| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for correcting light passing through the objective for an electronic camera into a light beam having a predetermined spectrum. SOLUTION: This is a method for correcting the spectrum of the light beam reaching the electronic camera after passing through the objective 10. An interference type filter 16 is provided in the objective 10. The interference type filter 16 may be a film on an independent optical element or ordinary optical component added to the objective 10. The interference filter film is arranged along the optical axis O. On the optical axis O, the light beam is substantially collimated and has a minimum light beam incidence angle to the film surface. Any passing light beam should have an angle of <=15 deg..
|
