Claims
- 1. An image transmitting optical system for reimaging an image of an object comprising:
- two bar-shaped lens components each comprising no more than two
- wherein each of said two bar-shaped lens components is a cemented lens component consisting of a plurality of lens elements; and
- said transmitting optical system satisfying the following conditions (1) and (3):
- 0. 35>D.sub.1 /l>0.1 (1)
- D.sub.1 >D.sub.3 ( 3)
- wherein said reference symbol D.sub.1 represents a distance as measured from said image of said object to one of a plurality of refracting surfaces of said two bar-shaped lens components which is located closest to said image of said object, said reference symbol D.sub.3 designates a distance as measured from a pupil of said image transmitting optical system to a lens surface having a positive power located closest to said pupil, and said reference symbol l designates a length equal to 1/2 of a relay length, said relay length being a distance as measured from said object to an image reimaged by said image transmitting optical system.
- 2. An image transmitting optical system for reimaging an image of an object comprising:
- two bar-shaped lens components each comprising no more than two lens elements;
- said image transmitting optical system satisfying the following conditions (2), (4) and (6):
- D.sub.3 /l<0.3 (2)
- 0.35>D.sub.1 /l>0.125 (4)
- D.sub.1 =D.sub.3 ( 6)
- wherein said reference symbol D.sub.1 represents a distance as measured from said image of said object to one of a plurality of refracting surfaces of said two bar-shaped lens components which is located closest to said image of said object, said reference symbol D.sub.3 represents a distance as measured from the pupil of said image transmitting optical system to a lens surface having a positive power located closest to said pupil and said reference symbol l designates a length equal to 1/2 of a relay length, said relay length being a distance as measured from said image of said object to an image reimaged by said image transmitting optical.
- 3. An image transmitting optical system for reimaging an image of an object comprising:
- two-bar shaped lens components each comprising no more than two lens elements; and
- said image transmitting optical system satisfying the following conditions (1), (3) and (5):
- 0.35.gtoreq.D.sub.1 /l>0.1 (1)
- D.sub.1 >D.sub.3 ( 3)
- 0.2.gtoreq.D.sub.3 /l.gtoreq.0 (5)
- wherein said reference symbol D.sub.1 represents a distance as measured from said image of said object to one of a plurality of refracting surfaces of said two bar-shaped lens components which is located closest to said image of said object, said reference symbol D.sub.3 designates a distance as measured from a pupil of said image transmitting optical system to a lens surface having a positive power located closest to said pupil, and said reference symbol l designates a length equal to 1/2 of a relay length, said relay length being a distance as measured from said image of said object to an image reimaged by said image transmitting optical system.
- 4. An image transmitting optical system for reimaging an image of an object consisting of:
- two bar-shaped lens components each comprising no more than two elements;
- each of said two bar-shaped components is a cemented lens component consisting of a plurality of lens elements;
- said image transmitting optical system satisfying the following condition (4):
- 0.35>D.sub.1 /l.gtoreq.0.125 (4)
- wherein said reference symbol D.sub.1 represents a distance as measured from said image of said object to one of a plurality of refracting surfaces of said two bar-shaped lens components which is located closest to said image of said object, and said reference symbol l designates a length equal to 1/2 of
- a relay length, said relay length being a distance as measured from said image of said object to an image reimaged by said image transmitting optical system.
- 5. An image transmitting optical system according to claim 1, 2, 3 or 4, said image transmitting optical system further satisfying the following condition:
- 0.9.gtoreq..kappa..gtoreq.0.5(.kappa.=x/r)
- wherein said reference symbol x represents a height of said image reimaged by said image transmitting optical system and said reference symbol r designates an effective radius of each of said bar-shaped lens components.
- 6. An image transmitting optical system according to claim 1, 2 or 4, said image transmitting optical system further satisfying the following condition (2):
- D.sub.3 /l.ltoreq.0.3 (2)
- wherein said reference symbol D.sub.3 represents a distance as measured from the pupil of said image transmitting optical system to a lens surface having a positive power located closest to said pupil.
- 7. An image transmitting optical system according to claim 1, 2, 3, or 4, wherein each of said two bar-shaped lens components comprises:
- a bar-shaped element, and
- a lens element cemented to a pupil side surface of said bar-shaped lens element,
- either of said bar-shaped lens element and said lens elements has a refractive index and an Abbe's number which are higher and smaller, respectively, than those of the other of said bar-shaped lens element and said lens element.
- 8. An image transmitting optical system according to claim 1, 2, 3 or 4, wherein:
- each of said two bar-shaped lens components comprises at least one aspherical surface.
- 9. An imaging transmitting optical system according to claim 1 or 3, wherein each of said two bar-shaped lens components comprise:
- at least two bar-shaped lens elements each having a thickness larger than twice an outside diameter thereof.
- 10. An image transmitting optical system according to claim 1 or 4, wherein said image transmitting optical system further satisfies the following condition (3'):
- 0.7D.sub.1 >D.sub.3. (3')
- 11.
- 11. An image transmitting optical system according to claim 1, wherein:
- said optical system further satisfies the following condition (3):
- D.sub.1 >D.sub.3 ( 3)
- wherein said reference symbol D.sub.3 designates a distance as measured from a pupil of said image transmitting optical system to a lens surface of said image transmitting optical system having a refractive power and being located closest to said pupil; and
- a vignetting factor on a marginal portion of said image transmitting optical system is at least 70%.
- 12. An image transmitting optical system according to claim 2 or 4, wherein each of said two bar-shaped lens components each consist of:
- a first bar-shaped lens element; and
- a second bar-shaped lens element, and
- at least one cemented surface having a negative refractive power.
- 13. An image transmitting optical system according to claim 2 or 4, wherein each of said two bar-shaped lens components include:
- a cemented surface having a negative refractive power.
- 14. An image transmitting optical system according to claim 4, wherein said image transmitting optical system further satisfies the following condition (3):
- D.sub.1 >D.sub.3 ( 3)
- wherein said reference symbol D.sub.3 designates a distance as measured from a pupil of said image transmitting optical system to one of a plurality of lens surfaces of said image transmitting optical system which has a refractive power and which is located closest to said pupil.
- 15. An image transmitting optical system for reimaging an image of an object comprising:
- two bar-shaped lens components each comprising no more than two lens elements;
- said transmitting optical system satisfying the following conditions:
- 0.35.gtoreq.D.sub.1 /l>0.1 (1)
- D.sub.3 /l<0.3 (2)
- D.sub.1 >D.sub.3 ( 3)
- wherein said reference symbol D.sub.1 represents a distance as measured from said image of said object to one of a plurality of refracting surfaces of said two bar-shaped lens components which is located closest to said image of said object, said reference symbol D.sub.3 designates a distance as measured from a pupil of said image transmitting optional system to a lens surface having a positive power located closest to said pupil, and said reference symbol l designates a length equal to 1/2 of a relay length, said relay length being a distance as measured from said image of said object to an image reimaged by said image transmitting optical system.
- 16. An image transmitting optical system for reimaging an image of an object consisting of:
- two bar-shaped lens components each comprising no more than two elements;
- each of said two bar-shaped lens components is a cemented lens component consisting of a plurality of lens elements;
- said image transmitting optical system satisfying the following conditions:
- 0.35>D.sub.1 /l>0.1 (1)
- D.sub.1 >D.sub.3 ( 3)
- wherein said reference symbol D.sub.1 represents a distance as measured from said image of said object to one of a plurality of refracting surfaces of said two bar-shaped lens components which is located closest to said image of said object, said reference symbol D.sub.3 designates a distance as measured from a pupil of said image transmitting optical system to a lens surface located closest to said pupil, and said reference symbol l designates a length equal to 1/2 of a relay length, said relay length being a distance as measured from said object to an image reimaged by said image transmitting optical system.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3-014930 |
Jan 1991 |
JPX |
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Parent Case Info
This is a continuation-in-part of application Ser. No. 07/820,923, filed on Jan. 15, 1992 now abandoned.
US Referenced Citations (11)
Foreign Referenced Citations (5)
Number |
Date |
Country |
3709021 |
Sep 1988 |
DEX |
49-5993 |
Feb 1974 |
JPX |
22-72513 |
Nov 1990 |
JPX |
22-72512 |
Nov 1990 |
JPX |
4-93909 |
Mar 1992 |
JPX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
820923 |
Jan 1992 |
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