Light pillar

Abstract: A road indication device is provided. The road-guidance indicating device has a light projection unit including light control means for controlling a lamp and light emitted from the lamp. The light projection unit project a light whose peak luminosity is 30000 cd or more, i.e., the light has a luminosity equal to or larger than a peak luminosity of a headlight of a car running on the road. Since a light pillar of light having a high light output and a thick light pillar is projected from the light projection unit, the visuality of the light pillar is improved even in the bad weather and the boundary between the driveway and the shoulder on the road can be affirmatively guided and indicated.

Abstract: The Path of Light.- The Reflection of Light.- Daguerreotypes: Light Captured.- The Refraction of Light.- Lenses: From Water Drops to Telescopes.- Sources of Light and Color.- Diffraction and Interference.- Rainbows.- Sea, Sky, and Cloud.- Polarized Light and Sunglasses.- Photons, Electrons, and the Atom.- X-rays, Ultraviolet Light, and Infrared.- X-ray Emission: Earth, Moon, and Mars.

Abstract: The invention discloses a multifunctional environmental protection sunshine collection method, a device and application thereof. The multifunctional environmental protection sunshine collection method comprises the following steps: sunshine is highly compressed into an ultrahigh light pillar, after being cooled, the light pillar is sent into a spectrum separation and deployment storehouse and then the incident light is deployed, separated, combined, and the like; the ultra-intense visible light is led into a light pipe, optical lines are transmitted and then uniformly diffused. The invention has the advantages that according to statistics made by experts, electric consumption on daytime illumination occupies more than 40% of electric consumption on illumination, therefore, employing the multifunctional environmental protection sunshine collection device can use free sunshine light instead of electric light illumination during daytime; the device is the popularized, only China can save about 82 billion degrees of electricity per year, calculated as 0.8 Yuan per degree, 65.6 billion Yuan can be saved per year, besides, the device also has no pollution and can reduce the emission and pollution brought by generating electricity.

Abstract: The device contains a first light source (21) that emits a continuous light and a second light source (18) that emits intermittent light, a photodiode (19) that responds to the light of both light sources and a transparent plate (14) that is located in the light path between the first light source and the photodiode and the surface of which constitutes a measuring surface for ice formation. As long as the measuring surface does not ice up and the plate remains optimally transparent, the photodiode is pushed into the area of saturation by the light rays of the first light source and the light rays of the second light source have little influence on the photocurrent. If ice forms on the measuring surface the light rays of the first light source are weakened and the photocurrent of the photocell is increasingly modulated by the light rays from the second light source. The modulated photocurrent is used as a quantitative signal for the build-up of the ice layer. As the formation of ice impairs the transparency of the plate, by experience, much more rapidly than a coating with dust, it is possible to distinguish between an accumulation of dirt and ice formation on the plate with the aid of electronic circuit that monitors the time-related decrease of transparency.