One of the most common problems you can have with laser pointers and one of the easiest to fix is dirty lens. You can tell the lens is dirty when the beam point is spotted or out of shape instead of the normal small tight circle.

There are many ways to clean the lens of a laser pointer such as q tips, microfibre, cotton buds and alcohol solution. Some of these may work, others will not but they all run the risk of damaging the lens. There are only two methods of cleaning lens that work well AND will not damage the lens. Those two methods are using compressed air and using professional lens cleaning tools such as a lenspen.

Compressed air and lenspens

The most common sources of compressed air are cans of compressed air and hand pumps or squeeze bulbs. The main criteria for compressed air sources is the air must be clean and dry. This is one reason why blowing on the lens is not recommended.

The best professional lens cleaning tools are lens pens from the company lenspens http://www.lenspen.com These lens cleaning tools are safe and suitable because they are designed to clean fragile precision optics such as camera lens.

Instructions

Safety is always an issue with high powered laser pointers so the first thing you do before cleaning the lens is remove the batteries from the laser. After removing the batteries, leave the battery end cap off as an extra precaution.

Compressed air will be able to clean 90% of lens so try using compressed air first. Gently unscrew the lens cap and with the nozzle held two to three centimeters away from the laser, direct a flow of air onto the lens for several seconds.

Install the batteries in the laser and test the beam. It should now be clean. If it is not, remove the batteries again and use the lenspen.

First gently use the brush of the lenspen to brush dirt and debris off the lens then use the pad on the other end of the lenspen on the laser pointer lens for several seconds to clean and polish the lens.

By the end of this process, then lens will have been thoroughly cleaned. If there is still a problem with the beam point or beam, it may be due to damaged lens.

A medical alert system is not just for the elderly like many people think. Medical alert systems become a necessity for many reasons such as critical illness, having a handicap, living alone, being blind and the list goes on and on. Although this medical alert systems sound like it could be very complicated it actually is very simple.

There is a medical alert button that can be worn around the neck, as a watch or on a belt clip. These are all waterproof so that they never have to be taken off. This way if you should fall in the shower you have your alarm right with you. The alarm button that you are wearing works directly with a medical alarm console. These connect to your phone line much like an answering machine does. When activated by you pushing the button the console will automatically dial the preprogrammed medical number to alert the emergency call center.

The emergency response center is where the signal from the medical alarm system is being monitored. You should make sure that the monitoring response center is not a third party but is done by the system provider. Once the alert system button has been pushed the monitoring center will attempt to communicate through the two way speaker to the injured person. The dispatcher will go through a set amount of questions and instructions. If there is no response they will get the squad there immediately. If there is communication then a family member may also be called to come to the house, as well as the squad to come to the victim's house.

Medical alert systems are a valuable to all those people who live alone or have health related issues. This is a great way to be able to stay in your own home and feel safe, but yet be able to keep your independence. Independence is very important to those who have always lived on their own. Nobody wants to go to a nursing home if they do not have too. With the medical alert system not only do the victims feel safe, but so do the family members who are helping taking care of them. Make sure to do more research on the providers in your area and what the monthly fees are and what the set up fees are. Once you get the medical alert system you will wonder how you lived without it.