Optical element unit, and manufacturing method for optical element unit
A technology of optical components and manufacturing methods, which is applied in the direction of optical components, optics, instruments, etc., and can solve the problems that concave parts and convex parts cannot be fitted, and the distance between lenses cannot be maintained at the design value, etc.
Inactive Publication Date: 2016-09-28
KONICA MINOLTA INC
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- Application Information
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Problems solved by technology
Specifically, there is a problem that if the concave portion is too large relative to the convex portion, a gap will be formed between the two when combined to cause eccentricity. On the other hand, if the concave portion is too small relative to the convex portion, the optical axis direction The concave part and the convex part cannot fit in the proper position, and the distance between the lenses cannot be maintained at the designed value
Method used
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Embodiment Construction
[0047] Hereinafter, the optical element assembly of the first embodiment of the present invention will be described. figure 1 Is a cross-sectional view of the first lens 10 constituting the optical element assembly, figure 2 It is a perspective view of the first lens 10. The first lens 10 has: a lens portion 11 having an optical surface, a flange portion 12 extending radially and in a plate shape around the lens portion 11, and an axis that coincides with the optical axis of the lens portion 11 and is convex from the lens portion 11 A short cylindrical fitting portion (first fitting portion) 13 extending in the optical axis direction between the edge portions 12. On the outer circumference of the fitting portion 13, eight fine-shaped portions 14 are formed at equal intervals.
[0048] Such as figure 2 As shown, each of the fine-shaped portions 14 has the same shape obtained by half-cutting a cone having an axis parallel to the optical axis, and is formed into a shape whose diam...
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Provided are an optical element unit and a manufacturing method for an optical element unit, with which highly accurate assembly of an optical element may be achieved, while minimizing cost. This optical element unit comprises a first mating portion of an optical element and a second mating portion of another component, which are mated, the first mating portion and / or the second mating portion being provided with a finely-shaped portion that protrudes in the orthogonal direction to the optical axis of the optical element. The extent of protrusion of the finely-shaped portion in the direction of a plane intersecting the optical axis of the optical element increases at greater mating depth of the optical element and the other component. The mated dimension of either the first mating portion or the second mating portion is greater than the mating dimension of either the second mating portion or the first mating portion, and less than the sum of the mating dimension and the maximum extent of protrusion of the finely-shaped portion.
Description
Technical field [0001] The invention relates to an optical element assembly and a manufacturing method of the optical element assembly. Background technique [0002] In recent years, thin portable terminals with imaging devices represented by smartphones, tablet personal computers, etc. have rapidly become popular. However, imaging devices mounted on such portable terminals are required to have high resolution and be compact. Therefore, as an imaging lens used in such an imaging device, it is of course required to be compact and excellent in optical characteristics. However, as competition with manufacturers in emerging countries has intensified recently, the advancement of cost reduction is also strictly required. [0003] However, in the case of assembling a plurality of lenses, for example, in order to exert design optical performance, it is necessary to accurately match the optical axis of each lens. Here, in order to align the optical axis of each lens, there is a method of ...
Claims
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Login to View More IPC IPC(8): G02B7/02
CPCG02B3/0075G02B7/003G02B7/022
Inventor 森基下间刚
Owner KONICA MINOLTA INC