Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD AND DEVICE FOR MEASURING SURFACE REFLECTION FACTOR OF LIGHT-TRANSMITTING TYPE OPTICAL FUNCTION FILM FOR PREVENTING REFLECTION AND METHOD FOR MANUFACTURING LIGHT-TRANSMITTING TYPE OPTICAL FUNCTION FILM FOR PREVENTING REFLECTION
Document Type and Number:
Japanese Patent JPH11352019
Kind Code:
A
Abstract:

To accurately measure a front reflection factor by the nondestructive method by calculating the front reflection factor of an optical function film for preventing light- transmitting type reflection from a rear reflection factor, a total reflection factor, and a transmission rate.

A reference rear reflection factor is calculated in advance for a representative light-transmission-type optical function film for preventing reflection. Actual total reflection rate and transmission rate are measured in real time for the light-reflection type optical function film for preventing reflection to be measured. By substituting a reference rear reflection factor that is obtained in advance, a total reflection factor being measured for the light- transmitting type optical function film for preventing reflection to be measured, and transmittance for an operation expression, the front reflection factor of the light-transmitting type optical function film for preventing reflection is calculated, thus accurately calculating the surface reflection factor of the optical function film, without coating the rear of the light- transmission-type optical function film for preventing reflection with a black paint, namely without destroying the light-transmitting type optical function film for preventing reflection.


Inventors:
MIHASHI SHINOBU
Application Number:
JP15806998A
Publication Date:
December 24, 1999
Filing Date:
June 05, 1998
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SONY CORP
International Classes:
G01N21/47; C03C17/34; G01M11/02; G01N21/59; (IPC1-7): G01M11/02; C03C17/34
Attorney, Agent or Firm:
Takahisa Sato