68 results about "Low intensity light" patented technology

Disclosed is a system and method for treatment of cells and, in particular, visual pathway disorders. More particularly, the disclosed invention is directed toward the photomodulation and/or photorejuvenation of retinal epithelial cells, to treat a variety of vision disorders. The process of treating retinal cells to reduce or reverse the effects of visual pathway disorders employs a narrowband source of multichromatic light applied to the retinal cells to deliver a very low energy fluence.

The invention relates to the use of low intensity light therapy for the treatment of various medical conditions, either alone, or in combination with a second procedure.

The present invention is directed to an infrared light assembly (10, 30, 80, 90). A preferred embodiment of the light assembly (10, 30, 80, 90) may be used on aircraft or other vehicles for landing, taxi mode, or search operations. The light assembly (10, 30, 80, 90) preferably only requires about 10 to 20 watts of power. The light assembly (10, 30, 80, 90) may include a housing (12, 32, 82), a base (14, 34, 50), an IR diode (16, 36, 60), and an aspheric lens (18, 38). The base (14, 34, 50) is preferably connected to the bottom portion (22) of the housing(12, 32, 82), and the aspheric lens (18, 38) is preferably connected to the top portion (24) of the housing (12, 32, 82). The IR diode (16, 36, 60) may be mounted on the base (14, 34, 50). The housing (12, 32, 82) and the base (14, 34, 50) preferably have high thermal conductivity, and they preferably act as heat sinks. In addition, a plurality of thermal electric coolers (20, 40, 70) may be positioned between the base (14, 34, 50) and the IR diode (16, 36, 60) for additional dissipation of the heat generated by the light assembly. The IR diode (16, 36, 60) is adapted to emit infrared light. The light assembly (10, 30, 80, 90) preferably maintains a substantially constant operating temperature so that the peak emission of the IR diode (16, 36, 60) is substantially maintained. The infrared light may radiate through the hollow of the housing(12, 32, 82) to the aspheric lens (18, 38). The aspheric lens (18, 38) is preferably adapted to collimate infrared light. As a result, the light assembly (10, 30, 80, 90) may provide a collimated beam of infrared light having a NVIS radiant intensity greater than about 2.

The present invention relates to a phantom device that simplifies usage and testing of a low intensity light imaging system. The phantom device includes a body and a light source internal to the body. The body comprises an optically selective material designed to at least partially resemble the optical behavior of mammalian tissue. Imaging the light source or phantom device may incorporate known properties of the optically selective material. Testing methods described herein assess the performance of a low-level light imaging system (such as the software) by processing light output by the phantom device and comparing the output against known results. The assessment builds a digital representation of the light source or test device and compares one or more components of the digital representation against one or more known properties for the light source or the test device.

Apparatus for optically testing LEDs or other light-emitting components in a wide variety of test environments and to the degree necessary pertinent to the type(s) of faults encountered. In one embodiment, the present invention includes one or more fiber optic probes coupled to a multi-mode sensor unit, incorporating a photo-sensor coupled to a processor which may be programmed to provide a variety of test modes including simple on/off testing, color determination, color matching, wavelength and relative intensity among others. An extremely high sensitivity test mode is also provided for testing LEDs which emit very low intensity light in the micro-candela range in products such as automobile/aircraft cockpit control panel lighted push-buttons for night-time viewing. The multi-mode sensor unit operates over a wide dynamic range and is capable of accurately testing LEDs that may be very dim to very bright without adjustment. In another embodiment, a voltage protection circuit is provided which enables the multi-mode sensor unit to safely operate from a supply voltage in the range of approximately 5 volts DC to approximately 40 volts DC while protecting the multi-mode sensor unit from a potentially damaging overvoltage condition. The voltage protection circuit also protects the multi-mode sensor unit against potential damage caused by reverse polarity voltage spikes, or accidental steady-state reverse polarity voltages.

Techniques for elevating CD34+ cell level in peripheral blood using light are disclosed herein. In one example, a light generating device is positioned to a body part of a patient, and a beam of light generated by the light generating device is directed to the body part of the patient to increase CD34+ cell level in the peripheral blood of the patient. In various embodiments, the beam of light is direct to a body part of the patient that is CD34+ stem/progenitor cell and/or precursor cell that give rise to CD34+ stem/progenitor cell rich. In various embodiments, the body part is the abdomen of the patient rich in adipose tissue. In various embodiments, the light beam has one or more wavelength in the range of 400 to 1300 nm. In various embodiments, the light beam is a low intensity light beam of generated by a power of 1-12 mW.

Under the present invention, a warning unit having a light source (e.g., a laser) is mounted on an emergency vehicle. The light source first emits a low intensity light beam (e.g., an infrared light beam) to scan an area in front of the emergency vehicle. The scan is used to detect one or more objects having a height to width ratio exceeding a predetermined threshold. Specifically, the scan is used to detect one or more tall, narrow objects such as poles, sign posts, etc., while ignoring other objects such as people, animals, etc. Once any applicable objects are detected, a second, higher intensity light beam is emitted to illuminate the detected objects with a predetermined indicia. The predetermined indicia can be observed by other motorists and indicates to them a direction of origin of the emergency vehicle.

The invention relates to the electronic technical field, and discloses a control circuit for light-compensation intensity. The control circuit for the light-compensation intensity comprises a processor, a light ray sensor, an electronic switch, a light-compensation lamp and a current-limiting circuit, wherein the light ray sensor is used for sensing the light ray attribute of the ambient light and outputs the sensed light ray attribute to the processor; and the processor is used for obtaining the light-compensation intensity of the light-compensation lamp according to the light ray attribute of the ambient light sensed by the light ray sensor, and controls the current-limiting circuit to adjust the current value passing through the light-compensation lamp according to the light-compensation intensity when the electronic switch is controlled to lighten the light-compensation lamp. The invention also discloses a control method for the light-compensation intensity. Compared with the prior art, the embodiments of the invention have the following beneficial effects: when the light-compensation lamp is lightened, the current value passing through the light-compensation lamp can be adjusted according to the intensity of the ambient light, so that the light-compensation lamp can realize high-intensity light compensation in a high-light environment and low-intensity light compensation in a low-light environment; and therefore, the power consumption of the light-compensation lamp can be lowered, and the light-compensation effect can be improved.

The invention described herein provides systems and methods for multi-modal imaging with light and a second form of imaging. Light imaging involves the capture of low intensity light from a light-emitting object. A camera obtains a two-dimensional spatial distribution of the light emitted from the surface of the subject. Software operated by a computer in communication with the camera may then convert two-dimensional spatial distribution data from one or more images into a three-dimensional spatial representation. The second imaging mode may include any imaging technique that compliments light imaging. Examples include magnetic resonance imaging (MRI) and computer topography (CT). An object handling system moves the object to be imaged between the light imaging system and the second imaging system, and is configured to interface with each system.

A vehicle lighting system is disclosed. The lighting system comprises a group of light sources having a plurality of portions. Each of the portions has a proximity sensor configured to communicate a signal to control a portion of the plurality of portions. A controller is in communication with the light sources and the proximity sensors. The controller is operable to selectively activate a first portion of the grouping of light sources in response to a first proximity detection, and activate the plurality of portions in response to second proximity detection.