32 results about "Foot-candle" patented technology

This invention generally relates to automated shade systems. An automated shade system comprises one or more motorized window coverings, sensors, and controllers that use one or more algorithms to control operation of the automated shade control system. These algorithms may include information such as: 3-D models of a building and surrounding structures; shadow information; lighting and radiation information; ASHRAE clear sky algorithms; log information related to manual overrides; occupant preference information; motion information; real-time sky conditions; solar radiation on a building; a total foot-candle load on a structure; brightness overrides; actual and / or calculated BTU load; time-of-year information; and microclimate analysis.

A flowering process-modeling candle with a rotated shadow, candlelight and music comprises a base, wherein a rotation mechanism is arranged in the base, a fixed holder is arranged on the base, a modeling barrel is arranged in the fixed holder, a tension spring is arranged between the modeling barrel and the fixed holder, candle inserting supporting plates are evenly distributed on the outer side of the modeling barrel, small candles are arranged on the candle inserting supporting plates, a hollow top cover is arranged at the top of the candling barrel, a candle inserting member is arranged on the hollow top cover, a main candle is arranged in the candle inserting member, binding line through holes are arranged on two sides of the candle inserting member, and binding lines are arranged in the binding line through holes, fixed on the candle inserting member, and connected with the rotation mechanism to enable the modeling barrel to tightly press the tension spring so that the candle inserting supporting plates are in folded states; a control panel, a light emitting diode (LED) lamp, a music player and an automatic power switch are arranged in the modeling barrel, wherein the LED lamp is installed on the control panel, the control panel is respectively connected with the music player and the automatic power switch, and a power interrupting inserting sheet is arranged on the fixed holder. The flowering process-modeling candle is simple in structure, low in manufacture cost, safe in usage, complete in functions, and good in usage effect.

The invention discloses a method for analyzing a blue light hazard and a rhythm effect according to a color coordinate Z value of a light source. The method comprises the following steps of firstly, obtaining a color coordinate Z value of a 1931 CIE-XYZ standard colorimetric system according to spectral distribution data of a visible spectrum of 380-780 nm of a tested light source; respectively computing a blue light hazard factor and a rhythm factor of the tested light source according to (formula); and finally, judging whether biological safety of the tested light source is qualified or notby taking more than 10% of the blue light hazard factor and the rhythm factor of the candlelight of a common white candle as safety thresholds (the blue light hazard factor of the candlelight is (formula) and the rhythm factor is (formula)), and giving a percentage exceeding the safety thresholds when the biological safety is unqualified. The invention provides a simplified calculation method forthe blue light hazard factor and the rhythm factor of the light source and the safety thresholds of the two factors, the operation is relatively simple, and the physical significance is clear.

The invention provides a light emitting apparatus. The light emitting apparatus includes: a light source; an electronic driver for driving the light source to emit light; a light beam shaping elementused for shaping a light beam of light emitted by the light source; a beam angle adjustment mechanism configured to change a positional relationship between the light source and the beam shaping element; and a sensor configured to provide a signal indicative of a setting of the beam angle adjustment mechanism. The electronic driver is configured to adjust the luminous flux emitted by the light source according to a signal provided by the sensor. The light emitting apparatus can keep the candlelight power of the central light beam of the emitted light constant when the angle of the light beam is changed.