Claims
- 1. A confocal microscope which uses a confocal disk, comprising:
a light source; a high-NA and low-magnification objective lens which forms an image of said confocal disk obtained by irradiation with a light from the light source on a sample; a first image formation lens system disposed between said confocal disk and said objective lens; first image formation lens driving means for moving said first image formation lens system in a light axis direction and adjusting a focal point position of said objective lens with respect to said sample; and a second image formation lens system which forms a sectioning image formed on said confocal disk into an image in photoelectric conversion means.
- 2. The confocal microscope according to claim 1, wherein a magnification of said objective lens is a low magnification of about 10 times.
- 3. The confocal microscope according to claim 1, wherein a magnification of said objective lens is a low magnification of 0.5 time to 5 times.
- 4. The confocal microscope according to claim 1, wherein said second image forming optical system includes a variable magnification optical system which forms a sectioning image on said confocal disk with respect to said photoelectric conversion means with a varied image forming magnification.
- 5. The confocal microscope according to claim 4, wherein said variable magnification optical system comprises a zoom lens which can vary the magnification to a high magnification from a low magnification.
- 6. The confocal microscope according to claim 4, wherein said variable magnification optical system is constituted of a turret in which a plurality of lenses different in magnification are replaceable.
- 7. The confocal microscope according to claim 1, wherein said first image forming optical system and said objective lens are in a telecentric arrangement.
- 8. The confocal microscope according to claim 1, wherein said second image formation lens system has a telecentric arrangement with respect to said confocal disk and opposite sides of said photoelectric conversion means.
- 9. The confocal microscope according to claim 1, wherein said first image formation lens driving means moves a focal point of said first image formation lens system in a light axis direction by a driving command from a computer, and the computer takes in the sectioning image on said confocal disk in each movement position by said photoelectric conversion means and obtains three-dimensional information.
- 10. A height measurement method in a confocal microscope which uses a confocal disk,
said microscope comprising: a light source; a high-NA and low-magnification objective lens which forms an irradiation light from the light source into an image on a sample through said confocal disk; a first image formation lens system disposed between said confocal disk and said high-NA and low-magnification objective lens; first image formation lens driving means for moving said first image formation lens system in a light axis direction and adjusting a focal point position of said objective lens with respect to said sample; and a second image formation lens system which forms a sectioning image formed on said confocal disk into an image in a CCD camera, said measurement method comprising: moving said first image formation lens system in a light axis direction by said first image formation lens driving means; obtaining an IZ peak position from luminance information of pixels of sectioning images in a plurality of positions, formed by said CCD camera; and obtaining height information of said sample.
- 11. The height measurement method according to claim 10, wherein said second image formation lens system further includes light spot gradation means for enlarging a light spot formed into the image by said CCD camera such that the light spot extends over a plurality of pixels of the CCD camera disposed adjacent to one another, and
said method further comprises: obtaining the IZ peak position from integrated luminance value information of light intensities received by the plurality of pixels which receive the light spots enlarged by the gradation means.
- 12. The height measurement method according to claim 10, wherein said gradation means comprises a diffusion plate or a diffraction lattice which changes a size of the light spot without changing an optical magnification, and can be disposed to be attachable/detachable with respect to said second image formation lens.
Priority Claims (3)
Number |
Date |
Country |
Kind |
2000-275085 |
Sep 2000 |
JP |
|
2000-275089 |
Sep 2000 |
JP |
|
2000-275090 |
Sep 2000 |
JP |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This is a Continuation Application of PCT Application No. PCT/JP01/07868, filed Sep. 11, 2001, which was not published under PCT Article 21(2) in English.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/JP01/07868 |
Sep 2001 |
US |
Child |
10146836 |
May 2002 |
US |