JPWO2021240515A5

JPWO2021240515A5 -

Info

Publication number: JPWO2021240515A5
Application number: JP2022551401A
Authority: JP
Publication date: 2023-07-31
Anticipated expiration: 2041-05-24

Description

本発明の一態様によれば、複合導光光学素子（ＬＯＥ）を作製する方法であって、複数のＬＯＥ前駆体および複数の透明なスペーサプレートの接合されたスタックを提供することであって、スタックは、平行表面の第１の対を有し、スタックは、平行表面の対に垂直なスタックの長さに沿って、交互に配置されたＬＯＥ前駆体および透明なスペーサプレートを有し、各ＬＯＥ前駆体は、主平行面の対、および主平行面の対に対して傾斜した第１の複数の相互に平行な部分反射性内部面を含む、提供することと、平行表面の第２の対および平行表面の第２の対に対して傾斜した複数の相互に平行な内部面を有する第１の光学ブロックを提供することであって、内部面は、少なくとも部分的に反射性であり、それにより第１の光学ブロックが、第２の複数の相互に平行な部分反射性内部面を含む、提供することと、第１の光学ブロックの表面のうちの１つが、スタックの表面のうちの１つに連結され、第１の複数の部分反射性内部面が、第２の複数の部分反射性内部面と非平行となるように、第１の光学ブロックをスタックに接合し、それにより第２の光学ブロックを形成することと、ＬＯＥ前駆体が間に挟持された少なくとも２つの連続するスペーサプレートを通して第２の光学ブロックを切断することにより、第２の光学ブロックから少なくとも１つの複合ＬＯＥをスライス状に切り出すことと、を含む方法が提供される。 According to one aspect of the invention, a method of making a composite light guiding optical element (LOE) comprises providing a bonded stack of multiple LOE precursors and multiple transparent spacer plates, comprising: The stack has a first pair of parallel surfaces, the stack has alternating LOE precursors and transparent spacer plates along the length of the stack perpendicular to the pair of parallel surfaces, each The LOE precursor comprises a pair of major parallel surfaces and a first plurality of mutually parallel partially reflective interior surfaces angled with respect to the pair of major parallel surfaces ; providing a first optical block having a plurality of mutually parallel interior surfaces angled with respect to the pair and a second pair of parallel surfaces, the interior surfaces being at least partially reflective; , whereby the first optical block includes a second plurality of mutually parallel partially reflective internal surfaces; and one of the surfaces of the first optical block is one of the surfaces of the stack and joined to the stack such that the first plurality of partially reflective interior surfaces are non-parallel to the second plurality of partially reflective interior surfaces, thereby At least one composite LOE from the second optical block by forming a second optical block and cutting the second optical block through at least two consecutive spacer plates with LOE precursors sandwiched therebetween. and slicing the .

Claims

A method of making a composite light guiding optical element (LOE), comprising:
providing a bonded stack of a plurality of LOE precursors and a plurality of transparent spacer plates, said stack having a first pair of parallel surfaces; Alternating LOE precursors and transparent spacer plates along the length of said vertical stack, each LOE precursor having a pair of major parallel surfaces and inclined with respect to said pair of major parallel surfaces. a first plurality of mutually parallel partially reflective interior surfaces;
providing a first optical block having a second pair of parallel surfaces and a plurality of mutually parallel interior surfaces angled with respect to the second pair of parallel surfaces, the interior surfaces comprising: being at least partially reflective whereby said first optical block includes a second plurality of mutually parallel partially reflective interior surfaces;
One of the surfaces of the first optical block is coupled to one of the surfaces of the stack, and the first plurality of partially reflective interior surfaces are coupled to the second plurality of partially reflective interior surfaces. bonding the first optical block to the stack non-parallel to a plane, thereby forming a second optical block;
slicing at least one composite LOE from said second optical block by cutting said second optical block through at least two consecutive spacer plates with LOE precursors sandwiched therebetween; How to include.

2. The method of claim 1, comprising polishing a surface of the stack to be coupled to the first optical block prior to bonding the stack to the first optical block.

2. The method of claim 1, comprising polishing a surface of the first optical block to be coupled to the stack prior to bonding the first optical block to the stack.

the first optical block such that the first plurality of partially reflective interior surfaces and the second plurality of partially reflective interior surfaces are orthogonal prior to bonding the first optics block to the stack; 2. The method of claim 1, comprising aligning the stack with the stack.

2. The method of claim 1, further comprising polishing an exterior surface of the at least one sliced composite LOE parallel to the major parallel planes of the LOE precursor.

2. The method of claim 1, wherein each of the interior surfaces of the first optical block is only partially coated with a partially reflective coating, the interior surfaces comprising a plurality of strips of reflective coating with gaps therebetween. Method.

An optical structure that is an intermediate work product of a process for fabricating a composite LOE, said optical structure comprising:
A first region comprising a plurality of LOE precursors separated by intervening transparent spacer plates, each LOE precursor having a pair of major exterior parallel surfaces and a pair of major exterior parallel surfaces. a first region comprising a slanted first plurality of mutually parallel partially reflective interior surfaces;
a second region comprising a second plurality of mutually parallel partially reflective interior surfaces non-parallel to the first plurality of partially reflective interior surfaces;
at least one interior surface separating said first region and said second region, said interior surface being perpendicular to said pair of major exterior parallel surfaces. , the optical structure.

8. The optical structure of claim 7, formed by joining a first optical block containing said first region with a second optical block containing said second region.

8. The optical structure of Claim 7, further comprising a third optical region between said first region and said second region.

10. The optical structure of Claim 9, wherein said third optical region comprises one or more optical elements.

10. The optical structure of Claim 9, wherein said third optical region is optically inactive.

8. The optical construction of Claim 7, wherein at least one sub-region within said second region does not have any partially reflective internal surfaces.

8. The optical construction of Claim 7, wherein each LOE precursor within said first region includes at least one sub-region that does not have any partially reflective internal surfaces.