FIELD: physics, optics.
SUBSTANCE: invention relates to collimators which can be used to illuminate liquid crystal screens. The collimator is in the form of a wedge-like optical waveguide having a first end and a second end opposite to the first end. The first end is thinner than the second end. The collimator also has a visible surface passing at least in part between the first end and the second end, and a back surface opposite the visible surface. The visible surface has a first critical angle, and the back surface is configured to be reflective below the first critical angle. Furthermore, an end reflector, having a polyhedral (faceted) lens, is placed at the second end of the optical waveguide.
EFFECT: reduced overall dimensions of the collimator.
15 cl, 10 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SCANNING COLLIMATION OF LIGHT BY FLAT LAMP | 2010 |
|
RU2531506C2 |
| APERTURE MULTIPLIER USING A RECTANGULAR WAVEGUIDE | 2017 |
|
RU2746980C1 |
| ILLUMINATOR WITH LED AND IMPROVED REFLECTIVE COLLIMATOR | 2013 |
|
RU2636754C2 |
| SET TO FORM IMAGE FROM ALL DIRECTIONS | 1997 |
|
RU2195085C2 |
| OPTICAL ELEMENT FOR TRANSFORMATION OF LIGHT FLOW AND OPTICAL TRANSDUCER, WHICH USES SAID ELEMENT | 1999 |
|
RU2159947C1 |
| LIGHTING DEVICE BASED ON LIGHT GUIDE WITH LIGHT-SCATTERING PARTICLES AND LIGHT ANGLE SELECTION MODULE | 2013 |
|
RU2638822C2 |
| LIGHT COLLIMATOR AND LIGHTING DEVICE COMPRISING SAID LIGHT COLLIMATOR | 2012 |
|
RU2583348C2 |
| REFRACTOMETER | 1992 |
|
RU2049985C1 |
| ACOUSTIC PANEL WITH LIGHTING PROPERTIES | 2013 |
|
RU2640060C2 |
| AMBIENT LIGHT SYSTEM FOR DISPLAY DEVICE | 2009 |
|
RU2512123C2 |
