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Optical assembly and image sensing apparatus with said assembly

A technology of optical components and optical components, applied in the direction of optical components, optics, image communication, etc., can solve problems that may not be raised

Inactive Publication Date: 2005-05-04
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, how to hold and join these optical components so that the mutual positional relationship is maintained at a prescribed relationship, how to avoid unnecessary light beams and their influence, how to ensure ease of manufacture, and what kind of structure to form so that they are not easily affected by dust, etc. As a technical problem in the specific realization of the product and the technology related to its solution, a specific solution may not be proposed

Method used

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  • Optical assembly and image sensing apparatus with said assembly
  • Optical assembly and image sensing apparatus with said assembly
  • Optical assembly and image sensing apparatus with said assembly

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0034] figure 1 It is a schematic configuration diagram showing the outline of the imaging device 100 to which the optical module PA according to the first embodiment of the present invention is applied. figure 1 The imaging device 100 shown has an imaging optical system 110 , an imaging element 120 and an image data generating unit 130 .

[0035] The imaging optical system 110 as its main body is composed of the first optical member 10 and the second optical member 20 which are prisms to maintain a predetermined relationship between the relative positions of the two, and a positioning holding member 30 having a light beam transmission hole. Keep the optical assembly PA constituted. In addition, 111, 112 are glass covers. At least one of them can be an IR clipping filter with an infrared blocking function. Furthermore, the positioning holding member 30 has a functional part as an aperture. The optical unit PA will be described later.

[0036] The imaging element 120 photo...

no. 2 approach

[0051] Figure 8 (a) (b) is a perspective view which shows the structure of the light beam exit surface 13 of the 1st optical member 10, and the light beam entrance surface 21 of the 2nd optical member 20 concerning 2nd Embodiment of this invention. Figure 9 (a) (b) is a top view which shows the shape of both front and back surfaces of the positioning holding member 30 of this embodiment. This embodiment differs from the first embodiment in that the first posture adjustment unit and the second posture adjustment unit are provided on the positioning holding member 30 side.

[0052] Such as Figure 9 (a) As shown in (b), on one corresponding surface 31 of the positioning holding member 30 , first positioning holding member side posture adjustment portions 37 a , 37 b , 37 c constituted by hemispherical protrusions are formed. On the other corresponding surface 32 of the positioning holding member 30, second positioning holding member side posture adjustment portions 38a, 38b,...

no. 3 approach

[0055] Figure 10 (a) and (b) are diagrams showing the structure of the light beam exit surface of the first optical component 10 and one corresponding surface 31 of the positioning holding member 30 according to the third embodiment of the present invention, and (a) shows that the first optical component 10 and It is an exploded perspective view of the positioning holding member 30 separated, and (b) shows an enlarged cross-sectional view of a main part. The difference between this embodiment and the first embodiment is that the fitting shape portion of at least one of the first optical component 10 and the second optical component 20 is formed as a cone-shaped protrusion, and the cone-shaped The protruding portion also serves as two functional portions, the functional portion for positioning and fitting and the functional portion for posture adjustment. As a result, a special effect of simplifying the structure can be obtained.

[0056] Such as Figure 10(a) As shown in (...

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PUM

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Abstract

The optical element assembly includes a 1st optical element 10, a 2nd optical element 20 and a positioning / holding member 30, and the 1st optical element 10 is provided with self-engaging parts 15a and 15b arranged on the peripheral part of an effective area 14 as an effective luminous flux passing area on one exit surface side 13 of the element 10 so as to correspond to one pair of engaging parts 35a and 35b formed on one corresponding surface 31 facing the exit surface 13 of the holding member 30, and the 2nd optical element 20 is provided with self-engaging parts 26a and 26b arranged on the peripheral part of an effective area 24 as an effective luminous flux passing area on one incident surface 21 side of the element 20 so as to correspond to the other pair of engaging parts 36a and 36b formed on the other corresponding surface 32 facing the incident surface 21 of the holding member 30, and an optical diaphragm aperture 33 for allowing light to be transmitted from one corresponding surface 31 of the holding member 30 to the other corresponding surface 32 is formed in the holding member 30.

Description

technical field [0001] The present invention relates to an optical assembly composed of a combination of optical components such as a plurality of prisms, and an imaging device (for example, including a digital camera, a mobile phone with a camera function, a personal computer or camera, etc.). Background technique [0002] In recent years, the miniaturization of imaging devices such as digital cameras, camera-equipped mobile phones, personal computers, and video cameras has been remarkably advanced. Along with the miniaturization of imaging devices, there is an increasing demand for miniaturization and thinning of the modules of the imaging function part (assembled body having an optical system as a main component) incorporated in the main bodies of these devices. [0003] Coaxial optical systems are generally used in such assemblies. The so-called coaxial system refers to an optical system in which optical components such as lenses are arranged to be rotationally symmetr...

Claims

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Application Information

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IPC IPC(8): G02B17/08G03B17/02H04N5/225
Inventor 安藤博之永田哲生松本和宏
Owner OLYMPUS CORP