Abstract:
A sun meter having a processor receiving a signal from a photocell. The processor first compares the signal to a first threshold to determine if it is daytime. If it is daytime, the processor then compares the signal to a second threshold to determine if the signal is greater than a value selected to correspond with direct sunlight. If the signal is greater than the second threshold, a counter counts. For each day of use, the amount of time of direct sun is tallied and may be displayed. An average amount of direct sun for a period of days may also be displayed. It is anticipated that a plurality of meters will be utilized in a specific area to determine the specific locations which receive the most direct sunlight and then know what plants will thrive and where to place such plants.
Abstract:
An exposure meter for incident- and reflected-light photometry includes an incident-light receiving section, a finder for reflected-light photometry, an arithmetical element for calculating various exposure values on the basis of photometric results obtained by incident- and reflected-light receiving elements, a finder optical system for displaying information on the exposure values obtained by the arithmetical element in the finder, and a display window provided on an exposure meter body. The incident-light receiving section is constructed so that it is can be mounted to or dismounted from the exposure meter body and allows incident-light photometry and lighting setting photometry. The exposure meter further includes a transmitting unit, mountable in or dismountable from the exposure meter body, in which flashlight is emitted and the amount of flashlight can be adjusted in accordance with the information on the exposure values displayed on the display window.
Abstract:
A composite structure contains crystalline and/or polycrystalline triboluminescent elements distributed therein externally and/or internally, totally and/or regionally. The structure is instrumented with at least one optical fiber which is coupled therewith penetratingly and/or superficially/tangentially. Each optical fiber is exteriorly light transparent/translucent along at least a longitudinal portion thereof which is situate in the vicinity of at least one triboluminescent element. Concomitant with the occurrence of damage in and/or on the structure is the occurrence of mechanical action with respect to at least one triboluminescent element, a consequence of which is the occurrence of triboluminescence which, to at least some degree, passes radially into at least one optical fiber so as to reach the optical fiber's transmissive axial core and thereby be transmitted to remotely located photosensitive equipment. The triboluminescent elements can exist wholely and/or partly in various capacities, e.g., as fiber reinforcement and/or particle reinforcement and/or particle filler.
Abstract:
An illuminance meter is provided to simplify measuring tasks and labor associated with the process of determining the energy level of a radiation used in an exposure apparatus. A wafer-type illuminance meter has an optical sensor fabricated integrally within a dummy wafer, which is made of a thin disk so that it may be handled in a manner similar to a substrate wafer to be imprinted. The illuminance meter is retained on a wafer stage in a manner similar to the substrate wafer so as to be loaded on and unloaded off a number of exposure apparatuses to determine a level of illuminance in the vicinity of the image plane of each exposure apparatus that uses a type of radiation assigned to each exposure apparatus.
Abstract:
Plural photodetectors for receiving light and generating detection signals. A light amount controlling portion is arranged above the photodetectors for controlling an amount of the light to the photodetectors according to an incident angle. A weighting portion for weighting sensitivities of the photodetectors respectively. The sensitivities are weighted to provide a total output characteristic of the weighted detection signals of which magnitude varies according to the incident angle. Weighting is provided by a signal processing circuit by controlling gains, or a translucent film on the photodetectors for controlling transparencies portions above respective photodetectors, or opaque films on the photodetectors for controlling amounts of the light to respective photodetectors. A first function signal may be obtained from a part of photodetectors for an air conditioner and a second function signal may be obtained from all of photodetectors for head lamp on/off controlling. Each coaxially arranged photodetector is divided to provide a semicircle or a semi-ring shape arranged with respect to the front direction of the vehicle to provide orientation angle data to control the air conditioner.
Abstract:
An electrical discharge measurement device for non-contact measurement of an electrical discharge having a discharge magnitude. The electrical discharge causes a corresponding emission of optical radiation. The electrical discharge measurement device has a light-collecting device for forming an image from the optical radiation from the electrical discharge, and an optical filter operatively coupled to the light-collecting device for preferentially selecting wavelengths at which the electrical discharge emits relatively intense optical radiation. An optical detector receives light from the light-collecting device and filtered by the optical filter for converting the filtered light to an electrical signal. An electronic signal-processing device provides, based on the electrical signal, a quantitative discharge measurement related to the magnitude of the electrical discharge.
Abstract:
A UV-Imager system includes a camera. The camera includes a first UV coated mirror and a quartz UV transmittive camera lens. The UV-Imager system also includes a second UV coated mirror coupled to the camera, and an intensifier coupled to the second UV coated mirror.
Abstract:
A crystal having good optical transmission between 260 nm and 280 nm and strongly absorbing at 285 nm and higher, which is nonhydroscopic and stable at temperatures to 250° C. An example of such a crystal is Cerium doped YLiF4. These properties make YLiF4 crystals doped with Ce3+ excellent materials for use as UV filters in the missile early warning spectral band. Optical devices including missile detection systems are also provided.
Abstract:
A light reflector for use with a light source and a light detection mechanism is disclosed. The light source and the light detection mechanism are mounted on a substrate. The light reflector includes a generally hollow portion having a first end and a second end. A reflective surface is disposed upon the first end of the generally hollow portion. The second end is attached to the substrate such that the substrate and the light reflector define a substantially airtight enclosure that is of sufficient size to accommodate therein the light source and the light detection mechanism.
Abstract:
Various methods and apparatus for determining an ability of a region of skin to withstand exposure to harmful radiation, as well as a safe exposure time of the skin to harmful radiation, are disclosed. In various embodiments, methods and apparatus according to the invention provide real time information about the cumulative effects of exposure to harmful radiation, such as ultraviolet radiation, based on an individual's skin type, or “natural” protection factor, and the actual effectiveness of any sunscreen applied on the individual's skin, independently of the labeled sun protection factor (SPF) of the sunscreen. In one embodiment, the invention periodically measures the individual's skin darkness (natural protection factor), the dynamic actual effectiveness of sunscreen, if applied, and a total exposure level of the skin to potentially harmful radiation, and determines a safe exposure time of the skin to the radiation. The safe exposure time may be continuously updated based on changes in skin darkness, sunscreen efficiency, and total exposure level over time.