Electronic microscope filter

• US 8,619,359 B2
• Filed: 04/27/2011
• Issued: 12/31/2013
• Est. Priority Date: 04/27/2011
• Status: Expired due to Fees

• Current Assignee: Howard Letovsky
• Original Assignee: Howard Letovsky
• Inventors: Letovsky, Howard
• Primary Examiner(s): Chapel, Derek S
• Application Number:
  US13/095,151
• Publication Number:
  US 20120275019A1
• Time in Patent Office: 979 Days
• Field of Search: None
• US Class Current: 359/385
• CPC Class Codes: G01J 3/10 Arrangements of light sources specially adapted for spectrometry or colorimetry
• CPC Class Codes: G02B 21/06 Means for illuminating specimens
• CPC Class Codes: G02B 21/365 Control or image processing arrangements for digital or video microscopes G02B21/361, G02B21/362 take precedence
• CPC Class Codes: G02B 26/008 in the form of devices for effecting sequential colour changes, e.g. colour wheels

Abstract

The present invention discloses a unique and novel combination light source and active light filtering system for microscopes that eliminates the need for individual color filters, fluorescence filters, and many other filter types. The present invention provides variable light wavelength generating capabilities, and all of the benefits of most commercially available light sources in a compact package that can be mounted on a microscope or used at a distance from a microscope, but be coupled to it through a fiber optic cable or other light transmission means. Additionally, the present invention eliminates the need for a filter wheel turret in a microscope'"'"'s optical path, as well as eliminates the need for multiple fluorescent filter blocks in a fluorescent microscope optical path. The present invention can improve microscope filter systems to enable effective imaging of live cells without staining.

Claims

1. An active microscope light filtering system comprising:

at least one first light source capable of generating a range of visible or non-visible wavelengths of light, wherein said at least one first light source is configured to act as an excitation filter which produces only a wavelength of light necessary for the excitation of a fluorophore in a specimen of a microscope;

at least one dichroic mirror;

at least one second light source capable of generating a range of visible or non-visible wavelengths of light, wherein said at least one second light source is configured to act as a barrier filter to separate said fluorescense emanating from said fluorophore from other background light;

at least one carrier configured to contain said at least one first light source, said at least one second light source, and said at least one dichroic mirror;

at least one microprocessor;

said at least one microprocessor including at least one software component coded to output wavelengths of light and colors available within the limits of said at least one first light source and said at least one second light source;

at least one user interface coupled to said at least one microprocessor which allows a user to select any wavelengths of light for output by said at least one first light source and said at least one second light source.

2. The active microscope light filtering system according to claim 1 that incorporates at least one color mixing lens.

3. The active microscope light filtering system according to claim 1 that incorporates at least one lookup table to enable said software to automatically configure said at least one second light source as a barrier filter with respect to an excitation filter wavelength applied to said at least one first light source.

4. The active light filtering system according to claim 1 that incorporates at least one video display.