showing a grating screen for moirography according to the present invention.

* Explanation of symbols for main parts of drawings *

100: screen 110: screen portion

111 housing 112 optical fiber

113: spacing maintenance groove 114: spacing maintenance projection

115: settle groove 116: fastening portion

120: cover portion 121: cover body

122: fixing protrusion 123: fastening means

The present invention relates to a grating screen for moiretography, and more particularly, to form a screen for stereoscopic imaging in a non-contact measurement technique, such as moiretography, the gap maintaining groove and the gap maintaining groove to form a continuous optical fiber while maintaining the gap Moiré which is easy to assemble and reduces installation and manufacturing costs while maintaining the grid spacing precisely by installing to fix the optical fiber inserted into the gap maintaining groove with the cover provided with fixing projections on the screen housing in which the optical fiber is installed. A grid screen for topography is provided.

In general, non-contact measurement technology for measuring a complex three-dimensional shape without contact is a technique for measuring an external shape of a three-dimensional shape in a simple and quick time without affecting a measurement object since measurement without contact is possible.

This non-contact measurement technology has been applied to various workpieces that are difficult to measure the surface due to the difficulty of measuring soft objects or shapes that are difficult to be contacted by the measuring machine, but recently, a measuring method has been developed to medically prove the dynamic shape of the human body. The demand for non-contact measurement technology is on the rise.

Among such non-contact measuring techniques, a three-dimensional shape is measured using parallax of the eye, and a moire topography technique using a grid pattern is mainly used so that a user can check the result with the naked eye.

In this type of moiretography, when the grid is projected onto the surface of the object and the shadow of the grid is projected from different angles, the grid is deformed by the irregularities of the surface of the object. When the lattice overlaps with the lattice on the image of the deformed lattice, the moiré stripes occur because the pitch is changed at the location where the lattice is deformed. A grid irradiation type in which the shadow of the grid is dropped on the object with the light emitted from a point light source, placed in front of the object, and viewed through the same grid, and the reference grid is projected onto the object with a lens, There is a lattice projection where a moire fringe is obtained by overlapping another lattice on the observation of the deformed lattice.

Since the grid irradiation type puts the grid directly in front of the measurement object, the distance from the measuring device to the object is not very large, and the grid projection type can measure a certain distance away from the object for the grid that is about the same size as the object. Since it is magnified and projected by the lens, it can be measured with a small grid.

The flexibility of the shape measuring device is high, for example, by changing the magnification of the lens, so that the size of the object can be widened.

Since the gratings and the lenses on the projection side and the observation side are independent of each other, if the accuracy is not sufficient, an error occurs in the measurement result. There is also a method of using the grid image projected on the reference plane as a reference stripe instead of optically overlapping the observation side gratings, and generating moire stripes numerically by image processing. have.

Because moiré stripes appear as contours on the surface of objects, there are various studies such as how to determine the order of stripes using two kinds of grids with different intervals in order to obtain a three-dimensional shape.

Since the measurement by the moiré method can capture all the information by taking a single image, it is possible to capture the shape of an instant of an object changing every moment and show its power in vibration analysis.

As such, moiremotot displays the three-dimensional surface in a contour form through a grid pattern so that a general user, not an expert, can easily recognize the three-dimensional shape.

As described above, the surface of the human body is represented in the form of three-dimensional contours through the photographing of the musculoskeletal body to maintain the body shape by applying the principle to the used moire motorography, and using the results, the state of the muscles such as abnormal tension, contraction, relaxation, By identifying distortions of body shape such as the aft of spine, deformation, asymmetry, etc., it is used to confirm the association with pain and to correct body shape.

The human body analysis equipment using moiremotography analyzes the body three-dimensionally to examine scoliosis, correct the body shape, contraction of the muscular dynamometer, abnormality such as tension, build up, ubiquity, and identify the cause of perceptual symptoms such as pain and paralysis, and rehabilitation. It is used for the diagnosis of obesity, body shape, hair loss management, and medical diseases in medicine and exercise clinics, and for the study of body shape in educational institutions.

As described above, the moiré tomography to be used is to perform the measurement in the form of a grating on the measurement object through the grating screen.

This, prior art grating screen for moiretopography is as follows with reference to FIGS. 1 and 2.

A plurality of fixing pins 13 for fixing the optical fiber 12 so as to form a grid pattern on both sides of the frame-shaped housing 11 having a space formed in the center to project a three-dimensional shape, a plurality of fixing pins 13 A gap retaining groove 14 is inserted into both sides of the housing so as to be fixed while maintaining a gap between the fixed optical fibers 12 so that the gap between the fixed optical fibers 12 is fixed. Inserted into the retaining groove 14 is coupled to the housing in the form of a grid to configure the screen (10).

As described above, the grating screen for the moiretography of the prior art configured has to form a plurality of fixing pins in the housing at a designated position according to the grating-shaped optical fiber spacing on the side of the housing. There has been a problem that the increase in the cost of installation and manufacturing to increase.

In addition, the prior art grate screen for moiretography is to be inserted into the gap retaining groove formed on both sides of the housing in the state in which the optical fiber is fixed with a pin to be fixed to the pin to be fixed while maintaining the tension in the gap holding groove. By doing so, it was difficult to maintain the tension and there was a problem that the process is separated and takes a lot of time for installation work.

In addition, the prior art grate screen for moiretography is formed by fixing a plurality of fixing pins in the correct position to maintain a constant tension, so that the fixed time is delayed and sag occurs if the tension is not maintained, the grid pattern is There was a problem that could not be implemented to get the correct screen.

In order to solve the problem, the main object of the present invention is to form an optical fiber in the form of a lattice while maintaining a distance by continuously forming a gap maintaining groove and a gap maintaining groove formed in the grid-shaped screen for stereoscopic imaging, It is easy to assemble and reduce installation and manufacturing costs while accurately maintaining the grid spacing of the screen by installing to fix the optical fiber inserted into the gap maintaining groove with a cover provided with a fixing projection on the installed screen housing.

As described above, the grating screen for moaretography of the present invention devised to achieve the object forms a frame-shaped housing in which a space is formed at the center so as to project an object in order to form a grating due to moaretographic phenomenon. The optical fiber is formed so that it becomes a lattice while being inserted into the gap retaining groove and inserted into the gap retaining groove so as to be alternately formed between the gap retaining protrusion of the protrusion shape and the groove type gap projecting projected to have a plurality of equal intervals at both ends. A groove-shaped settled groove is formed at the outer end of the wound to wind the optical fiber inserted into the spaced groove to be settled in the settling groove so that the grid formed of the optical fiber is fixed while maintaining an equal interval, and a fastening portion is formed at the top and bottom of the housing. The gap between the one screen portion and the space keeping groove while the fastening means is coupled to the fastening portion of the screen portion Forming a cover body having a plurality of fixing protrusions of a corresponding shape and size to be inserted into and fixed in the gap holding groove, the cover part being formed to be fixed without moving the optical fiber wound in the settling groove in a fixed position It is characterized by.

Thus, a preferred embodiment of the moire-to-graphic lattice screen of the present invention configured as described with reference to the drawings as follows.

Fig. 3 is a front view showing a grating screen for moiretograph according to the present invention, and Fig. 4 is a partially cutaway exploded perspective view showing a grating screen for moiretograph according to the present invention, and Fig. 5 is a moire topography according to the present invention. Partial cutaway perspective view showing a lattice screen.

As shown in Figures 3 to 5, the screen for moiretography lattice 100 of the present invention is the screen portion 110 is provided with an optical fiber 112 to project the grid shape due to the moirreography phenomenon to the object, It comprises a cover portion 120 formed to be fixed while preventing the flow of the optical fiber 112 at both ends of the screen portion 110.

The screen unit 110 forms a frame-shaped housing 111 in which a space is formed at the center so as to project an object in order to form a lattice formed by a moirographical phenomenon, and a plurality of equal intervals at both ends of the housing 111. To form a gap maintaining protrusion 114 and a groove-shaped gap holding groove 113 protruding so as to be alternately inserted into the gap holding groove 113 to maintain a gap in the housing 111 to the optical fiber to be a grid And forming the groove 112 in the outer end of the gap holding groove 113, the insertion of the optical fiber 112 inserted into the gap holding groove 113 into the settle groove 115. It is wound so as to be formed so that the grating formed of the optical fiber 112 is fixed while maintaining the same interval, it is configured to form the fastening portion 116 up and down the housing 111.

The cover part 120 is coupled to the fastening part 116 of the screen part 110 by the fastening means 123, and the fixing protrusion 122 of a shape and size corresponding to be inserted and fixed in the gap of the space maintaining groove 113. Forming a plurality of cover body 121 is formed to be inserted into the gap maintaining groove 113 is configured to fix the optical fiber 112 wound in the settle groove 115 without flow in place.

As described above, the operation of the grating screen for moiretography according to the present invention is as follows.

First, in order to measure the musculoskeletal system and various three-dimensional shapes of the human body by using a moiretographing phenomenon, a frame-shaped housing 111 is manufactured to be projected outward to an object, and optical fibers 112 are formed at both sides of the housing 111 in the center. Regular gaps of the optical fiber 112 inserted and coupled to the gap maintaining groove 113 by alternately forming the gap maintaining protrusion 114 and the groove-shaped gap maintaining protrusion 114 protruding to be fixed in a grid form. A plurality of gap maintaining grooves 113 are installed between the gap maintaining protrusions 114 of the protrusion type to prevent separation while maintaining the gap.

Thus, in the state in which the gap holding groove 113 and the gap holding protrusion 114 are alternately formed on both sides of the housing 111, an arranging groove 115 is formed at the end of the gap holding protrusion 114 to maintain the gap holding groove ( 113 is inserted into the settled groove 115 formed at the end of the gap maintaining protrusion 114 formed on both sides to be wound and fixed while being wound so that the optical fiber inserted to be in the form of a grid is inserted into both sides. It is wound while inserting while being inserted into the gap maintaining groove 113 formed to be fixed to the settle groove 115 formed at the end of the gap holding protrusion 114 to improve the fixing force and the optical fiber 112 is integrally coupled to tension Install to keep it altogether.

As described above, the housing 111 is fixed to both sides of the housing 111 to be secured to the settling groove 115 while being inserted and wound while maintaining a gap in the gap maintaining groove 113 while preventing the separation with the gap maintaining protrusion 114. Fastening cover (121) by fastening the cover body 121 is provided with a fixing protrusion 122 protruding in the shape and size corresponding to the space maintaining groove 113 in the fastening portion 116 formed in the upper and lower fastening means (123) As the 122 is inserted into and fixed to the gap maintaining groove 113 into which the optical fiber 112 is inserted, the fixing force of the optical fiber 112 is improved and the flow of the optical fiber 112 by the external force is prevented.

Therefore, the gap retaining protrusion 114 and the gap retaining groove 113 formed at both ends of the screen 100 having a lattice shape are alternately formed for capturing by using a moirography. Thus, the separation of the optical fiber 112 is prevented and the gap is prevented. By forming the settling groove 115 at the end of the holding groove 113, the optical fiber 112 is wound and fixed integrally, so that the assembly and installation is easy while maintaining the overall tension, the fastening portion 116 of the housing 111 The cover body 121 having the fixing protrusion 122 for fixing the optical fiber 112 installed in the furnace gap maintaining groove 113 is coupled to the fastening means 123 to maintain the tension while preventing the flow of the optical fiber 112 installed. And improve bond life.

As described above, the screen for moiretography grating according to the present invention constitutes a screen for stereoscopic imaging in a moaretography method by continuously forming gap maintaining grooves and gap maintaining grooves to install the optical fibers in a grid shape while maintaining the gap, As the cover is provided with a fixing projection on the installed screen housing to fix the optical fiber inserted into the gap maintaining groove, it is easy to assemble while maintaining the grid spacing of the screen accurately and provides an effect of reducing the installation and manufacturing costs.

In addition, the grating screen for moiretopography of the present invention is formed in the housing of the screen installed to form a grating pattern of moiretopography, the gap holding groove and the gap holding projection to form a plurality of equal intervals on both sides, and the optical fiber at both ends Forming a settled groove that is inserted and fixed by inserting the optical fiber into the gap retaining groove, and placed in the settling groove to combine to form a lattice continuously, it is easy to adjust the tension as it is combined while crossing one line-shaped optical fiber Combined simply and quickly, it offers the effect of increasing installation efficiency.

In addition, the moire-to-graphic lattice screen of the present invention is placed on the groove-like settled grooves formed at both ends of the gap maintaining protrusion in a state where the optical fibers are inserted at equal intervals into a plurality of gap maintaining grooves formed between the gap maintaining protrusions at precise intervals. It is easy to install and shorten the installation time by forming the grid screen with optical fiber by fixing it by winding once.

In addition, the grating screen for moaography of the present invention is coupled to the optical fiber is placed in the settled end of the housing end portion of the housing formed with a plurality of gap maintaining projections and gap maintaining grooves wound so as to form a grid at equal intervals, the optical fiber is fixed By forming and combining a cover body formed to engage a plurality of fastening means formed in a plurality of fixing projections inserted into the gap maintaining grooves at both ends of the housing, thereby improving the fixing force of the optical fiber and absorbing the impact on the gap maintaining portion of the optical fiber by external force. It provides the effect of improving the life by minimizing external influences.

Claims (1)

In order to form a lattice formed by a moiretographing phenomenon, a frame-shaped housing is formed in which a space is formed at the center to project an object, and protrusions and grooves of a protrusion shape are formed to protrude to a plurality of equal intervals at both ends of the housing. The optical fiber inserted into the gap maintaining groove is formed by alternating the gap retaining groove to be inserted into the gap maintaining groove to form a fiber while maintaining the gap in the housing, and to form a groove-shaped settling groove at the outer end of the gap maintaining groove. A screen portion formed to be fixed while being inserted into a settling groove so that the grid formed of the optical fiber is fixed while maintaining equal intervals, and a fastening portion is formed at the top and bottom of the housing; The optical fiber wound in the settling groove by forming a cover body formed with a plurality of fixing protrusions of a shape and size corresponding to the screen unit to be inserted into the gap of the gap maintaining groove while being coupled to the fastening unit by the fastening means. Moirreographic lattice screen, characterized in that it comprises a cover portion formed to be fixed in place without flow.

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