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  | Frequently asked questions about... |
 | Optics | |
| Lasers | |
| Hardware and Positioners | |
| Laser Beam & Spectral Measurement | |
| Machine Vision | |
| Shutters | |
| Tables & Breadboards | |
| Microscope Components | |
| Apertures & Spatial Filters | |
| Lab Accessories |
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| I have a lens/filter/mirror/optic that I purchased from Melles Griot and I want to clean it. What cleaning methods are recommended for my item?
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| The recommended cleaning methods are dependent on the type of optic and its coatings.
You can download the recommended Melles Griot cleaning procedures document below. The first part of the document describes five separate cleaning procedures with step-by-step instructions. The second part of the document lists which procedures should be used for which component. Cleaning Methods (PDF) | |
| Which eyewear is appropriate for my laser?
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| Melles Griot offers an extensive line of laser safety eyewear which covers most common laser applications. Because of the complex requirements for laser safety, we recommend that you contact one of our applications engineers and let us recommend the product that can best protect your vision. To do this, we need information about your laser and application. Please download and fill out the Laser Safety Eyewear information request form provided below before contacting the applications engineer.
Laser Eyewear Form (PDF) | |
| Here are some definitions that may help when filling out the form: Continuous Wave Laser power is fixed or variable, but not delivered in a discrete pulse envelope. Pulsed Laser energy is delivered in a single discrete pulse at a specified repetition rate. Power The average power of a continuous wave (cw) laser beam expressed in watts (W). Energy per Pulse The energy of an individual pulse expressed in joules (J). Pulse Length The time, in seconds, of an individual laser pulse, usually measured at the one-half power points on the pulse envelope. Pulse Repetition Rate The rate at which pulses are repeated in a uniformly pulsed train of pulses expressed at the frequency of repetition of the pulses in the unit of hertz (pulses per second, Hz). Gaussian Criteria The definition as used in the ANSI Z136.1 Standard for both beam diameter and beam divergence, require that these quantities be measured at the 1/e power point (63.2%) on the ideal Gaussian beam intensity profile. Note that most laser equipment manufacturers specify these beam properties at the 1/e2 power point (86.5%), which is a factor of 1.414 larger than the 1/e power point. Beam Dimension Beam size (typically diameter) in millimeters, measured on the longest dimension. Beam Divergence Change in beam size with respect to distance measured in milliradians. |
