1. Technical Field
The present invention relates to an apparatus for coupling a first lens to a second lens.
2. Description of Related Art
Nowadays, lens modules have been widely used in various portable electronic devices. A typical apparatus for coupling a first lens to a second lens includes a plurality of recesses. A plurality of second lenses are placed into the recesses without any fixing means. Then a plurality of first lenses are coupled to the second lenses respectively to form a lens assembly. Because the second lenses are not fixed in the recesses, the second lenses may shake when the apparatus shakes. The shake of the second lenses may result in assembly error, which may deteriorate imaging quality of the lens assembly.
Therefore, a new apparatus for coupling a first lens to a second lens is desired to overcome the above mentioned problem.
Many aspects of the embodiments can be better understood with references to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
Embodiments will now be described in detail below with reference to the drawings.
Referring to
In operation, the clamping plate 1104 is moved towards the first plate 102 and, accordingly, the spring 1102 is compressed. A plurality of lenses 20 are placed into the recesses 106 in a one-to-one manner. Subsequently, the spring 1102 is released, the clamping plate 1104 is then driven by the spring 1102 to move towards the second plate 104 until the lenses 20 are firmly clamped between the clamping plate 1104 and the second plate 104. Next, a plurality of second lenses (not shown) is coupled to the first lenses 20 respectively.
In order to observe the relative position between the first lens 20 and the second lens, four alignment holes 108 are defined in the top surface 1002 around each recess 106. Generally, the first lens 20 and the second lens each include a cut-off portion, and the cut-off portion of the first lens 20 is labeled as 202. When the first lens 20 and the second lens are coupled to form a lens assembly, a first imaginary line perpendicularly connects an optical axis of the lens assembly and the cut-off portion 202 of the first lens 20, a second imaginary line perpendicularly connects the optical axis and the cut-off portion of the second lens. When an included angle between the first imaginary line and the second imaginary line is changed, optical performance of the lens assembly is changed. The four alignment holes 108 can help the operator of the apparatus 10 to recognize the included angle between the first and the second imaginary lines. The included angle represents the relative position between the first lens 20 and the second lens.
Referring to
Referring to
While certain embodiments have been described and exemplified above, various other embodiments from the foregoing disclosure will be apparent to those skilled in the art. The present invention is not limited to the particular embodiments described and exemplified but is capable of considerable variation and modification without departure from the scope of the appended claims.
Number | Date | Country | Kind |
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2008 1 0302297 | Jun 2008 | CN | national |
Number | Name | Date | Kind |
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7304812 | Lee et al. | Dec 2007 | B1 |
7349165 | Chien | Mar 2008 | B2 |
20040228012 | Sakamoto | Nov 2004 | A1 |
Number | Date | Country | |
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20090316280 A1 | Dec 2009 | US |