Abstract:
An embodiment provides an imaging lens comprising: a body in which a first opening and a second opening are disposed; a first lens group which is disposed on the body and corresponds to the first opening; and a second lens group which is disposed on the body and corresponds to the second opening, wherein the focal distance of the first lens group is greater than 1.8 times and less than 2.1 times the focal distance of the second lens group.
Abstract:
A front light unit of an embodiment comprises: a light source unit for an image display device; a light guide unit for guiding light incident from the light source unit and outputting the guided light to a display unit; and a holographic optical element unit being opposite to the display unit and disposed on the light guide unit. Therefore, the present invention can adjust the direction of light output from the light source unit and increase the quantity of light transferred to the display unit, using a pattern formed in the holographical optical element unit, thereby improving the efficiency of light supplied from the light source unit and reducing the sizes of the light unit and the display device including the same.
Abstract:
Disclosed are a sensor, which includes a cardiac impulse sensor for sensing a cardiac impulse of a human body spaced apart from the cardiac impulse sensor to generate an output signal, and a wireless processing unit for processing and outputting an operation signal of an electronic device according to an output signal of the cardiac impulse sensor, a network system including the sensor, and a method of controlling an electronic device. The electronic device is effectively controlled.
Abstract:
An embodiment of a wearable display device may comprise: a base having a receiving space formed therein; a prism placed in front of an eye of a user, and adjusting the path of light, at least a part of which is incident, to allow a displayed virtual image to arrive at the eye; and a fastening unit for making a part of the prism and a part of the base be fastened to each other, thereby limiting the motion of the prism with respect to the base.
Abstract:
According to an embodiment of the present disclosure, there is provided a human body wearable device including: a light emitting unit for generating light to outside, a light receiving unit for receiving light incident from outside; and a control unit for controlling an operation of the light emitting unit and detecting an intensity of light incident on the light receiving unit depending on the operation of the light emitting unit, and detecting a wearing state of the human body wearable device based on an intensity of detected light, wherein the control unit detects the wearing state using a difference value between an intensity of the light incident on the light receiving unit in an ON section of the light emitting unit and that of the light incident on the light receiving unit in an OFF section of the light emitting unit.
Abstract:
Disclosed is an optical apparatus including a display unit, a lens configured to pass an image formed by and transmitted from the display unit, a base configured to accommodate the lens therein, and an adjustment unit configured to move the lens relative to the base so as to adjust a path of light passing through the lens.
Abstract:
A wearable display device according to an embodiment may comprise: a first prism, positioned in front of a user's eye, for controlling the path of an incident light and enabling the arrival of a virtual image to be displayed on the eye; a second prism, coupled to the first prism, for reducing distortion of a real image arriving at the user's eye; and a coating layer which is interposed between the first prism and the second prism and of which the brightness is controlled in inverse proportion to the ambient brightness, such that the visibility of the virtual image increases.
Abstract:
Disclosed are a sensor module and a method for operating the same. The sensor module includes a module unit including a first body having a cavity and a module substrate received in the first body; and a sensor unit including a second body detachable from the cavity of the module unit and a sensor received in the second body, wherein the module unit reads an output signal from the sensor unit to generate sensing information and wirelessly outputs the sensing information.
Abstract:
An apparatus for measuring a bio-signal includes: a light source emitting a predetermined amount of light into a human body; a light receiving unit receiving at least some of the predetermined amount of light; and a cover, which is touchable by the human body, protecting the light source and the light receiving unit. The light source and the cover are arranged such that the light source and the cover are separated by a first gap, the light receiving unit and the cover are arranged such that the light receiving unit and the cover are separated by a second gap, and the first gap is less than the second gap.
Abstract:
There are provided a diffractive optical element in which a diffraction pattern is formed on at least one surface, wherein a height of the diffraction pattern changes from a center to an edge of the one surface, and a height of a first diffraction pattern element formed at the center and a height of a second diffraction pattern element formed at the edge are different, and an optical device having the same.