Image generation apparatus, vehicle, control method of image generation apparatus and storage medium that set an adjustment target value of emission light intensity

Abstract

An image generation apparatus for generating an image includes a light source device; an optical deflection device to deflect laser beam from the light source device to a scanned face arid a light detector; a light quantity adjustment device including a member disposable on a light path of the laser beam between the light source device and the optical deflection device; an emission light intensity adjustment unit to adjust emission light intensity of the light source device; and a controller to set a first adjustment target value of emission light intensity and an adjustment target value of light quantity when laser beam is deflected to the scanned face based on target luminance of the image, and a second adjustment target value of emission light intensity when laser beam is deflected to the light detector based on an adjustment target value of light quantity and detection sensitivity of the light detector.

1 . (canceled) 
     
     
         2 . An image generation apparatus comprising:
 a light source device having at least one laser that emits a laser beam;   an optical deflection device to deflect the laser beam from the light source device to a scanned face to generate an image thereon, and to a light detector; and   processing circuitry configured to set a light quantity of the laser beam when the laser beam is deflected to the light detector by the optical deflection device greater than a light quantity when the laser beam is deflected to the scanned face by the optical deflection device.   
     
     
         3 . The image generation apparatus of  claim 2 , wherein
 the processing circuitry is configured to adjust an emission light intensity of the laser to increase the light quantity of the laser beam emitted to the light detector.   
     
     
         4 . The image generation apparatus of  claim 2 , further comprising:
 a light quantity adjustment device disposable on a light path of the laser beam between the laser and the optical deflection device to adjust the light quantity of the laser beam, wherein   the processing circuitry is configured to set the light quantity of the laser beam emitted to the light detector greater than the light quantity of the laser beam emitted to the scanned face by using the light quantity adjustment device.   
     
     
         5 . The image generation apparatus of  claim 2 , wherein
 the processing circuitry is configured to control the optical deflection device based on detection timing of the laser beam detected by the light detector.   
     
     
         6 . The image generation apparatus of  claim 2 , further comprising:
 a target luminance setting sensor configured to measure illuminance around the image generation apparatus, wherein   the processing circuitry is configured to set the target luminance based on a result of the measured illuminance.   
     
     
         7 . The image generation apparatus of  claim 2 , wherein
 the light quantity adjustment device includes a member having a plurality of light passing portions, each portion having a different transmittance for the laser beam.   
     
     
         8 . The image generation apparatus of  claim 2 , wherein
 the laser is a plurality of lasers, and   the processing circuitry is configured to adjust emission light intensity of the laser beam emitted from the plurality of lasers for each one of the plurality of lasers independently.   
     
     
         9 . The image generation apparatus of  claim 4 , wherein
 the light quantity adjustment device includes a light transmittance variable member that changes transmittance of the laser beam depending on an applied voltage.   
     
     
         10 . The image generation apparatus of  claim 2 , further comprising:
 a light translucent member disposed on a light path of the laser beam deflected by the optical deflection device, the light translucent member having the scanned face.   
     
     
         11 . A vehicle comprising:
 an image generation apparatus that includes
 a light source device having at least one laser that emits a laser beam, 
 an optical deflection device to deflect the laser beam from the light source device to a scanned face to generate an image thereon, and to a light detector, 
 a light translucent member disposed on a light path of the laser beam deflected by the optical deflection device, the light translucent member having the scanned face, and 
 processing circuitry configured to set a light quantity of the laser beam when the laser beam is deflected to the light detector by the optical deflection device greater than a light quantity when the laser beam is deflected to the scanned face by the optical deflection device; and 
 a light translucent window disposed on the light path of the laser beam deflected by the optical deflection device of the image generation apparatus and passed through the light translucent member. 
   
     
     
         12 . A method for an image generation apparatus, the image generation apparatus including a light source device having at least one laser that emits a laser beam, and an optical deflection device to deflect the laser beam from the light source device to a scanned face to generate an image thereon, and to a light detector, the method comprising:
 setting, by processing circuitry of the image generation apparatus, a light quantity of the laser beam when the laser beam is deflected to the light detector by the optical deflection device greater than a light quantity when the laser beam is deflected to the scanned face by the optical deflection device.