Quick Overview
Infinite. For Compound Microscope. Eye Tube Angle: 30°. Eye Tube Inner Diameter: Dia. 23.2mm. Eye Tube Diopter Adjustable: Left ±5°, Right Not Adjustable. 20/80 True-Trinocular. For BM1302 Series Microscope.
BM13021321 Compound 20/80 True-Trinocular Head
Compound Trinocular Head
| Eye Tube Optical System | Infinite |
| Eye Tube Type | For Compound Microscope |
| Eye Tube Adjustment Mode | Siedentopf |
| Eye Tube Angle | 30° |
| Erect/Inverted Image | Inverted Image |
| Eye Tube Rotatable | 360° Degree Rotatable |
| Interpupillary Adjustment | 48-75mm |
| Eye Tube Inner Diameter | Dia. 23.2mm |
| Eye Tube Diopter Adjustable | Left ±5°, Right Not Adjustable |
| Eye Tube Size for Scope Body/Carrier | Dia. 42.5x6mm |
| Image Port Switch Mode | 20/80 True-Trinocular |
| Surface Treatment | Spray Paint |
| Material | Metal |
| Color | White |
| Net Weight | 1.24kg (2.73lbs) |
| Applied Field | For BM1302 Series Microscope |
Technical Info
Instructions
Microscope Eyepiece TubeClose Λ
| Microscope eyepiece tube, is also called eyetube, or microscope observation tube. Microscope eyepiece tube, usually referred to the microscope eyepiece tube and the part of the connecting body, which, for some, is attached to the body, and for some others, separated from the microscope. When separated, a screwdriver or wrench is required in order to secure it to the microscope body. The eyepiece of the microscope is, sometimes, carried in the eyepiece tube, and fixed by screws, and for some, it is separated, to facilitate selecting and mounting eyepieces of different magnifications. When mounting, it needs to be mounted again upon the eyepiece tube. |
InfiniteClose Λ
| Microscopes and components have two types of optical path design structures. One type is finite optical structural design, in which light passing through the objective lens is directed at the intermediate image plane (located in the front focal plane of the eyepiece) and converges at that point. The finite structure is an integrated design, with a compact structure, and it is a kind of economical microscope. Another type is infinite optical structural design, in which the light between the tube lens after passing the objective lens becomes "parallel light". Within this distance, various kinds of optical components necessary such as beam splitters or optical filters call be added, and at the same time, this kind of design has better imaging results. As the design is modular, it is also called modular microscope. The modular structure facilitates the addition of different imaging and lighting accessories in the middle of the system as required. The main components of infinite and finite, especially objective lens, are usually not interchangeable for use, and even if they can be imaged, the image quality will also have some defects. The separative two-objective lens structure of the dual-light path of stereo microscope (SZ/FS microscope) is also known as Greenough. Parallel optical microscope uses a parallel structure (PZ microscope), which is different from the separative two-object lens structure, and because its objective lens is one and the same, it is therefore also known as the CMO common main objective. |
SiedentopfClose Λ
| For siedentopf eyetube, when changing the interpupillary distance, it requires two hands pushing or pulling the two eyetubes left and right simultaneously, and the two eyepiece tubes or eyetubes will change their position at the same time. |
Eye Tube AngleClose Λ
| Usually the Microscope Eyetube is 45°, some is 30°, Tiltable Eyetube Angle design of a microscope is also known as the ergonomics microscope. 0-30° or 0-45° is an ergonomic design. When the mechanical tube length / focal length of the tube of the microscope is relatively big, the microscope is relatively high, and the user's height or the seat of the work desk is not suitable, long-term use of microscope may cause sitting discomfort. Eyepiece tube with variable angle can freely adjust the angle without lowering the head. Especially when it is close to 0 degree and the human eye is close to horizontal viewing, long-time or long-term use can avoid fatigue damage to the cervical vertebra. |
Erect/Inverted ImageClose Λ
| After imaging through a set of objective lenses, the object observed and the image seen by the human eye is inverted. When the observed object is manipulated, move the specimen or object, the image will move in the opposite direction in the field of view. Most of the biological microscopes are reversed-phase designs. When needing to operate works with accurate direction, it is necessary to design it into a forward microscope. Generally stereo microscopes and metallurgical microscopes are all of erect image design. When observing through the camera and display, the erect and inverted image can be changed by the orientation of the camera. |
360° Degree RotatableClose Λ
| The eyepiece of the microscope can have different viewing or observing directions. When the position of the microscope is uncomfortable, the direction of the eyepiece tube of the microscope can be adjusted, to facilitate observation and operation. Placement method of different viewing angles of the microscope: General direction: the support column is behind the object to be observed Reverse direction: the support column is in front of the object to be observed Lateral direction: the support column is on the side of the object to be observed Rotating eyepiece tube, different microscopes may have different methods, for some, the direction is confirmed when installing the eyepiece tube of the microscope, for some, by rotating the body of the microscope, and for some, by rotating the support member on the support or holder of the microscope. |
Interpupillary AdjustmentClose Λ
| The distance between the two pupils of the human eye is different. When the image of exit pupil of the two eyepieces of the microscope are not aligned with the entry pupil of the eye, the two eyes will see different images, which can cause discomfort. Adjust the distance between the two eyepieces, to accommodate or adapt to the pupil distance of the observer's eyes. The adjustment range is generally between 55-75mm. |
Eye Tube Diopter AdjustableClose Λ
| For most people, their two eyes, the left and the right, have different vision; for the eyepiece tube, the eyepoint height of the eyepiece can be adjusted to compensate for the difference in vision between the two eyes, so that the imaging in the two eyes is clear and consistent. The range of adjustment of the eyepiece tube is generally diopter plus or minus 5 degrees, and the maximum differential value between the two eyepieces can reach 10 degrees. Monocular adjustable and binocular adjustable: some microscopes have one eyepiece tube adjustable, and some have two eyepiece tubes adjustable. First, adjust one eyepiece tube to the 0 degree position, adjust the microscope focusing knob, and find the clear image of this eyepiece (when the monocular adjustable is used, first adjust the focusing knob to make this eyepiece image clear), then adjust the image of another eyepiece tube (do not adjust the focusing knob again at this time), repeatedly adjust to find the clear position, then the two images are clear at the same time. For this particular user, do not adjust this device anymore in the future. As some microscopes do not have the vision adjustment mechanism for the eyepiece tube, the vision of the two eyes are adjusted through the eyepiece adjustable. |
Image Port Switch ModeClose Λ
| The third eyepiece splitting in the trinocular microscope is to borrow one of the two sets of eyepiece optical paths as the photographic light path. The beam split prism or beam splitter can reflect part of the image light to the eyepiece, and part passes through to the third eyepiece photographic light path, such a trinocular microscope is called trinocular simultaneous imaging microscope, or true-trinocular. The beam split prism or beam splitter of the trinocular simultaneous imaging microscope or true-trinocular often has different splitting modes, such as 20/80 and 50/50, etc. Usually, the former is the luminous flux ratio of the eyepiece optical path, and the latter is the luminous flux ratio of the photographic optical path. The advantage of true-trinocular is that, the real three optical paths can be imaged at the same time, and are not affected by the simultaneous use of the eyepiece observation and the photographic optical path (display). The disadvantage is that, because of the reason of the splitting, the image light of the photography is only a part. In theory, the image effect will be affected, and the effect is more obvious in the binocular eyepiece observation. If viewed closely, one will find that the eyepiece of the light path is relatively dark. However, in the current optical design and materials, the impact on the actual work is not very big, especially in the observation of low magnification objective lens, it has basically no effect at all, and therefore used by many people. |
PackagingClose Λ
| After unpacking, carefully inspect the various random accessories and parts in the package to avoid omissions. In order to save space and ensure safety of components, some components will be placed outside the inner packaging box, so be careful of their inspection. For special packaging, it is generally after opening the box, all packaging boxes, protective foam, plastic bags should be kept for a period of time. If there is a problem during the return period, you can return or exchange the original. After the return period (usually 10-30 days, according to the manufacturer’s Instruction of Terms of Service), these packaging boxes may be disposed of if there is no problem. |
| Packing | |
| Packaging Type | Carton Packaging |
| Packaging Material | Corrugated Carton |
| Packaging Dimensions(1) | 30.5x25.5x23cm (12.008x10.039x9.055″) |
| Inner Packing Material | Plastic Bag |
| Ancillary Packaging Materials | Styrofoam |
| Gross Weight | 1.47kg (3.25lbs) |
| Minimum Packaging Quantity | 1pc |
| Transportation Carton | Carton Packaging |
| Transportation Carton Material | Corrugated Carton |
| Transportation Carton Dimensions(1) | 30.5x25.5x23cm (12.008x10.039x9.055″) |
| Total Gross Weight of Transportation(kilogram) | 1.47 |
| Total Gross Weight of Transportation(pound) | 3.25 |
