Title:
OPTICAL ASSEMBLY FOR THREE-DIMENSIONAL MEASUREMENT DEVICE AND THREE-DIMENSIONAL MEASUREMENT DEVICE EQUIPPED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2020/246265
Kind Code:
A1
Abstract:
This optical assembly (13A) for a three-dimensional measurement device is provided with: an optical lens (132A) supported by a lens barrel (133); and an optical device (131) supported by a support structure part. The lens barrel (133) is fixed to the support structure part, and the optical device (131) is disposed on one among a pair of conjugate planes of the optical lens (132A). The support structure part is constructed by a composite structural body in which inter-element distance, which is the axial distance between the optical device (131) and the optical lens (132A), is adjusted according to temperatures by combining at least a first member (134) and a second member (135) that have mutually different linear expansion coefficients. Accordingly, at least a portion of a deviated amount of a focal position of the optical lens (132A) caused by temperatures is cancelled by the inter-element distance varying according to the temperatures.
Inventors:
OKUNO MOTOHARU (JP)
NAKATSUKA HITOSHI (JP)
INODA TAKESHI (JP)
ARIYOSHI TOMONORI (JP)
NAKATSUKA HITOSHI (JP)
INODA TAKESHI (JP)
ARIYOSHI TOMONORI (JP)
Application Number:
PCT/JP2020/020272
Publication Date:
December 10, 2020
Filing Date:
May 22, 2020
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO (JP)
International Classes:
G03B15/00; G01B11/00; G01B11/25; G02B7/02; H04N5/225
Domestic Patent References:
| WO2017212570A1 | 2017-12-14 | |||
| WO2010134376A1 | 2010-11-25 |
Foreign References:
| JP2001272587A | 2001-10-05 | |||
| JP2008176078A | 2008-07-31 | |||
| JP2008304641A | 2008-12-18 | |||
| JP2012079294A | 2012-04-19 | |||
| JP2008046561A | 2008-02-28 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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