A Design Method for Infrared Optical Window Films with Controllable Thermal Radiation
An infrared optical window and thin film design technology, applied in optics, optical components, instruments, etc., can solve problems such as low emissivity and reduced sensitivity of infrared detection systems
Active Publication Date: 2019-08-16
TIANJIN JINHANG INST OF TECH PHYSICS
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although refrigeration can be used to cool the window, the change of the window emissivity due to the anti-reflection treatment of the film still needs to be considered. The sensitivity is reduced, so how to reduce the radiation in the leeward direction of the window is one of the issues worthy of attention
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0049] The present invention will be described in detail below with reference to the drawings and examples.
[0050] In order to make the purpose, content, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0051] The present invention provides a method for designing an infrared heat radiation control film for an optical window. The two surfaces of the optical window are respectively denoted as side A and side B, where side A is the windward side and is treated with an antireflection protective film, and side B is the leeward side. Carry out anti-reflection film treatment.
[0052] 1) Design method of antireflection protection film on the windward side: select high refractive index material: select germanium carbide film (Ge 1-x C x ) And low refractive index materials: two kinds of thin film materials, diamond-like carbon film (DLC)...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a thermal radiation controllable infrared optical window thin film, and specifically relates to a thermal radiation regulation method for a long wave transparent region of an infrared optical window. The main characteristics of the method are that based on a combination of a GeC thin film and a diamond-like carbon thin film, two layers of anti-reflection protective films of a windward side are designed, and based on a combination of a zinc sulfide thin film and a yttrium fluoride thin film, an anti-reflecting thin film of a leeward side is designed. The main design idea is that residual reflectance of the leeward side is lower than residual reflectance of the windward side, finally realizing that radiance of the leeward side is lower than the radiance of a base. The method can be applied in an optical window of a long wave infrared optical imaging system which has thermal radiation control requirement.
Description
Technical field [0001] The invention belongs to the technical field of optical films, and relates to a technology for controlling the characteristics of an optical window film of an infrared imaging system, in particular to a design method of an integrated structure infrared optical window film with controllable thermal radiation. Background technique [0002] With the development of infrared physics and device technology, imaging and detection technology based on passive infrared is widely used in scientific research and national defense. The optical window is an important optical component of infrared imaging and detection technology. The aero-optical effect generated by aerodynamic heating of high-speed flight reduces the signal-to-noise ratio of the optical detection system to target detection, thereby reducing the detection distance to the target, and even forming " "Thermal barrier" and submerged need to detect the target signal. The environment in which the optical window...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/115
CPCG02B1/115
Inventor 刘华松杨霄孙鹏冷健刘丹丹季一勤
Owner TIANJIN JINHANG INST OF TECH PHYSICS