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| Body Optical System | Infinite |
| Body Magnification | 1X |
| Body Mounting Size for Stand | 54x27mm |
| Body Mount Type for Coupler | Fastening Screw |
| Body Mount Size for Coupler | Dia. 35mm |
| Body Mount Type for Infrared Laser | Dia. 10mm |
| Body Mount Type for Light | Dia. 7mm |
| Number of Holes on Nosepiece | Triple (3) Holes |
| Nosepiece Switch Mode | Manual |
| Nosepiece Screw Thread for Objective | M26x1/36 in. |
| Nosepiece Mounting Size for Microscope Body | Dia. 28mm |
| Coupler Magnification | 1X |
| For Camera Sensor Size | Under 1/2 in. |
| C/CS-Mount Coupler | C-Mount |
| Surface Treatment | Black Oxide Finish |
| Material | Metal |
| Color | Black |
| Net Weight | 1.52kg (3.35lbs) |
| 10X Infinity-Corrected Super-Long Working Distance Plan Apochromatic Objective | |
| Objective Optical System | Infinite |
| Objective Optical Magnification | 10X |
| Objective Type | Plan Apochromatic Objective |
| Objective Parfocal Distance | 95mm |
| Objective for Focal Length | 200mm |
| Objective Working Distance | 34mm |
| Numerical Aperture (N.A.) | N.A. 0.28 |
| Objective Cover Glass Thickness | /0 |
| Objective Immersion Media | Dry Objective |
| Objective Screw Thread | M26x1/36 in. |
| Objective Outer Diameter | Dia. 32.2mm |
| Surface Treatment | Polished Chrome |
| Material | Metal |
| Color | Silver |
| Net Weight | 0.23kg (0.51lbs) |
| Applied Field | For MT1802, MT0202, MS0201, LM1802 Series Microscope. Mitutoyo MF-U/HyperMF-U/FS70/VMU/WIDE VMU Microscope. Motic PSM-1000 Microscope |
| 20X Infinity Super-Long Working Distance Plan Apochromatic NIR Objective | |
| Objective Optical System | Infinite |
| Objective Optical Magnification | 20X |
| Objective Type | Plan Apochromatic Objective |
| Objective Parfocal Distance | 95mm |
| Objective Focal Length | 10mm |
| Objective for Focal Length | 200mm |
| Objective Working Distance | 30.8mm |
| Numerical Aperture (N.A.) | N.A. 0.29 |
| Objective Resolution | 1μm |
| Objective Wavelength | 400-1800nm |
| Objective Cover Glass Thickness | /0 |
| Objective Immersion Media | Dry Objective |
| Objective Screw Thread | M26x1/36 in. |
| Objective Outer Diameter | Dia. 32.2mm |
| NIR Transmittance | 770-790nm 80% or more |
| Diameter of Image Focal Plane | Dia. 24mm |
| Surface Treatment | Polished Chrome |
| Material | Metal |
| Color | Silver |
| Net Weight | 0.37kg (0.82lbs) |
| Applied Field | For LM1801 Series Microscope, Mitutoyo FS70 Microscope |
| 50X Infinity Super-Long Working Distance Plan Apochromatic NIR Objective | |
| Objective Optical System | Infinite |
| Objective Optical Magnification | 50X |
| Objective Type | Plan Apochromatic Objective |
| Objective Parfocal Distance | 95mm |
| Objective Focal Length | 4mm |
| Objective for Focal Length | 200mm |
| Objective Working Distance | 20.5mm |
| Numerical Aperture (N.A.) | N.A. 0.42 |
| Objective Resolution | 0.7μm |
| Objective Wavelength | 400-1800nm |
| Objective Cover Glass Thickness | /0 |
| Objective Immersion Media | Dry Objective |
| Objective Screw Thread | M26x1/36 in. |
| Objective Outer Diameter | Dia. 32.2mm |
| NIR Transmittance | 770-790nm 80% or more |
| Diameter of Image Focal Plane | Dia. 24mm |
| Surface Treatment | Polished Chrome |
| Material | Metal |
| Color | Silver |
| Net Weight | 0.45kg (0.99lbs) |
| Applied Field | For LM1801 Series Microscope, Mitutoyo FS70 Microscope |
Technical Info
| 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. |
| Coupler magnification refers to the line field magnification of the coupler/C-mount-adapter. With different magnifications of the adapter lens, images of different magnifications and fields of view can be obtained. The size of the image field of view is related to the sensor size and the coupler/C-mount-adapter magnification. Camera image field of view (mm) = sensor diagonal / coupler/C-mount-adapter magnification. For example: 1/2 inch sensor size, 0.5X coupler/C-mount-adapter coupler, field of view FOV (mm) = 8mm / 0.5 = 16mm. The field of view number of the microscope 10X eyepiece is usually designed to be 18, 20, 22, 23mm, less than 1 inch (25.4mm). Since most commonly used camera sensor sizes are 1/3 and 1/2 inches, this makes the image field of view on the display always smaller than the field of view of the eyepiece for observation, and the visual perception becomes inconsistent when simultaneously viewed on both the eyepiece and the display. If it is changed to a 0.5X coupler/C-mount-adapter, the microscope image magnification is reduced by 1/2 and the field of view is doubled, then the image captured by the camera will be close to the range observed in the eyepiece. Some adapters are designed without a lens, and their optical magnification is considered 1X. |
| For the size of the lens field of view of the coupler/C-mount-adapter, in the design process, the size of the camera sensor imaging target should be considered. When the field of view of the lens is smaller than the target plane of the camera, “black border” and “dark corner” will appear. The general microscope coupler/C-mount adapters are generally designed for the 1/2" camera targets. When a camera of 2/3 or larger target is used, the “dark corner” phenomenon will appear in the field of view. Especially, at present, DSLR cameras generally use large target plane design (1 inch full field of view), when used for microscopic photographing, the general DSLR camera coupler/C-mount adapter will have “black border”. Generally, the “dark corner” that appears on the field of view is often that the center of the microscope and the camera are not aligned. Adjust the position of the screw on the camera adapter, or turn the camera adapter to adjust or change the effect. |
| At present, the coupler/C-mount adapter generally adopts the C/CS-Mount adapter to match with the industrial camera. For details, please refer to "Camera Lens Mount". |
| The finite objective is the lateral magnification of the primary image formed by the objective at a prescribed distance. Infinite objective is the lateral magnification of the real image produced by the combination of the objective and the tube lens. Infinite objective magnification = tube lens focal length (mm) / objective focal length (mm) Lateral magnification of the image, that is, the ratio of the size of the image to the size of the object. The larger the magnification of the objective, the higher the resolution, the smaller the corresponding field of view, and the shorter the working distance. |
| In the case of polychromatic light imaging, the aberration caused by the light of different wavelengths becomes chromatic aberration. Achromatic aberration is to correct the axial chromatic aberration to the two line spectra (C line, F line); apochromatic aberration is to correct the three line spectra (C line, D line, F line). The objective is designed according to the achromaticity and the flatness of the field of view. It can be divided into the following categories. Achromatic objective: achromatic objective has corrected the chromatic aberration, spherical aberration, and comatic aberration. The chromatic portion of the achromatic objective has corrected only red and green, so when using achromatic objective, yellow-green filters are often used to reduce aberrations. The aberration of the achromatic objective in the center of the field of view is basically corrected, and as its structure is simple, the cost is low, it is commonly used in a microscope. Semi-plan achromatic objective: in addition to meeting the requirements of achromatic objective, the curvature of field and astigmatism of the objective should also be properly corrected. Plan achromatic objective: in addition to meeting the requirements of achromatic objectives, the curvature of field and astigmatism of the objective should also be well corrected. The plan objective provides a very good correction of the image plane curvature in the field of view of the objective, making the entire field of view smooth and easy to observe, especially in measurement it has achieved a more accurate effect. Plan semi-apochromatic objective: in addition to meeting the requirements of plan achromatic objective, it is necessary to well correct the secondary spectrum of the objective (the axial chromatic aberration of the C line and the F line). Plan apochromatic objective: in addition to meeting the requirements of plan achromatic objective, it is necessary to very well correct the tertiary spectrum of the objective (the axial chromatic aberration of the C line, the D line and the F line) and spherochromatic aberration. The apochromatic aberration has corrected the chromatic aberration in the range of red, green and purple (basically the entire visible light), and there is basically no limitation on the imaging effect of the light source. Generally, the apochromatic aberration is used in a high magnification objective. |
| Objective parfocal distance refers to the imaging distance between the objective shoulder and the uncovered object surface (referred to as the “object distance). It conforms to the microscope design, usually 45mm. The objective of different magnifications of the compound microscope has different lengths; when the distance between the objective shoulder and the object distance is the same, the focal length may not be adjusted when converting to objectives of different magnifications. |
| Objective for focal length is a design parameter of the tube focal length of the microscope that the objective is suitable for. |
| The objective working distance is the vertical distance from the foremost surface end of the objective of the microscope to the object surface to be observed. Generally, the greater the magnification, the higher the resolution of the objective, and the smaller the working distance, the smaller the field of view. Conversely, the smaller the magnification, the lower the resolution of the objective, and the greater the working distance, and greater the field of view. High-magnification objectives (such as 80X and 100X objectives) have a very short working distance. Be very careful when focusing for observation. Generally, it is after the objective is in position, the axial limit protection is locked, then the objective is moved away from the direction of the observed object. The relatively greater working distance leaves a relatively large space between the objective and the object to be observed. It is suitable for under microscope operation, and it is also easier to use more illumination methods. The defect is that it may reduce the numerical aperture of the objective, thereby reducing the resolution. |
| Numerical aperture, N.A. for short, is the product of the sinusoidal function value of the opening or solid angle of the beam reflected or refracted from the object into the mouth of the objective and the refractive index of the medium between the front lens of the objective and the object. Simply speaking, it is the magnitude of the luminous flux that can be brought in to the mouth of the objective adapter, the closer the objective to the specimen for observation, the greater the solid angle of the beam entering the mouth of the objective adapter, the greater the N.A. value, and the higher the resolution of the objective. When the mouth of the objective adapter is unchanged and the working distance between the objective and the specimen is constant, the refractive index of the medium will be of certain meaning. For example, the refractive index of air is 1, water is 1.33, and cedar oil is 1.515, therefore, when using an aqueous medium or cedar oil, a greater N.A. value can be obtained, thereby improving the resolution of the objective. Formula is： N.A. = refractive index of the medium X sin solid angle of the beam of the object entering the front lens frame of the objective/ 2 Numerical aperture of the objective. Usually, there is a calculation method for the magnification of the microscope. That is, the magnification of the microscope cannot exceed 1000X of the objective. For example, the numerical aperture of a 100X objective is 1.25, when using a 10X eyepiece, the total magnification is 1000X, far below 1.25 X 1000 = 1250X, then the image seen in the eyepiece is relatively clear; if a 20X eyepiece is used, the total magnification will reach 2000X, much higher than 1250X, then eventhoughthe image actually seen by the 20X eyepiece is relatively large, the effect will be relatively poor. |
| The thickness of the cover glass affects the parfocal distance of the objective. Usually, in the design of the focal length of the objective,the thickness of the cover glass should be considered, and the standard is 0.17mm. |
| The use of different media between the objective and the object to be observed is to change and improve the resolution. For example, the refractive index of air is 1, water is 1.33, and cedar oil is 1.515. Therefore, when using an aqueous medium or cedar oil, a greater N.A. value can be obtained, thereby increasing the resolution of the objective. Air medium is called dry objective, where oil is used as medium iscalled oil immersion objective, and water medium is called water immersion objective. However, because of the working distance of the objective, when the working distance of the objective is too long, the use of liquid medium will be relatively more difficult, and it is generally used only on high magnification objective having a shorter working distance, such as objectives of 60X, 80X and 100X. When using oil immersion objective, first add a drop of cedar oil (objective oil) on the cover glass, then adjust the focus (fine adjustment) knob, and carefully observe it from under the side of the objective of the microscope, until the oil immersion objective is immersed in the cedar oil and close to the cover glass of the specimen, then use the eyepiece to observe, and use the fine focus knob to lift the tube until the clear imageof the specimen is clearly seen. The cedar oil should be added in an appropriate amount. After the oil immersion objective is used, it is necessary to use a piece of lens wiping tissue to dip xylene to wipe off the cedar oil, and then wipe dry the lens thoroughly with a lens wiping tissue. |
| For microscopes of different manufacturers and different models, the thread size of their objectives may also be different. In general, the objective threads are available in two standard sizes, allowing similar objectives between different manufacturers to be used interchangeably. One is the British system: RMS type objective thread: 4/5in X 1/36in, One is metric: M25 X 0.75mm thread. |
| Objective resolution is the distance that can be distinguished between the two mass points on the object plane, or the number of pairs that can be distinguished within 1mm of the image place. Usually, its unit is expressed as the number of pairs/mm. In general, the greater the magnification, the higher the resolution. Under the same objective magnification, the greater the numerical aperture (N.A.) of the objective, the higher the resolution of the objective. Numerical aperture (N.A.) is the most important technical index reflecting the resolution of the objective. The objective is located at the forefront of the object being observed. When the objective magnifies and forms an image, the rear eyepieces and other equipment are to magnify again. When the eyepiece magnifies enough, one may only get a large enough but blurred image. Therefore, if the front-end objective cannot distinguish, neither can the rear device or equipment distinguish againmore information. The objective is the most important part of a microscope. |
| Objective wavelength is the permeability of the objective to light of the range of different wavelengths (Wavelength). The permeability of different wavelengths satisfies the different requirements of the objective tothe object to be observed, such as the commonly used infrared and ultraviolet wave bands. |
| NIR transmittance is the ratio of the transmitted radiant energy flux to the incident radiant energy flux of the light in the infrared band. The wavelength of infrared radiation is longer than that of red light, and its wavelength range is about 0.78-300 um (micron). |
| 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. |
| Video Microscope Optical Data Sheet | |||
| P/N | Objective | Coupler | |
| LM18021212 (1X) | LM18021211 (1X) | ||
| Magnification | Magnification | ||
| MT18023341 | 10X | 10X | 10X |
| IR18091141 | 20X | 20X | 20X |
| IR18091161 | 50X | 50X | 50X |
| 1. Magnification=Objective Optical Magnification * Body Magnification * Coupler Magnification | |||
| Camera Image Sensor Specifications | |||
| No. | Camera Image Sensor Size | Camera image Sensor Diagonal | |
| （mm） | （inch） | ||
| 1 | 1/4 in. | 4mm | 0.157" |
| 2 | 1/3 in. | 6mm | 0.236" |
| 3 | 1/2.8 in. | 6.592mm | 0.260" |
| 4 | 1/2.86 in. | 6.592mm | 0.260" |
| 5 | 1/2.7 in. | 6.718mm | 0.264" |
| 6 | 1/2.5 in. | 7.182mm | 0.283" |
| 7 | 1/2.3 in. | 7.7mm | 0.303" |
| 8 | 1/2.33 in. | 7.7mm | 0.303" |
| 9 | 1/2 in. | 8mm | 0.315" |
| 10 | 1/1.9 in. | 8.933mm | 0.352" |
| 11 | 1/1.8 in. | 8.933mm | 0.352" |
| 12 | 1/1.7 in. | 9.5mm | 0.374" |
| 13 | 2/3 in. | 11mm | 0.433" |
| 14 | 1/1.2 in. | 12.778mm | 0.503" |
| 15 | 1 in. | 16mm | 0.629" |
| 16 | 1/1.1 in. | 17.475mm | 0.688" |
| Digital Magnification Data Sheet | ||
| Image Sensor Size | Image Sensor Diagonal size | Monitor |
| Screen Size (24in) | ||
| Digital Zoom Function | ||
| 1/3 in. | 6mm | 101.6 |
| 1. Digital Zoom Function= (Screen Size * 25.4) / Image Sensor Diagonal size | ||
| Microscope Optical and Digital Magnifications Data Sheet | ||||||||||
| Objective | Coupler | Camera | Monitor | Video Microscope Optical Magnifications | Digital Zoom Function | Total Magnification | Field of View (mm) | |||
| PN | Magnification | PN | Magnification | Image Sensor Size | Image Sensor Diagonal size | Screen Size | ||||
| MT18023341 | 10X | LM18021212 | 1X | 1/3 in. | 6mm | 24in | 10X | 101.6 | 1016X | 0.6mm |
| MT18023341 | 10X | LM18021211 | 1X | 1/3 in. | 6mm | 24in | 10X | 101.6 | 1016X | 0.6mm |
| IR18091141 | 20X | LM18021212 | 1X | 1/3 in. | 6mm | 24in | 20X | 101.6 | 2032X | 0.3mm |
| IR18091141 | 20X | LM18021211 | 1X | 1/3 in. | 6mm | 24in | 20X | 101.6 | 2032X | 0.3mm |
| IR18091161 | 50X | LM18021212 | 1X | 1/3 in. | 6mm | 24in | 50X | 101.6 | 5080X | 0.12mm |
| IR18091161 | 50X | LM18021211 | 1X | 1/3 in. | 6mm | 24in | 50X | 101.6 | 5080X | 0.12mm |
| 1. Video Microscope Optical Magnifications=Objective Optical Magnification * Body Magnification * Coupler Magnification | ||||||||||
| 2. Digital Zoom Function= (Screen Size * 25.4) / Image Sensor Diagonal size | ||||||||||
| 3. Total Magnification= Video Microscope Optical Magnifications * (Screen Size * 25.4) / Image Sensor Diagonal size | ||||||||||
| 4. Field of View (mm)= Image Sensor Diagonal size / Video Microscope Optical Magnifications | ||||||||||
| Contains | ||||||||||||||||
| Parts Including | ||||||||||||||||
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| Packing | |
| Packaging Type | Carton Packaging |
| Packaging Material | Corrugated Carton |
| Packaging Dimensions(1) | 28x27.5x15cm (11.023x10.827x5.906″) |
| Packaging Dimensions(2) | 15.2x15.2x15.2cm (6x6x6″) |
| Inner Packing Material | Plastic Bag |
| Ancillary Packaging Materials | Expanded Polystyrene |
| Gross Weight | 2.80kg (6.17lbs) |
| Minimum Packaging Quantity | 1pc |
| Transportation Carton | Carton Packaging |
| Transportation Carton Material | Corrugated Carton |
| Transportation Carton Dimensions(1) | 28x27.5x15cm (11.023x10.827x5.906″) |
| Transportation Carton Dimensions(2) | 15.2x15.2x15.2cm (6x6x6″) |
| Total Gross Weight of Transportation(kilogram) | 2.80 |
| Total Gross Weight of Transportation(pound) | 6.17 |
| Quantity of One Transportation Carton | 1pc |
