Optical fixing device, light source device, and projection equipment

A light source device, comprising a light source queue, a condensing system, a third reflecting mirror, and a wavelength conversion apparatus, the wavelength conversion apparatus comprising a color wheel and a driving apparatus, wherein:

• the light source queue is formed with a plurality of light sources arranged in a straight line;
• the condensing system is located in a light exit direction of the light source queue and condenses light emitted from the light source queue onto the third reflecting mirror;
• the third reflecting mirror reflects the condensed light to the color wheel;
• the color wheel generates excited light after being excited by the light reflected by the third reflecting mirror;
• the driving apparatus comprises a driving part and a rotation shaft, wherein the rotation shaft is fixedly connected to the color wheel, and the driving part drives the rotation shaft to rotate, so as to drive the color wheel to rotate;
• and
• the rotation shaft of the driving apparatus is parallel to the light source queue.

A light source device, comprising:

• a light source queue, formed by a plurality of light sources arranged in a straight line, wherein the light source queue comprises a first light source and a second light source, the first light source emitting first light and the second light source emitting second light;
• a first light combination element and a second light combination element, the first light combination element having a characteristic of reflecting the first light, and the second light combination element having a characteristic of transmitting the first light and reflecting the second light;
• the second light combination element being arranged on an emission light path of at least one of the first light sources in the middle of the light source queue, and transmitting the first light emitted from the at least one of the first light sources to a condenser lens;
• the first light combination element and the second light combination element being cross-arranged, and the first light combination element being arranged between two emission light paths of light sources in the light source queue, without blocking the light emission of the light source queue;
• a first reflecting mirror, arranged at first sides of the first light combination element and the second light combination element, and the first reflecting mirror and the first light combination element are located at the same side of the second light combination element, and used for reflecting first light emitted from at least one first light source located at a first end of the light source queue onto the first light combination element, the first light combination element reflecting the first light onto the condenser lens;
• a second reflecting mirror, arranged at second sides of the first light combination element and the second light combination element, and used for reflecting second light emitted from at least one second light source located at a second end of the light source queue onto the second light combination element, the second light combination element reflecting the second light onto the condenser lens;
• and
• the condenser lens used for condensing the light incident thereon.