Green or red laser, what's the difference?
The human eye is sensitive to light in the wavelength range of about 711 nm (red) to 389 nm (violet), where the sensitivity varies depending on wavelength. Infrared light and short-wave light (ultraviolet) operate outside this range and is thus invisible to us. Hultafors’ lasers operate within the 80 nm (red) and 529 nm (green) range and are therefore clearly visible to the human eye.
The green laser is in the middle of the wavelength range where the eye is most sensitive and is therefore highly visible. In fact, green laser has up to four times better visibility than red laser.
Few buttons
Hultafors’ intuitive lasers are easy to understand and easy to use. For instance, they feature few buttons in order to make your work more efficient.
100% robust precision
Our distance measurers are made of robust plastic and ready for instant use. All tools are tested and calibrated thoroughly before delivery to ensure accuracy and precision.
Laser classes
Laser classes are generally divided into two groups – those that conform with European standard EN 601125-1 and those that conform with American standard FDA 1040.10:1.4.97. In addition, there are eight laser classes that specify the laser’s strength – the higher class the stronger and thus also more harmful laser.
We use laser class 2 and the slightly brighter class 2M. Both classes provide highly visible lines without being directly hazardous to the human eye.
Note! Remember to never point the laser beam straight into your own or someone else’s eyes.
A warning symbol and information must be shown on every laser product.
IP Classification
Electronic equipment designed to be used in tough conditions must come with a good enclosure in order to prevent dust, moisture and water from penetrating the device. IP classification defines the electronic product’s degree of protection against solid objects as well as against water.
Our lasers and distance measurers come with IP classification IP42, IP54 or IP65. The first number of the IP classification refers to solid objects whereas the second number refers to water. The higher the number, the higher the protection.
IP42 classification means that the product is protected against objects that are >1mm (4) and protected against direct sprays of water up to 15 degrees from vertical (2).
IP54 classification means that the product is dust protected (5) and protected against splashing water (4).
IP65 classification means that the product is totally dust tight (6) and protected against strong jets of water (6).
Levelling types
Lasers can be levelled in several ways. The most common is self-levelling, which is the method we use in our range of intuitive tools.
Self-levelling laser
A self-levelling system with a magnetic pendulum and a gyro that ensures that the laser tool is always levelled. The fastest and easiest way to precise measurements.
Automatic laser
The levelling is adjusted with the help of a servo motor and an electronic vial. Our range does not include any lasers with this kind of levelling.
Manual laser
Levelling by means of adjusting screw and vial by hand. Mostly used for simpler tasks.
Locked pendulum
Hultafors’ self-levelling lasers come with a magnetic pendulum and a gyro that ensures that the laser tool is always levelled during use. In order to protect the pendulum from damage when the tool is not in use, for example during transportation, the pendulum unit automatically locks in position when you switch off the laser. Next time you switch on the laser tool, make sure that the pendulum has been released from the lock mode and moves freely before use.
Avoid damage to the eyes
The strength of the laser diode is defined by different laser classes.
All of our products are class 2 or Class 2M and are not directly hazardous to the human eye but shall always be used carefully. Improper or incorrect use of the laser device can cause serious injuries, especially to the human eye. Blinding by laser radiation can indirectly lead to serious accidents, especially for people who are driving a vehicle or operating machinery. To avoid these accidents:
-
Do not stare or look into the laser beam.
-
Do not set up the laser beam and the laser plane at eye level or aim at people.
-
Do not use lasers together with optical instruments.
