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Optical element position adjusting device

A technology of optical components and adjustment devices, applied in the direction of optical components, optical, electrical components, etc., can solve problems such as difficult to obtain optical systems, and achieve the effect of simple structure and easy local blur

Inactive Publication Date: 2007-07-11
OLYMPUS CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to obtain an optical system that satisfies the desired imaging performance while only improving processing accuracy

Method used

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no. 1 Embodiment approach

[0039] A first embodiment of the present invention will be described using FIGS. 2 to 5 .

[0040] FIG. 2 is an explanatory diagram showing a schematic configuration of an optical element position adjustment device according to the present embodiment. FIG. 3 is an explanatory diagram showing the structure of the substrate 22 in the position adjustment device of the present embodiment. 4 is a graph showing the illuminance distribution of a captured image, which is a graph obtained by the arithmetic processing unit in the personal computer 19 using the image captured by the CCD camera 1 in the position adjustment device of this embodiment. FIG. 5 is an explanatory view of the adjusted lens system 10 in the position adjustment device of the present embodiment viewed from the CCD camera 1 side.

[0041] The position adjusting device of the present embodiment has: a light source 17 and a substrate 22 as a light beam generating part; a CCD camera 1 as an imaging device; a holding p...

no. 2 Embodiment approach

[0078] A second embodiment of the present invention will be described using FIGS. 6 to 8 .

[0079] FIG. 6 is a plan view showing the structure of the substrate 23 in the optical element position adjustment device of the present embodiment. 7 is an explanatory view of the state of the light beam passing through the substrate 23 in the position adjustment device of this embodiment. (a) is an illustration of the irradiation position of the light beam passing through the substrate 23 on the adjusted lens system 10 as viewed from the lower side of the adjustment device. In the explanatory diagram shown, (b) is an explanatory diagram showing a state in which the image of the light beam captured by the CCD camera 1 is displayed on the monitor of the personal computer 19 . FIG. 8 is a graph showing the illuminance distribution of a captured image, which is a graph obtained through an arithmetic processing unit in the personal computer 19 using an image captured by the CCD camera 1 in...

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Abstract

The present invention provides a position adjusting device for optical element, the device has a beam of light generating section, which has light source arranged for slanting the outgoing optical axis corresponding to the same of the optical system; a camera device, which is arranged on the position for receiving beam of light from above beam of light generating section and through above optical system; a rotatable holder section, which holds above optical system between above camera device and above light source; a position adjusting information calculating device, which is used for calculating information desired by position adjustment of the optical element having position not fixed in said optical system; and a movement device, which is used for moving above optical element in direction of being vertical with optical axis of above optical system. Thus, the position adjusting device for optical element is useful, especially in field of manufacturing minitype optical system desiring strict precision in imaging capability and excentralization precision.

Description

technical field [0001] The present invention relates to a position adjustment device for adjusting the position of an optical element while evaluating its imaging performance. Background technique [0002] In an optical system, there is a structure composed of a plurality of optical elements. In this case, if the optical element is assembled in a state deviated from the vertical direction with respect to the optical axis of the optical system (that is, in a state decentered in the shift direction), aberrations will occur due to the decentering of the optical element. As a result, it was found that even with an on-axis beam, a phenomenon in which the converged point image is dragged by a coma tail, that is, on-axis coma aberration occurs. On-axis coma aberration becomes a cause for deteriorating the imaging performance of the optical system. [0003] Therefore, conventionally, there is known a device that adjusts the position of an optical element by detecting the aberratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/00H04N5/225
Inventor 桥本安史高桥利夫
Owner OLYMPUS CORP
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