| 发明名称 |
Optical System for an Infrared Ray |
| 摘要 |
An object of the present invention is to provide an optical system for an infrared ray which can provide a bright image, and can be applied to fixed focal length lenses among wide-angle to medium-telephoto. To achieve the object, the optical system for an infrared ray is constituted by a first lens having negative refractive power and a second lens having positive refractive power, these are arranged sequentially from an object side, wherein both the first lens and the second lens are made of an infrared transmitting material that transmits a light beam in an infrared wavelength range of 3 micron-meters or more to 14 micron-meters or less, and at least one of the lenses is made of an infrared transmitting material excluding germanium. |
| 申请公布号 |
US2015085353(A1) |
申请公布日期 |
2015.03.26 |
| 申请号 |
US201414488777 |
申请日期 |
2014.09.17 |
| 申请人 |
Tamron Co., Ltd. |
发明人 |
Kawaguchi Koji;Watanabe Yuko;Fuse Shingo;Yu Xiang |
| 分类号 |
G02B13/14;G02B9/10 |
主分类号 |
G02B13/14 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An optical system for an infrared ray constituted by a first lens having negative refractive power and a second lens having positive refractive power, these are arranged sequentially from an object side,
wherein both the first lens and the second lens are made of an infrared transmitting material that transmits a light beam in an infrared wavelength range of 3 micron-meters or more to 14 micron-meters or less, and at least one of the lenses is made of an infrared transmitting material excluding germanium. |
| 地址 |
Saitama-shi JP |
