Shenzhen GuanyidaTianyi Optical Production Corporation, Ltd

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2019

11-25

The changes of our company

Our company name has been changed from Shenzhen Guanyida Optical Production corporation.,Ltd to Shenzhen Guanyidatianyi Optical Production corporation.,Ltd on June 04th 2019.And its representative has

2019

11-25

Nourishment for the eye

Eyes are subject to daily stress – hours spent working in front of a screen, dry heat or cold draughts put a severe strain on them. Age, too, does not pass by without leaving its mark. To maintain eye

2019

11-25

There are two ways to use a magnifying glass:

One is to place the object to be observed in a fixed position, then move the magnifying glass to the side of the object, and then slowly move the magnifying glass along the direction of the line betwe

2019

10-25

What should I pay attention to when using a magnifying glass?

1. Be careful not to collide with hard objects such as steel to prevent the magnifying glass from being broken; 2, do not under the strong light against your skin to prevent burns or fire caused by flammable items. First, the magnifying glass profile: Magnifying glass (Magnifying glass) is a convex lens used to magnify an object, the prototype of a microscope. Usually used to observe object details. A magnifying lens is a converging lens with a focal length that is much smaller than the apparent distance of the eye. The larger the angle of view, the larger the image, the more you can distinguish the details. Moving closer to the object increases the viewing angle but is limited by the ability of the eye to focus. Use a magnifying glass to hold it close to your eye and place it inside its focus to create a imaginary virtual image. The role of the magnifying glass is to enlarge the angle of view. Historically, the application of the magnifying glass was said to have been proposed by a 13th-century British bishop, Grosst. Second, the use of: 1, the use of handheld magnifying glass 1. Place the magnifying glass on the reading first, then slowly increase it until the reading content is the clearest and the surrounding image is not deformed. 2. Keep the proper distance between the magnifying glass and the reading and move them closer or further together to select the most satisfactory field of view. 3. The most difficult thing to read is that the mirror holder is unstable and causes visual fatigue. You can place the mirror holder on the reading object or place the mirror arm on the table. 4. Many low vision people like to put their eyes on the magnifying glass when reading, in order to get the maximum magnification and the maximum field of view. 5. Adjust the position of the light source to avoid the shadow of the body and the magnifying glass from obscuring on the reading object, to avoid reflection and spotlight on the reading object. 6, built-in light source handheld magnifier generally uses a small battery, battery capacity is limited, so they are designed with a flexible switch, easy to use. 2. How to use the glasses magnifying glass: 1. Move the reading object closer or farther and adjust to the focus of the reading lens to make the object image clearest. 2. If people with block or dot-like vision cannot read properly, use a finger or a black ruler to help guide. 3. People with low vision who have serious visual field defects can use the reading ripper to enhance contrast and reduce glare. 4. When reading, it is best to choose a light source with adjustable illuminance and variable projection angle to avoid direct light from the human eye. 5, to avoid the shadow of the head and body to block the reading, but also to avoid specular reflection of light. 3, the use of vertical magnifying glass: 1. The vertical magnifying glass should be placed on the table tilted toward the reader. The reader will feel more convenient, labor-saving and more comfortable, and will not feel tired even if reading for a long time. 2. Vertical mirrors with different magnifications have different fields of view. The distance between the reading object and the lens is also different. Users should choose the vertical mirror that suits their own vision and willingness. 3. Try to change the distance between the eyes and the magnifying glass surface and choose the most satisfactory field of view. 4. When using a vertical magnifier without a built-in light source, you need to select the direction, angle and brightness of the light source to avoid shadows and reflected light to get enough light. 5, some people wear suitable glasses and then use the vertical mirror or desktop mirror is better, more convenient to use.

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Time of issue:2020-04-15 00:00:00

Phone: +86-755-77832118 33832119
Fax: +86-755-84890415
Mobile: +86-13825367786
E-mail: lan@ganida.net     huan@ganida.net

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Address : Unit B Yinkeli Industrial Park , Shabeili,Longdong,Longgang Street,Longgang District,Shenzhen,China

Phone: +86-755-77832118 33832119
Fax: +86-755-84890415
Mobile: +86-13825367786
E-mail: lan@ganida.net
Address : Unit B Yinkeli Industrial Park , Shabeili,Longdong,Longgang Street,Longgang District,Shenzhen,China

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