Laser speckle is an interference pattern that can affect all laser projectors to varying degrees due to the coherence of the lasers, and it’s more pronounced on triple laser projectors.
Speckles are inevitable when using a triple laser projector. Speckles are inevitable when using a triple laser projector. The image looks frosted. But will all the triple laser projectors have speckle effects?
Features of laser light source
Laser has high brightness, good directionality, and monochromaticity among its important features.
Its feature of high brightness can improve the brightness of a picture, enhancing our viewing experience. Good directionality can improve the light efficiency of the projector and reduce the loss of brightness. And monochromaticity is for the improved color gamut of overall picture quality. You may have a question: So is there a feature of the laser that is a disadvantage itself? It’s what we are going to talk about- the high coherence of laser.
The high coherence of laser light source
Coherent in laser light means wavelengths of the laser light are in phase in space and time. The strong coherence of the laser will produce large interference fringes and speckles, which will affect the quality of the projected image and reduce the clarity and resolution of the image.
Speckles in triple laser projectors
Laser speckle is an interference pattern that can affect all triple laser projectors to varying degrees due to the coherence of the lasers. It’s because triple laser projectors use red, green, and blue pure laser light systems, which may produce disordered interference on the screen, forming random, bright, and dark spots.
Anti-speckle laser projectors
While speckle can be a disruptive viewing experience for movie viewing, there are techniques to achieve speckle suppression. CASIRIS has established an innovative projection system including three primary laser light source modules for high-performance laser home theater and speckle suppression to mitigate speckle effects. By adding the regulation and control light source in the laser illuminator, the speckle contrast is greatly lowered, so as to effectively inhibit the speckle phenomenon in a laser projection image.
To discover more about triple laser projectors, check out https://www.casiristech.com/