JPH0238938A - Optical axis measuring device - Google Patents

Optical axis measuring device

Info

Publication number
JPH0238938A
JPH0238938A JP18847688A JP18847688A JPH0238938A JP H0238938 A JPH0238938 A JP H0238938A JP 18847688 A JP18847688 A JP 18847688A JP 18847688 A JP18847688 A JP 18847688A JP H0238938 A JPH0238938 A JP H0238938A
Authority
JP
Japan
Prior art keywords
optical axis
lens
light
emitting element
light emitting
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP18847688A
Other languages
Japanese (ja)
Inventor
Tetsuo Kumazawa
Nae Yoneda
Makoto Shimaoka
Yasutoshi Yagyu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP18847688A priority Critical patent/JPH0238938A/en
Publication of JPH0238938A publication Critical patent/JPH0238938A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To accurately decide an optical axis by irradiating an FO lens or a spherical mirror, optical component parts and a light emitting element in order with a thin flux of collimated beam and simultaneously observing an electromotive current generated in the light emitting element.
CONSTITUTION: Light projected from a visible light He-Nc laser 4 is perpendicularly bent by a mirror 5 equipped with a fine adjustment base connected to a personal computer 7 and irradiates the lens of a cap 2 which seals the light emitting element 1. The reflected light from the surface of the lens 2 is adjusted so that it returns in the same path as incident light and set as a basic optical axis. Next, the FO lens 3 is disposed so that the basic optical axis perpendicularly passes in the center of the lens 3. Then, the light is successively projected in parallel with the basic optical axis while changing a distance H from the optical axis and the electromotive current generated in the light emitting element 1 is observed by the personal computer 7 through an ampere meter 6. The optical axis at the time when the electromotive current is maximum is set as the optical axis of an optical system to be measured. Thus, an accurate optical axis measuring device can be obtained.
COPYRIGHT: (C)1990,JPO&Japio
JP18847688A 1988-07-29 1988-07-29 Optical axis measuring device Pending JPH0238938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18847688A JPH0238938A (en) 1988-07-29 1988-07-29 Optical axis measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18847688A JPH0238938A (en) 1988-07-29 1988-07-29 Optical axis measuring device

Publications (1)

Publication Number Publication Date
JPH0238938A true JPH0238938A (en) 1990-02-08

Family

ID=16224394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18847688A Pending JPH0238938A (en) 1988-07-29 1988-07-29 Optical axis measuring device

Country Status (1)

Country Link
JP (1) JPH0238938A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6017993A (en) * 1996-08-14 2000-01-25 Showa Denko Kabushiki Kaisha Thermoplastic resin composition containing titanium dioxide pigment, and process for preparing same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6017993A (en) * 1996-08-14 2000-01-25 Showa Denko Kabushiki Kaisha Thermoplastic resin composition containing titanium dioxide pigment, and process for preparing same
US6107390A (en) * 1996-08-14 2000-08-22 Showa Denko K.K. Thermoplastic resin composition containing titanium dioxide pigment, and process for preparing same

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