Knowledge Q&A
Over 30 years experience of making magnifiers and fresnel lenses, we also have some useful knowledge to share with the public.
It's our pleasure to help people find a suitable magnifier so that their vision will be clear and bright.
When you put something under it, the lens bends the light rays that hit it. This bending makes the object appear larger than it really is.
Read moreFresnel lenses are portable and lightweight sheets used for light gathering or magnifying. The frensel lens was first invented by a French physicist namely Augustin-Jean Fresnel. Augustin Fresnel first...
Read moreWhen one thinks of a magnifying glass, they tend to think of the big classic type lens. However, in actual use, you want a lightweight, and powerful magnifier that has impeccable optics and is simple to use....
Read moreDiopter refers to the curvature of the lens. As the diopter increases, the lens become thicker and the curvature greater. As the curvature increases, light rays are redirected to fill a greater portion...
Read moreAn aspheric lens is an ideal magnifier from several points of view. When used at its conjugates, there is no distortion of the image (a rectangular grid remains a rectangular grid after magnification)....
Read moreThe lens of the eye is equivalent to a convex lens. It also works according to the theory of the actual image is inverted and minimized when object distance is greater than 2 times of the focal length....
Read moreA magnifying glass (called a hand lens in laboratory contexts) is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle (see image)....
Read moreUsually. It won't get the magnification effort when touching a page. Because a magnifier with convex lens needs some distance between object and lens as focal length. In order to achieve maximum magnification...
Read morePeople usually assume magnifying glasses only help seniors physically, but rarely aware magnifying glasses can help psychologically. We would like to share paragraphs excerpted from “99 years old, no matter...
Read moreUsually, Fresnel lens is cut into spherical surface shape in order to minimize the optical aberration of the image during imaging. The lens can better align an ideal point light source into a parallel...
Read moreThe Fresnel lens has been used in many ways of our daily consumption. You can find it in the camera;s focusing screen, LED spotlight, ATM machines, buses, trucks, solar panel cells, magnfiers, traffic...
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