Navigation Links
Cost-effective production of infrared lenses
Date:8/8/2012

Rain pelts down on the roof of the car; it is difficult to make out anything in the pitch dark. Suddenly, a deer runs out of the forest and onto the road, but the driver cannot respond in time. When it comes to such dangerous situations, micro-bolometers constitute one way of "extending" the human eye and defusing such dangerous situations. They detect infrared rays in other words, the heat emitted by a living creature and in case of danger, warn the driver through an acoustic signal or a warning light. At about 2,000 euros, these devices are still quite expensive and are only being used in luxury-class vehicles.

Production costs drop by over 70 percent

Part for part, these devices should be getting more affordable. Researchers at the Fraunhofer Institute for Mechanics of Materials IWM in Freiburg are working on the infrared lenses that are in the cameras. "We have developed a production process for lenses that enables us to lower the costs of these components by more than 70 percent. Thus the prize for the micro-bolometer could be reduced," says Dr. Helen Mller, scientist at IWM. Normally, the lenses are made out of crystalline materials like germanium, zinc selenide or zinc sulfide. The problem is that these materials are very expensive and can only be processed mechanically it takes grinding, polishing or diamond turning to shape them into the correctly. Obviously this involves high processing costs. "Instead of crystalline materials, we use the amorphous chalcogenide glass. Its softening temperature that is, the temperature at which it can be formed is low. Therefore, we can form it using non-isothermic hot stamping," says Mller. This process is similar to making waffles on a waffle iron. The researchers place the chalcogenide glass between two pressing tools which determine the form of the required lenses. Then, it is heated and formed between both pressing tools the "waffle iron" is clamped together. After a few minutes, the glass is cooled again to below the softening temperature and removed. And thus, the lens is already perfect. In contrast to conventionally processed optics, it no longer has to be further refined. The lenses manufactured this way exhibit the same excellent optical imaging quality as those that are polished. To ensure that no glass remains attached to the tools, their surface is coated with anti-adhesive, non-stick coatings, similar to the Teflon coating on a waffle iron. The scientists now want to further refine the process towards cost-effective mass production.

The applications for micro-bolometers and thus for cost-effective lenses are not limited to the automotive sector. Imagine, for example, these devices assisting older people in their homes, If the senior were to fall, the bolometer registers this event and sends an alarm to relatives or neighbors through an optical or acoustic signal. In production halls, bolometers can oversee and monitor the production processes of various products, to ensure the necessary temperatures are maintained and warn employees who are spending time in danger zones. In residential buildings, the devices could detect energy leaks, such as through unsealed windows or poorly insulated walls.


'/>"/>
Contact: Dr. Helen Mller
helen.mueller@iwm.fraunhofer.de
49-761-514-2350
Fraunhofer-Gesellschaft
Source:Eurekalert  

Related biology news :

1. Childhood obesity may affect timing of puberty, create problems with reproduction
2. The future of biomaterial manufacturing: Spider silk production from bacteria
3. A Kit for increasing insulin production
4. MARC travel awards announced for the 2012 Society for the Study of Reproduction 45th Annual Meeting
5. Technology deal for next generation production of green whistle
6. Denmark can triple its biomass production and improve the environment
7. Link between vitamin C and twins can increase seed production in crops
8. Scientists identify mechanism for regulating plant oil production
9. The first pilot wastewater treatment plant with integrated wood production opened in Mongolia
10. Production of chemicals without petroleum
11. Agricultural expert outlines path for developing nations to double food production, meet 2050 demand
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Cost-effective production of infrared lenses
(Date:4/5/2017)...  The Allen Institute for Cell Science today announces ... portal and dynamic digital window into the human cell. ... application of deep learning to create predictive models of ... a growing suite of powerful tools. The Allen Cell ... publicly available resources created and shared by the Allen ...
(Date:3/30/2017)... 30, 2017  On April 6-7, 2017, Sequencing.com will ... hackathon at Microsoft,s headquarters in ... focus on developing health and wellness apps that provide ... the Genome is the first hackathon for personal ... largest companies in the genomics, tech and health industries ...
(Date:3/27/2017)... 2017  Catholic Health Services (CHS) has been ... (HIMSS) Analytics for achieving Stage 6 on the ... In addition, CHS previously earned a place in ... electronic medical record (EMR). "HIMSS Analytics ... EMR usage in an outpatient setting.  This recognition ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... , ... Dr. Bob Harman, founder and CEO of VetStem Biopharma, Inc. ... The event entitled “Stem Cells and Their Regenerative Powers,” was held on August ... MPVM was joined by two human doctors: Peter B. Hanson, M.D., Chief of Orthopedic ...
(Date:10/10/2017)... Oct. 10, 2017 SomaGenics announced the receipt ... to develop RealSeq®-SC (Single Cell), expected to be the ... RNAs (including microRNAs) from single cells using NGS methods. ... need to accelerate development of approaches to analyze the ... "New techniques for measuring levels of mRNAs in ...
(Date:10/10/2017)... ... October 10, 2017 , ... The Pittcon Program Committee is ... honoring scientists who have made outstanding contributions to analytical chemistry and applied spectroscopy. ... world’s leading conference and exposition for laboratory science, which will be held February ...
(Date:10/9/2017)... ... , ... The award-winning American Farmer television series will feature 3 Bar Biologics ... at 8:30aET on RFD-TV. , With global population estimates nearing ten billion people ... to feed a growing nation. At the same time, many of our valuable resources ...
Breaking Biology Technology: