NOVELTY - An integrated sub-assembly (1300) comprises a light collimating device (100) having a first side and a second side bounding a light containing region; and an element having a first side and a second side, configured as a reflective polarizer (1320), an absorptive polarizer (1330), a transflector, or a light diffusing film (1310). The light collimating device is arranged with the element such that the first side of the light collimating device faces the first side of the element and there is no air layer between the light collimating device and the element.    USE - For light management in the manufacture of solar cell.    ADVANTAGE - The integrated sub-assembly does not have air gaps, thus avoiding the light loss; and maintains integrity in the physical working element.    DETAILED DESCRIPTION - An integrated sub-assembly (1300) comprises a light collimating device (100) having a first side and a second side bounding a light containing region; and an element having a first side and a second side, configured as a reflective polarizer (1320), an absorptive polarizer (1330), a transflector, or a light diffusing film (1310). The light collimating device is arranged with the element such that the first side of the light collimating device faces the first side of the element and there is no air layer between the light collimating device and the element. The sub-assembly further comprises a material layer having a lower index of refraction than the light containing region of the light collimating device; and a backlight and a liquid crystal suspension associated with the light collimating device and the element such that there are no air layers between the light collimating device, the element, and the liquid crystal suspension. The material layer comprises polymer, glass, pressure sensitive adhesive, or structural adhesive. The index of refraction of the material layer is lower than an index of refraction of the light containing region of the collimating device by at least 0.05 (preferably at least 0.15). An INDEPENDENT CLAIM is included for making the assembly involving associating first optical element having an external air boundary that controls light management with the second optical element such that the external air boundary is eliminated at a side where the first optical element is associated with the second optical element.    DESCRIPTION OF DRAWING(S) - The figure shows a plan view of the integrated sub-assembly.    light collimating device (100)    integrated sub-assembly (1300)    light diffusing film (1310)    reflective polarizer (1320)    absorptive polarizer (1330)