Abstract:
A system for measuring light intensity of a specific location and wirelessly transferring the light intensity data contains at least one light intensity sensing assembly and a computing device. The light intensity data is recorded by the light intensity sensing assembly and is wirelessly transferred to the computing device. The light intensity sensing assembly contains a dome lens, a photocell, a processing unit, a wireless data-transferring module, and a portable power source. The photocell is centrally mounted within the dome lens in order to receive a maximum amount of light. The photocell is electronically connected to the processing unit. In order to transmit the light intensity data, the processing unit is electronically connected to the wireless data transfer module. The photocell, the processing unit, and the wireless data-transferring module are powered by the portable power source.
Abstract:
Fluctuation frequency (F) of an ambient light (S) is identified by: A) specifying first frequency (F1) and second frequency (F2), higher than said first frequency; B) measuring an optical power of the ambient light with a signal receiver (2) over a measuring time interval (Ti) during a total measuring time (T), which is shorter than or equal to a first cycle duration (P1) belonging to the first frequency; C) detecting the optical power of the ambient light in a time series over the total measuring time; D) determining at least one detection feature for identifying the fluctuation frequency by evaluating the time series; and E) identifying the fluctuation frequency of the ambient light as the first frequency or as the second frequency by means of the at least one detection feature.
Abstract:
Electronic devices may include light sensors. The light sensors may include alignment features. The light sensors may be optically aligned with an aperture in an opaque structure. The opaque structure may be formed from an opaque material or a transparent material with an opaque coating. The light sensor may be mounted in a support structure that has been optically aligned with the aperture. The light sensor or the support structure may include extended portions that are transparent to ultraviolet light. Ultraviolet light may be transmitted through the extended portions to cure adhesive that attaches the light sensor or the support structure to the opaque structure. The light sensor may be optically aligned with the aperture by viewing the aperture through an opening in the support structure, by viewing the alignment features on the light sensor through the aperture or by gathering alignment data using the light sensor during alignment operations.
Abstract:
An integrated proximity and ambient light sensor assembly includes an emitter of an IR proximity signal, and a detector configured to detect the IR proximity signal from the emitter when the apparatus is sensing proximity, and to detect ambient light when the apparatus is sensing ambient light. The assembly includes an IR cut filter that has a film disposed over the detector that rejects IR light but passes visible light to the detector, and an opening in the film centered over a midpoint of the detector that passes IR and visible light to the detector. The opening allows IR light to reach the detector from within a narrow angle, but absorbs undesirable emitted IR light that is reflected by oily build-up or “smudge” left on a cover of the device. The film allows visible light to pass for a wider angle to better determine average ambient light.
Abstract:
Eyewear having radiation monitoring capability is disclosed. Radiation, such as ultraviolet (UV) radiation, infrared (IR) radiation or light, can be measured by a detector. The measured radiation can then be used in providing radiation-related information to a user of the eyewear. Advantageously, the user of the eyewear is able to easily monitor their exposure to radiation.
Abstract:
Eyewear having radiation monitoring capability is disclosed. Radiation, such as ultraviolet (UV) radiation, infrared (IR) radiation or light, can be measured by a detector. The measured radiation can then be used in providing radiation-related information to a user of the eyewear. Advantageously, the user of the eyewear is able to easily monitor their exposure to radiation.
Abstract:
A portable traffic signal photometer is capable of rapidly and effectively measuring the intensity of light emanating from a traffic signal light. The photometer includes a housing member with a circular front opening for engagement with the lens of a traffic signal light. The photometer is pressed against the lens, and the light emanating from the traffic signal light is directed through an optical filter located inside the housing, which permits light from the traffic signal light emanating at a predetermined downward angle to pass through it. The light from the filter is directed onto a light-sensitive device, which produces an output signal proportional to the intensity of the light emitted by the traffic signal lens. Additional light-responsive photocells are provided to produce signals indicative of the respective color of the traffic signal light being measured by the photometer, and the composite of the color and the light intensity is used to produce a display which permits the user to determine whether the traffic signal light is properly operating within its designed specifications.
Abstract:
A hand held device for measurement of radiation includes a sensor unit and digital processing unit between the sensor unit and a digital display unit. The sensor unit together with a signal processing unit and the digital display unit are accommodated in a common housing, and a position-dependent switch together with a switchable coding circuit are provided, by means of which the digital display unit may be switched so that it can be read in a position reversed by 180.degree. in a plane thereof.
Abstract:
An ultraviolet radiation dosimeter is to be employed by a person the skin of whom has been protected by a substance tending to inhibit the transmission of the radiation therethrough and which substance has a predetermined value of inhibition. Disposed to the radiation is a sensor that develops a signal in correspondence to the level of the radiation. Responding to that signal is a processor which accumulates a representation of the magnitude of the signal as effectively integrated with an elapsed time of exposure of the sensor to the radiation. An indication of the degree of the accumulation is yielded in response to the representation of the magnitude. The value of inhibition is used in order selectively to adjust in correspondence thereto the determination of the degree at which the indication is yielded. Both analog and digital circuitry are presented, along with variations and additions such as also adjusting response in accordance with the skin type of the user.