TWI320848B - - Google Patents

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Publication number
TWI320848B
TWI320848B TW96115214A TW96115214A TWI320848B TW I320848 B TWI320848 B TW I320848B TW 96115214 A TW96115214 A TW 96115214A TW 96115214 A TW96115214 A TW 96115214A TW I320848 B TWI320848 B TW I320848B
Authority
TW
Taiwan
Prior art keywords
laser
read head
objective lens
scale
beam splitter
Prior art date
Application number
TW96115214A
Other languages
English (en)
Chinese (zh)
Other versions
TW200842312A (en
Inventor
Chih Liang Chu
chi feng Li
Original Assignee
Chih Liang Chu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chih Liang Chu filed Critical Chih Liang Chu
Priority to TW96115214A priority Critical patent/TW200842312A/zh
Publication of TW200842312A publication Critical patent/TW200842312A/zh
Application granted granted Critical
Publication of TWI320848B publication Critical patent/TWI320848B/zh

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Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Optical Distance (AREA)
TW96115214A 2007-04-27 2007-04-27 Duolaser focusing read head optical ruler TW200842312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW96115214A TW200842312A (en) 2007-04-27 2007-04-27 Duolaser focusing read head optical ruler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW96115214A TW200842312A (en) 2007-04-27 2007-04-27 Duolaser focusing read head optical ruler

Publications (2)

Publication Number Publication Date
TW200842312A TW200842312A (en) 2008-11-01
TWI320848B true TWI320848B (fr) 2010-02-21

Family

ID=44821941

Family Applications (1)

Application Number Title Priority Date Filing Date
TW96115214A TW200842312A (en) 2007-04-27 2007-04-27 Duolaser focusing read head optical ruler

Country Status (1)

Country Link
TW (1) TW200842312A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI498604B (zh) * 2013-01-04 2015-09-01 Univ Feng Chia Optical encoder and its correction method
CN104457589B (zh) * 2014-12-26 2016-05-04 苏州博众精工科技有限公司 一种用于检测电子产品高度差的自动化设备
CN108627097B (zh) * 2018-05-09 2020-05-08 广东工业大学 一种绝对式光栅尺
CN113124760B (zh) * 2019-12-30 2022-08-02 广东万濠精密仪器股份有限公司 反射式光栅尺

Also Published As

Publication number Publication date
TW200842312A (en) 2008-11-01

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees