106 results about "Red laser light" patented technology

A 2-dimensional beam scan unit (2) reflects emission beams from a red laser light source (1a), a green laser light source (1b) and a blue laser light source (1c) and scans in a 2-dimensional direction. Diffusion plates (3a, 3b, 3c) diffuse the respective light beams scanned in the 2-dimensional direction to introduce them to corresponding spatial light modulation elements (5a, 5b, 5c). The respective spatial light modulation elements (5a, 5b, 5c) modulate the respective lights in accordance with video signals of the respective colors. A dichroic prism (6) multiplexes the lights of the three colors after the modulation and introduces the multiplexed lights to a projection lens (7) so that a color image is displayed on a screen (8). Since the 2-dimensional light emitted from the beam scan unit is diffused to illuminate the spatial light modulation element, it is possible to change the optical axis of the beam emerging from the light diffusion member for irradiating the spatial light modulation element moment by moment, thereby effectively suppressing speckle noise.

A method for treating a patient with laser energy to improve hearing loss. The method involves applying laser energy to the patient's spine, preferably by sweeping a linear laser beam over the patient's skin. The method may alternatively include applying laser energy to the patient's jaw, skull, ears, or a combination thereof. The laser device used for treating the patient is preferably a hand-held probe that moves freely relative to the patient's skin and can generate more than one wavelength of laser energy. In the preferred treatment, the patient is treated with a hand-held probe that emits two laser beams, one laser beam producing a pulsed line of red laser light and the other producing a pulsed line of green laser light. In the preferred embodiment, the patient's upper back, cervical vertebrae, cranial nerves, and temporomandibular joints are treated with laser energy for a total of less than 20 minutes in a single treatment.

The invention discloses a double-color laser light source which comprises a blue laser and a red laser which emit blue laser light and red laser light respectively; and a fluorescent wheel, the surface of which is coated with green fluorescent powders, wherein the green fluorescent powders emit green fluorescence when excited by the blue laser light. The double-color laser light source also comprises a speckle dissipation system. The speckle dissipation system comprises a first diffusion portion which is controlled to rotate, is arranged in a beam shaping optical path of the blue laser light and red laser light and is used for diffusing the blue laser light and the red laser light; and a second diffusion portion which is controlled to rotate, is arranged before a blue laser light, red laser light and green fluorescence incident light bar, and is used for at least penetrating the blue laser light and the red laser light sequentially and forming blue light and red light output. The double-color laser light source can effectively reduce speckle effect and improve display quality of projected images.

A light source apparatus includes: an excitation light source; a phosphor having, as a main fluorescence wavelength region, wavelengths of green excited by excitation light emitted from the excitation light source; a red laser light source that oscillates in a red wavelength region; an optical multiplexer that multiplexes fluorescence emitted from the phosphor and red laser light emitted from the red laser light source; and color demultiplexing optics that demultiplexes the multiplexed light into two light beams. A cutoff wavelength of the color demultiplexing optics is a wavelength in the wavelength region of fluorescence, and is shorter than the red wavelength region.

A projector is provided which includes a light source unit which can reduce the numbers of lenses and mirrors and which can control quantity of light of each color.

A light source unit of the invention includes a laser light source unit 70 which has a plurality of red laser elements 71R and a plurality of blue laser elements 71B as two types of laser emitting elements 71 which emit light of wavelength bands which are different from each other and in which the pluralities of red and blue laser emitting elements 71R, 71B are arranged in a planar fashion, a diffusing unit which is disposed on an optical path of light emitted from the laser light source unit 70 to diffuse the light emitted from the laser light source unit 70, and a light source control unit for controlling the illumination of the laser emitting elements 71R, 71B.

The invention discloses a double-color laser light source which comprises a blue laser and a red laser which emit blue laser light and red laser light respectively; and a fluorescent wheel, the surface of which is coated with green fluorescent powders, wherein the green fluorescent powders emit green fluorescence when excited by the blue laser light. The double-color laser light source also comprises a speckle dissipation system. The speckle dissipation system comprises a first diffusion portion which is fixedly arranged in a beam shaping optical path of the blue laser light and red laser light and is used for diffusing the blue laser light and the red laser light; and a second diffusion portion which is controlled to rotate, is arranged before a blue laser light, red laser light and green fluorescence incident light bar, and is used for at least penetrating the blue laser light and the red laser light sequentially and forming blue light and red light output. The double-color laser light source can effectively reduce speckle effect and improve display quality of projected images.

A display device includes a red laser light source which irradiates light in wavelength range of 636 nm to 645 nm; and a light projector which modulates and project the light on screen. With a display device according to embodiments of the present disclosure, the projected image may be by using three laser light sources which irradiate red, green and blue light each of which wavelengths is limited to 636 nm to 645 nm, 520 nm to 532 nm or 430 nm to 454 nm.

The invention discloses an illuminating light source device and a sampling and controlling method. The illuminating light source device comprises a laser component, a coupling mirror and a single-core light-guide fiber. The laser component is used for emitting mixed light including red laser light, green laser light, blue laser light and yellow laser light, output intensity of the laser light can be adjusted, and accordingly the color of illuminating light can be adjusted; the coupling mirror is located on a light path of the mixed light and is used for refracting and collecting the mixed light; and one end of the single-core light-guide fiber is located at a focus of the coupling mirror while the other end of the single-core light-guide fiber is used for being connected with an endoscope or an inner mirror. The illuminating light source device not only has the illuminating intensity identical to that of a xenon lamp or a halogen lamp, but also can be prevented from generating high heat due to the fact that the light is mixed with infrared rays or ultraviolet rays. In addition, the mixed illuminating light is transmitted to the endoscope or the inner mirror via the single-core light-guide fiber, and furthermore, the single-core light-guide fiber is small in volume and convenient in use, and is soft.

An improved laser device that can simultaneously provide low level laser therapy treatments to the sympathetic and parasympathetic nervous systems. The device enables laser light of different colors, pulse frequencies, beam shapes and spot sizes to be applied externally to a patient's body. The device includes multiple laser sources. In the preferred embodiment, and hand-held wand emits two separate laser beams, one laser beam producing a pulsed line of red laser light and the other producing a pulsed line of green laser light.

A light source device capable of improve energy efficiency is provided. A light source device includes a yellow phosphor that emits yellow fluorescence excited by exciting light, a red laser light source that emits red laser light, a first light combining unit that generates first composite light by combining the emitted yellow fluorescence with the emitted red laser light, a blue laser light source that emits blue laser light, and a second light combining unit that generates second composite light by combining the combined first composite light with the emitted blue laser light.

An optical assembly that installs red, green, blue laser diodes (LDs) within a single package is disclosed. The LDs are mounted on a base via respective sub-mounts. Light emitted from the LDs is collimated by collimating lenses and multiplexed by two wavelength filters so as to align optical axes of the light. The multiplexed light has an axis substantially leveled with the axes of the red, green, and blue light measured from the top of the base.

A method of despeckling light that includes mixing high-speckle far-red laser light with low-speckle green laser light in amounts selected to achieve a desired color point in a digital image. The far-red laser light may be red laser diodes with wavelengths in the range of 640 to 680 nm. The green laser light may include stimulated-Raman-scattering light from an optical fiber. The desired color point may be DCI red or Rec. 709 red.

Red light emitted from a red laser light source, green light emitted from a green laser light source and blue light emitted from a blue laser light source are incident on a first disc body of a color wheel, are transmitted or reflected in conformity with the colors of the lights in wavelength selecting regions of a second disc body every time the color wheel performs a predetermined rotation. AS being reflected by the first disc body, the lights are divided into different positions to be emitted from the color wheel and irradiated to irradiation regions successively switched by an upward or downward reciprocal movement of a mirror group.

The laser aligner is connected to the objective tube of the self collimator in sliding mode and features its coaxial stepped tube including large-diameter section as the objective tube connecting and positioning sleeve and with locking screw, small-diameter section holding semiconductor laser with trimming screw and miniature laser switch on the wall and laser sleeve with ejaculating hole coaxial with the sleeve. The quick alignment method includes installing the sleeve of the laser aligner onto the objective tube of the self collimator, turning on the laser, and regulating the relative position between the self collimator and measured plane for the reflected red laser beam to return in the original path to complete the quick alignment. The laser collimator is simple in structure, quick in alignment method and easy to use, and makes it possible to raise the use efficiency and expand the application range.

The invention provides a light source system and a projection device. The light source system comprises a first light source comprising a first blue laser light source for emitting first blue laser light, a red laser light source for emitting red laser light and a green laser light source for emitting green laser light. The light source system also comprises a second light source comprising a second blue laser light source, a wavelength conversion element for converting second blue laser light into stimulated light, and a control device for controlling the switching of the first blue laser light source, the red laser light source, the green laser light source and the second blue laser light source such that the first blue laser light, the red laser light and the green laser light are combined to form light source light or the first blue laser light and the stimulated light are combined to form the light source light. The light source system and the projection device with the light source system can achieve dynamic color gamut adjustment.

A first light output unit integrally has a first light source and a first prism, a second light output unit integrally has a second light source and a second prism, and a third light output unit integrally has a third light source and a third prism. A first surface of the first prism and a second surface of the second prism are adhered together by an adhesive with a first film located therebetween, and first film passes green laser light and reflects blue laser light. A third surface of the second prism and a fourth surface of the third prism are adhered together by an adhesive with a second film located therebetween, and second film passes the green laser light and the blue laser light, and reflects red laser light.

The embodiment of the invention relates to a projection light source and a projection system thereof. The projection light source comprises a blue laser light source, a red laser light source, a rotating fluorescent color wheel, a condensing lens, a first light split mirror and a red laser reflecting mirror, wherein an annular fluorescent layer and an annular reflecting diffusion layer are arranged adjacent to a working surface of the fluorescent color wheel, the blue laser light source, the red laser light source, the condensing lens, the first light split mirror and the red laser reflectingmirror are all arranged at one side of the working surface of the rotating fluorescent color wheel, the annular fluorescent layer of the rotating fluorescent color wheel, the condensing lens, the first light split mirror and the blue laser light source are arranged on a first reference line, the red laser reflecting mirror and the first light split mirror are arranged on a second reference line, the red laser light source is arranged in an off-axis way, and a first off-axis angle a is formed between a red laser beam emitted from the red laser light source and the first reference line. By the implementation mode, the color gamut of the projection light source can be improved under the condition of no influence on brightness of the light source, and meanwhile, the projection light source iscompact in structure.

The invention discloses a novel road fork management system, and the system comprises a system background control center, a video collection system in remote connection with the system background control center, and traffic lights in remote connection with the system background control center. The video collection system comprises a plurality of monitoring probes, and the monitoring probes respectively irradiate vehicles running at different forks of a road. The traffic lights comprise a plurality of steering lights which are provided with laser heads, wherein the laser heads projects steering laser identifications to the road surface. The video collection system and the traffic lights are respectively disposed on a traffic light suspension arm, and the traffic light suspension arm extends to be fixedly connected to a signal lamp pole in a vertical manner. The interior of the signal lamp pole is provided with a laser head, and the laser head irradiates zebra crossings on the road through a through hole on the wall of the signal lamp pole, thereby forming red laser light strips perpendicular to the zebra crossings. The system can indicate the running direction and warning parking distance at the fork of the road visually and clearly, reduces the workload of traffic police, and reduces the occurrence rate of traffic accidents and congestion at the road segments with a plurality of forks.