SCANNING DISPLAY DEVICE AND SCANNING DISPLAY SYSTEM

• Main Author: IWASHINA SHINYA
• Format: Patent
• Language: English; Japanese
• Published: 27.02.2020
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; TRANSPORTING; VEHICLES IN GENERAL

To provide a scanning display device and a scanning display system which can suppress generation of an uneven luminance in a displayed image.SOLUTION: A scanning display device 1 includes a light source 2, a light collecting unit 6, a light scanning unit 3, and a light diffusion unit 4. The light diffusion unit 4 is formed so that the arrangement pitch is a value set according to the relation of P≥(4λL)/(πM), in which λ denotes the wavelength of a laser light L1, M denotes the effective opening diameter of the light scanning unit 3, L denotes the distance between the light scanning unit 3 and the light diffusion unit 4, and P denotes the arrangement pitch of a plurality of light diffusion channels 4a in the light diffusion unit 4. The distance between the light scanning unit 3 and the light diffusion unit 4 is longer than the distance between the light collecting unit 6 and the light scanning unit 3.SELECTED DRAWING: Figure 2 【課題】表示されたイメージに輝度むらが生じるのを抑制することができる走査型表示装置及び走査型表示システムを提供する。【解決手段】走査型表示装置１は、光源２と、集光部６と、光走査部３と、光拡散部４と、を備える。レーザ光Ｌ１の波長をλとし、光走査部３の有効開口径をＭとし、光走査部３から光拡散部４までの距離をＬとし、光拡散部４における複数の光拡散チャネル４ａの配列ピッチをＰとすると、光拡散部４は、配列ピッチがＰ≧（４λＬ）／（πＭ）に基づいて設定された値となるように、構成されている。光走査部３から光拡散部４までの距離は、集光部６から光走査部３までの距離よりも長い。【選択図】図２