Company Profile
Jiangxi Phenix Optical Technology Co., Ltd. Is the first listed company in the Chinese optical industry (SSE code: 600071), which is Successfully listed on the Shanghai Stock Exchange in 1997. It covers an area of about 333,000㎡ and employees about 3300 people.
We offer exclusive services you can't find with other companies. We have developed a unique service system designed to assist you in building your own Microscopes And of course our team members are always standing by to help you, Chat, Phone, or Email.
Why Choose Us
Professional Team
We offer exclusive services you can't find with other companies. We have developed a unique service system designed to assist you in building your own Microscopes And of course our team members are always standing by to help you, Chat, Phone, or Email.
Factory
Jiangxi Phenix Optical Technology Co., Ltd. Is the first listed company in the Chinese optical industry (SSE code: 600071), which is Successfully listed on the Shanghai Stock Exchange in 1997. It covers an area of about 333,000㎡ and employees about 3300 people.
Our Certificate
We always feel that all success of our company is directly related to the quality of the products we offer. They meet the highest quality requirements as stipulated in ISO9001, ISO14001, ISO45001 and SGS authentication and our stringent quality control system.
Production Equipment
We have a huge production workshop and production equipment, under the premise of ensuring quality can quickly complete the order production.
Microscope eyepieces are the lenses that you look through, near where you place your eye. The optical tube is what part of the microscope that holds the eyepiece. A compound microscope has one or more eyepieces that can be changed or swapped to other eyepieces, if they are compatible with the same tube diameter.
Its main function is to magnify the real image magnified by the objective lens again, thereby forming a clear virtual image at a clear viewing distance; therefore, its quality will ultimately affect the quality of the object image. In photomicrography, a real image is formed on the ground glass. In addition to magnifying, some eyepieces (such as compensating eyepieces) can also correct residual aberrations generated during the imaging process of the objective lens. The construction of eyepieces is much simpler than objective lenses. Because the light beam passing through the eyepiece is nearly parallel, spherical aberration and longitudinal (axial) chromatic aberration are not serious. Only horizontal chromatic aberration (amplified chromatic aberration) is considered when designing.
Benefits of Microscope Eyepiece
Easy to operate
The optical microscope has a relatively simple structure and is easy to use, suitable for teaching, primary research and routine testing.
Safe and non-destructive
The requirements for samples are relatively loose and will not be damaged by high-energy electron beams. It is suitable for observing living cells and tissue samples (especially under special techniques such as phase contrast and fluorescence).
Higher resolution
Although limited by the wavelength of light, it can still provide sufficient resolution to observe many details in the microscopic world, such as microorganisms, cell structures and certain fine particles.
Rich lighting and staining methods
A variety of light sources and staining techniques can be used to make sample features more distinct, which is helpful for morphological and functional research.
Type of Microscope Eyepiece
Micrometer eyepiece
A graduated glass piece is added to the eyepiece for quantitative measurement, or for measuring the length of microindentation. The scale can be designed on straight lines, cross lines, square grids, concentric circles or other geometric figures according to the purpose of measurement.
Photographic eyepiece
This eyepiece is specially used for photography or close-range projection, and cannot be used for microscopic observation or magnification alone. Its aberration correction is basically the same as that of the compensation eyepiece, and it should be used with a plan apochromatic objective lens or a semi-apochromatic objective lens to achieve a sufficiently flat image at the specified magnification.
Wide-angle eyepiece
Generally, the field of view angle of the eyepiece is about 30°. Wide-angle eyepieces refer to flat-field eyepieces with a field of view of more than 50° and a magnification of more than 12.5 times, and flat-field eyepieces with a field of view of more than 40° and a magnification of less than 10 times.
The eyepiece is a visual optical device used to observe the image formed by the front optical system. It is a component of visual optical instruments such as telescopes and microscopes. Its main function is to magnify the real image magnified by the objective lens again. In order to eliminate aberrations, the eyepiece is usually composed of several lenses, with a larger field of view and angle of view magnification.
The eyepiece is also the main component of the microscope. Its main function is to magnify the real image magnified by the objective lens again, thereby forming a clear virtual image at a clear viewing distance; therefore, its quality will ultimately affect the quality of the object image. In photomicrography, a real image is formed on the ground glass. In addition to magnifying, some eyepieces (such as compensating eyepieces) can also correct residual aberrations generated during the imaging process of the objective lens. The construction of eyepieces is much simpler than objective lenses.
An objective lens is a lens group composed of several lenses. The purpose of combined use is to overcome the imaging defects of a single lens and improve the optical quality of the objective lens. The magnifying effect of a microscope mainly depends on the objective lens. The quality of the objective lens directly affects the quality of the microscope image. It is the main component that determines the resolution and image clarity of the microscope, so the correction of the objective lens is very important.
The structure of the objective lens is complex and precision-made. It is usually composed of a lens group. Each lens is separated by a certain distance from each other to reduce the phase difference. Each set of lenses is made of one or several lenses of different materials and parameters glued together.
How to Choose the Right Eyepiece
Measure counting line
Eyepieces can be used to make measurements by adding a small disc-shaped glass reticle (sometimes called a counting line or reticle) at the field diaphragm plane of the eyepiece. Crosshairs usually have markings (such as a measurement scale or grid) engraved on the surface. Because the crosshair is in the same plane as the field diaphragm, it appears as a sharp focus superimposed on the sample image.
Moving wire micrometer
For highly accurate measurements, a moving wire micrometer can be used. This micrometer replaces the traditional eyepiece and offers some improvements over the traditional reticle. One turn of the thumbscrew equals the distance between two adjacent crosshair marks. By slowly moving the crosshair from one position to another on the specimen image and recording the change in the number of thumbscrews, the microscope can measure distances more accurately. For each objective that will be used, the moving wire micrometer must be calibrated using the stage micrometer.
Movable pointer
Some eyepieces have a movable pointer located within the eyepiece and positioned so that it appears as an outline in the image plane. The pointer is helpful in indicating certain features of a specimen, especially when the microscope user is teaching students about specific features. Most eyepiece pointers can rotate 360° around the specimen, and more advanced eyepiece pointers can translate across the field of view.
Photoelectric eyepieces and projection lenses
Manufacturers often produce specialized eyepieces, often called photoelectric eyepieces, intended for use in photomicrography. These eyepieces are usually negative type and cannot be used for visual viewing. Therefore, it is often called a projection lens.
Projection lens
The projection lens must be carefully corrected to produce a flat field image, which is absolutely necessary for accurate photomicrography. They are also often color corrected to help ensure true color reproduction in color photomicrography. Microphotographic projection lenses have magnification factors ranging from 1x to about 5x. These lenses can be interchanged to adjust the size of the final image in photomicrography.
Focusing telescopic eyepiece
Camera systems have become an integral part of microscopes, with most manufacturers offering microphotography accessory cameras as optional accessories. These advanced camera systems often feature motorized black boxes that store and automatically feed the film, frame by frame, as the photomicrographs are taken.
Keeping the optical components clean is very important to ensure good optical performance. When the microscope is not in use, the microscope should be covered with the dust cover provided with the instrument. If there is dust and dirt on the optical surface and instrument, use a blower to blow off the dust or use a soft brush to remove the dirt before wiping the surface.
Optical surfaces should be cleaned with lint-free cotton cloth, lens tissue, or cotton swabs moistened with special lens cleaning fluid. Avoid using too much solvent. Lens cleaning paper or cotton swabs should be properly moistened with solvent, but do not use too much solvent to penetrate into the objective lens, resulting in a decrease in the clarity of the objective lens and damage to the objective lens.
The surface lenses of the eyepieces and objective lenses in a microscope are most susceptible to dust, dirt and oil. When you find that contrast, clarity is reduced, or fogging occurs, you need to use a magnifying glass to carefully check the condition of the eyepieces and the lens in front of the objective lens.
Low-magnification objectives have a fairly large front lens, which can be wiped with a cotton cloth or cotton swab wrapped around your finger and lens cleaning paper moistened with ethanol. 40X and 100X need to be carefully inspected with a magnifying glass. In order to achieve high flatness in high-power lenses, a front lens with a concave surface with a small radius of curvature is used. When wiping this lens, use a toothpick or cotton swab with a cotton ball to clean it. Be gentle when wiping the lens surface. Do not use excessive force or scratching motions, and make sure the cotton swab touches the concave surface of the lens.
Don’t Know the Difference Between Objective Lens and Eyepiece
Appearance difference
From a positional point of view, the difference between the objective lens and the eyepiece is that the eyepiece is located above the lens barrel, similar to an "eye". The objective lens is located below the lens barrel and is the lens closest to the sample being measured.
The similarity between objective lenses and eyepieces is that they are both convex lenses, which magnify objects. However, in terms of magnification, the objective lens will be larger, which is also one of the differences between the objective lens and the eyepiece.
These are the physical distinctions between objective lenses and eyepieces in a microscope. Of course, we can also reasonably distinguish which is the eyepiece and which is the objective based on visual perception and usage experience.
Industry application differences
With a century-old history, Olympus has always been committed to developing high-quality objectives for advanced applications in the industrial field. It has a variety of high-quality objectives that can choose near-infrared wavelengths, long working distances, immersion, etc., to meet a variety of industrial inspections. need.
Among them, oil immersion and water immersion objectives can achieve Olympus' highest quality color correction and resolution, are suitable for coverslip and non-coverslip samples, and can be used in a wide range of applications.
It has to be said that this type of objective lens is very safe for detecting samples, and is also very suitable for detecting samples with irregular shapes and fragile structures.
We will find that the objective lens and eyepiece of the microscope are very important microscopic parts. Only by understanding the difference between the objective lens and the eyepiece can we use them better. Therefore, it must not be ignored when choosing. We must choose the most suitable objective lens and eyepiece to help us do a better job in inspection.
Jiangxi Phenix Optical Technology Co., Ltd. Is the first listed company in the Chinese optical industry (SSE code: 600071), which is Successfully listed on the Shanghai Stock Exchange in 1997. It covers an area of about 333,000㎡ and employees about 3300 people.
Our Certificate
We always feel that all success of our company is directly related to the quality of the products we offer. They meet the highest quality requirements as stipulated in ISO9001, ISO14001, ISO45001 and SGS authentication and our stringent quality control system.
FAQ
We're professional microscope eyepiece manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale microscope eyepiece for sale here from our factory. For price consultation, contact us.