Discussion Overview
The discussion revolves around the cost differences between infrared (thermal) cameras and infrared sensors, exploring the technical and material factors that contribute to the pricing of thermal imaging technology.
Discussion Character
- Technical explanation
- Debate/contested
Main Points Raised
- Some participants suggest that infrared cameras are expensive due to the need for imaging arrays with many sensors, unlike inexpensive IR sensors used in devices like remote controls.
- It is noted that the development of semiconductors for infrared cameras is costly, although manufacturing costs can be low with high volume.
- Participants mention that infrared imaging arrays are made from expensive materials for technical reasons, which contributes to the overall cost.
- One participant proposes that a low-resolution thermal camera could be constructed using several infrared sensors sensitive to human body emission wavelengths.
- Another participant points out the necessity of an optical system that can focus images onto an array of infrared sensors, which may be challenging.
- There is a mention of the high cost of lenses made from germanium, although a later reply provides a comparison of the current prices of germanium and gold, indicating that germanium is not as expensive as gold.
- A participant shares information about a specific thermal camera for the iPhone 5/5S, noting its resolution and price range.
Areas of Agreement / Disagreement
Participants express varying views on the factors contributing to the cost of infrared cameras, with no consensus reached on the relative importance of each factor or the feasibility of low-resolution thermal cameras.
Contextual Notes
Some assumptions about the technical requirements for infrared imaging and the materials used in lenses are discussed, but these remain unresolved and depend on specific applications and technologies.