TWI748815B - Optical lens device for head-mounted display and its manufacturing method and mold - Google Patents
Optical lens device for head-mounted display and its manufacturing method and mold Download PDFInfo
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Abstract
一種用於頭戴式顯示器的光學透鏡裝置包含一透明支撐基材及一設置於該支撐基材上的菲涅耳透鏡。該菲涅耳透鏡包括一中央透鏡單元及多個稜柱單元。該等稜柱單元相對於該中央透鏡單元由近至遠排列。每一稜柱單元具有一底部、一拔模面及一傾斜面。該底部面向該支撐基材;該拔模面自該底部遠離該支撐基材延伸;該傾斜面自該底部遠離該支撐基材延伸至與該拔模面交會形成一頂端。每一稜柱單元自該底部至該頂端的測量高度不大於75 μm,該底部的寬度不大於250 μm。本發明光學透鏡裝置的厚度薄且不易斷裂可撓曲,不會在視覺上產生干擾線條,也可保持高轉寫率不易使視覺影像產生變形。An optical lens device for a head-mounted display includes a transparent supporting substrate and a Fresnel lens arranged on the supporting substrate. The Fresnel lens includes a central lens unit and a plurality of prism units. The prism units are arranged from near to far with respect to the central lens unit. Each prism unit has a bottom, a draft surface and an inclined surface. The bottom faces the support substrate; the draft surface extends away from the support substrate from the bottom; the inclined surface extends away from the support substrate from the bottom to intersect the draft surface to form a top end. The measuring height of each prism unit from the bottom to the top is not more than 75 μm, and the width of the bottom is not more than 250 μm. The optical lens device of the present invention has a thin thickness, is not easy to be broken and flexed, does not produce visually disturbing lines, and can also maintain a high transfer rate to prevent the visual image from being deformed.
Description
本發明是有關於一種光學透鏡裝置,特別是指一種用於頭戴式顯示器(head-mounted display, HMD)的光學透鏡裝置及其製造方法與模具。The present invention relates to an optical lens device, in particular to an optical lens device used in a head-mounted display (HMD), and a manufacturing method and mold thereof.
一般用於會聚或分散光線的光學透鏡裝置需要使用厚度具有毫米尺度的透鏡,而具有菲涅耳透鏡(Fresnel lens)結構的光學透鏡裝置有助於達成裝置的薄型化。然而,使用具有菲涅耳透鏡結構的光學透鏡裝置於頭戴式顯示器(HMD)時,往往會在人體視覺上產生干擾線條。Generally, an optical lens device for condensing or dispersing light needs to use a lens with a thickness of a millimeter scale, and an optical lens device with a Fresnel lens structure helps to achieve a thinner device. However, when an optical lens device with a Fresnel lens structure is used in a head-mounted display (HMD), interference lines are often generated in human vision.
美國專利US 10359545 B2公開一種用於可頭戴式設備(head-mountable apparatus)的彎曲的菲涅耳透鏡,其藉由基於折射率設置拔模面(draft facet)角度與光線折線路徑一致(congruent),能有效減少視覺上的干擾線條。但其透鏡的彎曲度會受到嚴格的侷限,且其未能避免視覺影像容易產生變形的問題。US patent US 10359545 B2 discloses a curved Fresnel lens used in a head-mountable apparatus. The angle of the draft facet is set based on the refractive index to be consistent with the curved path of the light (congruent). ), which can effectively reduce visual interference lines. However, the curvature of the lens is strictly limited, and it cannot avoid the problem that the visual image is easily deformed.
因此,本發明之第一目的,即在提供一種用於頭戴式顯示器的光學透鏡裝置,可以克服上述先前技術的缺點。Therefore, the first objective of the present invention is to provide an optical lens device for a head-mounted display, which can overcome the above-mentioned shortcomings of the prior art.
於是,本發明用於頭戴式顯示器的光學透鏡裝置包含一透明支撐基材及一設置於該支撐基材上的菲涅耳透鏡。該菲涅耳透鏡包括一中央透鏡單元及多個稜柱單元。該等稜柱單元相對於該中央透鏡單元由近至遠排列。每一稜柱單元具有一底部、一拔模面(draft facet)及一傾斜面(slope facet)。該底部面向該支撐基材;該拔模面自該底部遠離該支撐基材延伸;該傾斜面自該底部遠離該支撐基材延伸至與該拔模面交會形成一頂端(apex)。每一稜柱單元自該底部至該頂端的測量高度不大於75 μm,該底部的寬度不大於250 μm。Therefore, the optical lens device for a head-mounted display of the present invention includes a transparent supporting substrate and a Fresnel lens arranged on the supporting substrate. The Fresnel lens includes a central lens unit and a plurality of prism units. The prism units are arranged from near to far with respect to the central lens unit. Each prism unit has a bottom, a draft facet and a slope facet. The bottom faces the support substrate; the draft surface extends away from the support substrate from the bottom; the inclined surface extends away from the support substrate from the bottom to intersect the draft surface to form an apex. The measuring height of each prism unit from the bottom to the top is not more than 75 μm, and the width of the bottom is not more than 250 μm.
因此,本發明之第二目的,即在提供一種用於頭戴式顯示器的光學透鏡裝置的製造方法,包含: 提供一透明支撐基材; 提供一模具,該模具包括一中央透鏡形成形體及多個相對於該中央透鏡形成形體由近至遠排列的稜柱形成槽。每一稜柱形成槽具有一開口、一底端、一拔模面及一傾斜面。該底端相反於該開口;該拔模面自該開口延伸至該底端;該傾斜面自該開口延伸至該底端以與該拔模面交會。自該開口至該底端的測量深度不大於75 μm,相鄰兩個稜柱形成槽的拔模面間距不大於250 μm; 在該支撐基材及該模具中至少一者上設置一紫外光可固化樹脂; 使該紫外光可固化樹脂以該模具進行模塑; 以紫外光照射該紫外光可固化樹脂以在該支撐基材上形成一菲涅耳透鏡,該菲涅耳透鏡包括一中央透鏡單元及多個稜柱單元;及 使該菲涅耳透鏡脫離該模具。 Therefore, the second objective of the present invention is to provide a method of manufacturing an optical lens device for a head-mounted display, including: Provide a transparent supporting substrate; A mold is provided, and the mold includes a central lens forming body and a plurality of prism forming grooves arranged from near to far relative to the central lens forming body. Each prism forming groove has an opening, a bottom end, a draft surface and an inclined surface. The bottom end is opposite to the opening; the draft surface extends from the opening to the bottom end; the inclined surface extends from the opening to the bottom end to meet the draft surface. The measuring depth from the opening to the bottom end is not more than 75 μm, and the distance between the draft surfaces of the grooves formed by two adjacent prisms is not more than 250 μm; Disposing an ultraviolet curable resin on at least one of the supporting substrate and the mold; Molding the ultraviolet curable resin with the mold; Irradiating the ultraviolet curable resin with ultraviolet light to form a Fresnel lens on the supporting substrate, the Fresnel lens including a central lens unit and a plurality of prism units; and The Fresnel lens is released from the mold.
因此,本發明之第三目的,即在提供一種用於製造頭戴式顯示器的光學透鏡裝置的模具,包含一中央透鏡形成形體及多個稜柱形成槽。該等稜柱形成槽相對於該中央透鏡形成形體由近至遠排列。每一稜柱形成槽具有一開口、一底端、一拔模面及一傾斜面。該底端相反於該開口;該拔模面自該開口延伸至該底端;該傾斜面自該開口延伸至該底端以與該拔模面交會。自該開口至該底端的測量深度不大於75 μm,相鄰兩個稜柱形成槽的拔模面間距不大於250 μm。Therefore, the third object of the present invention is to provide a mold for manufacturing an optical lens device of a head mounted display, which includes a central lens forming body and a plurality of prism forming grooves. The prism forming grooves are arranged from near to far relative to the central lens forming body. Each prism forming groove has an opening, a bottom end, a draft surface and an inclined surface. The bottom end is opposite to the opening; the draft surface extends from the opening to the bottom end; the inclined surface extends from the opening to the bottom end to meet the draft surface. The measuring depth from the opening to the bottom end is not more than 75 μm, and the distance between the draft surfaces of the grooves formed by two adjacent prisms is not more than 250 μm.
本發明之功效在於:該用於頭戴式顯示器的光學透鏡裝置的厚度薄,且不易發生斷裂可撓曲,使用時不會在人體視覺上產生干擾線條,也可保持高轉寫率不易使視覺影像產生變形。The effect of the present invention is that the thickness of the optical lens device for the head-mounted display is thin, and it is not easy to break and bend, and it will not produce interference lines on the human body during use, and it can also maintain a high transfer rate. The visual image is deformed.
在本發明被詳細描述之前,應當注意在以下的說明內容中,類似的元件是以相同的編號來表示。Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers.
以下將就本發明內容進行詳細說明:The content of the present invention will be described in detail below:
本發明用於頭戴式顯示器的光學透鏡裝置包含一透明支撐基材1及一設置於該支撐基材1上的菲涅耳透鏡2。該菲涅耳透鏡2包括一中央透鏡單元21及多個稜柱單元22。該等稜柱單元22相對於該中央透鏡單元21由近至遠排列。每一稜柱單元22具有一底部221、一拔模面222及一傾斜面223。該底部221面向該支撐基材1;該拔模面222自該底部221遠離該支撐基材1延伸;該傾斜面223自該底部221遠離該支撐基材1延伸至與該拔模面222交會形成一頂端224。每一稜柱單元22自該底部221至該頂端224的測量高度不大於75 μm,該底部221的寬度不大於250 μm。The optical lens device for a head-mounted display of the present invention includes a transparent supporting
較佳地,該底部221的寬度範圍為30~200 μm。Preferably, the width of the
較佳地,每一稜柱單元22的高度範圍為2~25 μm。Preferably, the height of each
較佳地,該菲涅耳透鏡2是由一(甲基)丙烯酸系的紫外光可固化樹脂20所製得。Preferably, the Fresnel
較佳地,該支撐基材1是由一選自於聚對苯二甲酸乙二酯(PET)、聚碳酸酯(PC)、聚甲基丙烯酸甲酯(PMMA)或其組合的材料所製得。Preferably, the supporting
較佳地,該支撐基材1的厚度不大於600 μm。更佳地,該支撐基材1的厚度範圍為50~600 μm。Preferably, the thickness of the supporting
較佳地,該支撐基材1是呈一曲率半徑範圍為0.5~15 cm的曲面。Preferably, the supporting
較佳地,每一稜柱單元22的頂端224是呈一曲率半徑不大於2 μm的圓角。Preferably, the
較佳地,每一稜柱單元22的拔模面222與其相鄰的稜柱單元22的傾斜面223交會形成一溝槽底端225,該溝槽底端225呈一曲率半徑不大於2 μm的圓角。Preferably, the
在本發明的部分實施例中,該等稜柱單元22是呈同心圓排列。在本發明的其他實施例中,該等稜柱單元22彼此平行排列。In some embodiments of the present invention, the
較佳地,本發明的光學透鏡裝置還包含一設置於該菲涅耳透鏡2及該支撐基材1中至少一者上的保護膜5。Preferably, the optical lens device of the present invention further includes a
較佳地,該中央透鏡單元21是呈凸面狀或凹面狀。在本發明的實施例中,該中央透鏡單元21是呈凸面狀。Preferably, the
本發明用於頭戴式顯示器的光學透鏡裝置的製造方法,包含:
提供一透明支撐基材1;
提供一模具3,該模具3包括一中央透鏡形成形體31及多個相對於該中央透鏡形成形體31由近至遠排列的稜柱形成槽32。每一稜柱形成槽32具有一開口320、一底端324、一拔模面322及一傾斜面323。該底端324相反於該開口320;該拔模面322自該開口320延伸至該底端324;該傾斜面323自該開口320延伸至該底端324以與該拔模面322交會。自該開口320至該底端324的測量深度不大於75 μm,相鄰兩個稜柱形成槽32的拔模面322間距不大於250 μm;
在該支撐基材1及該模具3中至少一者上設置一紫外光可固化樹脂20;
使該紫外光可固化樹脂20以該模具3進行模塑;
以紫外光4照射該紫外光可固化樹脂20以在該支撐基材1上形成一菲涅耳透鏡2,該菲涅耳透鏡2包括一中央透鏡單元21及多個稜柱單元22;及
使該菲涅耳透鏡2脫離該模具3。
The method for manufacturing an optical lens device for a head-mounted display of the present invention includes:
Provide a transparent supporting
較佳地,相鄰兩個稜柱形成槽32的拔模面322間距範圍為30~200 μm。Preferably, the distance between the
較佳地,每一稜柱形成槽32的深度範圍為2~25 μm。Preferably, the depth of each
較佳地,該菲涅耳透鏡2是由一(甲基)丙烯酸系的紫外光可固化樹脂20所製得。Preferably, the Fresnel
較佳地,該支撐基材1是由一選自於聚對苯二甲酸乙二酯(PET)、聚碳酸酯(PC)、聚甲基丙烯酸甲酯(PMMA)或其組合的材料所製得。Preferably, the supporting
在本發明的部分實施例中,該等稜柱形成槽32是呈同心圓排列。在本發明的其他實施例中,該等稜柱形成槽32彼此平行排列。In some embodiments of the present invention, the
較佳地,本發明的製造方法還包含在該菲涅耳透鏡2及該支撐基材1中至少一者上設置一保護膜5。Preferably, the manufacturing method of the present invention further includes providing a
較佳地,該中央透鏡形成形體31是呈凹面狀或凸面狀。在本發明的實施例中,該中央透鏡形成形體31是呈凹面狀。Preferably, the central
較佳地,該模具3是一滾輪模具3,該中央透鏡形成形體31及該等稜柱形成槽32是設置於該滾輪模具3的表面上。Preferably, the
本發明將就以下實施例來作進一步說明,但應瞭解的是,該等實施例僅為例示說明之用,而不應被解釋為本發明實施之限制。The present invention will be further illustrated with the following examples, but it should be understood that these examples are for illustrative purposes only and should not be construed as limitations to the implementation of the present invention.
參閱圖1,本發明用於頭戴式顯示器的光學透鏡裝置之一第一實施例包含一透明支撐基材1及一設置於該支撐基材1上的菲涅耳透鏡2。該菲涅耳透鏡2包括一呈凸面狀的中央透鏡單元21及多個稜柱單元22。Referring to FIG. 1, a first embodiment of an optical lens device for a head-mounted display of the present invention includes a
該等稜柱單元22相對於該中央透鏡單元21由近至遠呈同心圓排列。每一稜柱單元22具有一底部221、一拔模面222及一傾斜面223。該底部221面向該支撐基材1;該拔模面222自該底部221遠離該支撐基材1延伸;該傾斜面223自該底部221遠離該支撐基材1延伸至與該拔模面222交會形成一頂端224。每一稜柱單元22的拔模面222與其相鄰的稜柱單元22的傾斜面223交會形成一溝槽底端225。在本實施例中,每一稜柱單元22自該底部221至該頂端224的測量高度約為15 μm,該底部221的寬度約為180 μm。The
在本實施例中,該支撐基材1的厚度約為188 μm且是呈一曲率半徑約為0.5 cm的曲面。In this embodiment, the supporting
在本實施例中,每一稜柱單元22的頂端224是呈一曲率半徑約為2 μm的圓角,該溝槽底端225呈一曲率半徑約為2 μm的圓角。In this embodiment, the
參閱圖2、圖4及圖5,該第一實施例的光學透鏡裝置的製造方法之一具體實施例為卷對卷製程(roll-to-roll processing),其包含以下步驟:Referring to FIGS. 2, 4, and 5, a specific embodiment of the manufacturing method of the optical lens device of the first embodiment is roll-to-roll processing, which includes the following steps:
提供一透明PET支撐基材1。在該PET支撐基材1上塗佈一(甲基)丙烯酸系的紫外光可固化樹脂20。在本實施例中,該紫外光可固化樹脂20為購自於喬越實業有限公司(Sil-More Industrial Ltd.)且產品型號為x-8060-1的紫外光可固化樹脂。A transparent
提供一滾輪模具3,該滾輪模具3包括設置於表面上的一呈凹面狀的中央透鏡形成形體31及多個稜柱形成槽32。該等稜柱形成槽32相對於該中央透鏡形成形體31由近至遠呈同心圓排列。每一稜柱形成槽32具有一開口320、一底端324、一拔模面322及一傾斜面323。該底端324相反於該開口320;該拔模面322自該開口320延伸至該底端324;該傾斜面323自該開口320延伸至該底端324以與該拔模面322交會。在本實施例中,自該開口320至該底端324的測量深度範圍為15 μm,相鄰兩個稜柱形成槽32的拔模面322間距範圍為180 μm。每一稜柱形成槽32的底端324是呈一尖角,每一稜柱形成槽32的拔模面322與其相鄰的稜柱形成槽32的傾斜面323交會處呈一尖角。A
使該紫外光可固化樹脂20以該滾輪模具3進行模塑。The ultraviolet
在40℃中以波長為365 nm的紫外光4照射該紫外光可固化樹脂20 (照射量約為250 mJ/cm
2)以在該PET支撐基材1上形成該菲涅耳透鏡2,該菲涅耳透鏡2包括該中央透鏡單元21及該等稜柱單元22 (參閱圖1)。
The ultraviolet
使該菲涅耳透鏡2脫離該滾輪模具3。The
在該菲涅耳透鏡2及該支撐基材1上分別形成一保護膜5。該保護膜5的材料是選自於紫外光固化型硬化塗層(hard coating) (鉛筆硬度為2H以上)、聚乙烯或聚丙烯。A
參閱圖3至圖5,該第一實施例的光學透鏡裝置的製造方法之另一具體實施例為卷對卷製程,其包含以下步驟:3 to 5, another specific embodiment of the manufacturing method of the optical lens device of the first embodiment is a roll-to-roll process, which includes the following steps:
提供一透明PC支撐基材1。A transparent
提供一滾輪模具3,該滾輪模具3如前一具體實施例所述。在該滾輪模具3上塗佈一(甲基)丙烯酸系的紫外光可固化樹脂20。在本實施例中,該紫外光可固化樹脂20為購自於喬越實業有限公司(Sil-More Industrial Ltd.)且產品型號為x-8060-1的紫外光可固化樹脂。A
使該紫外光可固化樹脂20以該滾輪模具3進行模塑。The ultraviolet
在40℃中以波長為365 nm的紫外光4照射該紫外光可固化樹脂20 (照射量約為250 mJ/cm
2)以在該PC支撐基材1上形成該菲涅耳透鏡2,該菲涅耳透鏡2包括該中央透鏡單元21及該等稜柱單元22 (參閱圖1)。
The ultraviolet light
使該菲涅耳透鏡2脫離該滾輪模具3。The
在該菲涅耳透鏡2及該支撐基材1上分別形成一保護膜5。該保護膜5的材料如前一具體實施例所述。A
參閱圖6,本發明用於頭戴式顯示器的光學透鏡裝置之一第二實施例與上述該第一實施例類似,差異之處在於該第二實施例的菲涅耳透鏡2包括一呈平面狀的中央透鏡單元21及多個稜柱單元22。Referring to FIG. 6, a second embodiment of an optical lens device for a head-mounted display of the present invention is similar to the above-mentioned first embodiment. The difference is that the
參閱圖7,本發明用於頭戴式顯示器的光學透鏡裝置之一第三實施例包含一透明支撐基材1及一設置於該支撐基材1上的菲涅耳透鏡2。該菲涅耳透鏡2包括一呈凸面狀的中央透鏡單元21及多個稜柱單元22。Referring to FIG. 7, a third embodiment of an optical lens device for a head-mounted display of the present invention includes a transparent supporting
該等稜柱單元22相對於該中央透鏡單元21由近至遠彼此平行排列。每一稜柱單元22具有一底部221、一拔模面222及一傾斜面223。該底部221面向該支撐基材1;該拔模面222自該底部221遠離該支撐基材1延伸;該傾斜面223自該底部221遠離該支撐基材1延伸至與該拔模面222交會形成一頂端224。每一稜柱單元22的拔模面222與其相鄰的稜柱單元22的傾斜面223交會形成一溝槽底端225。在本實施例中,每一稜柱單元22自該底部221至該頂端224的測量高度約為15 μm,該底部221的寬度約為180 μm。The
在本實施例中,該支撐基材1的厚度約為188 μm且是呈一曲率半徑約為0.5 cm的曲面。In this embodiment, the supporting
在本實施例中,每一稜柱單元22的頂端224是呈一曲率半徑約為2 μm的圓角,該溝槽底端225呈一曲率半徑約為2 μm的圓角。In this embodiment, the
該第三實施例的光學透鏡裝置的製造方法與上述該第一實施例的光學透鏡裝置的製造方法類似,差異之處在於該第三實施例的滾輪模具3的該等稜柱形成槽32相對於該中央透鏡形成形體31由近至遠彼此平行排列。The method of manufacturing the optical lens device of the third embodiment is similar to the method of manufacturing the optical lens device of the first embodiment described above. The difference is that the
綜上所述,本發明用於頭戴式顯示器的光學透鏡裝置的厚度薄,且可呈曲率半徑為0.5 cm的曲面而不發生斷裂可撓曲,使用時不會在人體視覺上產生干擾線條。此外,用於製造該光學透鏡裝置的模具3與其製得的光學透鏡裝置之間的結構尺寸誤差小(即保持高轉寫率,誤差小於約10%),該等稜柱單元22的圓角的曲率半徑小(近似於尖角),因此該光學透鏡裝置使用時不易使視覺影像產生變形,故確實能達成本發明之目的。In summary, the optical lens device used in the head-mounted display of the present invention is thin in thickness, and can be curved with a radius of curvature of 0.5 cm without breaking and bending, and will not produce interference lines on human vision during use. . In addition, the structural dimension error between the
惟以上所述者,僅為本發明之實施例而已,當不能以此限定本發明實施之範圍,凡是依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾,皆仍屬本發明專利涵蓋之範圍內。However, the above are only examples of the present invention, and should not be used to limit the scope of implementation of the present invention, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.
1:支撐基材 2:菲涅耳透鏡 20:紫外光可固化樹脂 21:中央透鏡單元 22:稜柱單元 221:底部 222:拔模面 223:傾斜面 224:頂端 225:溝槽底端 3:模具 31:中央透鏡形成形體 32:稜柱形成槽 320:開口 322:拔模面 323:傾斜面 324:底端 4:紫外光 5:保護膜 1: Support substrate 2: Fresnel lens 20: UV curable resin 21: Central lens unit 22: Prism unit 221: bottom 222: Draft surface 223: Inclined Surface 224: top 225: The bottom of the groove 3: Mould 31: The central lens forms the shape 32: Prism forms grooves 320: opening 322: Draft surface 323: Inclined surface 324: Bottom 4: Ultraviolet light 5: Protective film
本發明之其他的特徵及功效,將於參照圖式的實施方式中清楚地呈現,其中: [圖1]是本發明用於頭戴式顯示器的光學透鏡裝置的第一實施例的剖視示意圖; [圖2]是該第一實施例的光學透鏡裝置的製造方法之一具體實施例的步驟流程圖; [圖3]是該第一實施例的光學透鏡裝置的製造方法之另一具體實施例的步驟流程圖; [圖4]是該第一實施例的光學透鏡裝置的製程設備配置示意圖; [圖5]是用於製造該第一實施例的光學透鏡裝置的模具的立體示意圖; [圖6]是本發明用於頭戴式顯示器的光學透鏡裝置的第二實施例的剖視示意圖;及 [圖7]是本發明用於頭戴式顯示器的光學透鏡裝置的第三實施例的立體示意圖。 Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: [Figure 1] is a schematic cross-sectional view of the first embodiment of the optical lens device for head-mounted displays of the present invention; [Fig. 2] is a step flow chart of a specific embodiment of the manufacturing method of the optical lens device of the first embodiment; [Figure 3] is a flowchart of another specific embodiment of the method of manufacturing the optical lens device of the first embodiment; [Figure 4] is a schematic diagram of the process equipment configuration of the optical lens device of the first embodiment; [FIG. 5] is a schematic perspective view of a mold used to manufacture the optical lens device of the first embodiment; [FIG. 6] is a schematic cross-sectional view of the second embodiment of the optical lens device for a head-mounted display of the present invention; and [Fig. 7] is a three-dimensional schematic diagram of the third embodiment of the optical lens device for a head-mounted display of the present invention.
1:支撐基材 1: Support substrate
2:菲涅耳透鏡 2: Fresnel lens
21:中央透鏡單元 21: Central lens unit
22:稜柱單元 22: Prism unit
221:底部 221: bottom
222:拔模面 222: Draft surface
223:傾斜面 223: Inclined Surface
224:頂端 224: top
225:溝槽底端 225: The bottom of the groove
Claims (23)
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102809770A (en) * | 2012-08-07 | 2012-12-05 | 南京索尔玻璃科技有限公司 | Preparation method of linear Fresnel lens and Fresnel lens prepared by preparation method |
CN108132528A (en) * | 2017-10-13 | 2018-06-08 | 玉晶光电(厦门)有限公司 | Eyepiece optical system |
TW201908115A (en) * | 2017-07-11 | 2019-03-01 | 日商大賽璐股份有限公司 | Fresnel lens and manufacturing method thereof |
TW201935040A (en) * | 2018-02-12 | 2019-09-01 | 玉晶光電股份有限公司 | Fresnel lens |
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CN102809770A (en) * | 2012-08-07 | 2012-12-05 | 南京索尔玻璃科技有限公司 | Preparation method of linear Fresnel lens and Fresnel lens prepared by preparation method |
TW201908115A (en) * | 2017-07-11 | 2019-03-01 | 日商大賽璐股份有限公司 | Fresnel lens and manufacturing method thereof |
CN108132528A (en) * | 2017-10-13 | 2018-06-08 | 玉晶光电(厦门)有限公司 | Eyepiece optical system |
TW201935040A (en) * | 2018-02-12 | 2019-09-01 | 玉晶光電股份有限公司 | Fresnel lens |
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