发明名称 |
Image pickup apparatus |
摘要 |
A second lens frame has a shape including: a contact portion having a cylindrical shape with a diameter smaller than an inner diameter of a space portion of a first lens frame, a distal end portion thereof being brought into contact with an end face of the first lens frame; and a fitting portion having a diameter larger than that of the contact portion in a cylindrical shape fitting on an inner wall surface of the first lens frame, and when the second lens frame is inserted into the space portion of the first lens frame, a gap is formed therebetween. Accordingly, a distal end portion of the second lens frame is reliably brought into contact with an end face of a flange portion of the first lens frame, whereby variations in position in an optical axis direction are eliminated, enabling provision of a stable optical precision. |
申请公布号 |
US8823787(B2) |
申请公布日期 |
2014.09.02 |
申请号 |
US201213646058 |
申请日期 |
2012.10.05 |
申请人 |
Olympus Medical Systems Corp. |
发明人 |
Kibayashi Takehide |
分类号 |
A62B1/04;H04N7/18;H04N9/47;G02B15/14;G02B23/24;A61B1/00;G02B7/10;A61B1/05 |
主分类号 |
A62B1/04 |
代理机构 |
Scully, Scott, Murphy & Presser, P.C. |
代理人 |
Scully, Scott, Murphy & Presser, P.C. |
主权项 |
1. An image pickup apparatus including an image pickup system disposed at a rear of an objective optical system,
wherein the objective optical system includes a plurality of lenses and a plurality of lens frames, and in at least two lens frames of the plurality of lens frames, a first lens frame includes a step portion inside, which a distal end portion of a second lens frame is brought into contact with, the second lens frame includes a contact portion having a distal end portion to be brought into contact with the step portion with a gap provided between the inner diameter of the first lens frame, and a fitting portion which is provided on a rear side relative to the contact portion in an optical axis direction, has a diameter larger than a diameter of the contact portion, and fits on an inner wall surface of the first lens frame. |
地址 |
Tokyo JP |