Claims
- 1. An illuminating optical system for illuminating a film with a light source, comprising:
- an axially symmetric lens system; and
- an anamorphic lens system, including a cylindrical lens in the form of a Fresnel lens, positioned closer than said axially symmetric lens system to the light source.
- 2. An illuminating optical system as claimed in claim 1, wherein said axially symmetric lens system is fixedly disposed on an optical axis, and said anamorphic lens system is movable between a position on said optical axis and a position retracted from said optical axis.
- 3. An illuminating optical system as claimed in claim 1 further including illumination control means for causing an illuminating optical system formed only of said axially symmetric lens system to illuminate the film in a first mode, and causing an illuminating optical formed only of said anamorphic lens system to illuminate the film in a second mode.
- 4. An illuminating optical system for illuminating a film with a light source, comprising:
- an axially symmetric lens system; and
- an anamorphic lens system, including a cylindrical lens, disposed closer than said axially symmetric lens system to the light source, said cylindrical lens is a plano-convex lens with a planar surface opposed toward the light source.
- 5. An illuminating optical system as claimed in claim 4, wherein said axially symmetric lens system is fixedly disposed on an optical axis, and said anamorphic lens system is movable between a position on said optical axis and a position retracted from said optical axis.
- 6. An illuminating optical system as claimed in claim 4 further including illumination control means for causing an illuminating optical system formed only of said axially symmetric lens system to illuminate the film in a first mode, and causing an illuminating optical formed only of said anamorphic lens system to illuminate the film in a second mode.
- 7. An illuminating optical system for illuminating a film with a light source, comprising:
- an axially symmetric lens system; and
- an anamorphic lens system, including a cylindrical lens in the form of a positive meniscus lens with a surface having a negative power opposed to a light source.
- 8. An illuminating optical system as claimed in claim 7, wherein said axially symmetric lens system is fixedly disposed on an optical axis, and said anamorphic lens system is movable between a position on said optical axis and a position retracted from said optical axis.
- 9. An illuminating optical system as claimed in claim 7 further including illumination control means for causing an illuminating optical system formed only of said axially symmetric lens system to illuminate the film in a first mode, and causing an illuminating optical formed only of said anamorphic lens system to illuminate the film in a second mode.
Priority Claims (4)
Number |
Date |
Country |
Kind |
1-125265 |
May 1989 |
JPX |
|
2-5779 |
Jan 1990 |
JPX |
|
2-5780 |
Jan 1990 |
JPX |
|
2-5781 |
Jan 1990 |
JPX |
|
Parent Case Info
This is a division of prior application Ser. No. 07/525,905, filed on May 18, 1990, now U.S. Pat. No. 5,191,474.
US Referenced Citations (5)
Divisions (1)
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Number |
Date |
Country |
Parent |
525905 |
May 1990 |
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