Optical lens module

Abstract

An optical lens module including a foundation, at least one actuator, a lens base, an optical lens, at least one shaft, and at least one rocker arm is provided. The actuator is disposed in an accommodation space, defined inside the foundation, and fixed on the foundation. The lens base is disposed in the accommodation space and beside the actuator. The optical lens is disposed on the lens base. The shaft has a first end and a second end opposite to the first end. The first end is solidly connected to the lens base. The second end is connected to the foundation. The rocker arm has a third end and a fourth end opposite to the third end. The third end is solidly connected to a portion of the shaft between the first end and the second end. The fourth end is connected to the actuator.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of Taiwan application serial no. 96213489, filed on Aug. 15, 2007. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to an optical device module, more particularly to an optical lens module.[0004]2. Description of Related Art[0005]In recent years, various kinds of display apparatuses have been widely utilized in daily life. The display apparatuses are, for example, liquid crystal displays (LCDs), plasma display panels (PDPs), projection apparatuses, and so on. The projection apparatuses may be used to largely magnify an image frame with its projection lens, and has gradually become one of the mainstream large-size displays. Generally speaking, if the image frame projected by the projection apparatus is larger, the bord...

AI Technical Summary

Benefits of technology

[0008]Accordingly, the present invention provides an optical lens module, which has a small thickness and low cost, and an optical lens thereof has a high swing speed and large swing angle.

[0010]In the optical lens module, since the actuator is disposed beside, instead of below, the lens base, the optical lens module is thinner in thickness. Moreover, since the actuator drives the rocker arm to make the lens base swing, and since the length of the rocker arm is not restricted by the size of the lens base, the action moment arm of the actuator is longer, thus increasing the swing speed and the swing angle of the lens base.

Problems solved by technology

Generally speaking, if the image frame projected by the projection apparatus is larger, the border of each pixel area in the image frame will be more distinct and may be recognized, which results in an unnatural image frame and deteriorates the quality.

For example, when a word appears in the image frame as shown in FIG. 1A, the distinct border of each pixel area may make the letters with jagged contour, which is uncomfortable to look at.

Besides, the bearing in the reflective mirror module 100 easily fails due to abrasion, which may deteriorate the reliability of the reflective mirror module 100.

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