US 2026/0277046 A1Published application

Phase modulation module

AssigneeHamamatsu Photonics K.K.

InventorsNaoki NOZAWA, Hirokazu ASAINE, Jumpei FUKUJIN, Mikio NAGATA, Takumi TAKAHASHI, Yoshiki AKIZAWA, Yuma MURAMATSU

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Abstract

A first holding portion includes a first side wall portion facing a first side surface of a phase modulation element, and a first protruding portion extending from the first side wall portion toward the phase modulation element. A second holding portion includes a second side wall portion facing a second side surface of the phase modulation element. An end surface of the first protruding portion faces the phase modulation element. A potting material connects an end surface of the first protruding portion and the first side surface to each other in a first space formed by the first side surface of the phase modulation element and the first side wall portion and the first protruding portion of the first holding portion. Air is disposed in at least a part of an overlapping portion of the first space overlapping the first protruding portion when view ed from a predetermined direction.

Claims21

Dependent claims

A phase modulation module comprising:

a base portion;
a reflection-type phase modulation element disposed on the base portion;
a first holding portion and a second holding portion disposed on the base portion such that the phase modulation element is located between the first holding portion and the second holding portion when viewed from a predetermined direction;
and
a potting material that connects the phase modulation element and the first holding portion to each other and connects the phase modulation element and the second holding portion to each other, wherein
when a side on which the phase modulation element is located with respect to the base portion in the predetermined direction is defined as a first side and a side opposite to the first side is defined as a second side, the phase modulation element includes:
a circuit board disposed on the base portion,
a liquid crystal layer disposed on the first side with respect to the circuit board, and
a cover member formed of a light transmissive material in a plate shape and disposed on the first side with respect to the liquid crystal layer,
the first holding portion includes a first side wall portion facing a first side surface of the phase modulation element, and a first protruding portion extending from the first side wall portion toward the phase modulation element,
the second holding portion includes a second side wall portion facing a second side surface opposite to the first side surface of the phase modulation element,
an end surface of the first protruding portion faces the phase modulation element,
the potting material connects the end surface of the first protruding portion and the first side surface to each other in a first space formed by the first side surface of the phase modulation element and the first side wall portion and the first protruding portion of the first holding portion, and
air is disposed in at least a part of a portion of the first space overlapping the first protruding portion when viewed from the predetermined direction.

11 more elements

A phase modulation module comprising:

a base portion;
a reflection-type phase modulation element disposed on the base portion;
a first holding portion and a second holding portion disposed on the base portion such that the phase modulation element is located between the first holding portion and the second holding portion when viewed from a predetermined direction;
and
a potting material that connects the phase modulation element and the first holding portion to each other and connects the phase modulation element and the second holding portion to each other, wherein
when a side on which the phase modulation element is located with respect to the base portion in the predetermined direction is defined as a first side and a side opposite to the first side is defined as a second side, the phase modulation element includes:
a circuit board disposed on the base portion,
a liquid crystal layer disposed on the first side with respect to the circuit board, and
a cover member formed of a light transmissive material in a plate shape and disposed on the first side with respect to the liquid crystal layer,
the first holding portion includes a first side wall portion facing a first side surface of the phase modulation element,
the second holding portion includes a second side wall portion facing a second side surface opposite to the first side surface of the phase modulation element,
the cover member includes a first protruding portion protruding with respect to the circuit board when viewed from the predetermined direction,
an end surface of the first protruding portion faces the first holding portion,
the potting material connects the end surface of the first protruding portion and the first holding portion to each other in a first space formed by the first side surface of the phase modulation element and the first side wall portion of the first holding portion,
air is disposed in at least a part of an overlapping portion of the first space overlapping the first protruding portion when viewed from the predetermined direction, and
an edge of an opening of the overlapping portion on the second side at a position corresponding to the end surface of the first protruding portion is located on the second side with respect to a surface of the circuit board on the first side.

13 more elements

Dependencies are inferred from the claim text.