Optical mechanism for precisely controlling the angle of an incident light beam within a large incident angle range

A dielectric penetrating/optical path overlapping type incident angle changeable optical mechanism, which allows an incident light beam to penetrate an observing dielectric having a specific thickness and then incident onto a measured range of a sample within a large incident angle range, comprising:

• a reflecting prism which reflects the incident light beam to generate a reflected light beam having an angle of 90° with respect to the incident light beam;
• a quasi-concave parabolic cylindric mirror used to make the reflected light beam coming from the reflecting prism penetrate the observing dielectric and then incident onto/reflected by a measured range of a detect-waiting sample to thereby generate a detect-waiting light beam;
• a quasi-concave cylindric mirror used to change the traveling direction of the detect-waiting light beam so as to make the detect-waiting light beam incident onto/reflected by the reflecting prism to thereby overlap with the incident light beam;
• and
• a light beam splitting means used to separate the detect-waiting light beam from the incident light beam.

An optical path overlapping type incident angle changeable optical mechanism, which allows an incident light beam to be incident onto a measured range of a sample within a large incident angle range, comprising:

• a reflecting prism reflecting the incident light beam to generate a reflected light beam having an angle of 90° with respect to the incident light beam;
• a concave parabolic mirror guiding the reflected light beam coming from the reflecting prism to a measured range of a detect-waiting sample to thereby be further reflected to generate a detect-waiting light beam;
• a concave spherical mirror used to make the detect-waiting light beam incident onto/reflected by the reflecting prism so as to overlap with the incident light beam;
• and
• a light beam splitting means used to separate the detect-waiting light beam from the incident light beam.

A dielectric penetrating/optical path overlapping type incident angle changeable optical mechanism, which allows an incident light beam to penetrate an observing dielectric having a specific thickness and to then incident onto a measured range of a sample within a large incident angle range, comprising:

• a reflecting prism reflecting the incident light beam to generate a reflected light beam having an angle of 90° with respect to the incident light beam;
• a quasi-concave parabolic mirror used to make the reflected light beam coming from the reflecting prism penetrate the observing dielectric and then incident onto/reflected by a measured range of a detect-waiting sample to thereby generate a detect-waiting light beam;
• a quasi-concave spherical mirror used to change the traveling direction of the detect-waiting light beam so as to make the detect-waiting light beam incident onto the reflecting prism to thereby overlap with the incident light beam;
• a light beam splitting means used to separate the detect-waiting light beam from the incident light beam.

A dielectric penetrating/optical path splitting incident angle changeable optical mechanism, which allows an incident light beam to penetrate an observing dielectric having a specific thickness and then incident onto a measured range of a sample within a large incident angle range comprising:

• a reflecting prism reflecting the incident light beam to generate a reflected light beam having an angle of 90° with respect to the incident light beam;
• a first quasi-concave parabolic mirror used to make the reflected light beam coming from the reflecting prism penetrate the observing dielectric and then incident onto/reflected by a measured range of a detect-waiting sample to generate a detect-waiting light beam;
• and
• a second quasi-concave parabolic mirror used to change the traveling direction of the detect-waiting light beam so as to make the detect-waiting light beam reflected by the reflecting prism and then parallel to the incident light beam.