Laser light-source device and projector with the same
A laser light source and laser technology, applied in lasers, laser components, optics, etc., can solve the problems of multiple bands, low conversion efficiency, wide excitation wavelength range, etc., and achieve the effect of reducing the number of components and improving conversion efficiency
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no. 1 Embodiment approach
[0058] (main constitution of rear projection type projector)
[0059] FIG. 1 is a side sectional view of a rear projection projector as a projector in the present invention. In FIG. 1 , a rear-projection projector 1 includes a casing 2 , a projection unit 3 , a control unit 4 , a mirror 5 , and a transmissive screen 9 .
[0060] The casing 2 is configured in a box shape with the rear side (the right side in FIG. 1 ) inclined, and accommodates and arranges the projection unit 3 , the control unit 4 and the reflection mirror 5 inside. In addition, the specific illustration is omitted, and inside the casing 2, in addition to the projection unit 3, the control unit 4, and the mirror 5, a power supply for supplying electric power to each component of the rear projection projector 1 is arranged. unit, a cooling unit for cooling the inside of the rear projection projector 1, a sound output unit for outputting sound, and the like.
[0061] In addition, on the front side (left side i...
no. 2 Embodiment approach
[0117] FIG. 7 is a schematic diagram showing a schematic configuration of a laser light source device in a second embodiment. The second embodiment is different from the configuration of the laser light source device 31 in the first embodiment, except that instead of the band-pass filter multilayer film 312B formed on the incident surface of the wavelength conversion element 312, a band-pass filter 412 is provided. Other than that, it has the same basic configuration as that of the aforementioned first embodiment. Therefore, the same reference numerals are attached to the same components as those in the first embodiment, and descriptions thereof are omitted or simplified. In addition, the same applies to the operation of each component, and its detailed description is also omitted or simplified.
[0118] (Structure of light source device)
[0119] In FIG. 7 , a laser light source device 41 includes a laser light source 311 for exciting laser light, a bandpass filter 412 , an...
no. 3 Embodiment approach
[0150] FIG. 9 is a schematic diagram showing a schematic configuration of a laser light source device in a third embodiment. The laser light source device 51 of the third embodiment differs from the laser light source device 41 in the second embodiment in configuration except that a multilayer mirror body 515 is arranged instead of the dielectric multilayer film 414C formed on the wavelength conversion element 414. Otherwise, it has the same basic configuration as that of the aforementioned first embodiment and second embodiment. Therefore, the same reference numerals are assigned to the same components as those in the first embodiment and the second embodiment, and descriptions thereof are omitted or simplified. In addition, the same applies to the operation of each component, and its detailed description is also omitted or simplified.
[0151] In FIG. 9, a laser light source device 51 includes a laser light source 311 for exciting laser light, a wavelength conversion elemen...
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