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Composite lens

一种复合透镜、透镜的技术，应用在透镜、光学、仪器等方向，能够解决未充分填充树脂、不能树脂标记使用等问题，达到对位容易、精密生产率的效果

Inactive Publication Date: 2009-09-02
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if Figure 5 As shown in (a), since the ring-shaped recess formed near the outer edge 58a of the molding surface is located at an upper position in the molding die 53, the resin may not be sufficiently filled.
If the filling of the resin is insufficient, the resin mark cannot be formed into the desired shape, and there is a problem that it cannot be used as a resin mark

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0033] figure 1 (a) and figure 1 (b) shows a cross-sectional view of the compound lens in this embodiment. figure 1 (b) is figure 1 Enlarged view of part IB in (a). Such as figure 1 As shown in (a), the compound lens includes: a base lens 2 and a resin lens 1 on the base lens 2 . Such as figure 1 As shown in (b), the resin lens 1 has a first surface 11, a second surface 12 adjacent to the first surface 11, and a second surface adjacent to the second surface in order from the optical axis A toward the outer periphery in the region outside the optical effective diameter B. 12 adjacent to the third surface 13 . The first surface 11 has an inclined surface that becomes higher toward the optical axis A from the outer periphery, and the inclined surface is connected to the second surface. In addition, the second surface 12 is a surface substantially perpendicular to the optical axis A, and such a vertical surface is connected to the first surface. On the other hand, th...

no. 2 Embodiment approach

[0044] figure 1 (c) and figure 1 (d) shows the cross-sectional view of the compound lens in this embodiment. figure 1 (d) is figure 1 Enlarged view of part ID in (c). Such as figure 1 As shown in (c), the composite lens includes: a base lens 2 and a resin lens 1 on the base lens 2 . Such as figure 1 As shown in (d), in the region outside the optical effective diameter B, the resin lens 1 has, in order from the optical axis A toward the outer periphery: a first surface 11, a second surface 12 adjacent to the first surface 11, and a second surface 12 adjacent to the second surface. 12 adjacent to the third surface 13 . The first surface 11 has an inclined surface that becomes higher toward the optical axis A from the outer periphery, and this inclined surface is connected to the second surface. Furthermore, the second surface 12 has a surface 12 a substantially perpendicular to the optical axis A, and the surface 12 a is connected to the first surface 11 . On the o...

no. 3 Embodiment approach

[0047] Image 6 (a) and Image 6 (b) shows a cross-sectional view of the compound lens in this embodiment. Image 6 (b) is Image 6 Enlarged view of VIB in (a). Such as Image 6 As shown in (a), the compound lens includes: a base lens 2 and a resin lens 1 on the base lens 2 . Such as Image 6 As shown in (b), the resin lens 1 has, in a region outside the optical effective diameter B, a surface 12b substantially perpendicular to the optical axis A, and a flange 14 protruding in the direction of the optical axis A connected to the outer periphery of the surface 12b. The connection portion E between the surface 12b and the flange 14 has a radius of curvature of 0.03 mm or less. Thus, the junction E of the face 12b and the flange 14 forms a sharp edge. In addition, a base material mark 9 that is an annular concave portion or an annular convex portion is provided on an outer edge (corner) portion 21 of the base lens 2 . In addition, since the manufactured compound lens also...

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Abstract

The invention provides a composite lens which makes contraposition between a moulded film and a base lens easy and has high yield when a resin lens if formed. The composite lens of the present invention has a base lens and a resin lens placed on the base lens. The resin lens has, in an area outside an optically effective diameter, a first surface, a second surface that is adjacent to the first surface, and a third surface that is adjacent to the second surface in sequence from an optical axis to an outer circumference. The first surface has an inclined surface that becomes higher from the outer circumference toward the optical axis, and the inclined surface is connected to the second surface. The second surface has a plane that is substantially perpendicular to the optical axis, and the substantially perpendicular plane is connected to the first plane. The third surface has an inclined surface that becomes lower from an inner circumference toward the outer circumference.

Description

technical field [0001] The present invention relates to a compound lens in which a resin lens is provided on a base lens. In particular, it relates to a compound lens having a resin marker which can easily perform resin alignment when a resin lens is formed on a base lens. Background technique [0002] Various lenses are used in optical devices such as digital cameras and mobile phones, but due to aberrations in the images converged by spherical lenses, the images become blurred due to the aberrations. In order to suppress aberrations, there are methods such as using a plurality of lenses with different refractive indices, but if the number of lenses increases, it will violate the demand for reducing the weight of optical devices. Therefore, by forming a resin lens having an aspherical shape on the surface of a spherical lens, a compound lens that functions as an aspheric lens is made, and by using the compound lens in an optical device, aberration-corrected, light-weight ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00
CPCG02B3/00G02B1/041G02B3/0062G02B2003/0093
Inventor 匠蓝太田哲上田穰
Owner SANYO ELECTRIC CO LTD
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