Transmitted light/lighting device for microscopes

• US 6,674,575 B1
• Filed: 03/05/2002
• Issued: 01/06/2004
• Est. Priority Date: 04/27/1999
• Status: Expired due to Term

• Current Assignee: Carl Zeiss Microscopy GmbH (Carl-Zeiss-Stiftung)
• Original Assignee: CARL Zeiss JENA GmbH (Carl-Zeiss-Stiftung)
• Inventors: Tandler, Hans, Gonschor, Matthias, Gretscher, Peter
• Primary Examiner(s): NGUYEN, THONG Q
• Application Number:
  US10/009,912
• Time in Patent Office: 672 Days
• Field of Search: 359/368-390
• US Class Current: 359/389
• CPC Class Codes: G02B 21/06 Means for illuminating specimens
• CPC Class Codes: G02B 21/086 for transillumination only

Abstract

A transmitted-light illumination arrangement for microscopes has at least one LED which is arranged interchangeably in or in the vicinity of the plane of the aperture diaphragm of illumination optics or in front of Köhler illumination optics. The transmitted-light illumination arrangement advantageously has at least one LED light source radiating in the illumination direction of the microscope and at least one LED light source radiating in the opposite direction, wherein the light of the oppositely radiating light source is deflected in the illumination direction via deflecting mirrors, preferably a concave mirror, this light source being located in the focal point thereof.

Claims

1. A transmitted-light illumination arrangement for a microscope comprising:

an illumination optics having an aperture diaphragm and a field diaphragm;

a first receptacle disposed in the vicinity of the aperture diaphragm;

a second receptacle disposed in the vicinity of the field diaphragm; and

at least one LED which can be interchangeably positioned in the first receptacle to provide LED light through an aperture of the aperture diaphragm or the second receptacle to provide LED light through an aperture of the field diaphragm of the illumination optics.

2. The arrangement according to claim 1, wherein the at least one LED is arranged in a stand base in front of the field diaphragm of the illumination optics.

3. The arrangement according to claim 1, wherein an optical element for light scattering is arranged downstream of the at least one LED in the direction of light.

4. The arrangement according to claim 1, wherein the at least one LED with diffusion plate and/or illumination optics is arranged in an insert module.

5. A transmitted-light illumination arrangement for a microscope comprising:

an illumination optics having an aperture diaphragm positioned below a microscope stage and a field diaphragm positioned below the aperture diaphragm;

a first receptacle disposed in the vicinity of the aperture diaphragm;

a second receptacle disposed in the vicinity of the field diaphragm; and

a light emitting diode (LED) module having at least one LED, the LED module capable of being interchangeably received in either the first receptacle to provide LED light through an aperture of the aperture diaphragm or the second receptacle to provide the LED light through an aperture of the field diaphragm.

6. The arrangement according to claim 5, wherein the second receptacle is arranged in a stand base in front of the field diaphragm.

7. The arrangement according to claim 5, wherein the LED module includes a light diffuser positioned downstream of the at least one LED in the direction of light.