7-17x30mm zoom large-aperture monocular short-focus telescope【K355】

**Hamlet Optical Series** **7-17x30mm zoom large-aperture monocular short-focus telescope【K355】** **product description** The short-focus macro telescope belongs to the refraction optical system of the Keplerian Telescope. The Galileo telescope is modified from the original concave lens eyepiece to a convex lens. It was originally used in astronomy and can be made into a large field of view, high magnification but upside down. Astronomical telescope for imaging. Afterwards, a dimple was added between the two convex lenses to convert it to an upright image. Short-focus macro telescopes have the advantages of lightness, thinness, shortness, and high resolution. The two biggest features are "Short Focus", which can view details of close objects at a short distance; the optical system can also provide high diopter. It is often used to assist amblyopia, low-vision (Low-Vision) patients to see distant objects. It is suitable for low vision aids, blackboards for viewing classes, bus numbers, street numbers, low vision training, museum exhibition tours, outdoor tourism, flower viewing, butterfly viewing, and insect observation. Hamlet Mllet’s zoom short-focus telescope [K355], which can perform zoom continuous stepless zoom, provides 7 times to 17 times real magnification, first use low magnification to find the target, and then adjust to high magnification to view details, objective lens aperture Up to 30mm, bright field of vision. The internal lens group is processed by MC (Multi-Coated) multilayer coating, which has sharp imaging and good contrast. Coarse and micro two-stage focusing mechanism, you can use coarse focus to quickly adjust the focus to rough imaging, and then use fine focus to adjust to fine imaging. **feature of product** **Zoom optical zoom** https://www.hwatang.com.tw/uploads/product/content/f60ca351d184e387e6a83876d11504ec.jpg This product can adjust the zoom magnification, stepless continuous zooming. The magnification range is 7 times to 17 times. When using high magnification for a long time, it is recommended to use it with a tripod to reduce shaking. **30mm large aperture objective lens** It can make more light enter, especially when the light is dim, it can maintain the brightness of the field of view. **Multi-Coated multilayer coating** https://www.hwatang.com.tw/uploads/product/content/fdf62b720b77fc165e31c70cf76e055c.jpg The lens coating can reduce the loss caused by the reflection of light on the prism, so as to increase the brightness and contrast of the image. "Multi-Coated multi-layer coating" refers to coating the inner lens group with several layers of coating on the surface of the lens, and the imaging performance will be better than that of the full-coated coating (Fully-Coated). **Swing-out eye mask** https://www.hwatang.com.tw/uploads/product/content/585e38d5ae90063f58c2dfd97793b19b.jpg Users who are not wearing glasses can unscrew the eye shield and lean on the eye socket for the most comfortable observation. **Tripod hole design** https://www.hwatang.com.tw/uploads/product/content/4508cc126f184f1d05cce18e2a593f37.jpg The bottom of the fuselage is equipped with a standard 1/4" tripod hole, which can be equipped with various tripods according to requirements, suitable for long-term observation, photographing and recording, and users who pursue stability. **How to use** https://www.hwatang.com.tw/uploads/product/content/03635af08c846121c1798459845e98e0.jpg 1. Remove the eyepiece cap and objective lens cap. The rubber part is the eyepiece, if you are observing with the naked eye, you can use it directly; if you wear glasses, please fold down the rubber at the eyepiece. 2. Keep your eyes lightly on the eyepiece and look at the target object. Hold the eyepiece with one hand and turn the focus wheel of the body with the other hand to adjust the focus. The image will change from blurry to clear. 3. When the body is reduced to the shortest distance, it is telephoto, and the focal length is infinity; when the body is turned to the longest distance, it is macro, which can be viewed at close range. https://www.hwatang.com.tw/uploads/product/content/4f276efcbf5696c6b5ebbd71361ccf1f.jpg **Precautions** . The focal length stated in the specifications is the actual test result, but it may be slightly different due to different personal vision conditions. . Please do not drop it or subject it to strong impact to avoid the deviation of the internal mirror group of the telescope. . Do not use the telescope to directly watch the sun or strong light, which may cause damage to your eyes. . This product has no waterproof function. Please avoid using it when it rains or soaking in water. If it encounters water, please dry it as soon as possible and store it in a moisture-proof box. . To ensure safe use, please avoid watching dangerous creatures such as bees, spiders, and venomous snakes during macro observation. **Product specifications** Original Number: K355 Magnification: 7 times to 17 times Objective lens diameter: 30mm Optical system: Keplerian Telescope Keplerian Telescope optical system 稜鏡 system: Roof vertical roof ridge system Lens material: optical white glass Lens coating: Multi-Coated multilayer coating Eye mask: screw-out eye mask View angle: 4.6 degrees @ 7 times; 2.6 degrees @ 17 times Closest focusing distance: 2.5m (the body extends to the longest) The farthest focusing distance: infinity (the body shrinks to the shortest) Ejection pupil diameter: 4.28mm~1.76mm Relative brightness: 18.3~3.09 Body material: plastic Tripod hole: Yes, 1/4" Body size: length 128-170x diameter 46mm Weight: 160g Accessories: waist storage cover, eyepiece cover, objective lens cover, hand lanyard, lens cleaning cloth Place of Origin: Entrusted to produce in Mainland China **brand introduction** https://www.hwatang.com.tw/uploads/editor/hwatang-logo-M2.jpg?1498211963935 Since its establishment in 1984, Huatang Optical Industry Co., Ltd. has been manufacturing and acting as an agent for importing various magnifiers, binoculars, compasses, optical microscopes and other products. It is an optical instrument company with the most magnifying glass items in China. Various industries improve work efficiency, help many people with degraded vision and eye diseases see more clearly, and provide consumers with high-quality products at affordable prices. You no longer need 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 and entered the international market with the "Hamlet Optics" Mllet optical series. In particular, handheld magnifiers, portable holster magnifiers, and metal cloth mirrors are sold at home and abroad and are well-known in the world. Good weapon. We continue to explore user needs and develop various innovative products, hoping that everyone can see comfortably and regain the joy of reading. Huatang Optics honestly provides product specifications and manufacturing origin information, so that you don't have to worry about buying inferior products with large magnification, or mixing products made in Taiwan with mainland products. https://www.hwatang.com.tw/uploads/editor/hwatang-company3-PL2.jpg?1497865948803