To perform display without degrading the light emission efficiency of each individual, while minimizing correction man-hours in a process, in a head-up display using a laser light source affected by a light-quantity variation caused by temperature.SOLUTION: A video display device includes an acquisition part for acquiring the temperature of the laser light source, a storage part for previously storing a coefficient for obtaining a maximum luminance now capable of being output from the present temperature, a calculation part for calculating the maximum luminance now capable of being output on the basis of the temperature acquired by the acquisition part and the coefficient stored in the storage part, and a video display part for displaying a video by using the laser light source on the basis of the calculation result of the calculation part.SELECTED DRAWING: Figure 4
【課題】温度による光量変動の影響を受けるレーザ光源を用いたヘッドアップディスプレイにおいて、工程における補正工数を最小にしつつ、個体ごとの発光効率を損なわず表示を行えるようにする。【解決手段】映像表示装置は、レーザ光源の温度を取得する取得部と、現在温度から現在出力可能な最大輝度を得るための係数を予め記憶している記憶部と、取得部によって取得された温度と、記憶部に記憶されている係数とに基づいて、現在出力可能な最大輝度を算出する算出部と、算出部の算出結果に基づいて、レーザ光源を用いて映像を表示する映像表示部と、を備える。【選択図】図4
VIDEO DISPLAY DEVICE, HEAD-UP DISPLAY DEVICE, AND MOVING BODY
映像表示装置、ヘッドアップディスプレイ装置及び移動体
2021-09-27
Patent
Electronic Resource
Japanese
IPC: | G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM , Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / H01S Vorrichtungen, die stimulierte Emission verwenden , DEVICES USING STIMULATED EMISSION / G09F DISPLAYING , Anzeigewesen / G09G Anordnungen oder Schaltungen zur Steuerung oder Regelung von Anzeigevorrichtungen mit statischen Mitteln zur Darstellung veränderlicher Informationen , ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION |
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