- Mitutoyo Mplan 5 and 10x lens. As you assessed, there should have been endcaps on both ends of your tube lens. Their effective focal lengths correspond to the design focal lengths of popular objectives (see the Magnification & FOV tab for details). * The parfocal distance of UIS2/UIS objective lens is 45 mm, and the focal length of the tube lens is 180 mm. Our objectives implement an innovative approach and plan-apochromat lenses that provide long working distance capabilities. What makes such huge price difference?Thanks. Get training tips on using different illumination techniques to help with all your microscopy applications. Hello, These two are the side effects with the most noticeable impact. There are multiple regimes in which a pulsed laser can damage an optic and this is based on the laser's pulse length. Objective lens: Infinity-corrected PLAN field achromatic 100X/0.8, /0, dry, spring. If needed, the objective magnification can be adjusted as shown in Example 3. Hello, thank you for contacting Thorlabs. Greatings from Germany The MU10B Series microscope delivers quality results and features infinity corrected optics that enhance the image quality and allows the objectives to remain parfocaled when optical components are added or removed. While it can work for some scanning applications (e.g. What is the aperature size of the ITL200 tube lens? We offer four tube lenses with non-standard focal lengths that can be used to change the magnification of an existing system. Please note that the magnification will change if an objective lens designed for a different tube lens EFL other than 200mm is used with the TL200-CLS2. I have the same question (and some more): is the ITL200 similar to the tube lenses found in Olympus or Nikon microscopes? Optical elements that produce magnification include objectives, camera tubes, and trinocular eyepieces, as shown in the drawing to the right. Product Description: The MU10B Series microscope is versatile and suitable for use in clinics, research laboratories, or multidisciplinary.. In these systems, the image distance is set to infinity, and a tube (or telan) lens is strategically placed within . These microscope systems have an image distance that is set to infinity. A good rule of thumb is that the damage threshold has a linear relationship with wavelength such that as you move to shorter wavelengths, the damage threshold decreases (i.e., a LIDT of 10 W/cm at 1310 nm scales to 5 W/cm at 655 nm): While this rule of thumb provides a general trend, it is not a quantitative analysis of LIDT vs wavelength. I assume the CAD is right, please confirm. Alternatively, external SM2 threads on the top of the adapter allow externally SM2-threaded lenses to be connected via an SM2M05 lens tube. This means that both CW and pulsed damage thresholds must be compared to the laser beam to determine whether the optic is suitable for your application. Infinite conjugate microscope: Also known as infinity corrected system or objective.. For Objectives it is usually the most top layer of the objective. (PDF 898KB). Thanks. For observation, a specimen is placed near the front focal plane of the objective, which gathers light transmitted through or reflected from the central portion of the specimen and produces a parallel bundle of rays projected along the optical axis of the microscope toward the tube lens. Great for Geology, Petrology, Mineralogy, Toxicology, Pharmaceutics, and Forensic Medicine! Our other tube lenses already have external SM2 (2.035"-40) threads. Response from Bweh at Thorlabs USA: The camera sensor should be about 148mm from the end of the ITL200 and the front of the ITL200 can be between 70-170mm from the end of the objective. Example 2: Trinocular MagnificationWhen imaging a sample through trinoculars, the image is magnified by the objective and the eyepieces in the trinoculars. Learn about them and their diverse uses in the optics, imaging, and photonics industries. This graph was obtained from [1]. The performance will be very similar to that of the tube lenses provided with these microscopes. For data presented here, a <1 mm beam size was used to measure the LIDT. Note that the guideline presented here assumes room temperature operation and optics in new condition (i.e., within scratch-dig spec, surface free of contamination, etc.). I am trying to select parts that I can model in Zemax and I appreciate that the design of your lenses is a trade secret, but the black box files do not convert into non-sequential models that I can use. We will discuss the possibility of offering this customization directly. Telecentric Pupil Distance is roughly the focal length when the lens is used in the reverse direction. Shop professional, high quality microscopes, microscope accessories, and magnifying lamps. The tube lens is designed for compatibility with the Nikon CFI60 objectives. Light rays exiting the infinity-focused objective lens are collimated, so that beamsplitters, polarizers, Wollaston or Nomarski prisms, vertical illuminators and other components requiring a parallel beam can be easily introduced into the optical pathway. Thank you for your feedback, an achromatic doublet lens with a shorter working distance could potentially be used such as the ones below. This is Section 9.2 of the Imaging Resource Guide. For long pulses to CW, linear power density becomes a constant with spot size. In an infinity-corrected optical system, the light beam transmitted from a specimen being observed, passes through the objective lens and does not form an image; instead it continues as an infinity parallel beam in the tube lens which then forms an intermediate image. I need the prescription of the ITL200 tube lens to incorporate it into our system. Jainco is renowned Exporter and Manufacturer of Infinity Corrected Binocular Microscope, Infinity Corrected Binocular Microscope Suppliers, Infinity Corrected Binocular Microscope Manufacturers throughout the world to be used in Schools, College and Universities [email protected] +0171-2642492; About; Certificates; 0. We will discuss the idea internally and it may be something you see offered as a standard product in the future. We also offer SM2-threaded adapters for common objective threads. Professional high quality microscopes, microscope accessories, and magnifying lamps. Because dust or other particles on the surface of an optic can cause damage at lower thresholds, we recommend keeping surfaces clean and free of debris. Thank you for contacting Thorlabs. If your maximum energy density is less than this adjusted LIDT maximum energy density, then the optic should be suitable for your application. Response from Tim at Thorlabs: Thank you for your feedback. Hi, I will reach out to you directly to discuss your application. This phenomenon is possibly introduced by the lateral chromatic aberration of our scan relay system because we observed that the FOV is better when using 900 nm than 800 nm. Microscope and Accessories Manufacturer and Wholesaler. Additionally, for highly transparent materials, there is little to no drop in the LIDT with increasing PRF. What is the optimal distance between ITL200 and a Nikon CFI60 objective? When imaging a sample with a camera, the dimensions of the sample area are determined by the dimensions of the camera sensor and the system magnification, as shown by Equation 2. The overall length Spec listed is 33.5mm, but the CAD and PDF shows 31.1mm. TE2000 or Eclipse Ti)? Cookie Settings Description. Contact Tech Support for more information. 20mm mount thread (in diameter) Spring loaded for protecting lens and slides. 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. For reference a Gaussian beam typically has a maximum energydensity that is twice that of the 1/e2 beam. Pulses shorter than 10-9 s cannot be compared to our specified LIDT values with much reliability. Thank you! While the working distance on one side of the lens is 148mm I was surprised to find that the pupil plane is ~290mm on the other side of the lens. One combination that could possible work for you depending on the thickness of your lens will be the SM2AD36 (http://www.thorlabs.com/thorproduct.cfm?partnumber=SM2AD36) in conjunction with the SM2A20 (http://www.thorlabs.com/thorproduct.cfm?partnumber=SM2A20). Thank you for contacting Thorlabs. Designed for high-resolution imaging, biomedical, machine vision, and laser scanning applications, these lenses can be aligned in pairs to create relays, combined with objectives to create different effective magnification ratios at a scientific camera, used as drop-in replacements for tube lenses in existing systems, or integrated into DIY Cerna Microscopes and other home-built microscopy setups to generate high-quality images. Long-Working-Distance Microscope Optics Mitutoyo infinity corrected microscope objective lenses have set the standard of excellence for long working distance microscope optics. Once the effective objective magnification is calculated, the magnification of the system can be calculated as before. If this is not the case, then the magnification of the system can still be calculated, but an effective objective magnification should be calculated first, as described below. Could you let me know the magnification of TTL200 in your product line? MTF . These companies offer objectives designed for use with the stated tube lens focal length. The graph to the right shows why expressing the LIDT as an energy density provides the best metric for short pulse sources. Specifications Response from Bweh E at Thorlabs. Beam diameter is also important to know when comparing damage thresholds. Unfortunately, we do not offer CodeV files for our parts. Response from Bweh at Thorlabs USA: Unfortunately Nikon doesn't provide this information. Unfortunately, this is highly dependent on factors such as absorption and thermal diffusivity, so there is no reliable method for determining when a high PRF laser will damage an optic due to thermal effects. Hello, the magnification is dependent on the objective lens paired with the TTL200 and is not entirely governed by the tube lens. Hence, when combining optical elements from different manufacturers, it is necessary to calculate aneffective magnification for the objective, which is then used to calculate the magnification of the system. Thanks. Could you clarify how this telecentric pupil distance is determined? Could you, please, comment why on your MTF graphs there is such a big difference in support range for TTL200MP vs TL200-2P2 / TL200-3P. Cookies Wavetrains of light leaving the infinity-focused objective are collimated, allowing beamsplitters, polarizers, Wollaston prisms, etc., to be introduced into the space between the objective and tube lens. Unlike the situation with fixed-tube optics, magnification of the intermediate image in infinity optical systems is calculated by the ratio of focal lengths between the tube lens and objective. ITL20020X21.6Zemax. In all of the imaging steps, with the exception of Image Plane (3'), the image is real and inverted. The lens will provide an unvignetted field up to this diameter so long as the lens is focused at the wavelength of interest, which may be anywhere from the lower end of the design wavelength range up to 2000nm. While double-checking that, I also noticed that theTTL100-A is 33.5 mm, not 31.1 mm as shown in the specs table as of this post (we must have accidentally swapped the dimension for the two at the time of listing these parts on the web). In order to use the calculator, macros must be enabled. Pearu. your webpage states: "Please note that using a standard tube lens in a scanning configuration will limit the unvignetted field size, since the tube lens must be placed at the telecentric pupil distance from the objective." I am considering using a TL200-CLS2 scan lens with the SL50-CLS2 tube lens for a Leica based confocal setup, using high NA Leica glycerol and oil objectives. The focal length of the MT-1 tube lens is 200mm and the entrance pupil diameter is 24mm. Thanks, There is a sentence for TL200-2P2 tube lens in your website. Careers |About Us. The longer the pulse duration, the more energy the optic can handle. For reference, a 22 mm field size is large enough to fill a4/3" format camera sensor. While the test results are only representative of one coating run, Thorlabs specifies damage threshold values that account for coating variances. Similarly, microscope objectives are designed to provide the magnification engraved on the housing when used with a tube lens of the appropriate standardfocal length. What is the reference layer? Besides, we dont have M38x0.5 retaining rings at this time. I am wondering if it possible to get this optic either uncoated, or coated with your 'B' anti-reflection coating for 650-1050 nm? This LIO-20x objective is suitable for use with standard low power visible laser wavelengths. Thanks! The Olympus objectives are typically intended to be used with a tube lens with a focal length of 180mm. Now compare the maximum energy density to that which is specified as the LIDT for the optic. Our standard widefield tube lenses for the visible wavelength range can also be used for laser scanning purposes when paired with the CLS-SL visible scan lens for example. I am especially interested about the TTL200-A and the TTL-200MP. Response from Shawn at Thorlabs China: It depends on your application. This allows us to track the use of our websites and social media, facilitate their functionality and optimize content. The SM38RR retaining ring can be used to lock the tube lens in place when using either adapter. The pulse length must now be compensated for. Hello, thank you for contacting Thorlabs. In your diagram, it implies an infinity corrected objective lens. Similarly, the TL200-2P2 and TL200-3P tube lenses are designed to be used with our SL50-2P2 (680 - 1300nm) and SL50-3P (900 - 1900nm) scan lenses, respectively. LIDT in linear power density vs. pulse length and spot size. The specifications to the right are measured data for Thorlabs' TTL200-UVB Tube Lens. Net weight: 4.9 oz (138 g) Description. These microscope systems have an image distance that is set to infinity. This threading can be converted to external SM2 (2.035"-40) threading using the SM2A20 adapter available below. Therefore, (4)L= (24mm11.2mm)200mm 11mm =232.7mm L = ( 24 mm 11.2 mm) 200 mm 11 mm = 232.7 mm In this ultra-short-pulse regime various mechanics, such as multiphoton-avalanche ionization, take over as the predominate damage mechanism [2]. Description and Specification of Infinity Corrected Binocular Microscope for Lab Tenders Infinity Corrected Binocular Microscope Manufacturers and Suppliers India Stage: 145mm x 140mm built-in double layer mechanical stage. . The damage analysis will be carried out on a similar optic (customer's optic will not be damaged). The adapter selection guide is a new feature and we are continuously improving this. It will probably be better to measure this with sun light instead. This is a brand new 40X (spring) Infinity Plan Achromatic microscope objective lens. Address Book, The lens tube should be the appropriate length, such that when used with the ITL200 lens and the SM2A20 adapter, the sensor of a camera mounted at the C-mount would be the correct focal distance away from the ITL200 lens. Buy 100X Infinity-Corrected (Plan PH P) Achromatic Positive Phase Contrast Microscope Objective Lens Working Distance 0.17mm at Boli Optics Microscope Store. I want to know where are the principal planes of the ITL200. In principle: Is the image plane for tube lenses supposed to coincide with the focal plane? Careers I could not find the relevant info. Hello Glenn, thank you for your feedback and bringing this to our attention! Microscope and Objective Optical CompatibilityMicroscope manufacturers design their systems withone of several standard tube lens focal lengths, including 200mm (typical for Thorlabs, Nikon, Leica, and Mitutoyo microscopes), 180mm (typical for Olympus microscopes), and165mm (typical for Zeiss microscopes). Careers Cookie Settings The determination of these distances is best done in the modeling software we use to design the lenses (Zemax). Glenn. If not, would it be possible you measure it? This is a brand new 100X dry (immersion oil free) infinity-corrected PLAN field microscope objective lens to meet the special need during the examination. The magnification of a system is the multiplicative product of the magnification of each optical element in the system. https://www.thorlabs.de/newgrouppage9.cfm?objectgroup_id=120 These objectives provide flexible observation at high magnifications and independent correction of chromatic aberration Long working distance provides clearance between the lens surface and the workpiece surface in focus for large or awkward workpieces The mounting screw threads of objectives are M26 x 36TPI and conform to JIS B-7141-1988 Note that Leica, Mitutoyo, Nikon, and Thorlabs use the same tube lens focal length; if combining elements from any of these manufacturers, no conversion is needed. Terms Of Use | According to the test, the damage threshold of the mirror was 2.00 J/cm2 (532 nm, 10 ns pulse, 10 Hz, 0.803 mm). Dr. Volker Lutter. My setup: We don't have information on the front focal length. A lens is considered telecentric when the focal length falls at the aperture stop of a system, and this places your entrance or exit pupil at infinity (for object or image space telecentricity respectively). Need Help? Is this tube lens compatible with any of the Nikon CFI60 series objectives? The TL200-CLS2 offers superior transmission in the operating range along with a significantly better axial color (focal length shift) performance. Predominate damage mechanism [ 2 ] Roger M. Wood, optics and laser Tech and! Are given by the microscope objective is infinitely far from the sample area calculation clicking this below! Vs. pulse length and spot size, it can work for your.! Either in the tube lens is 180 mm, therefore, i 'm getting results! Format camera sensor in infinity systems is accomplished either through the camera sensor the microscope objective is suitable your! Threading for direct compatibility with the focal lenght me know the properties of tube. 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