LED ILLUMINATION

• US 20150355448A1
• Filed: 01/14/2014
• Published: 12/10/2015
• Est. Priority Date: 01/15/2013
• Status: Active Grant

• Current Assignee: CoolLed Limited (Judges Scientific Plc)
• Original Assignee: CoolLed Limited (Judges Scientific Plc)
• Inventors: EDWARDS, Nicholas John, WHORISKEY, Gerard Patrick
• Granted Patent: US 9,720,219 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01N 2021/6463 Optics
• CPC Class Codes: G01N 21/6458 Fluorescence microscopy fluorescence microscopes per se G02B21/0076 and G02B21/16
• CPC Class Codes: G02B 21/06 Means for illuminating specimens
• CPC Class Codes: G02B 21/16 adapted for ultraviolet illumination ; Fluorescence microscopes G02B21/0076 takes precedence
• CPC Class Codes: G02B 27/141 using dichroic mirrors
• CPC Class Codes: G02B 27/30 Collimators

Abstract

The invention relates to an LED illumination device 1. Device 1 comprises at least two collimating optics 10,20,30,40 adapted to collimate light parallel to an illumination axis 2 through one or more dichroic mirrors 50,60,70, and at least two frames 12,22,32,42 each supporting at least two LED light sources, each frame being adapted to present one LED light source onto the focal axis 13,23,33,43 of one of said collimating optics.

Claims

1. An LED illumination device comprising:

a) at least two collimating optics adapted to collimate light parallel to an illumination axis through one or more dichroic mirrors, and

b) at least two frames each supporting at least two LED light sources, each frame being adapted to present one LED light source onto the focal axis of one of said collimating optics.

2. A LED illumination device according to claim 1, wherein one collimating optic is on the illumination axis, and the or each other collimating optic/s collimates light parallel to an illumination axis through one or more dichroic mirrors.

4. A LED illumination device according to claim 1, 2 or 3, wherein each frame supports four LED light sources.

5. A LED illumination device according to any preceding claim 1, wherein there are three dichroic mirrors.

6. A LED illumination device according to any preceding claim, wherein the plates move relative to the focal axis of one of said collimating optics, to present one LED light source to the focal axis.

8. A microscope incorporating a LED illumination device according to any preceding claim.

3. A LED illumination device according to claim for 2, wherein there are four collimating optics and four frames.

7. A LED illumination device substantially as hereinbefore described with reference to and as shown in the accompanying drawings.