4x12mm SLR short focus macro telescope【K350】

**Hamlet Optical Series** **4x12mm SLR macro telescope【K350】** **Product Introduction** The short-focus macro telescope belongs to the Keplerian Telescope refractive optical system. It is an improvement on the Galileo telescope, changing the original concave lens eyepiece to a convex lens. It was originally used in astronomy and can be made into an astronomical telescope with a large field of view, high magnification but inverted imaging. Then a prism is added between the two convex lenses to convert the image into an upright one. In addition to the advantages of being light, thin, short and high-resolution, the two biggest features of short-focus macro telescopes are "Short Focus", which allows them to view the details of nearby objects at a very short distance; the optical system can also provide high refractive power, which is often used to assist patients with amblyopia and low vision to view distant objects. Suitable for low vision assistive devices, viewing classroom blackboards, bus numbers, street house numbers, weak eye vision training, museum exhibition tours, outdoor travel, flower and butterfly viewing, and insect observation. Hamlet's short-focus macro telescope has an internal mirror group processed with MC (Multi-Coated) multi-layer coating, which provides sharp images and good contrast. The series of products have a variety of magnifications for users with different needs to choose from. Some models can be equipped with a special double-lens base as a simple microscope for upright imaging. They are suitable for printing dot inspection, panel, circuit board inspection, quality control inspection, authenticity identification, biological observation, etc. The high-quality imaging, easy portability and diverse uses make it a favorite among people who have used it. **Product Features** **Multi-Coated** https://www.hwatang.com.tw/uploads/product/content/fdf62b720b77fc165e31c70cf76e055c.jpg Lens coating can reduce the loss of light caused by prism reflection, thereby increasing image brightness and contrast. "Multi-Coating" means that the internal lens group is coated with several layers of coating on the surface of the lens, and the imaging performance will be better than full-coating (Fully-Coated). **Reverse viewing increases field of view** A low-magnification telescope can be used as a "reversed telescope". During normal use, the image can be magnified by leaning the eye against the eyepiece. Reversing the telescope and viewing through the objective lens will reduce the image and distort the surrounding images, but it can increase the field of view, making it suitable for patients with visual field defects to perform fixed-point observation. **Fold-down eye mask** Users who do not wear glasses can use it directly, lightly against the eye sockets for the most comfortable observation; users who wear glasses need to fold down the eyecup to watch. **(Optional) Special magnifying lens base** https://www.hwatang.com.tw/uploads/product/content/387ffb767140beaa035ca6b133232870.jpg The optional KM-1LED magnifying lens base can be used as a simple microscope with upright imaging. When used with the telescope's focusing wheel, it can be used to observe flat objects and uneven objects. It is suitable for precision inspection of printed dots, fibers, jewelry minerals, circuit boards, etc. It can also be used as a high-power vertical magnifying glass. The KM-1LED base is 12 times when paired with K350, 16 times when paired with K351, and 24 times when paired with K352. https://www.hwatang.com.tw/uploads/product/content/b0df1a55d83217e894d0661877b6f761.jpg **How to use** https://www.hwatang.com.tw/uploads/product/content/03635af08c846121c1798459845e98e0.jpg 1. Remove the eyepiece cover and objective lens cover. The rubber part is the eyepiece. If you observe with the naked eye, you can use it directly. If you wear glasses, please fold down the rubber part of the eyepiece. 2. Put your eyes lightly on the eyepiece and look at the target object for observation. Hold the eyepiece head with one hand and turn the focusing wheel on the body with the other hand to focus. The image will change from blurry to clear. 3. When the camera is retracted to its shortest position, it is telephoto, with an infinite focal length; when it is rotated to its longest position, it is macro, allowing for close-up viewing. https://www.hwatang.com.tw/uploads/product/content/d7c609d17d44461b53b4e6cd4aa4bfd4.jpg **Precautions** ． The focal lengths stated in the specifications are actual test results, but may vary slightly due to individual vision conditions. ． Do not drop or subject it to strong impact to avoid displacement of the internal mirror assembly of the telescope. ． Do not look directly at the sun or strong light through the telescope, as this may cause damage to your eyesight. ． This product is not waterproof. Please avoid using it when it rains or soaking it in water. If it comes into contact with water, please wipe it dry as soon as possible and store it in a moisture-proof box. ． To ensure safety, please avoid viewing dangerous creatures such as bees, spiders, and poisonous snakes during macro observation. **Product Specifications** Original factory number: K350 Magnification: 4 times Objective lens diameter: 12mm Optical system: Keplerian Telescope Kepler Telescope Optical System Prism system: Roof vertical ridge prism system Lens material: optical white glass Lens coating: Multi-Coated Eye mask: Fold-down eye mask Field of view: 12.5 degrees Minimum focusing distance: 12.5cm (body extended to its longest position) Maximum focusing distance: Infinity (body retracted to shortest) Exit pupil diameter: 3mm Relative brightness: 9 Material: Aluminum Alloy Body size: diameter 30x length 61mm Weight: 62g Accessories: storage case, eyepiece cover, objective lens cover, neck lanyard, lens cleaning cloth Origin: Made in China **Brand Introduction** https://live.staticflickr.com/65535/53802868882_756aba87d7_n.jpg Since its establishment in 1984, Huatang Optical Industrial Co., Ltd. has been engaged in the manufacturing and import of various magnifying glasses, telescopes, compasses, optical microscopes and other products. It is the optical instrument company with the largest number of magnifying glasses in the country. We assist all walks of life to improve work efficiency, help many people with vision degeneration and eye diseases to see more clearly, and provide high-quality products to consumers at affordable prices. You don’t have to worry about spending a lot of money but not being able to buy suitable products. The year after the company was founded, we launched our own brand, "Hamlet Optics", to enter the international market. Our handheld magnifiers, portable leather magnifiers, and metal cloth magnifiers are the best tools that are sold both domestically and internationally and are well-known around the world. We continue to explore user needs and develop various innovative products, hoping that everyone can read comfortably and rediscover the joy of reading. Huatang Optics honestly provides product specifications and manufacturing origin information, so you don't have to worry about buying inferior products with greatly inflated magnifications, or products made in China being mixed with products made in Taiwan. https://www.hwatang.com.tw/uploads/editor/hwatang-company3-PL2.jpg?1497865948803