Measuring instrument

Patent metadata

Field	Value
Publication number	US-11415402-B2
Application number	US-201916701610-A
Country	US
Kind code	B2
Filing date	Dec 3, 2019
Priority date	Dec 26, 2018
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A measuring instrument that reads a measure including a plurality of reading patterns arranged in a length direction of the measure, each reading pattern including a plurality of patterns arranged in a width direction of the measure, includes: a flattening member that increases a flatness of the measure; and a first reader that optically reads the plurality of patterns arranged in the width direction included in a single reading pattern from the measure in a state where the flatness is increased by the flattening member.

First claim

What is claimed is:

1. A measuring instrument that reads a measure including a plurality of reading patterns arranged in a length direction of the measure, each reading pattern including a plurality of patterns arranged in a width direction of the measure, comprising:
a flattening member that increases a flatness of the measure; and
a plurality of first readers arranged in the width direction, that optically read the plurality of patterns arranged in the width direction included in a single reading pattern from the measure in a state where the flatness is increased by the flattening member.

2. The measuring instrument as claimed in claim 1 , further comprising:
a plurality of second readers arranged in the length direction, that optically read a plurality of patterns arranged in the length direction of the measure.

3. A measuring instrument that reads a measure including a plurality of reading patterns arranged in a length direction of the measure, each reading pattern including a plurality of patterns arranged in a width direction of the measure, comprising:
a reel around which the measure is wound; and
a first reader that optically reads the plurality of patterns arranged in the width direction included in a single reading pattern from the measure in a state where the measure is wound around the reel.

4. A measuring instrument that reads a measure including a plurality of reading patterns arranged in a length direction of the measure, each reading pattern including a plurality of patterns arranged in a width direction of the measure, comprising:
a pressing member that presses the measure; and
a first reader that optically reads the plurality of patterns arranged in the width direction included in a single reading pattern from the measure in a state where the pressing member presses the measure.

5. A measuring instrument that reads a measure including a plurality of reading patterns arranged in a length direction of the measure, each reading pattern including a plurality of patterns arranged in a width direction of the measure, comprising:
a flattening member that increases a flatness of the measure;
a first reader that optically reads the plurality of patterns arranged in the width direction included in a single reading pattern from the measure in a state where the flatness is increased by the flattening member;
a first case that stores the measure; and
a second case that stores the first reader and is detachable to the first case.

6. A measuring instrument that reads a measure including a plurality of patterns arranged in a width direction of the measure, comprising:
a first reader that optically reads the plurality of patterns; and
a corrector that corrects signals read by the first reader so as to compensate for a difference between a plurality of distances, in a direction where the measure and the first reader face each other, between the measure and the first reader at positions where the plurality of patterns are provided.

7. The measuring instrument as claimed in claim 6 , further comprising:
a first case that stores the measure; and
a second case that stores the first reader and is detachable to the first case.

8. A measuring instrument that reads a measure including a plurality of reading patterns arranged in a length direction of the measure, each reading pattern including a plurality of patterns arranged in a width direction of the measure, comprising:
a first reader that optically reads the plurality of patterns arranged in the width direction;
a second reader that optically reads a plurality of patterns arranged in the length direction; and
a corrector that corrects a length obtained from a reading result of the first reader, based on a reading result of the second reader.

9. The measuring instrument as claimed in claim 8 , further comprising:
a first case that stores the measure; and
a second case that stores the first reader and is detachable to the first case.

Assignees

• Fujitsu Component Ltd

Inventors

• Koike Tamotsu
• Funakoshi Katsuya
• Kikuchi Maiko

Classifications

• G01B3/1041

  characterised by casings · CPC title

• G01B21/02 Primary

  for measuring length, width, or thickness (G01B21/10 takes precedence) · CPC title

• G01B2003/1015

  engaging the tape in a direction transversal to the tape itself · CPC title

• G01D5/24433

  by mechanical means · CPC title

• G01D5/34792

  with only digital scales or both digital and incremental scales · CPC title