JPS5638072A - Erasing level monitoring method of thermoplastic resin base hologram material - Google Patents

Erasing level monitoring method of thermoplastic resin base hologram material

Info

Publication number
JPS5638072A
JPS5638072A JP5242879A JP5242879A JPS5638072A JP S5638072 A JPS5638072 A JP S5638072A JP 5242879 A JP5242879 A JP 5242879A JP 5242879 A JP5242879 A JP 5242879A JP S5638072 A JPS5638072 A JP S5638072A
Authority
JP
Japan
Prior art keywords
hologram material
hologram
erasing
thermoplastic
erasing level
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.)
Granted
Application number
JP5242879A
Other languages
Japanese (ja)
Other versions
JPS6255668B2 (en
Inventor
Masane Suzuki
Yoichi Yamatari
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.)
Fujinon Corp
Original Assignee
Fuji Photo Optical Co 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 Fuji Photo Optical Co Ltd filed Critical Fuji Photo Optical Co Ltd
Priority to JP5242879A priority Critical patent/JPS5638072A/en
Publication of JPS5638072A publication Critical patent/JPS5638072A/en
Publication of JPS6255668B2 publication Critical patent/JPS6255668B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Holo Graphy (AREA)

Abstract

PURPOSE: To observe the erasing level of a thermoplastic hologram level easily and surely by optically detecting the recording information or COARSE deformation structure remaining in the thermoplastic hologram material.
CONSTITUTION: An optical system is constituted by a thermoplastic hologram material after erasing processing as, for example, a target for monitoring, a converging lens screen 34, etc. It in this optical system the luminous flux from a spot light source is irradiated as parallel luminous fluxes to a hologram material 30 and is then converged by a lens 32, a spot image is formed on the screen 34 if the hologram material 30 is of a smooth surface having no unevenness. Whereas, if the erasing processing of the hologram material 30 is imperfect, it results in that the spot image on the screen 34 accompanies halo rings. The distribution or intensity thereof is larger as the erasing level of the hologram is lower; therefore, the erasing level is decided by observing the halo rings.
COPYRIGHT: (C)1981,JPO&Japio
JP5242879A 1979-04-27 1979-04-27 Erasing level monitoring method of thermoplastic resin base hologram material Granted JPS5638072A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5242879A JPS5638072A (en) 1979-04-27 1979-04-27 Erasing level monitoring method of thermoplastic resin base hologram material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5242879A JPS5638072A (en) 1979-04-27 1979-04-27 Erasing level monitoring method of thermoplastic resin base hologram material

Publications (2)

Publication Number Publication Date
JPS5638072A true JPS5638072A (en) 1981-04-13
JPS6255668B2 JPS6255668B2 (en) 1987-11-20

Family

ID=12914491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5242879A Granted JPS5638072A (en) 1979-04-27 1979-04-27 Erasing level monitoring method of thermoplastic resin base hologram material

Country Status (1)

Country Link
JP (1) JPS5638072A (en)

Also Published As

Publication number Publication date
JPS6255668B2 (en) 1987-11-20

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