SHAPE MEASUREMENT METHOD AND SHAPE MEASUREMENT DEVICE
|Posted date||Sep 21, 2017|
|International application number||2016JP088196|
|International publication number||WO 2017149912|
|Date of international filing||Dec 21, 2016|
|Date of international publication||Sep 8, 2017|
|Title||SHAPE MEASUREMENT METHOD AND SHAPE MEASUREMENT DEVICE|
|Abstract||A shape measurement method to which the present invention is applied is provided with: a step for irradiating an object to be measured with a light pulse stream in which a plurality of light pulses having a prescribed frequency distribution with respect to a time axis are disposed in a consecutive sequence in time series; and a step for measuring the optical shape of the object to be measured using the correspondence relationship between the sequence numbers of the light pulses of a plurality of light pulse streams to be received after the emitted light pulses are applied to the object to be measured, and using the correspondence relationship between the frequency distributions in the light pulses.|
|Outline of related art and contending technology||
To be measured by using light (the object to be measured) a method of measuring the shape, the non-contact, destructive and it has excellent properties, industry, medical as well as the expected to be applied to the field of basic science and. Light is used as the shape measurement device, also referred to as a so-called moire method for example, the encoded a method using a pattern of light, such as a method based on the distance calculating part which has been proposed a variety of methods.
For example, to Patent Document 1, a regular color change over the light pulse is generated the chirp and the chirp the optical pulse generation means, the workpiece (object to be measured) the chirped light generating means via the chirp from the combined light, the measurement value acquired two-dimensional information of the reflected light in the reference time based on the color of light to a three-dimensional three-dimensional information acquisition means, a three-dimensional measuring device is disclosed. This three-dimensional measuring apparatus, the light which is generated by the chirp of the chirp pulse is irradiated to an object being measured, obtained via the measuring object light is obtained. By means of the three-dimensional information at the time of the measurement standard the acquired color information of the light, the three-dimensional shape of the measurement object in association with.
As a measurement technique to another shape, for example, to Patent Document 2, light is emitted to the object of the reflected image is captured and the amount of time required to measure the distance to the object is measured using a three-dimensional shape measuring method in (shape measuring method), and encoding a sequence of the light emitted, the encoded light by decoding the reflected image of the three-dimensional shape measurement method for distance measurement is disclosed. In the three-dimensional shape measuring method, light emitted toward the measurement target is, a substantially flat or planar light light is used. In addition, the coding of the order of the light, or wavelength of the light beam can be changed by changing the timing of light is performed.
|Scope of claims||
|IPC(International Patent Classification)||
National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
Contact Information for " SHAPE MEASUREMENT METHOD AND SHAPE MEASUREMENT DEVICE "
- The University of Electro-Communications Intellectual Property Office
- URL: http://www.ip.uec.ac.jp/
- Address: 1-5-1, Choufugaoka, Chofu-shi, Tokyo, Japan , 182-8585
- Fax: 81-42-443-5839