Abstract: A display system for sensing a finger of a user applied to the display system includes a display panel; a sensor for sensing the finger; a sensing light source configured to emit a first light having a first wavelength W1; and a reflective polarizer disposed between the display panel and the sensor. For a substantially normally incident light, an optical transmittance of the reflective polarizer versus wavelength for a first polarization state has a band edge such that for a first wavelength range extending from a smaller wavelength L1 to a greater wavelength L2 and including W1, where 30 nm?L2?L1?50 nm and L1 is greater than and within about 20 nm of a wavelength L3 corresponding to an optical transmittance of about 50% along the band edge, the optical transmittance has an average of greater than about 75%.

Abstract: An combination of a male connector electrical contacting device, a female connector electrical contacting device and an apparatus is disclosed for enabling the secure engagement of a first electrical cable of the male connector electrical contacting device to a second electrical cable of the female connector electrical contacting device. The apparatus includes a rigid body having a center region and a first end region and a second end region positioned at opposite ends of the center region. Each end region of the rigid body defines (a) a leg having a proximal end and a distal end relative to the center region, wherein the proximal end of the leg forms about a ninety degree turn relative to the center region, and (b) a substantially S shaped structure having a middle section, proximal hook section and distal hook section in relationship to the distal end of the leg.

Abstract: An apparatus is disclosed for enabling the secure engagement of a first electrical cable having a male connector electrical contacting device to a second electrical cable having a female connector electrical contacting device. The apparatus includes a rigid body having a center region and a first and second end regions positioned at opposite ends of the center region. Each end region defines a S shaped structure having a single turn. Each end region S shaped structure has a middle section, proximal hook section and distal hook section in relationship to the center region. The middle section and proximal hook section of each end region are positioned with regard to the longitudinal axis of the center region in the same longitudinal plane.

Abstract: An indicator to be squeezed between the parts to be aligned in which the indication is provided by a level device associated with the indicator.