LENS DEVICE, IMAGING APPARATUS, AND MOVING BODY

• Main Authors: KINO MASAHIRO, HAKU RYUKICHI
• Format: Patent
• Language: English; Japanese
• Published: 02.07.2020
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

To solve such a problem that there is a possibility that when a light quantity control mechanism such as a diaphragm mechanism is removed, an optical characteristic is changed because the positional relationship of a lens system or the like is deviated.SOLUTION: A lens device may include a first lens group including at least one lens. The lens device may include a second lens group including at least one lens. The lens device may include the light quantity control mechanism which is arranged between the first lens group and the second lens group and controls the quantity of light passing through the second lens group. The lens device may include a holding frame which attachably/detachably holds the light quantity control mechanism in such a state that the positional relationship between the first lens group and the second lens group is maintained.SELECTED DRAWING: Figure 8 【課題】絞り機構などの光量制御機構を取り外す場合に、レンズ系の位置関係などがずれて光学特性が変化してしまう可能性がある。【解決手段】レンズ装置は、少なくとも１つのレンズを含む第１レンズ群を備えてよい。レンズ装置は、少なくとも１つのレンズを含む第２レンズ群を備えてよい。レンズ装置は、第１レンズ群と第２レンズ群との間に配置され、第２レンズ群を通過する光の量を制御する光量制御機構を備えてよい。レンズ装置は、第１レンズ群と第２レンズ群との位置関係を維持した状態で、光量制御機構を着脱可能に保持する保持枠を備えてよい。【選択図】図８