Title:
電子レベル及び電子レベル用標尺
Document Type and Number:
Japanese Patent JP5530873
Kind Code:
B2
Abstract:
[Problem] To be able to easily expand a measurable range, so as to perform both of a long distance measurement and a short distance measurement, and not to perform an incorrect measurement even when a conventional leveling rod for electronic level is mixed and used. [Solution Means] A leveling rod (1) for electronic level has a first pattern (1A) on which a grayscale is formed according to a predetermined rule for a measurement within a first distance range, and a second pattern (1B) which is enlarged or reduced with respect to a pattern (1R) in which the grayscale of the first pattern is inverted for a measurement within a second distance range different from the first distance range. An electronic level includes a height measuring means measuring a height of a collimation point from an output signal from a line sensor so as to correspond to the first pattern, a grayscale inverting means inverting the grayscale of the output signal fromthe line sensor in order to correspond to the secondpattern, and a height correcting means correcting the height measured by the height measuring means according to a reduction scale of the second pattern with respect to the first pattern.
Inventors:
Takashi Nagao
Application Number:
JP2010204346A
Publication Date:
June 25, 2014
Filing Date:
September 13, 2010
Export Citation:
Assignee:
Sokia Topcon Co., Ltd.
Topcon Co., Ltd.
Topcon Co., Ltd.
International Classes:
G01C15/06; G01C5/00
Domestic Patent References:
| JP5322562A | ||||
| JP3064441U | ||||
| JP59168116U | ||||
| JP2001091256A | ||||
| JP11183164A |
Attorney, Agent or Firm:
Hideto Yagi
Osamu Shimizu
Osamu Shimizu
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