The Study in Mulit-Module LED Surgical Light by Design of Focus Mechanism of Tunable Angle

[[abstract]]本研究利用實驗室所設計的單反射模組，來進行多模組 LED 手術 燈具可連動聚光機構設計，透過機構旋轉作動來達成可調單反射模組 的傾斜角度，目的是為了更精準的將光線聚焦在要求的照明區域上， 操作人員只要調整機構的輸入，便能透過旋轉連動所有的單反射模組 傾斜成相同角度，其傾斜角度會對應接收距離改變。設計燈具到聚光 範圍的高度 800mm~1,200mm，計算出機構傾斜角度變化為 13~9 度， 其兩者變化大致呈線性關係。經由光線照射在同一區域裡面，能量會 堆疊累加，可提高手術燈具的照度值，符合手術法規 IEC 60601-2-41 的照度規範，並且多個單反射模組的聚光也能提高無影度，使手術時 有足夠的亮度，即使光線被操作人員遮蔽一部份時，不會產生明顯的 影子，讓手術能順利進行。本研究利用光學模擬軟體 LightTools 進行 LED 單反射模組的光斑與照度模擬，並且進行聚光機構在不同接收距 離與傾斜角度下對於光斑與照度的變化。 關鍵字 : 單反射模組、LED 手術燈、聚光機構、機構設計[[abstract]]This study used of Lab’s single reflector module for focus mechanism design of multi-module of LED surgical light. Through mechanism rotation motion to achieve tunable tilt angle of single reflector module, the purpose is overlapping the light on the same illumination area precisely. Operator just adjust mechanism input, that would tilted the same angler of all reflector by mechanism rotation motion, it angle will change with the receiving distance. The design mechanism is abele to adjust receiving altitude is 800 to 1,200 mm. The tilt angle of the mechanism calculation of variation angle is 13 to 9 degrees, it variation relationship with adjustment altitude is linear roughly. Through energy accumulated, could increased the illumination of surgical lighting to meet IEC 60601-2-41 surgical regulations of illumination standard and multi-reflector focus light would enhanced the shadow dilution. The surgery process will be sufficient iii brightness, even if the light is obscured a part by operator, it will not produce shadow, so that surgery can be carried out smoothly. This study used LightTools optical simulation software to simulate the light pattern and illumination of LED single reflector module. The study also analysis variation of light pattern and illumination of focusing mechanism in different receiving altitude and tilt angle