Varifocus lens device

A zoom lens and mirror chamber technology, which can be applied to projection devices, printing devices, installations, etc., can solve the problems of tilting of the lens, affecting the image quality, and uneven force of the spring 92, so as to reduce the size of the mechanism, ensure the image quality, expand and contract smooth effect
CN1936642AInactive Publication Date: 2007-03-28ASIA OPTICAL CO INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ASIA OPTICAL CO INC
Publication Date
2007-03-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a focal variation lens device including the bearing seat, the rotated focusing ring connected to the bearing seat, the lens room located in the focusing ring, the elastic gasket and the cover. The matched displacement guide rail and the sliding part are set between the focusing ring and the bearing seat. The sliding part can move along with the displacement guide rail to drive the focusing ring move comparing to the bearing seat. At the same time, lens room can move with the focusing ring and generates the axis displacement relative to the bearing seat. The cover is matched to the bearing seat and the elastic gasket is clapped between the cover and the focusing ring. The lens of the invention has the small size and is easy to operate, so the lens has the good imaging quality.
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Description

【Technical field】

[0001] The invention relates to a zoom lens device, in particular to a zoom lens device which is suitable for a mobile phone and a digital camera capable of taking pictures in a normal state and capable of taking close-up shots. 【Background technique】

[0002] With the development of multimedia technology, while people are pursuing thinner and smaller personal digital consumer products, they also put forward more requirements for their practical functions. Taking mobile phones as an example, the simple call function can no longer meet people's needs. More and more mobile phone manufacturers have begun to study new mobile phones that integrate digital camera camera functions, that is, adding lenses and corresponding circuit control systems inside the mobile phone, so as to realize mobile phones. The function of taking pictures. Early mobile phones with camera functions were all equipped with fixed-focus lenses, and their shooting range, especially close-up ...

Claims

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