-
E-mail
1415268707@qq.com
-
Phone
13764885152
-
Address
Room 4597, Building 6, No. 1150 Lanfeng Road, Fengxian District, Shanghai
Shanghai Jintong Instrument Co., Ltd
Olympus microscope imaging principle and image optimization techniques
Date: 2025-07-14Read: 0
Olympus microscopes play a crucial role in various fields such as scientific research and healthcare. Their imaging principles are based on optical knowledge, and practical techniques can optimize image effects, helping us observe the microscopic world more clearly.
1、 Imaging principle
whenOlympus microscopeThe light source emits light, which passes through the condenser and illuminates the sample. If the sample absorbs light, some of the light will bypass or pass through the sample without interference, which is called direct light or non deviated light. The background light (often referred to as ambient light) around the sample also belongs to this category. At the same time, when some light passes through the sample, it will deviate from different structures of the sample and produce diffracted light.
Direct light and diffracted light meet at the intermediate image plane of the eyepiece aperture. Due to the half wavelength (180 degrees) phase difference caused by the sample, diffraction light and direct light undergo destructive interference. Afterwards, the eyepiece lens of the eyepiece further magnifies the image and ultimately projects it onto the retina or camera film. Simply put, direct light is uniformly distributed throughout the image plane, while diffracted light is focused on different parts of the image plane. Destructive interference leads to a decrease in light intensity, forming bright and dark areas. These light and dark patterns constitute the sample image we see. Because the human eye is sensitive to changes in brightness, this image roughly reproduces the appearance of the original sample.
2、 Image optimization techniques
1. Adjust the lighting
Ensuring that the sample obtains sufficient and appropriate wavelength excitation light is particularly important for fluorescence microscopy. Choosing an excitation filter that can pass through the selected wavelength and block bad wavelengths, combined with high-energy light sources such as mercury lamps and xenon lamps, can meet the optimal excitation conditions. At the same time, select appropriate blocking filters to prevent unnecessary wavelengths from entering the observation tube, allowing the fluorescence emission of the sample to pass smoothly and improve image brightness.
2. Reasonably choose the objective lens
Objective lenses are crucial in fluorescence microscopes, as they must be able to effectively transmit near ultraviolet and visible light. The numerical aperture (NA) determines the angle of the receiving cone. In a transmission fluorescence microscope, the light intensity reaching the eye or other detectors is proportional to the square of the numerical aperture of the objective lens and condenser, and inversely proportional to the square of the total magnification factor; In a reflected light fluorescence microscope, the image intensity is proportional to the fourth power of the numerical aperture of the objective lens and inversely proportional to the square of the total magnification factor. So, high numerical aperture objective lenses can produce higher intensity images.
3. Apply image processing techniques
For example, deconvolution techniques can improve image contrast and clarity. It reconstructs an ideal image composed of a smaller set of point sources by utilizing the point spread function of the optical system, eliminating or reversing the image blurring problem caused by diffraction limits. The inverse filter algorithm and restricted iteration algorithm in commercial software can be selected and used according to different needs to improve image quality.
masterOlympus microscopeThe imaging principle and image optimization techniques enable us to better utilize this precision instrument and uncover the mysteries of the microscopic world.